‹

Impact Sensor

Restraints and Safety Systems › Air Bag Systems
Unified entry — merged from multiple cross-listed pages in the original manual.

Parts

PartFront
ManufacturerCHY
OEM part #68056162AA
Price$39.50
PartRear
ManufacturerCHY
OEM part #68056162AA
Price$39.50
PartSide Sensor
ManufacturerCHY
OEM part #68056160AA
Price$39.20
PartFront
ManufacturerCHY
OEM part #68056162AA
Price$39.50
PartRear
ManufacturerCHY
OEM part #68056162AA
Price$39.50
PartSide Sensor
ManufacturerCHY
OEM part #68056160AA
Price$39.20

Labor

Replace — Front Sensor — One Side0.4 hr
Warranty 0.0 hrSkill B
Replace — Front Sensor — One Side0.4 hr
Warranty 0.0 hrSkill B
Procedures
Impact Sensor - Removal — Side - C-Pillar5 steps
⚠ WARNING
To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to follow these instructions may result in accidental airbag deployment.
⚠ WARNING
To avoid serious or fatal injury, never strike or drop the side impact sensor, as it can damage the impact sensor or affect its calibration. The side impact sensor enables the system to deploy the side Supplemental Restraint System (SRS) components. If an impact sensor is accidentally dropped during service, the sensor must be scrapped and replaced with a new unit. Failure to observe this warning could result in accidental, incomplete, or improper side SRS component deployment.
ℹ NOTE
The front and side impact sensors are interchangeable.
Fig. 1
Fig. 1
  1. Disconnect and isolate the battery negative cable. Wait two minutes for the system capacitor to discharge before further service.
  2. Remove the lower trim from the inside of the lower right or left C-pillar (4). Quarter Trim Panel - Removal.
  3. Remove the nut (1) that secures the side impact sensor (2) to the weld stud on the lower C-pillar.
  4. Remove the sensor from the weld stud on the inner C-pillar.
  5. Disconnect the body wire harness connector (3) for the side impact sensor from the sensor connector receptacle.
Impact Sensor - Removal — Front5 steps
⚠ WARNING
To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to follow these instructions may result in accidental airbag deployment.
⚠ WARNING
To avoid serious or fatal injury, never strike or drop the Electronic Pedestrian Protection (EPP) system impact sensor, as it can damage the impact sensor or affect its calibration. The EPP impact sensor enables the system to deploy the EPP system active hood hinge actuators. If an impact sensor is accidentally dropped during service, the sensor must be scrapped and replaced with a new unit. Failure to observe this warning could result in accidental, incomplete, or improper EPP active hood hinge actuator deployment.
ℹ NOTE
The front and side impact sensors are interchangeable.
Fig. 1
Fig. 1
  1. Disconnect and isolate the battery negative cable. Wait two minutes for the system capacitor to discharge before further service.
  2. Service access for the right front impact sensor is accomplished by removing the air filter housing from the engine compartment. Service access for the left front impact sensor is accomplished by raising and supporting the vehicle, then removing the access plug from the front of the left front wheel house liner.
  3. Remove the nut (2) that secures the front impact sensor (3) to the stud on the bracket (6) on the back (engine compartment side) of the front end module carrier (1) below and inboard of the front lamp unit.
  4. Disconnect one end of the jumper wire harness (5) from the right or left front impact sensor connector receptacle or from the body wire harness (4).
  5. Remove the right or left front impact sensor from the engine compartment.
Impact Sensor - Removal — Side - B-Pillar6 steps
⚠ WARNING
To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to follow these instructions may result in accidental airbag deployment.
⚠ WARNING
To avoid serious or fatal injury, never strike or drop the side impact sensor, as it can damage the impact sensor or affect its calibration. The side impact sensor enables the system to deploy the side Supplemental Restraint System (SRS) components. If an impact sensor is accidentally dropped during service, the sensor must be scrapped and replaced with a new unit. Failure to observe this warning could result in accidental, incomplete, or improper side SRS component deployment.
ℹ NOTE
The front and side impact sensors are interchangeable.
Fig. 1
Fig. 1
  1. Adjust the driver or passenger side front seat to its most forward position for easiest access to the B-pillar trim.
  2. Disconnect and isolate the battery negative cable. Wait two minutes for the system capacitor to discharge before further service.
