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Home >> Volvo >> 2008 >> S40 T-5, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 35 (Electronic Control Module (ECM) Diagnostic Trouble Codes - 1 Of 3 (644 Body)) >> ECM-38: Ignition Coil 1. Signal Too High. Intermittent Fault (B4204T2 CVVT; 2000) >> Signal too high. Intermittent fault >> Checking wiring and components

Checking wiring and components

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 cable between ignition coil terminal 1 and engine control module (ECM) terminal #32 (ECM-38), #1 (ECM-3A) for an intermittent short-circuit to supply voltage and remedy according to Short-circuit to supply voltage, intermittent faults .

If no faults are found in the above fault-tracing try a new ignition coil.

Other information 

Fig 1: Identifying EMS2000
GLL111998Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Voltage Display
GLL101041Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 3: Identifying Outside Temperature Sensor Connector Terminal 2
GLL118164Courtesy of VOLVO CARS OF NORTH AMERICA.