CIM / B1440 00
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Error message is shown on the display.
+B Circuit from ISM, Open
Fault symptom
Error message is shown on the display.
On-board diagnosis
Enable criteria:
Fault criteria:
| • | Control module receives a faulty signal from ISM (ignition switch). |
| • | Signal from the key does not match key position. |
System reaction to a fault:
| 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:
| Diagnostic trouble code can be generated with low battery voltage. |
| Electrical fault in connecting leads or component. |
Functions in the diagnostic tool related to the fault:
| Ignition Key Position +B, Wire from ISM |
| Ignition Switch +B, K-Line from ISM |
| (See also description of readings/activations in diagnostic tool) |