  3. Remove the trim from the inside of the lower right or left B-pillar (1). B-Pillar Trim Panel - Removal.
  4. Remove the nut (2) that secures the side impact sensor (3) to the weld stud on the lower B-pillar.
  5. Remove the sensor from the weld stud on the inner B-pillar.
  6. Disconnect the body wire harness connector (4) from the sensor connector receptacle.
Impact Sensor - Installation — Side - C-Pillar5 steps
⚠ WARNING
To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to follow these instructions may result in accidental airbag deployment.
⚠ WARNING
To avoid serious or fatal injury, never strike or drop the side impact sensor, as it can damage the impact sensor or affect its calibration. The side impact sensor enables the system to deploy the side Supplemental Restraint System (SRS) components. If an impact sensor is accidentally dropped during service, the sensor must be scrapped and replaced with a new unit. Failure to observe this warning could result in accidental, incomplete, or improper side SRS component deployment.
ℹ NOTE
The front and side impact sensors are interchangeable.
Fig. 1
Fig. 1
  1. Reconnect the body wire harness connector (3) to the side impact sensor (2) connector receptacle.
  2. Position the impact sensor onto the weld stud on the inner C-pillar (4). Be certain that the anti-rotation pin on the back of the sensor is engaged in the clearance hole of the C-pillar.
  3. Install and tighten the nut (1) that secures the sensor to the weld stud on the inner C-pillar. Tighten the nut to 7 Nm (62 in. lbs.).
  4. Reinstall the trim onto the inside of the lower C-pillar. Quarter Trim Panel - Installation.
  5. Do not reconnect the battery negative cable at this time. The Supplemental Restraint System (SRS) Verification Test procedure should be performed following service of any SRS component. Service and Repair.
Impact Sensor - Installation — Front6 steps
⚠ WARNING
To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to follow these instructions may result in accidental airbag deployment.
⚠ WARNING
To avoid serious or fatal injury, never strike or drop the Electronic Pedestrian Protection (EPP) system impact sensor, as it can damage the impact sensor or affect its calibration. The EPP impact sensor enables the system to deploy the EPP system active hood hinge actuators. If an impact sensor is accidentally dropped during service, the sensor must be scrapped and replaced with a new unit. Failure to observe this warning could result in accidental, incomplete, or improper EPP active hood hinge actuator deployment.
ℹ NOTE
The front and side impact sensors are interchangeable.
Fig. 1
Fig. 1
  1. Service access for the right front impact sensor is accomplished by removing the air filter housing from the engine compartment. Service access for the left front impact sensor is accomplished by raising and supporting the vehicle, then removing the access plug from the front of the left front wheel house liner.
  2. Position the right or left front impact sensor (3) into the engine compartment.
  3. Reconnect the jumper wire harness (5) to the right or left front impact sensor connector receptacle or to the body wire harness (4).
  4. Position the sensor onto the stud on the bracket (6) on the back (engine compartment side) of the front end module carrier (1) below and inboard of the front lamp unit. Be certain that the anti-rotation pin on the back of the sensor is engaged in the clearance notch of the bracket and that the connector receptacle is pointed straight downward.
  5. Install and tighten the nut (2) that secures the sensor to the stud on the bracket. Tighten the nut to 8 Nm (71 in. lbs.).
  6. Do not reconnect the battery negative cable at this time. The Supplemental Restraint System (SRS) Verification Test procedure should be performed following service of any SRS component. Service and Repair.
Impact Sensor - Installation — Side - B-Pillar5 steps
⚠ WARNING
To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to follow these instructions may result in accidental airbag deployment.
⚠ WARNING
To avoid serious or fatal injury, never strike or drop the side impact sensor, as it can damage the impact sensor or affect its calibration. The side impact sensor enables the system to deploy the side Supplemental Restraint System (SRS) components. If an impact sensor is accidentally dropped during service, the sensor must be scrapped and replaced with a new unit. Failure to observe this warning could result in accidental, incomplete, or improper side SRS component deployment.
ℹ NOTE
The front and side impact sensors are interchangeable.
