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Home >> Volvo >> 2008 >> S40 T-5, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 43 (Electronic Control Module (ECM) Diagnostic Trouble Codes - 3 Of 3 (644 Body)) >> ECM-91: Torque Reduction. Initialization Fault. Intermittent Fault (B4204T2 CVVT; 2000) >> Initiation fault. Intermittent fault >> Checking wiring

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 the DSA control module and engine control module (ECM) connectors for contact resistance and oxidation according to Contact resistance and oxidation .

Check in particular for damaged or loose terminal pins.

Check the signal cable between the engine control module (ECM) #20 and DSA control module terminal 15 for an intermittent open-circuit and remedy according to Open-circuit, intermittent faults .

Fig 1: Identifying Ohmmeter
GLL101042Courtesy of VOLVO CARS OF NORTH AMERICA.
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