Incorrect Gear Ratios

Incorrect gear ratios

Checking the gear position sensor adjustment




- Ignition on.
- Read off the selector lever position.
Move the selector lever to a different position and check that the gear position is updated.

Hint: If the display shows an undefined position , e.g. O2, the gear position sensor is incorrectly adjusted.

Rectify as necessary

General information:
- For adjusting the gear position sensor, see Checking and adjusting the gear-shift position sensor Adjustments.









Is the gear-shift position sensor incorrectly adjusted?

Yes - Verification

No - Checking contact resistance and oxidation

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Checking noise from the transmission
- Test drive the car, see Test Drive Form, description Test Drive Form, Description.
- Check if the transmission produces any obvious noise or has functional faults.





Is there transmission noise or malfunction?

Yes - Replacing the transmission

No - FAULT FOUND

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Checking contact resistance and oxidation




- Ignition off.
Check the control module connector and connectors A and B of the transmission with respect to contact resistance and oxidation, see Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault






Continue - Checking noise from the transmission

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Replacing the transmission

Note! In the event of internal faults during the first year on the market, the AW55-50SN transmission should be replaced.

Replace the transmission as described in Removing the transmission Transmission, Removal.





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, components, etc.
- Ignition on
Test drive the vehicle following: Test drive schedule, description Test Drive Form, Description
During the test drive, oil temperature should be over 20 °C.
Note any deviations in transmission function.

Does the transmission function flawlessly?

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 gear position sensor adjustment

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