U1501 01

U1501 01

K-line CIM-ISM, Short to Ground/B+







Fault symptom
- Messages shown in SID.
- Cannot turn key.
- Steering column lock not working.
- Engine does not start.

On-board diagnosis

Type of diagnosis:
- Continuous

Enable criteria:
- Diagnostics runs when key is inserted.

Fault criteria:
- No information from CIM can be sent to the ISM.

System reaction to a fault:
- K lead restart.
- Steering column lock deactivated.

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:
- Ignition Switch +50, K-Line from ISM
- Ignition Switch +B, K-Line from ISM
- Ignition Switch +X, K-Line from ISM
- Ignition Switch +15, K-Line from ISM
(See also description of readings/activations in diagnostic tool)