P179A78

The redundancy system for DIRECT SELECT has a malfunction. The adaptation or adjustment is incorrect.


Possible cause:

- A80 (Intelligent servo module for DIRECT SELECT)
Affected functions:

- Drive position selection

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Test 1: Remedial action in the event of a fault in the internal mechanical systems of component A80 (Intelligent servo module for DIRECT SELECT)

1. Remedial action in the event of a fault in the internal mechanical systems of component A80 (Intelligent servo module for DIRECT SELECT)
POSSIBLE CAUSES

- Selector lever position "P" was engaged due to a fault occurring in component A80 (Intelligent servo module for DIRECT SELECT) or in the vehicle communications.
Question

- Are other fault codes stored in addition to fault code P179A78?


YES
Preconditions

- There are additional current fault codes shown in control unit A80 (Intelligent servo module for DIRECT SELECT).
Possible remedy

- Process displayed fault codes in control module A80 (Intelligent servo module for DIRECT SELECT).
End of test

NO
Preconditions

- No further current fault codes are stored in control unit A80 (Intelligent servo module for DIRECT SELECT).
Possible remedy

- Perform calibration.
Continue with button "F2"

Perform calibration.
Test prerequisite

- Engine OFF
- Vehicle should be stationary.
- Apply and hold the brakes.
Question

- Is control module ISM to be learned?


YES
Warning!Communication with ECU required.


NO

1. No further information available.