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Home >> Volvo >> 2002 >> S60 Base, 2.4 61, Standard >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control Module (ECM) - Diagnostic Trouble Codes And Associated Procedures - 7 Of 14 >> ECM-421B: Canister Purge (Cp) Valve. Signal Missing (B5204T5; B5254T4; 2005-2007) >> Signal missing >> Checking >> Checking the components and wiring

Checking the components and wiring

Check the resistance of the evaporative emission system (EVAP) valve.

Check the signal cable between engine control module (ECM) terminal #A9 (#A9) and evaporative emission system (EVAP) valve terminal #2. Check for an open-circuit.

Check the power supply between system relay terminal #3 and evaporative emission system (EVAP) valve terminal #1. Check for an open-circuit.

Remedy as necessary.

Other information: 

Fig 1: Identifying 2-Bit Connector
GLL104075Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Canister Purge (CP) Valve
GLL107988Courtesy of VOLVO CARS OF NORTH AMERICA.