Fig. 1
Fig. 1
  1. Reconnect the body wire harness connector (4) to the side impact sensor (3) connector receptacle.
  2. Position the sensor onto the weld stud on the inner B-pillar (1). Be certain that the anti-rotation pin on the back of the sensor is engaged in the clearance hole of the B-pillar.
  3. Install and tighten the nut (2) that secures the sensor to the weld stud on the inner B-pillar. Tighten the nut to 7 Nm (62 in. lbs.).
  4. Reinstall the lower trim onto the inside of the B-pillar. B-Pillar Trim Panel - Installation.
  5. Do not reconnect the battery negative cable at this time. The Supplemental Restraint System (SRS) Verification Test procedure should be performed following service of any SRS component. Service and Repair.
Impact Sensor - Description — Sidereference
Fig. 1
Fig. 1
SIDE Two side impact sensors (1) are used on this vehicle when it is equipped with the side curtain airbags, two each for the left and right sides of the vehicle. These sensors are mounted remotely from the impact sensor that is internal to the Occupant Restraint Controller (ORC). Each side sensor is secured with a nut to a stud on the inner right or left B-pillar above the front seat belt retractor, or to a stud on the right or left inner C-pillar just forward of the second row outboard seat belt retractor within the passenger compartment. The sensor housing has an integral connector receptacle (4), an integral anti-rotation pin (3), and an integral mounting hole (2) with a metal sleeve to provide crush protection. The right and left side impact sensors are identical in construction and calibration. A cavity in the center of the molded black plastic impact sensor housing contains the electronic circuitry of the sensor which includes an electronic communication chip and an electronic impact sensor. A nylon cover is laser-welded over the cavity to seal and protect the internal electronic circuitry and components. The side impact sensors are each connected to the vehicle electrical system through a dedicated take out and connector of the body wire harness. The impact sensors cannot be repaired or adjusted and, if damaged or ineffective, they must be replaced.
Impact Sensor - Description — Frontreference
Fig. 1
Fig. 1
FRONT Two front impact sensors (1) are used on this vehicle, one each for the left and right sides of the vehicle. These sensors are mounted remotely from the impact sensor that is internal to the Occupant Restraint Controller (ORC). Each front sensor is secured with a nut to a stud on a bracket on the back of the front end module carrier on either side of the cooling module, below and inboard of the front combination lamp unit within the engine compartment. The sensor housing has an integral connector receptacle (4), an integral anti-rotation pin (3), and an integral mounting hole (2) with a metal sleeve to provide crush protection. The right and left front impact sensors are identical in construction and calibration. A cavity in the center of the molded black plastic impact sensor housing contains the electronic circuitry of the sensor which includes an electronic communication chip and an electronic impact sensor. A nylon cover is laser-welded over the cavity to seal and protect the internal electronic circuitry and components. The front impact sensors are each connected to the vehicle electrical system through a short jumper wire harness to a dedicated take out and connector of the body wire harness. The impact sensors cannot be repaired or adjusted and, if damaged or ineffective, they must be replaced.
Impact Sensor - Removal — Side - C-Pillar5 steps
⚠ WARNING
To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to follow these instructions may result in accidental airbag deployment.
⚠ WARNING
To avoid serious or fatal injury, never strike or drop the side impact sensor, as it can damage the impact sensor or affect its calibration. The side impact sensor enables the system to deploy the side Supplemental Restraint System (SRS) components. If an impact sensor is accidentally dropped during service, the sensor must be scrapped and replaced with a new unit. Failure to observe this warning could result in accidental, incomplete, or improper side SRS component deployment.
ℹ NOTE
The front and side impact sensors are interchangeable.
Fig. 1
Fig. 1
  1. Disconnect and isolate the battery negative cable. Wait two minutes for the system capacitor to discharge before further service.
  2. Remove the lower trim from the inside of the lower right or left C-pillar (4). Quarter Trim Panel - Removal.
  3. Remove the nut (1) that secures the side impact sensor (2) to the weld stud on the lower C-pillar.
  4. Remove the sensor from the weld stud on the inner C-pillar.
  5. Disconnect the body wire harness connector (3) for the side impact sensor from the sensor connector receptacle.
Impact Sensor - Removal — Front5 steps
⚠ WARNING
To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to follow these instructions may result in accidental airbag deployment.
