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Home >> Volvo >> 2008 >> S40 T-5, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 27 (Dynamic Stability Assist (DSA) & Electronic Control Module (ECM) Diagnostic Trouble Codes (644 Body)) >> ECM-5C: Canister Purge (Cp) Valve Signal. Signal Too Low. Intermittent Fault (B4204T2 CVVT; 2000) >> Signal too low. 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 signal cable between engine control module (ECM) terminal #4 and canister purge (CP) valve terminal #1. Check for an intermittent short-circuit to ground and remedy according to Short-circuit to ground, intermittent faults .

Other information 

Fig 1: Identifying Canister Purge (CP) Valve Terminals
GLL111977Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Ohmmeter
GLL101042Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 3: EMS2000
GLL111998Courtesy of VOLVO CARS OF NORTH AMERICA.