• | 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. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Brake Warning Indicator Control | C0267 | -- | -- | -- |
Ground | -- | -- | -- | -- |
The brake fluid level switch monitors the level of brake fluid in the master cylinder. When the instrument panel cluster (IPC) sees the brake warning indicator control circuit grounded, it turns ON the red Brake indicator and sends a serial data message to the electronic brake control module (EBCM) that tells the EBCM that the brake fluid level is low.
The ignition is ON.
Low brake fluid is detected.
• | The EBCM disables the antilock brake system (ABS)/traction control system (TCS)/vehicle stability enhancement system (VSES)/dynamic rear proportion (DRP). |
• | The ABS indicator turns ON. |
• | The Traction Control indicator turns ON. |
• | The red Brake warning indicator turns ON. |
• | The driver information center (DIC) displays the Service Stability System message. |
• | 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. |
Antilock Brake System Connector End Views
Inspect the master cylinder reservoir for the proper brake fluid level.
⇒ | If brake fluid level is low, refer to Hydraulic Brake System Diagnosis . |
Important: This test should only be performed if brake fluid is not low.
⇒ | If the Brake indicator lamp is not illuminated, replace the brake fluid level switch. |
⇒ | If the Brake Fluid Switch parameter is Low, repair short to ground in brake warning indicator control circuit. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for EBCM replacement, setup, and programming |