Signal Too High

Signal too high

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

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PERMANENT - Checking the wiring and component

INTERMITTENT - Intermittent fault

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Checking the wiring and component
Check knock sensor (KS) connector. Check for contact resistance and oxidation.
Check the cable between control module terminal #A46 and knock sensor (KS) terminal 1. Check for an open-circuit. Check for a short-circuit to supply voltage.
Check the cable between control module terminal #A64 and knock sensor (KS) terminal 2. Check for an open-circuit. Check for a short-circuit to supply voltage.
Remedy as necessary.

Other information:
- To localize the knock sensor (KS), see
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box
- For information about signals, see Signal specification Signal Description / Specification
- Checking wiring and terminals Checking Wiring And Terminals.









Was a fault found in the wiring or connector?

Yes - Verification

No - Replacing the component

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Replacing the component




Try a new knock sensor (KS) according to Knock sensor (KS), replacing Service and Repair.


Continue - Verification

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Intermittent fault
The control module has previously registered a fault. The fault is now no longer present.


Continue - Fault-tracing information

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Verification




Verification

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








- Ignition off.
- Reconnect connectors, reinstall components
- Start the engine and rev it once (above 1000 rpm).
- 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) displayed as intermittent?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - Fault Found

VERIFICATION FAILED - Fault-tracing information

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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 - FAULT-TRACING FAILED

No - Attempt New Test

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Attempt New Test - Status check

FAULT-TRACING FAILED - FAULT-TRACING FAILED

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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

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Attempt New Test - Status check

FAULT FOUND - DONE

DONE - DONE

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