PSG16 / P0504 FA
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Cruise control not working.
Brake Light/Cruise Switch. Plausibility Fault.
Fault symptom
Cruise control not working.
On-board diagnosis
Type of diagnosis:
Fault criteria:
| Logistic fault between brake light switch and cruise control brake switch for more than 180 seconds. |
System reaction to a fault:
| Cruise control switched off. |
OK report:
| Fault criteria NOT fulfilled. |
Checking the wiring harness
| • | Faults in the control module female connector can be the cause of the DTC. Check the connector with respect to oxidation, depressed pins and pin clamping force. |
| • | 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:
Functions in the diagnostic tool related to the fault:
| (See also description of readings/activations in diagnostic tool) |
