‹

Gear Sensor/Switch

Transmission and Drivetrain › Sensors and Switches - Transmission and Drivetrain
Unified entry — merged from multiple cross-listed pages in the original manual.
Procedures
MP1522 Transfer Case — Shift Motor with Mode Sensor - Removal5 steps
ℹ NOTE
New shift motor assemblies are shipped in the NEUTRAL position. If a new shift motor assembly must be installed, it will be necessary to shift the transfer case to the NEUTRAL position prior to motor installation.
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  1. Raise the vehicle on a suitable hoist.
  2. Disengage the wiring connector from the shift motor and mode sensor assembly.
  3. Remove the bolts (1) holding the shift motor and mode sensor assembly (2) onto the transfer case.
  4. Separate the shift motor and mode sensor assembly (1) from the transfer case (3) and shift sector (2). Figure 3 - SHIFT MOTOR SEAL RING
  5. Remove the seal ring (1) from the shift motor (2).
MP1522 Transfer Case — Shift Motor with Mode Sensor - Installation6 steps
ℹ NOTE
Verify that the missing tooth (2) in the shift motor drive spline (1).
ℹ NOTE
.and the transfer case drive spline (1) missing tooth (2) are aligned. It may be necessary to manually shift the transfer case if the shift motor and transfer case shaft are not aligned.
△ CAUTION
If the original shift motor and mode sensor assembly bolts are reused, be sure to use Mopar(R) Lock AND Seal or Loctite(TM) 242 to replenish the lock patch material originally found on the bolts
Fig. 1
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Fig. 8
  1. Install the seal ring (1) onto the shift motor (2).
  2. Verify that the shift motor o-ring is clean and properly positioned inside the machined o-ring groove of the shift motor.
  3. Position the shift motor and mode sensor assembly (1) onto the transfer case (3) and shift sector (2).
  4. Install the bolts (1) to hold the assembly (2) onto the transfer case. Tighten the bolts to 25-28 Nm (18.5-20.5 ft.lbs.).
  5. Engage the wiring connector to the shift motor and mode sensor assembly.
  6. Lower vehicle and verify transfer case operation.
MP3022 Transfer Case — Mode Sensor - Removal4 steps
Fig. 1
Fig. 1
Fig. 2
Fig. 2
  1. Remove the wiring harness electrical connector from the encoder.
  2. Remove the screws securing the encoder to the rear transfer case housing.
  3. Remove the encoder from the transfer case.
  4. Remove the o-ring seal from the encoder.
MP3022 Transfer Case — Mode Sensor - Installation4 steps
ℹ NOTE
Before installing the encoder onto the transfer case, be certain to align the encoder shaft to the shift shaft and the dowel on the encoder to the hole in the case accordingly.
Fig. 1
Fig. 1
Fig. 2
Fig. 2
  1. Install a NEW o-ring seal onto the encoder.
  2. Install the encoder onto the rear transfer case housing.
  3. Install the encoder screws. Tighten the screws to 5-8 Nm (44-71 in.lbs.).
  4. Install the electrical wiring harness connector onto the encoder.
MP1522 Transfer Case — Mode Sensor - Operationreference
ℹ NOTE
All the parameter voltages referred to in the following information are calibrated items in the controller software and are subject to change.
Fig. 1
Fig. 1
OPERATION During normal vehicle operation, the DTCM monitors the mode sensor outputs at least every 2 milliseconds when the shift motor is stationary or active. The mode sensor position will be considered invalid by the DTCM if the voltage is greater than 3.51 V or if it is less than 1.52 V. The DTCM shall consider -case position based on the MODE SENSOR VOLTAGES table listed below. MODE SENSOR VOLTAGES
MP1522 Transfer Case — Shift Motor with Mode Sensor - Descriptionreference
Fig. 1
Fig. 1
Fig. 2
Fig. 2
DESCRIPTION Figure 1 - MP1522 TRANSFER CASE The shift motor (3) is an electromechanical device consisting of a DC permanent magnet motor, a gear train and an analog position sensor. The shift motors' overall function is to move and lock a gear that moves the range fork found in the transfer case. This allows the transfer case to be shifted electrically to multiple operating positions (4WD LOW, 4WD LOCK and 2WD). The operating current of the shift motor under stall conditions is 30 amps maximum at 72° F with 13.5 volts, at the motor leads.
