B1736

Read the instructions below then start the fault diagnostic procedure.

Symptom: The lighting controlled by the rheostat is on full continuously. The rheostat does not work.

B1736

Fault symptoms

The lighting controlled by the rheostat is on full continuously. The rheostat does not work.

Conditions

Resistance greater than 20 kohm generates a diagnostic trouble code.

Diagnostic help

The rheostat and rheostat level can be read using the diagnostics tool. The rheostat should be between 0 V and 3.5 V and the rheostat position should correspond to this.

The rheostat level sent on the bus should be 25-100 % when the headlamps are ON.

Check wiring harness.

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