Checking Wiring And Connectors

Check the connector for the air conditioning (A/C) relay. Check for contact resistance and oxidation. Check for loose connections.

Check the signal cable between control module terminal #B44 and air conditioning (A/C) relay terminal #4. Check the power supply between system relay terminal #3 and A/C relay terminal #2. Check for an intermittent open-circuit.

Other information 

• To connect the breakout box / access the control module, see CONNECTING THE BREAKOUT BOX
• For 5 cylinder turbocharged engines -2004, see SIGNAL DESCRIPTION
• For 6 cylinder engines 2005-, see SIGNAL SPECIFICATION .
• see CHECKING WIRING AND TERMINALS .

Fig 1: Identifying Connector Terminals

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Ohm Meter

Courtesy of VOLVO CARS CORPORATION

Fig 3: Identifying A/C Relay

Courtesy of VOLVO CARS CORPORATION

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  Refer to INFORMATION