C0267

DTC C0267

Diagnostic Instructions

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

DTC Descriptor
DTC C0267 00
- Low Brake Fluid Indicated

Diagnostic Fault Information






Circuit/System Description

The brake fluid level switch monitors the level of brake fluid in the brake fluid reservoir.

Conditions for Running the DTC

Vehicle in Service Mode

Conditions for Setting the DTC

* A short to ground detected on the brake fluid level signal circuit for 60 seconds.
* Low brake fluid level is detected for 60 seconds.

Action Taken When the DTC Sets

One or more of the following actions may occur:

* The vehicle stability enhancement system (VSES) and traction control system (TCS) is disabled.
* A DIC message and/or a warning indicator may be displayed.

Conditions for Clearing the DTC

The condition for setting the DTC is no longer present.

Reference Information
Schematic Reference

Hydraulic Brake Schematics [1][2]Electrical Diagrams
Connector End View Reference

Component Connector End Views Hybrid/EV Battery Pack X1
Description and Operation

Brake Warning System Description and Operation Brake Warning System
Electrical Information Reference

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

Scan Tool Reference

Control Module References Programming and Relearning for scan tool information

Circuit/System Verification

1. Inspect for proper brake fluid level. The fluid level should be above the minimum level.

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

2. Vehicle in Service Mode, observe the scan tool Brake Fluid Level Sensor parameter. The reading should be OK.

Circuit/System Testing

1. Vehicle OFF, disconnect the harness connector at the B20 brake fluid level switch.
2. Test for less than 10 ohm between the ground circuit terminal B and ground.

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

3. Vehicle in Service Mode, test for 12.0-12.8 V between the sensor signal circuit terminal A and ground.

• If outside specified range, test the signal circuit terminal A for a short to ground.

Note: The parameter may take up to 60 seconds to switch from OK to Low.

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

• If not the specified value, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the K17 electronic brake control module (EBCM).

5. If all circuits test normal, test or replace the B20 brake fluid level switch.

Component Testing

1. Vehicle OFF, disconnect the harness connector at the B20 brake fluid level switch.
2. Test for 9.5-10.5 Kohm between the ground circuit terminal B and the signal circuit terminal A with the switch in the open position.

• If outside the specified range, replace the B20 brake fluid level switch.

3. Test for less than 5 ohm between the signal terminal A and ground terminal B with the switch in the closed position.

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

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

* Master Cylinder Reservoir Replacement Service and Repair
* Control Module References Programming and Relearning for EBCM replacement, programming and setup