⚠ WARNING
To avoid serious or fatal injury, never strike or drop the Electronic Pedestrian Protection (EPP) system impact sensor, as it can damage the impact sensor or affect its calibration. The EPP impact sensor enables the system to deploy the EPP system active hood hinge actuators. If an impact sensor is accidentally dropped during service, the sensor must be scrapped and replaced with a new unit. Failure to observe this warning could result in accidental, incomplete, or improper EPP active hood hinge actuator deployment.
ℹ NOTE
The front and side impact sensors are interchangeable.
Fig. 1
Fig. 1
  1. Disconnect and isolate the battery negative cable. Wait two minutes for the system capacitor to discharge before further service.
  2. Service access for the right front impact sensor is accomplished by removing the air filter housing from the engine compartment. Service access for the left front impact sensor is accomplished by raising and supporting the vehicle, then removing the access plug from the front of the left front wheel house liner.
  3. Remove the nut (2) that secures the front impact sensor (3) to the stud on the bracket (6) on the back (engine compartment side) of the front end module carrier (1) below and inboard of the front lamp unit.
  4. Disconnect one end of the jumper wire harness (5) from the right or left front impact sensor connector receptacle or from the body wire harness (4).
  5. Remove the right or left front impact sensor from the engine compartment.
Impact Sensor - Removal — Side - B-Pillar6 steps
⚠ WARNING
To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to follow these instructions may result in accidental airbag deployment.
⚠ WARNING
To avoid serious or fatal injury, never strike or drop the side impact sensor, as it can damage the impact sensor or affect its calibration. The side impact sensor enables the system to deploy the side Supplemental Restraint System (SRS) components. If an impact sensor is accidentally dropped during service, the sensor must be scrapped and replaced with a new unit. Failure to observe this warning could result in accidental, incomplete, or improper side SRS component deployment.
ℹ NOTE
The front and side impact sensors are interchangeable.
Fig. 1
Fig. 1
  1. Adjust the driver or passenger side front seat to its most forward position for easiest access to the B-pillar trim.
  2. Disconnect and isolate the battery negative cable. Wait two minutes for the system capacitor to discharge before further service.
  3. Remove the trim from the inside of the lower right or left B-pillar (1). B-Pillar Trim Panel - Removal.
  4. Remove the nut (2) that secures the side impact sensor (3) to the weld stud on the lower B-pillar.
  5. Remove the sensor from the weld stud on the inner B-pillar.
  6. Disconnect the body wire harness connector (4) from the sensor connector receptacle.
Impact Sensor - Installation — Side - C-Pillar5 steps
⚠ WARNING
To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to follow these instructions may result in accidental airbag deployment.
⚠ WARNING
To avoid serious or fatal injury, never strike or drop the side impact sensor, as it can damage the impact sensor or affect its calibration. The side impact sensor enables the system to deploy the side Supplemental Restraint System (SRS) components. If an impact sensor is accidentally dropped during service, the sensor must be scrapped and replaced with a new unit. Failure to observe this warning could result in accidental, incomplete, or improper side SRS component deployment.
ℹ NOTE
The front and side impact sensors are interchangeable.
Fig. 1
Fig. 1
  1. Reconnect the body wire harness connector (3) to the side impact sensor (2) connector receptacle.
  2. Position the impact sensor onto the weld stud on the inner C-pillar (4). Be certain that the anti-rotation pin on the back of the sensor is engaged in the clearance hole of the C-pillar.
  3. Install and tighten the nut (1) that secures the sensor to the weld stud on the inner C-pillar. Tighten the nut to 7 Nm (62 in. lbs.).
  4. Reinstall the trim onto the inside of the lower C-pillar. Quarter Trim Panel - Installation.
  5. Do not reconnect the battery negative cable at this time. The Supplemental Restraint System (SRS) Verification Test procedure should be performed following service of any SRS component. Service and Repair.
Impact Sensor - Installation — Front6 steps
⚠ WARNING
To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to follow these instructions may result in accidental airbag deployment.
⚠ WARNING
To avoid serious or fatal injury, never strike or drop the Electronic Pedestrian Protection (EPP) system impact sensor, as it can damage the impact sensor or affect its calibration. The EPP impact sensor enables the system to deploy the EPP system active hood hinge actuators. If an impact sensor is accidentally dropped during service, the sensor must be scrapped and replaced with a new unit. Failure to observe this warning could result in accidental, incomplete, or improper EPP active hood hinge actuator deployment.
