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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 - 8 Of 11 >> ECM-6400: Camshaft Reset Valve, Intake Signal Too Low Or Signal Missing (B6294S2; B6294T; 2002-2004) >> Signal too low or signal missing >> Checking the wiring

Checking the wiring

Check the fuse before the circuit. If the fuse is blown, check the circuit. Check for a short-circuit to ground.

Check the resistance of the camshaft reset valve between terminals #1 and #2.

The resistance must be approximately 3.7 Ω.

Check the signal cable between engine control module (ECM) terminal #A13 (#A13) and camshaft reset valve terminal #2. Check for an open-circuit. Check for a short-circuit to ground.

Check the power supply cable between system relay terminal #5 and camshaft reset valve terminal #1. Check for an open-circuit.

HINT: With the ignition on and the reset valve and camshaft connector disconnected, the voltage at connector terminal #1 must be approximately U bat. 

Remedy as necessary.

Other information: 

Fig 1: Identifying Camshaft Reset Valve Connector Terminals
GLL104010Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Ohm Meter
GLL101042Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 3: Identifying Camshaft Reset Valve
GLL103033Courtesy of VOLVO CARS OF NORTH AMERICA.