MP1522 Transfer Case — Mode Sensor - Descriptionreference
Fig. 1
Fig. 1
Fig. 2
Fig. 2
DESCRIPTION Figure 1 - MP1522 TRANSFER CASE The transfer case mode sensor, also known as "Encoder" (3) which is integrated into the shift motor assembly, provides the Drivetrain Control Module (DTCM) feedback about the position of the transfer case. The sensor consists of a linear analog position sensor that converts the motor output shaft position into a DC signal. The sensor may rotate a full 360 degrees. The DTCM must supply 5V DC (±2.5%) to the sensor whenever the DTCM is not in sleep mode and monitors the shift motor position. The sensor position is monitored when the ignition is in the RUN position and for TBD seconds after the ignition is shifted to the ACC position. The sensor is mechanically linked to the shaft of the cam which allows the transfer case to shift. The mode sensor will draw less than 30 mA of current during operation.
MP3022 Transfer Case — Mode Sensor - Operationreference
ℹ NOTE
All the parameter voltages referred to in the following information are calibrated items in the controller software and are subject to change.
Fig. 1
Fig. 1
OPERATION During normal vehicle operation, the DTCM monitors the mode sensor outputs at least every 2 milliseconds when the shift motor is stationary or active. The mode sensor position will be considered invalid by the DTCM if the voltage is greater than 4.75 V or if it is less than 0.25 V. The DTCM shall consider Transfer Case position based on the MODE SENSOR VOLTAGES table listed below: MODE SENSOR VOLTAGES
MP3022 Transfer Case — Mode Sensor - Descriptionreference
Fig. 1
Fig. 1
Fig. 2
Fig. 2
DESCRIPTION Figure 1 - MP3022 TRANSFER CASE The transfer case Encoder (3) provides the Final Drive Control Module (FDCM) feedback about the position of the transfer case. The sensor consists of a linear analog position sensor that converts the motor output shaft position into a DC signal. The sensor may rotate a full 360 degrees. The FDCM must supply 5VDC (+/- 0.5v) to the sensor whenever the FDCM is not in sleep mode and monitors the shift motor position. The sensor position is monitored when the ignition is in the RUN position and for 10 seconds after the ignition is shifted to the OFF position. The sensor is mechanically linked to the shaft of the cam which allows the transfer case to shift. The mode sensor will draw less than 20 mA of current during operation.
MP1522 Transfer Case — Shift Motor with Mode Sensor - Removal5 steps
ℹ NOTE
New shift motor assemblies are shipped in the NEUTRAL position. If a new shift motor assembly must be installed, it will be necessary to shift the transfer case to the NEUTRAL position prior to motor installation.
Fig. 1
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Fig. 6
  1. Raise the vehicle on a suitable hoist.
  2. Disengage the wiring connector from the shift motor and mode sensor assembly.
  3. Remove the bolts (1) holding the shift motor and mode sensor assembly (2) onto the transfer case.
  4. Separate the shift motor and mode sensor assembly (1) from the transfer case (3) and shift sector (2). Figure 3 - SHIFT MOTOR SEAL RING
  5. Remove the seal ring (1) from the shift motor (2).
MP1522 Transfer Case — Shift Motor with Mode Sensor - Installation6 steps
ℹ NOTE
Verify that the missing tooth (2) in the shift motor drive spline (1).
ℹ NOTE
.and the transfer case drive spline (1) missing tooth (2) are aligned. It may be necessary to manually shift the transfer case if the shift motor and transfer case shaft are not aligned.
△ CAUTION
If the original shift motor and mode sensor assembly bolts are reused, be sure to use Mopar(R) Lock AND Seal or Loctite(TM) 242 to replenish the lock patch material originally found on the bolts
Fig. 1
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Fig. 8
Fig. 8
  1. Install the seal ring (1) onto the shift motor (2).
  2. Verify that the shift motor o-ring is clean and properly positioned inside the machined o-ring groove of the shift motor.
  3. Position the shift motor and mode sensor assembly (1) onto the transfer case (3) and shift sector (2).
  4. Install the bolts (1) to hold the assembly (2) onto the transfer case. Tighten the bolts to 25-28 Nm (18.5-20.5 ft.lbs.).
  5. Engage the wiring connector to the shift motor and mode sensor assembly.
  6. Lower vehicle and verify transfer case operation.
MP3022 Transfer Case — Mode Sensor - Removal4 steps
Fig. 1
Fig. 1
Fig. 2
Fig. 2
  1. Remove the wiring harness electrical connector from the encoder.
  2. Remove the screws securing the encoder to the rear transfer case housing.
  3. Remove the encoder from the transfer case.
  4. Remove the o-ring seal from the encoder.
MP3022 Transfer Case — Mode Sensor - Installation4 steps
ℹ NOTE
Before installing the encoder onto the transfer case, be certain to align the encoder shaft to the shift shaft and the dowel on the encoder to the hole in the case accordingly.
