Checking cables

Check signal cable between control module #B44 (#B54) and air conditioning (A/C) relay #4 for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .

Other information: 

• To connect the breakout box, see Connecting the breakout box .
• To access/replace the control module, see Engine control module (ECM), replacing .
• To access/replace the air conditioning (A/C) relay, see Replacing relays in the main fuse box and other relays in the engine compartment .
• For information about signals, see Signal specification .

Fig 1: Identifying Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

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