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Home >> Volvo >> 2004 >> S80 Base, 2.5 59, FWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control Module (ECM) Diagnostic Trouble Codes - 6 Of 11 >> ECM-4000 Canister Purge (Cp) Valve. Signal Too High. Permanent Fault (B5254T2; 2004) >> Signal too high. Permanent fault >> Checking components and wiring >> Notes

Checking components and wiring: Notes

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

Check the signal cable between control module terminal #A9 (#A9) and evaporative emission system (EVAP) valve terminal 2. Check for a short-circuit to supply voltage.

HINT: Use a test lamp with at least a 3 W bulb to determine whether the cable is short-circuited to supply voltage. 

Remedy as necessary.

Other information: 

Fig 1: Identifying Evaporative Emission System (EVAP) Valve Connector Terminals
GLL104075Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Voltage Display
GLL101041Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 3: Identifying Canister Purge (CP) Valve
GLL100939Courtesy of VOLVO CARS OF NORTH AMERICA.