Fig. 1
Fig. 1
Fig. 2
Fig. 2
  1. Install a NEW o-ring seal onto the encoder.
  2. Install the encoder onto the rear transfer case housing.
  3. Install the encoder screws. Tighten the screws to 5-8 Nm (44-71 in.lbs.).
  4. Install the electrical wiring harness connector onto the encoder.
MP1522 Transfer Case — Mode Sensor - Operationreference
ℹ NOTE
All the parameter voltages referred to in the following information are calibrated items in the controller software and are subject to change.
Fig. 1
Fig. 1
OPERATION During normal vehicle operation, the DTCM monitors the mode sensor outputs at least every 2 milliseconds when the shift motor is stationary or active. The mode sensor position will be considered invalid by the DTCM if the voltage is greater than 3.51 V or if it is less than 1.52 V. The DTCM shall consider -case position based on the MODE SENSOR VOLTAGES table listed below. MODE SENSOR VOLTAGES
MP1522 Transfer Case — Shift Motor with Mode Sensor - Descriptionreference
Fig. 1
Fig. 1
Fig. 2
Fig. 2
DESCRIPTION Figure 1 - MP1522 TRANSFER CASE The shift motor (3) is an electromechanical device consisting of a DC permanent magnet motor, a gear train and an analog position sensor. The shift motors' overall function is to move and lock a gear that moves the range fork found in the transfer case. This allows the transfer case to be shifted electrically to multiple operating positions (4WD LOW, 4WD LOCK and 2WD). The operating current of the shift motor under stall conditions is 30 amps maximum at 72° F with 13.5 volts, at the motor leads.
MP1522 Transfer Case — Mode Sensor - Descriptionreference
Fig. 1
Fig. 1
Fig. 2
Fig. 2
DESCRIPTION Figure 1 - MP1522 TRANSFER CASE The transfer case mode sensor, also known as "Encoder" (3) which is integrated into the shift motor assembly, provides the Drivetrain Control Module (DTCM) feedback about the position of the transfer case. The sensor consists of a linear analog position sensor that converts the motor output shaft position into a DC signal. The sensor may rotate a full 360 degrees. The DTCM must supply 5V DC (±2.5%) to the sensor whenever the DTCM is not in sleep mode and monitors the shift motor position. The sensor position is monitored when the ignition is in the RUN position and for TBD seconds after the ignition is shifted to the ACC position. The sensor is mechanically linked to the shaft of the cam which allows the transfer case to shift. The mode sensor will draw less than 30 mA of current during operation.
MP3022 Transfer Case — Mode Sensor - Operationreference
ℹ NOTE
All the parameter voltages referred to in the following information are calibrated items in the controller software and are subject to change.
Fig. 1
Fig. 1
OPERATION During normal vehicle operation, the DTCM monitors the mode sensor outputs at least every 2 milliseconds when the shift motor is stationary or active. The mode sensor position will be considered invalid by the DTCM if the voltage is greater than 4.75 V or if it is less than 0.25 V. The DTCM shall consider Transfer Case position based on the MODE SENSOR VOLTAGES table listed below: MODE SENSOR VOLTAGES
MP3022 Transfer Case — Mode Sensor - Descriptionreference
Fig. 1
Fig. 1
Fig. 2
Fig. 2
DESCRIPTION Figure 1 - MP3022 TRANSFER CASE The transfer case Encoder (3) provides the Final Drive Control Module (FDCM) feedback about the position of the transfer case. The sensor consists of a linear analog position sensor that converts the motor output shaft position into a DC signal. The sensor may rotate a full 360 degrees. The FDCM must supply 5VDC (+/- 0.5v) to the sensor whenever the FDCM is not in sleep mode and monitors the shift motor position. The sensor position is monitored when the ignition is in the RUN position and for 10 seconds after the ignition is shifted to the OFF position. The sensor is mechanically linked to the shaft of the cam which allows the transfer case to shift. The mode sensor will draw less than 20 mA of current during operation.
MP1522 Transfer Case — Shift Motor with Mode Sensor - Removal5 steps
ℹ NOTE
New shift motor assemblies are shipped in the NEUTRAL position. If a new shift motor assembly must be installed, it will be necessary to shift the transfer case to the NEUTRAL position prior to motor installation.
