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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-Dc: Communication, Transmission Control Module (TCM). Faulty Signal. Intermittent Fault (B4204T2 CVVT; 2000) >> Faulty signal. Intermittent fault >> Check

Faulty signal. Intermittent fault: Check

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 signal cables between engine control module (ECM) terminals 57 and 27 and transmission control module (TCM) terminals 14 and 27 for a short-circuit to ground and remedy according to Short-circuit to ground, intermittent faults and for a short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults , short-circuit to each other and for an open-circuit according to Open-circuit, intermittent faults .

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

Check in particular for damage, or loose terminal pins.

Other information: 

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