Checking The Gear-Shift Position Sensor

Fig 1: Identifying Ignition ON

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• Ignition on
• Select the correct type of gear selector assembly. Read off the position of the gear-shift position sensor.

  Shift the gear selector to all gear positions several times. Check that the gear positions are updated. The gear position sensor is incorrectly adjusted if the display shows an undefined position (OR for example).

  Adjust the gear-shift position sensor if necessary. Then re-check the gear-shift position sensor.

  Other information: 

  • To adjust the gear-shift position sensor, For B5xx4T2, see GEAR SELECTOR CABLES, ADJUSTING or For B6xx4T, see GEAR SELECTOR CABLE, ADJUSTING
  • To access the transmission connector, see CONNECTING THE BREAKOUT BOX, GM AUTOMATIC TRANSMISSIONS
  • To access the control module connector, see CONNECTING THE BREAKOUT BOX .

  Select an option: 

  1. The gear positions are updated correctly

     Refer to INTERMITTENT FAULT 

  2. The gear positions are not updated correctly

     Refer to CHECKING THE WIRING 

  3. The gear-shift position sensor has been adjusted.

     Refer to VERIFICATION 

  Fig 2: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

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HINT: The gear-shift position sensor may malfunction if there has been a short-circuit to supply voltage in the signal cable. Check the gear-shift position sensor as follows: 

Fig 1: Identifying Ignition ON

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Fig 2: Identifying Connector

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Fig 3: Identifying Control Unit Connected

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• Ignition off
• Transmission connector connected
• Control module connected.
• Ignition on
• Select the correct type of gear selector assembly. Read off the position of the gear-shift position sensor.

  Move the gear selector to all shift positions a number of times. Repeatedly select the same position to check the operation of the gear-shift position sensor.

  Fig 4: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

  Courtesy of VOLVO CARS CORPORATION

Are all positions OK? 

• YES 

  Refer to VERIFICATION 

• NO 

  Refer to REPLACING THE COMPONENT