Checking The Component And Wiring

Check the fuse for the circuit.

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

Check the signal cable between engine control module (ECM) terminal #B10 (#C10) and air conditioning (A/C) relay terminal #2. Check for an open-circuit.

Check the power cable between the fuse and air conditioning (A/C) relay terminal #1. Check for an open-circuit.

Remedy as necessary.

Other information 

• see CONNECTING THE BREAKOUT BOX
• see SIGNAL SPECIFICATION (2005), or SIGNAL SPECIFICATION (2006-2007)
• see CHECKING WIRING AND TERMINALS

Fig 1: Identifying VCT2000 Diagnostic Tool Symbol In VIDA

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying A/C Relay

Courtesy of VOLVO CARS CORPORATION

• Continue 

  Refer to VERIFICATION