C0490 06

C0490 06

ISM-SCL, Unsecure Lockingbolt Circuit, Open/Short to Ground







Fault symptom
- Messages shown in SID.
- Steering column lock not working.
- Possible that ignition key cannot be turned.

On-board diagnosis

Type of diagnosis:
- Continuous

Enable criteria:
- Diagnostics runs when key is removed.

Fault criteria:
- Lead ISM-SCL shorted to ground/open-circuit.

System reaction to a fault:
- Steering column lock deactivated.
- The control module does not allow starter motor cranking.

Checking the wiring harness
- Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.

Diagnostic help

Diagnosis regards:
- Electrical fault in connecting leads or component.

Functions in the diagnostic tool related to the fault:

Test value:
- SCL Voltage, Unlocked and Secured
(See also description of readings/activations in diagnostic tool)

- ISM-SCL, Unsecure Lockingbolt Circuit, Open/Short to Ground