Warning Lamp, Charging

Warning Lamp, Charging

Fault symptoms
Charging warning lamp inoperative.

Check the wiring harness
Jiggle the wiring harness at several points and in different directions to detect intermittent breaks and short-circuits in the leads. Observe the multimeter, test lamp or diagnostic tool during the test.

Diagnostic procedure

1. Grounding, charging lamp
- Unplug connector: D+ terminal on generator: (2).






- Connect a jumper lead to a good grounding point.






- The charging lamp should light up.






Is the function correct?
YES
- Repair the generator, see "Charging system."
- Go to step 3.
NO
- Go to step 2.

2. Checking the lead
- Unplug connector: Main instrument unit's 20-pin connector: (540).






- Connect a test lamp to B+ and pin 3 of MIU K20.






- Connect a jumper lead between terminal D+ and a good ground.






- The test lamp should light up.






Is the function correct?
YES
- Replace : Charging lamp.
- Go to step 3.
NO
- Repair or replace the lead between D+ on the generator and pin 3 of the MIU's 20-pin connector.
- Go to step 3.

3. Final check
- Clear the diagnostic trouble codes in all systems.






- Perform a functional test.






Is the function correct?
YES
- The steps taken to rectify the fault were correct.
NO
- See Fault diagnosis, general, "Before changing a control module." Before Changing A Control Module