Signal Missing

Signal missing

Checking the status




- Start the engine.
Check whether the fault is permanent or intermittent. Read off the engine speed (RPM) sensor fault status when the diagnostic status is "Completed".
The fault is permanent if the fault status is "Fault found". The fault is intermittent if the fault status is "No fault detected".










Continue - Checking the component and wiring

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Checking the component and wiring
Check the engine speed (RPM) sensor connector. Check for contact resistance and oxidation.
Check the resistance of the engine speed (RPM) sensor between terminals #1 and #2.
Check the signal cable between engine speed (RPM) sensor terminal #1 and engine control module (ECM) terminal #A77 (#B17). Check for an open-circuit. Check for a short-circuit to supply voltage. Check for a short-circuit to ground.
Check the power cable between engine speed (RPM) sensor terminal #2 and engine control module (ECM) terminal #A53 (#A53). Check for an open-circuit. Check for a short-circuit to supply voltage. Check for a short-circuit to ground.
Remedy as necessary.

Hint: The diagnostic trouble code (DTC) can be caused by damage in the flywheel / carrier plate. Look for damage to the flywheel / carrier plate.

Other information
- Connecting the breakout box Connecting The Breakout Box, Engine Control Module (ECM)
- Signal specification Signal Specification, Engine Control Module (ECM)
- Component specifications [1][2]Electrical Specifications
- Crankshaft position sensor (CKP) Service and Repair
- Checking wiring and terminals Checking Wiring and Terminals.














Continue - Verification

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Verification




Verification

Verification

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




- Reinstall the connectors, components etc.
- Start the engine.
Check that the diagnostic is "Completed" and that the fault status is "No fault detected".





Is the fault status "No fault detected"?

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 status

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