C0547 01

C0547 01

ISM-SCL, Unsecure Lockingbolt Circuit, Short to B+







Fault symptom
- Cannot turn key.
- Messages shown in SID.
- Engine does not start.

On-board diagnosis

Type of diagnosis:
- Continuous

Enable criteria:
- Diagnostics runs when key is inserted.

Fault criteria:
- ISM-SCL lead short circuited to B+

System reaction to a fault:
- 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
- Key Capture. Steering Unlocked and Secured
(See also description of readings/activations in diagnostic tool)