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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. Signal Missing. Permanent Fault (B4204T2 CVVT; 2000) >> Signal missing. Permanent fault >> Checking wiring and terminals

Checking wiring and terminals

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

Remedy as necessary.

Fig 1: Identifying DSA Control Module Terminals
GLL118762Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Ohmmeter
GLL101042Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 3: Identifying EMS2000
GLL111998Courtesy of VOLVO CARS OF NORTH AMERICA.


Check the cable between engine control module (ECM) terminal #20 and DSA control module terminal #15. Check for a short-circuit to ground according to Short-circuit to ground, permanent faults . Check for a short-circuit to supply voltage according to Short-circuit to supply voltage. Permanent faults .

Remedy as necessary.

Fig 1: Identifying DSA Control Module Terminals
GLL118762Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Ohmmeter
GLL101042Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 3: Identifying EMS2000
GLL111998Courtesy of VOLVO CARS OF NORTH AMERICA.