ℹ NOTE
The front and side impact sensors are interchangeable.
Fig. 1
Fig. 1
  1. Service access for the right front impact sensor is accomplished by removing the air filter housing from the engine compartment. Service access for the left front impact sensor is accomplished by raising and supporting the vehicle, then removing the access plug from the front of the left front wheel house liner.
  2. Position the right or left front impact sensor (3) into the engine compartment.
  3. Reconnect the jumper wire harness (5) to the right or left front impact sensor connector receptacle or to the body wire harness (4).
  4. Position the sensor onto the stud on the bracket (6) on the back (engine compartment side) of the front end module carrier (1) below and inboard of the front lamp unit. Be certain that the anti-rotation pin on the back of the sensor is engaged in the clearance notch of the bracket and that the connector receptacle is pointed straight downward.
  5. Install and tighten the nut (2) that secures the sensor to the stud on the bracket. Tighten the nut to 8 Nm (71 in. lbs.).
  6. Do not reconnect the battery negative cable at this time. The Supplemental Restraint System (SRS) Verification Test procedure should be performed following service of any SRS component. Service and Repair.
Impact Sensor - Installation — Side - B-Pillar5 steps
⚠ WARNING
To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to follow these instructions may result in accidental airbag deployment.
⚠ WARNING
To avoid serious or fatal injury, never strike or drop the side impact sensor, as it can damage the impact sensor or affect its calibration. The side impact sensor enables the system to deploy the side Supplemental Restraint System (SRS) components. If an impact sensor is accidentally dropped during service, the sensor must be scrapped and replaced with a new unit. Failure to observe this warning could result in accidental, incomplete, or improper side SRS component deployment.
ℹ NOTE
The front and side impact sensors are interchangeable.
Fig. 1
Fig. 1
  1. Reconnect the body wire harness connector (4) to the side impact sensor (3) connector receptacle.
  2. Position the sensor onto the weld stud on the inner B-pillar (1). Be certain that the anti-rotation pin on the back of the sensor is engaged in the clearance hole of the B-pillar.
  3. Install and tighten the nut (2) that secures the sensor to the weld stud on the inner B-pillar. Tighten the nut to 7 Nm (62 in. lbs.).
  4. Reinstall the lower trim onto the inside of the B-pillar. B-Pillar Trim Panel - Installation.
  5. Do not reconnect the battery negative cable at this time. The Supplemental Restraint System (SRS) Verification Test procedure should be performed following service of any SRS component. Service and Repair.
Impact Sensor - Description — Sidereference
Fig. 1
Fig. 1
SIDE Two side impact sensors (1) are used on this vehicle when it is equipped with the side curtain airbags, two each for the left and right sides of the vehicle. These sensors are mounted remotely from the impact sensor that is internal to the Occupant Restraint Controller (ORC). Each side sensor is secured with a nut to a stud on the inner right or left B-pillar above the front seat belt retractor, or to a stud on the right or left inner C-pillar just forward of the second row outboard seat belt retractor within the passenger compartment. The sensor housing has an integral connector receptacle (4), an integral anti-rotation pin (3), and an integral mounting hole (2) with a metal sleeve to provide crush protection. The right and left side impact sensors are identical in construction and calibration. A cavity in the center of the molded black plastic impact sensor housing contains the electronic circuitry of the sensor which includes an electronic communication chip and an electronic impact sensor. A nylon cover is laser-welded over the cavity to seal and protect the internal electronic circuitry and components. The side impact sensors are each connected to the vehicle electrical system through a dedicated take out and connector of the body wire harness. The impact sensors cannot be repaired or adjusted and, if damaged or ineffective, they must be replaced.