Fig. 1
Fig. 1
Fig. 2
Fig. 2
Fig. 3
Fig. 3
Fig. 4
Fig. 4
Fig. 5
Fig. 5
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Fig. 6
  1. Raise the vehicle on a suitable hoist.
  2. Disengage the wiring connector from the shift motor and mode sensor assembly.
  3. Remove the bolts (1) holding the shift motor and mode sensor assembly (2) onto the transfer case.
  4. Separate the shift motor and mode sensor assembly (1) from the transfer case (3) and shift sector (2). Figure 3 - SHIFT MOTOR SEAL RING
  5. Remove the seal ring (1) from the shift motor (2).
MP1522 Transfer Case — Shift Motor with Mode Sensor - Installation6 steps
ℹ NOTE
Verify that the missing tooth (2) in the shift motor drive spline (1).
ℹ NOTE
.and the transfer case drive spline (1) missing tooth (2) are aligned. It may be necessary to manually shift the transfer case if the shift motor and transfer case shaft are not aligned.
△ CAUTION
If the original shift motor and mode sensor assembly bolts are reused, be sure to use Mopar(R) Lock AND Seal or Loctite(TM) 242 to replenish the lock patch material originally found on the bolts
Fig. 1
Fig. 1
Fig. 2
Fig. 2
Fig. 3
Fig. 3
Fig. 4
Fig. 4
Fig. 5
Fig. 5
Fig. 6
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Fig. 7
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Fig. 8
Fig. 8
  1. Install the seal ring (1) onto the shift motor (2).
  2. Verify that the shift motor o-ring is clean and properly positioned inside the machined o-ring groove of the shift motor.
  3. Position the shift motor and mode sensor assembly (1) onto the transfer case (3) and shift sector (2).
  4. Install the bolts (1) to hold the assembly (2) onto the transfer case. Tighten the bolts to 25-28 Nm (18.5-20.5 ft.lbs.).
  5. Engage the wiring connector to the shift motor and mode sensor assembly.
  6. Lower vehicle and verify transfer case operation.
MP3022 Transfer Case — Mode Sensor - Removal4 steps
Fig. 1
Fig. 1
Fig. 2
Fig. 2
  1. Remove the wiring harness electrical connector from the encoder.
  2. Remove the screws securing the encoder to the rear transfer case housing.
  3. Remove the encoder from the transfer case.
  4. Remove the o-ring seal from the encoder.
MP3022 Transfer Case — Mode Sensor - Installation4 steps
ℹ NOTE
Before installing the encoder onto the transfer case, be certain to align the encoder shaft to the shift shaft and the dowel on the encoder to the hole in the case accordingly.
Fig. 1
Fig. 1
Fig. 2
Fig. 2
  1. Install a NEW o-ring seal onto the encoder.
  2. Install the encoder onto the rear transfer case housing.
  3. Install the encoder screws. Tighten the screws to 5-8 Nm (44-71 in.lbs.).
  4. Install the electrical wiring harness connector onto the encoder.
MP1522 Transfer Case — Mode Sensor - Operationreference
ℹ NOTE
All the parameter voltages referred to in the following information are calibrated items in the controller software and are subject to change.
Fig. 1
Fig. 1
OPERATION During normal vehicle operation, the DTCM monitors the mode sensor outputs at least every 2 milliseconds when the shift motor is stationary or active. The mode sensor position will be considered invalid by the DTCM if the voltage is greater than 3.51 V or if it is less than 1.52 V. The DTCM shall consider -case position based on the MODE SENSOR VOLTAGES table listed below. MODE SENSOR VOLTAGES
MP1522 Transfer Case — Shift Motor with Mode Sensor - Descriptionreference
Fig. 1
Fig. 1
Fig. 2
Fig. 2
DESCRIPTION Figure 1 - MP1522 TRANSFER CASE The shift motor (3) is an electromechanical device consisting of a DC permanent magnet motor, a gear train and an analog position sensor. The shift motors' overall function is to move and lock a gear that moves the range fork found in the transfer case. This allows the transfer case to be shifted electrically to multiple operating positions (4WD LOW, 4WD LOCK and 2WD). The operating current of the shift motor under stall conditions is 30 amps maximum at 72° F with 13.5 volts, at the motor leads.
