UHP / U2100 00
Read the instructions below then
start the fault diagnostic procedure.
UHP was Missing on Bus
On-board diagnosis
Enable criteria:
| Call/Voice control must not be active. |
Fault criteria:
| Control module absent on the I-bus. |
Checking the wiring harness
Jiggle the wiring harness at several points to detect intermittent breaks or short circuits. Check also the connector for oxidation or loose pins.
Diagnostic help
Diagnosis regards:
| Electrical fault in connecting leads or in the component (mainly poor contact). |
| During the response test, move the wiring harness to check that no bus lead/power supply or ground lead fault exists. In addition, check the condition of the connector and the pins. |
Functions in the diagnostic tool related to the fault:
| Response test, under "All/Bus" menu. |
