Signal Too Low

Signal too low

Information

Note! The diagnostic trouble code may be caused by a physical object blocking the engine, which results in the crankshaft not being able to turn. Check the engine for visible objects that may cause the blockage.

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.

Hint: The components and its cables are sensitive to interference from nearby cables, such as the starter motor cable or a similar cable with a high current rating.

Interference may cause difficult engine start, the engine does not start at all or intermittent function of the tachometer, etc. Check whether any cables with high power consumption are incorrectly installed, i.e. too close to the engine speed (RPM) sensor or its wiring.
Check that the engine speed (RPM) sensor is correctly installed.
Remedy as necessary.

Other information
- Connecting the breakout box, B5254T7 Connecting the Breakout Box, Engine Control Module (ECM)
- Signal specification, B5254T7 Signal Specification
- Component specifications, B5254T7 [1][2]Engine Control Module
- Checking wiring and terminals Checking Wiring and Terminals





Continue - Verification

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Verification




Verification

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








- Ignition off
- Reconnect the connectors, reinstall components etc.
- Start the engine. The fault has not been remedied if the engine does not start.
Read off the diagnostic status and fault status for the diagnostic trouble code (DTC) by selecting the relevant diagnostic trouble code (DTC) from the list.
Increase the engine speed to 2500 rpm until the diagnostic is "Complete".
Check the fault status for the diagnostic trouble code (DTC) when the diagnostic is "Complete". If the function is correct, the fault status must be "No fault found" when the diagnostic is complete.





Is the function OK?

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 - Information

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