2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 827

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 827

Circuit/System Description

The wheel speed sensor receives ignition voltage from the electronic brake control module (EBCM) and provides a DC square wave signal back to

the module. As the wheel spins, the EBCM uses the frequency of the square wave signal to calculate the wheel speed.

Conditions for Running the DTC

C0035 02 and 05-C0050 02 and 05

Ignition ON.

C0035 18-C0050 18

* Ignition ON.

* No other wheel speed circuit DTCs are set.

* The brake pedal is not pressed.

* Two or three other wheel speeds are greater than 0 km/h.

C0035 0F-C0050 0F

* Ignition ON.

* The brake pedal is not pressed.

* A DTC is not set for the other wheel speed circuit on the same axle.

Conditions for Setting the DTC

C0035 02-C0050 02

A short to ground is detected on the wheel speed 12-volt reference or signal circuit.

C0035 05-C0050 05

A short to voltage, or an open is detected on 12-volt reference or the signal circuit.

C0035 0F-C0050 0F

* An erratic signal output of the wheel speed sensor is detected 3 times in 200 milliseconds.

* The EBCM detects a change in wheel speed that exceeds 20 km/h (12 mph) between two 10 millisecond wheel speed samples. This must be

detected 3 times in 200 milliseconds.

* A missing wheel speed sensor signal

Actions Taken when the DTC Sets

* The EBCM disables the antilock brake system (ABS) and StabiliTrak for the duration of the ignition cycle.

* The ABS indicator turns ON.

* The traction control off indicator turns ON.

Conditions for Clearing the DTC

* A current DTC clears when the diagnostic runs and passes.