Checking the wiring

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Disconnecting Connector

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off
• Disconnect connector D on the rear electronic module (REM).

  The diagnostic trouble code (DTC) is stored if there is no communication between the rear electronic module (REM) and the parking assistance module (PAM). This may be due to a fault in the signal cable between the control modules or a defective communication device in one or all of the control modules.

  Check the signal cable. Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.

  Take readings between:

  • Rear electronic module (REM) terminal #D32 (#32) and parking assistance module (PAM) terminal #A12.

  Remedy as necessary.

  Other information 

  • See Connecting the breakout box
  • See Signal specification
  • See Parking assistance module (PAM), replacing
  • See Checking wiring and terminals

Was a fault detected? 

• YES 

  Refer to Verification 

• NO 

  Refer to Replacing the control module