SAAB WIS ONLINE

P0504

Read the instructions below then start the fault diagnostic procedure.

Symptom: CHECK ENGINE lamp on. Cruise control inoperative.

P0504


Brake Light/Cruise Switch. Plausibility Fault.



Fault symptoms


• CHECK ENGINE lamp on.

• Cruise control inoperative.


Conditions

The following conditions apply for this DTC:


• There is a logic fault between the brake light switch and the cruise control brake pedal switch that has lasted longer than 180 seconds. The following values should be present under the "Read value" menu in Tech2: Normal position (unmanipulated brake pedal), Brake lights off, Cruise control pedal switch = ON.


Diagnostic help

There is a pedal arm position that can generate a DTC due to the position of the sensors.

Note

A fault in the control module female connector can cause a trouble code. Check the contact for a bent pin, oxidation and tightness of pins. See Difficult faults in PSG16 despite trouble code