C0267

DTC C0267

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.



DTC Descriptor
DTC C0267
- Low Brake Fluid Indicated




Diagnostic Fault Information






Circuit/System Description

The brake fluid level switch monitors the level of brake fluid in the master cylinder. When the instrument panel cluster (IPC) sees the brake fluid level switch input grounded, it turns ON the Red Brake Warning indicator and sends a serial data message to the electronic brake control module (EBCM) that the brake fluid level is low.


Conditions for Running the DTC

The ignition is ON.


Conditions for Setting the DTC

Low brake fluid is detected.


Action Taken When the DTC Sets

* The EBCM disables the antilock brake system (ABS)/traction control system (TCS) dynamic rear proportion (DRP) and vehicle stability enhancement system (VSES).
* The ABS indicator illuminates.
* The Traction Control indicator illuminates.
* The Red Brake Warning indicator illuminates.



Conditions for Clearing the DTC

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



Diagnostic Aids

Ensure the master cylinder reservoir is at the proper fluid level.


Reference Information
Schematic Reference

Hydraulic Brake Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views
Electrical Information Reference

* Circuit Testing
* Connector Repairs
* Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs

Scan Tool Reference

Control Module References for Scan Tool Information


Circuit/System Verification

1. Inspect for proper brake fluid level, the fluid level should be at or above the proper level.

• If low, refer to Brake Fluid Loss (Brake Fluid Loss) .

2. Ignition ON, observe the scan tool EBCM Brake Fluid parameter. The reading should be OK.



Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the brake fluid level switch.
2. Test for less than 1 ohm of resistance between the ground circuit terminal A and ground.

• If greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition ON, verify the scan tool EBCM Brake Fluid parameter is OK.

• If not the specified value, test the signal circuit for a short to ground. If the circuit tests normal, replace the IPC.

4. Install a 3A fused jumper wire between the signal circuit terminal B and ground. Verify the scan tool EBCM Brake Fluid parameter is Low.

• If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the IPC.

5. If all circuits test normal, test or replace the brake fluid level switch.



Component Testing

1. Ignition OFF, disconnect the harness connector at the brake fluid level switch.
2. Test for less than 2300 ohms between the ground terminal A and the signal terminal B.

• If greater than specified value, replace the brake fluid level switch.




Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

* Brake Fluid Level Indicator Switch Replacement (Service and Repair)
* Control Module References for IPC replacement, setup, and programming