CHECK ENGINE warning lamp

Read the instructions below then start the fault diagnostic procedure.

Symptom: The CHECK ENGINE indicator lamp is inoperative.

CHECK ENGINE warning lamp

Fault symptoms

The CHECK ENGINE indicator lamp is inoperative.

Diagnostic help

The indicator lamp can be activated with the diagnostic tool.

Contact the engine management system concerned.

-	Select “Activate”

-	Select “CHECK ENGINE lamp”

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.