Impact Sensor - Description — Frontreference
Fig. 1
Fig. 1
FRONT Two front impact sensors (1) are used on this vehicle, one each for the left and right sides of the vehicle. These sensors are mounted remotely from the impact sensor that is internal to the Occupant Restraint Controller (ORC). Each front sensor is secured with a nut to a stud on a bracket on the back of the front end module carrier on either side of the cooling module, below and inboard of the front combination lamp unit within the engine compartment. The sensor housing has an integral connector receptacle (4), an integral anti-rotation pin (3), and an integral mounting hole (2) with a metal sleeve to provide crush protection. The right and left front impact sensors are identical in construction and calibration. A cavity in the center of the molded black plastic impact sensor housing contains the electronic circuitry of the sensor which includes an electronic communication chip and an electronic impact sensor. A nylon cover is laser-welded over the cavity to seal and protect the internal electronic circuitry and components. The front impact sensors are each connected to the vehicle electrical system through a short jumper wire harness to a dedicated take out and connector of the body wire harness. The impact sensors cannot be repaired or adjusted and, if damaged or ineffective, they must be replaced.
Factory service manual
From the 2008 KK factory manual — descriptions, specs, torque & procedures for this part.
FRONT IMPACT SENSOR📷 2
Two front impact sensors (1) are used on this vehicle, one each for the left and right sides of the vehicle. These sensors are mounted remotely from the impact sensor that is internal to the Occupant Restraint Controller (ORC). Each front sensor is secured with a nut to a stud on a bracket on the back of the front end module carrier on either side of the cooling module, below and inboard of the front combination lamp unit within the engine compartment. The sensor housing has an integral connector receptacle (4), an integral anti-rotation pin (3), and an integral mounting hole (2) with a metal sleeve to provide crush protection.
The right and left front impact sensors are identical in construction and calibration. A cavity in the center of the molded black plastic impact sensor housing contains the electronic circuitry of the sensor which includes an electronic communication chip and an electronic impact sensor. A nylon cover is laser-welded over the cavity to seal and protect the internal electronic circuitry and components. The front impact sensors are each connected to the vehicle electrical system through a short jumper wire harness to a dedicated take out and connector of the body wire harness.
The impact sensors cannot be repaired or adjusted and, if damaged or ineffective, they must be replaced.
figure
figure
SIDE IMPACT SENSOR📷 1
Two side impact sensors (1) are used on this vehicle when it is equipped with the side curtain airbags, two each for the left and right sides of the vehicle. These sensors are mounted remotely from the impact sensor that is internal to the Occupant Restraint Controller (ORC). Each side sensor is secured with a nut to a stud on the inner right or left B-pillar above the front seat belt retractor, or to a stud on the right or left inner C-pillar just forward of the second row outboard seat belt retractor within the passenger compartment. The sensor housing has an integral connector receptacle (4), an integral anti-rotation pin (3), and an integral mounting hole (2) with a metal sleeve to provide crush protection.
The right and left side impact sensors are identical in construction and calibration. A cavity in the center of the molded black plastic impact sensor housing contains the electronic circuitry of the sensor which includes an electronic communication chip and an electronic impact sensor. A nylon cover is laser-welded over the cavity to seal and protect the internal electronic circuitry and components. The side impact sensors are each connected to the vehicle electrical system through a dedicated take out and connector of the body wire harness.
The impact sensors cannot be repaired or adjusted and, if damaged or ineffective, they must be replaced.
figure
FRONT IMPACT SENSOR
The front impact sensors are electronic accelerometers that sense the rate of vehicle deceleration, which provides verification of the direction and severity of an impact. Each sensor also contains an electronic communication chip that allows the unit to communicate the sensor status as well as sensor fault information to the microprocessor in the Occupant Restraint Controller (ORC).
The ORC microprocessor continuously monitors all of the passive restraint system electrical circuits to determine the system readiness. If the ORC detects a monitored system fault, it sets a Diagnostic Trouble Code (DTC) and controls the airbag indicator operation accordingly. The impact sensors each receive battery current and ground through dedicated left and right sensor plus and minus circuits from the ORC. The impact sensors and the ORC communicate by modulating the voltage in the sensor plus circuit.
The hard wired circuits between the front impact sensors and the ORC may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. However, conventional diagnostic methods will not prove conclusive in the diagnosis of the impact sensors or the electronic controls or communication between other modules and devices that provide features of the supplemental restraint system. The most reliable, efficient, and accurate means to diagnose the impact sensors or the electronic controls and communication related to front impact sensor operation requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.
