Checking wiring and connectors

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.

Fig 1: Identifying Ignition OFF

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition off.
Check the connector on the leak diagnostic pump for loose connections according to Loose connections (terminals) and contact resistance and oxidation according to Contact resistance and oxidation .

Check the signal cable between engine control module (ECM) terminal 41 and leak diagnostic pump terminal 4 for an intermittent open-circuit according to Open-circuit, intermittent faults .

Check the power supply cable between system relay terminal 5 (87) and leak diagnostic pump terminal 2 for an intermittent open-circuit according to Open-circuit, intermittent faults .

Remedy as necessary.

Other information
- To connect the breakout box, see Connecting the breakout box. EMS 2000
- To access / replace the leak diagnostic pump, see Replacing the leak diagnostic pump
- For information about signals, see Signal specification .
Fig 2: Identifying Leak Diagnostic Pump Connector Terminals
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Ohmmeter
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 4: Identifying System Relay Base Connector Terminals
Courtesy of VOLVO CARS OF NORTH AMERICA.

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