Checking the 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.
Check the engine control module (ECM) and transmission control module (TCM) connectors. Check for contact resistance and oxidation according to Contact resistance and oxidation .
Check for loose or damaged terminal pins.
Reconnect the connectors.
Start the engine.
Read off the status of the diagnostic trouble code (DTC).
Did the status change to intermittent?
- YES
Refer to Verification
- NO
Refer to Checking wiring