SIDE IMPACT SENSOR
The side impact sensors are electronic accelerometers that sense the rate of vehicle deceleration, which provides verification of the direction and severity of an impact. Each sensor also contains an electronic communication chip that allows the unit to communicate the sensor status as well as sensor fault information to the microprocessor in the Occupant Restraint Controller (ORC).
The ORC microprocessor continuously monitors all of the side passive restraint system electrical circuits to determine the system readiness. If the ORC detects a monitored system fault, it sets a Diagnostic Trouble Code (DTC) and controls the airbag indicator operation accordingly. The impact sensors each receive battery current and ground through the same left or right sensor plus and minus circuits in a series arrangement from the ORC. The impact sensors and the ORC communicate by modulating the voltage in the sensor plus circuit.
The hard wired circuits between the side impact sensors and the ORC may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. However, conventional diagnostic methods will not prove conclusive in the diagnosis of the impact sensors or the electronic controls or communication between other modules and devices that provide features of the supplemental restraint system. The most reliable, efficient, and accurate means to diagnose the impact sensors or the electronic controls and communication related to side impact sensor operation requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.
FRONT IMPACT SENSOR📷 1
WARNING: To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in accidental airbag deployment.
WARNING: To avoid serious or fatal injury, never strike or drop the front impact sensor, as it can damage the impact sensor or affect its calibration. The front impact sensor enables the system to deploy the front Supplemental Restraint System (SRS) components. If an impact sensor is accidentally dropped during service, the sensor must be scrapped and replaced with a new unit. Failure to observe this warning could result in accidental, incomplete, or improper front SRS component deployment.
NOTE: The front and side impact sensors are interchangeable.
1. Disconnect and isolate the battery negative cable. Wait two minutes for the system capacitor to discharge before further service. 2. Service access for the right front impact sensor is accomplished by removing the air filter housing from the engine compartment. Service access for the left front impact sensor is accomplished by raising and supporting the vehicle, then removing the access plug from the front of the left front wheel house liner. 3. Remove the nut (2) that secures the front impact sensor (3) to the stud on the bracket (6) on the back (engine compartment side) of the front end module carrier (1) below and inboard of the front lamp unit.
4. Disconnect one end of the jumper wire harness (5) from the right or left front impact sensor connector receptacle or from the body wire harness (4). 5. Remove the right or left front impact sensor from the engine compartment.
figure
SIDE IMPACT SENSOR - B-PILLAR📷 1
WARNING: To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in accidental airbag deployment.
WARNING: To avoid serious or fatal injury, never strike or drop the side impact sensor, as it can damage the impact sensor or affect its calibration. The side impact sensor enables the system to deploy the side Supplemental Restraint System (SRS) components. If an impact sensor is accidentally dropped during service, the sensor must be scrapped and replaced with a new unit. Failure to observe this warning could result in accidental, incomplete, or improper side SRS component deployment.
NOTE: The front and side impact sensors are interchangeable.
1. Adjust the driver or passenger side front seat to its most forward position for easiest access to the B-pillar trim.
2. Disconnect and isolate the battery negative cable. Wait two minutes for the system capacitor to discharge before further service. 3. Remove the trim from the inside of the lower right or left B-pillar (1). Refer to REMOVAL . 4. Remove the nut (2) that secures the side impact sensor (3) to the weld stud on the lower B-pillar. 5. Remove the sensor from the weld stud on the inner B-pillar. 6. Disconnect the body wire harness connector (4) from the sensor connector receptacle.
figure
SIDE IMPACT SENSOR - C-PILLAR📷 1
WARNING: To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in accidental airbag deployment.
WARNING: To avoid serious or fatal injury, never strike or drop the side impact sensor, as it can damage the impact sensor or affect its calibration. The side impact sensor enables the system to deploy the side Supplemental Restraint System (SRS) components. If an impact sensor is accidentally dropped during service, the sensor must be scrapped and replaced with a new unit. Failure to observe this warning could result in accidental, incomplete, or improper side SRS component deployment.
NOTE: The front and side impact sensors are interchangeable.
1. Disconnect and isolate the battery negative cable. Wait two minutes for the system capacitor to discharge before further service. 2. Remove the lower trim from the inside of the lower right or left C-pillar (4). Refer to REMOVAL . 3. Remove the nut (1) that secures the side impact sensor (2) to the weld stud on the lower C-pillar. 4. Remove the sensor from the weld stud on the inner C-pillar. 5. Disconnect the body wire harness connector (3) for the side impact sensor from the sensor connector receptacle.
figure
FRONT IMPACT SENSOR
WARNING: To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in accidental airbag deployment.
