Signal Too Low - Permanent Fault

ECM-6440 CAMSHAFT RESET VALVE
SIGNAL TOO LOW - PERMANENT FAULT

Checking cables



Check reset valve camshaft resistance between # 1 and # 2, resistance should be approximately 3.7 ohm.

Check the signal cable between engine control module (ECM) # A13 and camshaft reset valve # 2 for a short-circuit to ground according to [1][2]Checking Wiring and Terminals. Permanent Fault

Check power supply cable # 5 and camshaft reset valve # 1 for a short-circuit to ground according to [1][2]Checking Wiring and Terminals. Permanent Fault

Remedy as necessary.

Other information:
- To connect the breakout box Connecting the Breakout Box (ECM)
- To access/replace the camshaft reset valve, Variable Valve Timing Solenoid, Replacing
- With the ignition on and camshaft reset valve connector disconnected the voltage on connector # 1 should be approximately Ubat and connector # 2 be a pulse modulated signal with top voltage at approximately Ubat and with a frequency of approximately 250 Hz.
- For information about signals, see Diagnostic Parameters and Pinout Values. Signal Description, ME7, B5XX4T


Verification



Hint: After carrying out the repair, check that the fault has been remedied.

- Ignition off.
- Reinstall connectors, components etc.
- Ignition on.
- Start the engine.
- Increase engine speed (RPM) on the engine and Read the camshaft timing alterations.

Is the function OK?
Yes - Testing Complete.
No - Continue below.


Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed. Exit fault tracing for this diagnostic trouble code (DTC) or make another attempt.