MP1522 Transfer Case — Mode Sensor - Descriptionreference
Fig. 1
Fig. 1
Fig. 2
Fig. 2
DESCRIPTION Figure 1 - MP1522 TRANSFER CASE The transfer case mode sensor, also known as "Encoder" (3) which is integrated into the shift motor assembly, provides the Drivetrain Control Module (DTCM) feedback about the position of the transfer case. The sensor consists of a linear analog position sensor that converts the motor output shaft position into a DC signal. The sensor may rotate a full 360 degrees. The DTCM must supply 5V DC (±2.5%) to the sensor whenever the DTCM is not in sleep mode and monitors the shift motor position. The sensor position is monitored when the ignition is in the RUN position and for TBD seconds after the ignition is shifted to the ACC position. The sensor is mechanically linked to the shaft of the cam which allows the transfer case to shift. The mode sensor will draw less than 30 mA of current during operation.
MP3022 Transfer Case — Mode Sensor - Operationreference
ℹ NOTE
All the parameter voltages referred to in the following information are calibrated items in the controller software and are subject to change.
Fig. 1
Fig. 1
OPERATION During normal vehicle operation, the DTCM monitors the mode sensor outputs at least every 2 milliseconds when the shift motor is stationary or active. The mode sensor position will be considered invalid by the DTCM if the voltage is greater than 4.75 V or if it is less than 0.25 V. The DTCM shall consider Transfer Case position based on the MODE SENSOR VOLTAGES table listed below: MODE SENSOR VOLTAGES
MP3022 Transfer Case — Mode Sensor - Descriptionreference
Fig. 1
Fig. 1
Fig. 2
Fig. 2
DESCRIPTION Figure 1 - MP3022 TRANSFER CASE The transfer case Encoder (3) provides the Final Drive Control Module (FDCM) feedback about the position of the transfer case. The sensor consists of a linear analog position sensor that converts the motor output shaft position into a DC signal. The sensor may rotate a full 360 degrees. The FDCM must supply 5VDC (+/- 0.5v) to the sensor whenever the FDCM is not in sleep mode and monitors the shift motor position. The sensor position is monitored when the ignition is in the RUN position and for 10 seconds after the ignition is shifted to the OFF position. The sensor is mechanically linked to the shaft of the cam which allows the transfer case to shift. The mode sensor will draw less than 20 mA of current during operation.
MP1522 Transfer Case — Shift Motor with Mode Sensor - Removal5 steps
ℹ NOTE
New shift motor assemblies are shipped in the NEUTRAL position. If a new shift motor assembly must be installed, it will be necessary to shift the transfer case to the NEUTRAL position prior to motor installation.
Fig. 1
Fig. 1
Fig. 2
Fig. 2
Fig. 3
Fig. 3
Fig. 4
Fig. 4
Fig. 5
Fig. 5
Fig. 6
Fig. 6
  1. Raise the vehicle on a suitable hoist.
  2. Disengage the wiring connector from the shift motor and mode sensor assembly.
  3. Remove the bolts (1) holding the shift motor and mode sensor assembly (2) onto the transfer case.
  4. Separate the shift motor and mode sensor assembly (1) from the transfer case (3) and shift sector (2). Figure 3 - SHIFT MOTOR SEAL RING
  5. Remove the seal ring (1) from the shift motor (2).
MP1522 Transfer Case — Shift Motor with Mode Sensor - Installation6 steps
ℹ NOTE
Verify that the missing tooth (2) in the shift motor drive spline (1).
ℹ NOTE
.and the transfer case drive spline (1) missing tooth (2) are aligned. It may be necessary to manually shift the transfer case if the shift motor and transfer case shaft are not aligned.
△ CAUTION
If the original shift motor and mode sensor assembly bolts are reused, be sure to use Mopar(R) Lock AND Seal or Loctite(TM) 242 to replenish the lock patch material originally found on the bolts
Fig. 1
Fig. 1
Fig. 2
Fig. 2
Fig. 3
Fig. 3
Fig. 4
Fig. 4
Fig. 5
Fig. 5
Fig. 6
Fig. 6
Fig. 7
Fig. 7
Fig. 8
Fig. 8
  1. Install the seal ring (1) onto the shift motor (2).
  2. Verify that the shift motor o-ring is clean and properly positioned inside the machined o-ring groove of the shift motor.
  3. Position the shift motor and mode sensor assembly (1) onto the transfer case (3) and shift sector (2).
  4. Install the bolts (1) to hold the assembly (2) onto the transfer case. Tighten the bolts to 25-28 Nm (18.5-20.5 ft.lbs.).
