Electrical - Battery Discharged/Code 93AB Set

SI B 61 14 07
General Electrical Systems

December 2007
Technical Service

SUBJECT
Battery Discharged KGM FC 93AB MPM Relay Sticking

MODEL
E60, E61 (5 Series) from 9/05 production

E63, E64 (6 Series) from 9/05 production

SITUATION
The customer states that the "High Rate of Battery Discharge" check control message is displayed. A short test indicates KGM (Body Gateway Module) fault code "93AB MPM Relay Sticking" is one of many faults stored in the vehicle.

CAUSE
Battery discharged

PROCEDURE
Check the operation of the KGM MPM relay as follows:

1. After a short test is performed, follow the test plan linked to KGM fault code 93AB.

2. Continue in the test plan and select "[2] Function check MPM".

3. In the next step of the test plan, the MPM relay is switched from off to on.

4. If the relay is working properly, the CCC, MASK or CHAMP will switch off and on.

5. If the component switches off and on, the KGM is working properly and should not be replaced.

6. If the KGM is not switching the MPM, replace the KGM (note: in most cases the KGM is not faulty).

7. Continue troubleshooting the battery discharged issue by completing the "Energy Diagnosis" test plan. Refer to SI B61 13 05 and SI B61 08 00 for further information.

8. A revision to the DIS test plan will be made for this fault with DIS V53.

WARRANTY INFORMATION
For information only.





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