Checking The Wiring

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Control Module Disconnected

Courtesy of VOLVO CARS CORPORATION

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

  The DTC means that communication does not work between the Rear electronic module (REM) and:

  • Inclination Sensor Module (ISM) (for vehicles with structure week -201127)
  • Siren (BBS) (for vehicles with structure week 201128-)

  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 #D26 (#26) and the inclination sensor module (ISM) terminal #2.

  Remedy as necessary.

  Other information 

  • see CONNECTING THE BREAKOUT BOX
  • see SIGNAL SPECIFICATION
  • see TILT SENSOR ALARM, REPLACING
  • see CHECKING WIRING AND TERMINALS
  • see ANTI-THEFT PROTECTION SIREN
  Fig 3: Identifying 10 Pin Connector Terminals

  Courtesy of VOLVO CARS CORPORATION

Was a fault detected? 

• YES 

  Refer to VERIFICATION 

• NO 

  Refer to REPLACING THE CONTROL MODULE