C0136

DTC C0136

Circuit Description

The electronic brake control module (EBCM) uses the input from the brake fluid pressure sensor to enhance Antilock Brake System (ABS) braking and vehicle stability if equipped.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC C0136 Base Brake System Pressure Circuit





Conditions for Running the DTC

The ignition is ON for 1 second.

Conditions for Setting the DTC

C0136 00

One of the following conditions exists for 0.1 second.

* The brake fluid pressure sensor signal is greater than 4.9 volts.
* The brake fluid pressure sensor signal is less than 0.15 volt.

C0136 08

The EBCM performs a diagnostic test on the base brake system pressure circuit and sensor when the ignition is turned ON. If the diagnostic determines a faulty sensor or wiring, the DTC will set.

Action Taken When the DTC Sets

If equipped, the fallowing actions will occur.

* The EBCM disables the Vehicle Stability Enhancement System (VSES) for the duration of the ignition cycle.
* The Traction Control System (TCS) is degraded.
* Adaptive cruise control (ACC) braking function is disabled.
* The Traction Control and Active Handling indicator turns ON.
* The driver information center (DIC) displays the Service Active Handling message.

Conditions for Clearing the DTC

* The condition for the DTC is no longer present and the DTC is cleared with a scan tool.
* The EBCM automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles.

Diagnostic Aids

If equipped, the brake pressure sensor 5-volt reference circuit and low reference circuit is shared with other components in the vehicle stability system. DTCs can set for other components that share circuits with the brake pressure sensor.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

2. This step tests for the proper voltage output on the 5-volt reference circuit and the proper operation of the signal circuit.
3. This step tests for possible low 5-volt reference output or a problem with the signal circuit.
4. This step tests for a short to voltage on the 5-volt reference circuit. If a short to voltage exists, other DTCs may be set for the vehicle stability system if equipped.
8. This step tests for a problem with the low reference circuit. If a short to voltage exists, other DTCs may be set for the vehicle stability system if equipped.

Step 1 - Step 7:

Step 8 - Step 12: