PSG16 / P0500 FA
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Fault indicator lamp (for further information see WIS Fault diagnosis, general)
Incorrect display of speed and fuel consumption.
Cruise control not working.
Vehicle Speed Signal not Plausible with Engine Speed
Fault symptom
Fault indicator lamp (for further information see WIS Fault diagnosis, general)
Incorrect display of speed and fuel consumption.
Cruise control not working.
On-board diagnosis
Type of diagnosis:
Enable criteria:
| Engine speed over 2700 rpm. |
| More than 30 mg fuel/combustion. |
Fault criteria:
| Speed is 0 km/h at 30 mg/combustion and rpm over 2700. |
System reaction to a fault:
| The control module uses a substitute value of 0 km/h. |
| Cruise control switched off. |
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
Vehicle speed signal sent via Bus to PSG16.
See fault diagnosis for the TCS/ESP DTC in question and bus fault diagnosis.
