SAAB WIS ONLINE

C1372

Read the instructions below then start the fault diagnostic procedure.

Symptom: ABS warning lamp on. ABS not functioning.

C1372


Wheel Sensor Front Left. No Signal


Fault symptoms

ABS warning lamp on. ABS not functioning.

Conditions

DTC is generated by open circuit.

Diagnostic help




• FL wheel speed sensor signal can be read using diagnostic tool.



- Select “Read Values”.

- Select “ Wheel Speed Front Left “.


The current wheel speed in km/h is displayed.

With the front of the car raised off the ground, the diagnostic tool should show a reading of about 5 km/h when the FL wheel is rotated by hand at a speed of about one turn a second.


• For tracing electrical faults, the diagnostic tool can be used to take readings from the control module's wheel-sensor inputs.



- Select “Read Values”

- Select “Wheel-sensor output”


The reading is used to determine whether there is a break in the circuit between the control module and one of the wheel sensors. If the circuit is OK, the reading should be approximately 3.4 V.

If the circuit to the front left wheel is not OK, the value will be about 2.7 V.