Checking components and wiring

Check the signal cable (carphone mute). Check between accessory control module terminal #B12 and the radio connector. Check for a short-circuit to supply voltage. Check for an open-circuit.

Remedy as necessary.

Other information: 

• To connect the breakout box, see Connecting the breakout box. Accessory electronic module
• To access or replace the Accessory Electronic Module (AEM) and connector, see Accessory electronic module (AEM), replacing
• For information about signals, see Signal description. Accessory electronic module (AEM)
• To fault-trace wiring and terminals see Contents

Fig 1: Accessory Electronic Module Ground Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohm Meter

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Continue 

  Refer to Verification