Diagnostic Aids

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.

Inspect the master cylinder reservoir for the proper brake fluid level.

DTC C0267

Step	Action	Yes	No
Schematic Reference: Brake Warning System Schematics Connector End View Reference: ABS Connector End Views in Antilock Brake System
1	Did you perform the Diagnostic System Check - Vehicle?	Go to Step 2	Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2	Inspect the brake fluid level. Is the brake fluid level OK?	Go to Step 3	Go to Brake Fluid Loss
3	Install a scan tool. Turn ON the ignition, with the engine OFF. With a scan tool, observe the Brake Fluid Switch parameter in the Instrument Panel Cluster data list. Does the scan tool indicate that the Brake Fluid Switch parameter is Low?	Go to Step 4	Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
4	Turn OFF the ignition. Disconnect the brake fluid level switch. Turn ON the ignition, with the engine OFF. With a scan tool, observe the Brake Fluid Switch parameter. Does the scan tool indicate that the Brake Fluid Switch parameter is Low?	Go to Step 6	Go to Step 5
5	Test the signal circuit of the brake fluid level switch for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 8	Go to Step 7
6	Replace the brake fluid level switch. Refer to Master Cylinder Fluid Level Sensor Replacement . Did you complete the replacement?	Go to Step 8	-
7	IMPORTANT: Perform the setup procedure for the replacement instrument panel cluster (IPC). Replace the IPC. Refer to Control Module References in Computer/Integrating Systems for replacement, setup and programming.Did you complete the replacement?	Go to Step 8	-
8	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 2