Direction Indicators, No Power Supply (+30 Circuit)

Fault symptom
Direction indicators do not work.

Condition
No power supply (+30 circuit).

Diagnostic help
"Turn Signals" describes the procedures for fault diagnosis of direction indicators and hazard flashers.







Diagnostic procedure
1 Check fuse 22.
- Check that fuse 22 is intact and live.
- Connect the test lamp to fuse 22 and a good grounding point.

If the output side of the fuse is live, the test lamp should light up.
Does it light up?
[YES] Continue with point 2.
[NO] Change the fuse or continue fault diagnosis as described in "Power and Ground Distribution/+30 power supply". Testing and Inspection







2 Check the wiring connected to the VSS electronic control module
- Unplug the VSS electronic control module.
- Connect the test lamp to pins 22 and 13 of the electronic control module connector.

Does it light up?
[YES] Continue with point 3.
[NO] Check the wiring harness for continuity between pin 22 of the VSS electronic control module and fuse 22, including connectors. Rectify the fault.







3 Supply power directly to the direction indicators
- Connect a jumper lead between pins 22 and 24 of the electronic control module connector.
- Connect a jumper lead between pins 22 and 12 of the electronic control module connector.

The left-hand and right-hand direction indicators respectively should light up.
Do the direction indicators light up?
[YES] Continue with point 4.
[NO] Check the wiring harness for continuity between:
- pin 24 of the VSS control module and the connector, left-hand side direction indicator.
- pin 12 of the VSS control module and the connector, right-hand side direction indicator.

See fault diagnosis in Turn Signals, Hazard Warning Lamps". Rectify the fault.

4 Final test
Activate the hazard flashers and check whether they work.

Do the hazard flashers work?
[YES] The remedial measure taken was correct or the fault is of intermittent nature.
[NO] Continue as described in "Before Changing the Electronic Control Module". Before Changing the Electronic Control Module