DTC Descriptor
DTC C0267 : Low Brake Fluid IndicatedDiagnostic Fault Information
Important: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Low Brake Fluid Signal Circuit | C0267¹ | C0130 | -- | -- |
¹Low brake fluid level | ||||
Circuit/System Description
The electronic brake control module (EBCM) sends 12 volts across the low brake fluid circuit. The brake fluid level sensor has an internal resistor between the contacts of the normally open switch. The EBCM can determine the difference between low brake fluid and an open circuit by calculating the current change of the low brake fluid signal circuit when the switch closes or the circuit becomes open.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The EBCM detects low brake fluid.
Action Taken When the DTC Sets
| • | The EBCM disables the traction control system (TCS)/dynamic rear proportion (DRP)/vehicle stability enhancement system (VSES) for the duration of the ignition cycle. |
| • | The Brake Warning indicator turns ON. |
| • | The driver information center (DIC) displays the BRAKE SYSTEM/SERVICE TRACTION messages. |
Conditions for Clearing the DTC
| • | The condition for setting 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
The brake fluid level switch has an internal resistor between the fluid level sensor signal circuit and the ground circuit. Even though the switch is open, a resistance value will appear across both terminals of the brake fluid level switch.
Reference Information
Schematic Reference
Brake Warning System Schematics
Connector End View Reference
Hydraulic Brake Connector End Views
Electrical Information Reference
Scan Tool Reference
Circuit/System Verification
Fill the brake reservoir up to the proper level and make sure the DTC does not reset.
Circuit/System Testing
- Verify that the brake fluid reservoir is filled to the proper level and the hydraulic brake system is not leaking. Cycle the ignition from OFF to ON. Clear the DTC with the scan tool.
- Disconnect the low brake fluid harness connector. At the harness connector, measure for 9 volts or greater on the low brake fluid signal circuit with a DMM.
| ⇒ | If DTC C0267 does not reset, the system is OK. |
| ⇒ | If voltage is below 9 volts, check for a short to ground on the low brake fluid signal circuit. |
| ⇒ | If voltage is above 9 volts, go to Component Testing. |
Component Testing
Ignition OFF, disconnect the brake fluid switch harness connector. Measure for 1 K ohms to 3 K ohms between the 2 terminals of the low brake fluid switch.
| ⇒ | If the resistance of the low brake fluid switch is below 1 K ohms or above 3 K ohms, replace the low brake fluid switch. |
| ⇒ | If resistance is between 1 K ohms and 3 K ohms and a short to ground in the low brake fluid signal circuit was not found, replace the EBCM. |
Repair Instructions
Important: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for EBCM replacement, setup, and programming |
