Diagnostic Trouble Code (DTC) Information

Condition 

• Diagnostic trouble code (DTC) ECM-6440 is stored if the engine control module (ECM) registers a fault in the signal cable to the camshaft reset valve.

Substitute Value 

• shutting off the variable camshaft
• the camshaft remains in the maximum performance position

Possible Source 

Signal too high: 

• short-circuit to supply voltage in the signal cable
• defective reset valve

Signal too low: 

• short-circuit to ground in the signal cable
• power supply cable short-circuited to ground
• defective camshaft reset valve

Signal missing: 

• contact resistance
• open-circuit in signal cable
• open-circuit in the power supply cable
• defective camshaft reset valve

Fault symptom[s] 

• malfunction indicator lamp (MIL) lit
• uneven idle