Signal Missing
Signal missing
Status check
Reading off the status of the diagnostic trouble code (DTC)
Engine control module (ECM)
Reading off the status of the diagnostic trouble code (DTC):
Note! When reading off the DTC status, other stored diagnostic trouble codes (DTCs) and their status will also be listed.
- Start the engine. Let it idle for at least 15 seconds.
- Read off the diagnostic trouble code (DTC) status. Check the status of the relevant diagnostic trouble code (DTC).
Was the status of the relevant diagnostic trouble code (DTC) permanent?
Yes - PERMANENT
No - INTERMITTENT
------------------------
PERMANENT - Checking the wiring
INTERMITTENT - Intermittent fault
-------------------------------------------------
Checking the wiring
Check the resistance between connector terminal #1 and terminal #2 on the camshaft reset valve. The resistance must be approximately 3.7 ohms.
Check the signal cable between engine control module (ECM) terminal #A12 and connector terminal #2 (on the camshaft reset valve). Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Remedy as necessary.
Other information:
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box
- To access and replace the camshaft reset valve, see Variable valve timing solenoid, replacing Removal and Replacement
- With the ignition on and the reset valve connector disconnected, the voltage at connector #1 must be approximately Ubat and at connector terminal #2 it must be a pulse modulated signal with a peak voltage of approximately Ubat and with a frequency of approximately 250 Hz
- For information about signals, see Signal specification Signal Description / Specification.
Continue - Verification
-------------------------------------------------
Intermittent fault
Signal missing. Intermittent fault
Checking wiring and connectors
Check the signal cable between engine control module (ECM) terminal #A12 and connector terminal #2 (on the camshaft reset valve). Check for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Check the power supply cablenbsp;terminal #5 and connector terminal #1 (on the camshaft reset valve). Check for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Other information:
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box
- To access and replace the camshaft reset valve, see Variable valve timing solenoid, replacing Removal and Replacement
- With the ignition on and the reset valve connector disconnected, the voltage at connector #1 must be approximately Ubat and at connector terminal #2 it must be a pulse modulated signal with a peak voltage of approximately Ubat and with a frequency of approximately 250 Hz
- For information about signals, see Signal specification Signal Description / Specification.
Continue - Fault-tracing information
------------------------
Fault-tracing information
Information
Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).
Do you want to view the information again?
Yes - Attempt New Test
No - Fault Found
------------------------
Attempt New Test - Checking wiring and connectors
FAULT FOUND - DONE
DONE - DONE
-------------------------------------------------
DONE - DONE
-------------------------------------------------
Verification
Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off
- Reinstall the connectors, components etc.
- Start the engine
- Check that the actual and desired values for the reset valve are approximately the same. Increase the engine speed slightly if required.
Is the function OK?
Yes - VERIFIED
No - VERIFICATION FAILED
------------------------
VERIFIED - Fault Found
VERIFICATION FAILED - Fault-tracing information
-------------------------------------------------
Fault-tracing information
Information
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.
Do you want to exit fault-tracing?
Yes - FAULT-TRACING FAILED
No - Attempt New Test
------------------------
Attempt New Test - Status check
FAULT-TRACING FAILED - FAULT-TRACING FAILED
-------------------------------------------------