SAAB WIS ONLINE

EDC16 / P0500 52

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.

  P0500 52


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:

Continuous

Enable criteria:

Engine running.
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

Diagnosis regards:

Speed signal sent via bus to EDC16.
See fault diagnosis for the TCS/ESP DTC in question and bus fault diagnosis.
Electrical fault on bus leads or in the component.