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 IndicatedDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Signal | C0267 | -- | -- | -- |
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 turns ON. |
| • | The Traction Control indicator turns ON. |
| • | The Red Brake Warning indicator turns ON. |
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
Connector End View Reference
Hydraulic Brake Connector End Views
Electrical Information Reference
Scan Tool Reference
Circuit/System Verification
Ignition ON, observe the scan tool IPC Brake Fluid parameter. The reading should be OK when fluid is at the proper level, and low when the fluid is below the minimum level.
| ⇒ | If low, refer to Brake Fluid Loss . |
Circuit/System Testing
Important: This test should only be performed if brake fluid is not low.
- Ignition OFF, disconnect the harness connector at the brake fluid level switch.
- Test for less than 3 ohms of resistance between the ground circuit terminal A and ground.
- Ignition ON, verify the scan tool IPC Brake Fluid parameter is OK.
- Install a 3A fused jumper wire between the signal circuit terminal and ground. Verify the scan tool IPC Brake Fluid parameter is Low.
- If all circuits test normal, test or replace the brake fluid level.
| ⇒ | If greater than the specified range, test the ground circuit for an open/high resistance. |
| ⇒ | If not the specified value, test the signal circuit for a short to ground. If the circuit tests normal, replace the IPC. |
| ⇒ | 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. |
Component Testing
- Ignition OFF, disconnect the harness connector at the brake fluid level switch.
- Test for less than 4.0 ohms between the ground terminal A and the 5-volt reference 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.
| • | Control Module References for IPC replacement, setup, and programming |
