Checking wiring

WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.

Check that the resistance between the air conditioning (A/C) relay terminals 1 and 2 is approximately 105 Ω at +20 °C.

Check the signal cable between the engine control module (ECM) terminal #68 and air conditioning (A/C) relay terminal 2 for an intermittent short-circuit to ground and remedy according to Short-circuit to ground, intermittent faults .

Other information

To connect the breakout box, see Connecting the breakout box. EMS 2000 .

Fig 1: Identifying Air Conditioning (A/C) Relay Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying EMS2000

Courtesy of VOLVO CARS OF NORTH AMERICA.