Signal Too Low

Signal too low

Checking function of the gear position sensor




- Ignition on
- Depress the brake pedal. Move the gear selector to "Quickshift" position
- Move the gear selector to + and check that the gear selection is updated in the display on the driver information module (DIM).
Move the gear selector to -. Check that the gear selection is updated.





Was the function OK?

Yes - DONE

No - Checking the transmission connectors

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Checking the transmission connectors




- Ignition off
- Remove the gear selector connector.
Check the connector (gear selector assembly). Check for bent or pressed in pins.
Check the power supply cable between gear selector module (GSM) terminal #1 and transmission control module (TCM) terminal #16 (#A46). Check for an open-circuit. Check for a short-circuit to ground.
Remedy as necessary.

Other information
- To remove the gear selector's connector, see: Top panel gear selector assembly, B5254T7, AW55-50/51SN Top Panel Gear Selector Assembly
- Checking wiring and terminals Checking Wiring and Terminals
- Signal specification, AW55-50/51SN Signal Specification, Transmission Control Module (TCM)






Continue - Verification

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Verification




Verification

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








- Ignition off
- Reinstall the components, reconnect the connectors etc.
- Ignition on
- Depress the brake pedal. Move the gear selector to "M" (Manual) position
- Move the gear selector to + and check that the gear selection is updated in the display on the driver information module (DIM)
- Move the gear selector to -. Check that the gear selection is updated.





Was 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

Attempt New Test - Checking the transmission connectors

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