WARNING: To avoid serious or fatal injury, never strike or drop the front impact sensor, as it can damage the impact sensor or affect its calibration. The front impact sensor enables the system to deploy the front Supplemental Restraint System (SRS) components. If an impact sensor is accidentally dropped during service, the sensor must be scrapped and replaced with a new unit. Failure to observe this warning could result in accidental, incomplete, or improper front SRS component deployment.
NOTE: The front and side impact sensors are interchangeable.
1. Service access for the right front impact sensor is accomplished by removing the air filter housing from the engine compartment. Service access for the left front impact sensor is accomplished by raising and supporting the vehicle, then removing the access plug from the front of the left front wheel house liner. 2. Position the right or left front impact sensor (3) into the engine compartment. 3. Reconnect the jumper wire harness (5) to the right or left front impact sensor connector receptacle or to the body wire harness (4). 4. Position the sensor onto the stud on the bracket (6) on the back (engine compartment side) of the front end module carrier (1) below and inboard of the front lamp unit. Be certain that the anti-rotation pin on the back of the sensor is engaged in the clearance notch of the bracket and that the connector receptacle is pointed straight downward. 5. Install and tighten the nut (2) that secures the sensor to the stud on the bracket. Tighten the nut to 8 N.m (71 in. lbs.). 6. Do not reconnect the battery negative cable at this time. The Supplemental Restraint System (SRS) verification test procedure should be performed following service of any SRS component. See
SIDE IMPACT SENSOR - B-PILLAR📷 1
WARNING: To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in accidental airbag deployment.
WARNING: To avoid serious or fatal injury, never strike or drop the side impact sensor, as it can damage the impact sensor or affect its calibration. The side impact sensor enables the system to deploy the side Supplemental Restraint System (SRS) components. If an impact sensor is accidentally dropped during service, the sensor must be scrapped and replaced with a new unit. Failure to observe this warning could result in accidental, incomplete, or improper side SRS component deployment.
NOTE: The front and side impact sensors are interchangeable.
1. Reconnect the body wire harness connector (4) to the side impact sensor (3) connector receptacle. 2. Position the sensor onto the weld stud on the inner B-pillar (1). Be certain that the anti-rotation pin on the back of the sensor is engaged in the clearance hole of the B-pillar. 3. Install and tighten the nut (2) that secures the sensor to the weld stud on the inner B-pillar. Tighten the nut to 7 N.m (62 in. lbs.). 4. Reinstall the lower trim onto the inside of the B-pillar. Refer to INSTALLATION . 5. Do not reconnect the battery negative cable at this time. The Supplemental Restraint System (SRS) verification test procedure should be performed following service of any SRS component. See
figure
SIDE IMPACT SENSOR - C-PILLAR📷 2
WARNING: To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before
performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in accidental airbag deployment.
WARNING: To avoid serious or fatal injury, never strike or drop the side impact sensor, as it can damage the impact sensor or affect its calibration. The side impact sensor enables the system to deploy the side Supplemental Restraint System (SRS) components. If an impact sensor is accidentally dropped during service, the sensor must be scrapped and replaced with a new unit. Failure to observe this warning could result in accidental, incomplete, or improper side SRS component deployment.
NOTE: The front and side impact sensors are interchangeable.
1. Reconnect the body wire harness connector (3) to the side impact sensor (2) connector receptacle. 2. Position the impact sensor onto the weld stud on the inner C-pillar (4). Be certain that the anti-rotation pin on the back of the sensor is engaged in the clearance hole of the C-pillar. 3. Install and tighten the nut (1) that secures the sensor to the weld stud on the inner C-pillar. Tighten the nut to 7 N.m (62 in. lbs.). 4. Reinstall the trim onto the inside of the lower C-pillar. Refer to INSTALLATION . 5. Do not reconnect the battery negative cable at this time. The Supplemental Restraint System (SRS) verification test procedure should be performed following service of any SRS component. See

Standard procedure

OCCUPANT CLASSIFICATION MODULE
figure
figure