2010 Cadillac CTS Sedan AWD V6-3.6L Page 667

2010 Cadillac CTS Sedan AWD V6-3.6L Page 667

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.

* Ignition voltage is greater than 10 volts.

C0035 18-C0050 18

* Ignition ON.

* Ignition voltage is greater than 10 volts.

* 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.

* Ignition voltage is greater than 10 volts.

* 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, open/high resistance is detected on the wheel speed sensor signal circuit.

* Wheel speed sensor power supply is less than 7.6 volts.

C0035 05-C0050 05

A short to voltage, short to ground or an open/high resistance is detected on 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), traction control and StabiliTrak for the duration of the ignition cycle.

* A driver information center message and/or a warning indicator may be displayed.

Conditions for Clearing the DTC