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Courtesy lights

Read the instructions below then start the fault diagnostic procedure.

Symptom: Courtesy lights out of order.

Courtesy lights


Fault symptoms

Courtesy lights out of order.



Diagnostic help

Check fuse 8.

The following values can be read with the diagnostic tool:


- Driver's door (bus from TWICE)

- Passenger door (bus from TWICE)

- Passenger door rear right (bus from TWICE)

- Passenger door rear left (bus from TWICE)


Using the diagnostic tool, the following value can be activated:


- Courtesy lights


Checking the wiring harness

Jiggle the wiring harness at several points and in several directions to detect intermittent open circuits and short circuits. Note the reaction of the multimeter, test lamp or diagnostic tool during the check.