CU GSM / U1500 08
Read the instructions below then
start the fault diagnostic procedure.
Symptom: No phone function.
Failed start-up of phone unit in CU
Fault symptom
No phone function.
On-board diagnosis
Enable criteria:
| Battery voltage must be between 9 - 16 V. |
| No starter motor cranking. |
Fault criteria:
| Control module on-board diagnostics has detected an internal communication fault. |
Diagnostic help
Change the control module.
See "Before changing a control module".
Diagnostic help
Diagnosis regards:
| To locate electrical faults in the control module internal electronics. |
Functions in the diagnostic tool related to the fault:
| See menu "All - Add/Remove" |
