C0132

DTC C0132

Circuit Description
During calibration of the offset of the pressure sensor signal, the pressure sensor signal offset value must be in the range of 1-15 Bar (1-434 psi).
The pressure sensor is also monitored for sensitivity via a correlation between estimated vehicle deceleration and the pressure sensor signal. This is monitored over the course of numerous straight line non antilock brake system (ABS) braking stops.

DTC Descriptors
This diagnostic procedure supports the following DTC's:
DTC C0132 Antilock Brake System (ABS)/Traction Control System (TCS) Pressure Circuit Range/Performance

Conditions for Running the DTC
^ The ignition is ON.
^ The vehicle speed is greater than 40 km/h (25 mph).

Conditions for Setting the DTC
^ The sensor signal offset value is out of range for more than 1 second.
^ The brake pedal is not applied.
^ The ABS pump is not ON.
^ The brake pressure sensor sensitivity is outside a predetermined range.
^ The brake pressure sensor indicates low brake fluid pressure, and the brake pedal position sensor indicates brakes applied.

Action Taken When the DTC Sets
If equipped, the following actions occur:
^ The electronic brake control module (EBCM) disables the ABS/traction control system (TCS)/vehicle stability enhancement system (VSES) for the duration of the ignition cycle.
^ A malfunction DTC will set.
^ The ABS indicator turns ON.
^ The Stability Off indicator turns ON.
^ The red BRAKE warning indicator could turn ON.

Conditions for Clearing the DTC
^ The condition for the DTC is no longer present.
^ A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.
^ Using a scan tool

Diagnostic Aids
^ A malfunctioning pressure sensor
^ A malfunctioning EBCM
^ Test the brake pedal position sensor (BPPS) for proper operation, and adjustment. An improperly adjusted BPPS will set the DTC.

Test Description

Step 1 - Step 10:

Step 11 - Step 17:

The numbers below refer to the step numbers on the diagnostic table.
2. This step tests for DTC's set in the Body Control Module BCM Lighting Systems for a malfunctioning BPPS.
3. This step tests for specified voltage on the brake pressure signal circuit.
4. This step checks to see if voltage was below specified voltage.
5. This step checks to see if voltage was above specified voltage.
6. This step checks to see if voltage was above specified voltage of the 5-volt reference.
7. This step checks to see if 5-volt reference from the EBCM is 5 volts.
8. This step checks to see if resistance of the ground circuit is less than 5 ohms.
9. This step tests for a short to voltage in the 5-volt reference circuit.
10. This step tests for a short to ground, a high resistance, or an open in the 5-volt reference circuit.
11. This step tests for a short to voltage in the brake pressure sensor signal circuit.
12. This step tests for a high resistance or an open in the ground circuit.
13. This step checks the brake pressure sensor connector for poor connections.
14. This step checks to EBCM connector for poor connections.