Faulty Signal. Permanent Fault

Faulty signal. Permanent fault

Checking the wiring and component




- Ignition off
- Check the control module and knock sensor (KS) connectors. Check for contact resistance and oxidation according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the signal cable between control module terminal #51 and knock sensor (KS) terminal #1. Check for a short-circuit to ground according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the ground lead between control module terminal #76 and knock sensor (KS) terminal #2. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check the screened cable between control module terminal #19 and knock sensor (KS) terminal #3. Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault. Check for an open-circuit according to Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Check that the knock sensor (KS) is not loose.
Try a new knock sensor (KS) if no fault is found during the above fault-tracing.
Remedy as necessary.

Other information
- To connect the breakout box and access the control module, see Connecting the breakout box. EMS 2000 Connecting The Breakout Box. EMS 2000
- To access or replace the knock sensor (KS), see Replacing the knock sensor (KS) Service and Repair.













Continue - Verification

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Verification




Verification

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












- Reinstall the components, reconnect the connectors etc.
- Connect VCT2000
- Start the engine
- Rev the engine to 4000 rpm a couple of times
- Read off diagnostic trouble codes (DTCs)

Has the status of the diagnostic trouble code (DTC) changed to intermittent?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFICATION FAILED - Fault-tracing information

VERIFIED - FAULT FOUND

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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 - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Checking the wiring and component

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