  5. Engage the wiring connector to the shift motor and mode sensor assembly.
  6. Lower vehicle and verify transfer case operation.
MP3022 Transfer Case — Mode Sensor - Removal4 steps
Fig. 1
Fig. 1
Fig. 2
Fig. 2
  1. Remove the wiring harness electrical connector from the encoder.
  2. Remove the screws securing the encoder to the rear transfer case housing.
  3. Remove the encoder from the transfer case.
  4. Remove the o-ring seal from the encoder.
MP3022 Transfer Case — Mode Sensor - Installation4 steps
ℹ NOTE
Before installing the encoder onto the transfer case, be certain to align the encoder shaft to the shift shaft and the dowel on the encoder to the hole in the case accordingly.
Fig. 1
Fig. 1
Fig. 2
Fig. 2
  1. Install a NEW o-ring seal onto the encoder.
  2. Install the encoder onto the rear transfer case housing.
  3. Install the encoder screws. Tighten the screws to 5-8 Nm (44-71 in.lbs.).
  4. Install the electrical wiring harness connector onto the encoder.
MP1522 Transfer Case — Mode Sensor - Operationreference
ℹ NOTE
All the parameter voltages referred to in the following information are calibrated items in the controller software and are subject to change.
Fig. 1
Fig. 1
OPERATION During normal vehicle operation, the DTCM monitors the mode sensor outputs at least every 2 milliseconds when the shift motor is stationary or active. The mode sensor position will be considered invalid by the DTCM if the voltage is greater than 3.51 V or if it is less than 1.52 V. The DTCM shall consider -case position based on the MODE SENSOR VOLTAGES table listed below. MODE SENSOR VOLTAGES
MP1522 Transfer Case — Shift Motor with Mode Sensor - Descriptionreference
Fig. 1
Fig. 1
Fig. 2
Fig. 2
DESCRIPTION Figure 1 - MP1522 TRANSFER CASE The shift motor (3) is an electromechanical device consisting of a DC permanent magnet motor, a gear train and an analog position sensor. The shift motors' overall function is to move and lock a gear that moves the range fork found in the transfer case. This allows the transfer case to be shifted electrically to multiple operating positions (4WD LOW, 4WD LOCK and 2WD). The operating current of the shift motor under stall conditions is 30 amps maximum at 72° F with 13.5 volts, at the motor leads.
MP1522 Transfer Case — Mode Sensor - Descriptionreference
Fig. 1
Fig. 1
Fig. 2
Fig. 2
DESCRIPTION Figure 1 - MP1522 TRANSFER CASE The transfer case mode sensor, also known as "Encoder" (3) which is integrated into the shift motor assembly, provides the Drivetrain Control Module (DTCM) feedback about the position of the transfer case. The sensor consists of a linear analog position sensor that converts the motor output shaft position into a DC signal. The sensor may rotate a full 360 degrees. The DTCM must supply 5V DC (±2.5%) to the sensor whenever the DTCM is not in sleep mode and monitors the shift motor position. The sensor position is monitored when the ignition is in the RUN position and for TBD seconds after the ignition is shifted to the ACC position. The sensor is mechanically linked to the shaft of the cam which allows the transfer case to shift. The mode sensor will draw less than 30 mA of current during operation.
MP3022 Transfer Case — Mode Sensor - Operationreference
ℹ NOTE
All the parameter voltages referred to in the following information are calibrated items in the controller software and are subject to change.
Fig. 1
Fig. 1
OPERATION During normal vehicle operation, the DTCM monitors the mode sensor outputs at least every 2 milliseconds when the shift motor is stationary or active. The mode sensor position will be considered invalid by the DTCM if the voltage is greater than 4.75 V or if it is less than 0.25 V. The DTCM shall consider Transfer Case position based on the MODE SENSOR VOLTAGES table listed below: MODE SENSOR VOLTAGES
MP3022 Transfer Case — Mode Sensor - Descriptionreference
Fig. 1
Fig. 1
Fig. 2
Fig. 2
DESCRIPTION Figure 1 - MP3022 TRANSFER CASE The transfer case Encoder (3) provides the Final Drive Control Module (FDCM) feedback about the position of the transfer case. The sensor consists of a linear analog position sensor that converts the motor output shaft position into a DC signal. The sensor may rotate a full 360 degrees. The FDCM must supply 5VDC (+/- 0.5v) to the sensor whenever the FDCM is not in sleep mode and monitors the shift motor position. The sensor position is monitored when the ignition is in the RUN position and for 10 seconds after the ignition is shifted to the OFF position. The sensor is mechanically linked to the shaft of the cam which allows the transfer case to shift. The mode sensor will draw less than 20 mA of current during operation.