Brake Warning Indicator Inoperative DRL Equipped
Circuit Description
The brake warning indicator illuminates when ground is applied to the brake warning indicator control circuit.
Test Description
The number below refers to the step number on the diagnostic table.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Brake Warning System Schematics | |||
1 | Did you review the Brake Warning System Description and Operation and perform the necessary inspections? | Go to Step 2 | |
2 | Verify a fault is present. Does the brake warning indicator function normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Does the brake warning indicator illuminate for 3 seconds and then turn OFF? | Go to Step 5 | Go to Step 4 |
4 |
Does the scan tool display DTC C0288? | Go to Diagnostic Trouble Code (DTC) List in Antilock Brakes | Go to Step 11 |
5 | Apply the park brake. Does the brake warning indicator illuminate? | Go to Step 20 | Go to Step 6 |
6 | Crank or start the engine while observing the brake warning indicator. Does the brake warning indicator illuminate when the ignition is turned to START? | Go to Step 7 | Go to Step 13 |
7 |
Does the brake warning indicator illuminate? | Go to Step 9 | Go to Step 8 |
8 | Repair the open in the park brake switch signal circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 27 | -- |
9 | Inspect for poor connections at the harness connector of the park brake warning switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 27 | Go to Step 10 |
10 | Replace the park brake warning switch. Refer to Parking Brake Indicator Switch Replacement in Park Brake. Did you complete the replacement? | Go to Step 27 | -- |
11 |
Does the brake warning indicator illuminate? | Go to Step 25 | Go to Step 12 |
Does the test lamp illuminate for 3 seconds and then turn OFF? | Go to Step 17 | Go to Step 16 | |
13 | Inspect for poor connections at the harness connector of the DRL control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 27 | Go to Step 14 |
14 | Test the brake warning indicator control circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 27 | Go to Step 15 |
15 | Replace the DRL control module. Refer to Daytime Running Lights (DRL) Control Module Replacement in Lighting Systems. Did you complete the replacement? | Go to Step 27 | -- |
16 | Repair the open in the brake warning indicator control circuit or the ABS pressure differential sensor signal circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 27 | -- |
17 | Inspect the brake warning indicator lamp for an open (burned out) filament. Refer to Instrument Cluster Bulb Replacement in Lighting systems. Did you find and correct the condition? | Go to Step 27 | Go to Step 18 |
18 | Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 27 | Go to Step 19 |
19 | Replace the instrument panel cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gages, and Console. Did you complete the replacement? | Go to Step 27 | -- |
20 |
Does the brake warning indicator illuminate? | Go to Step 21 | Go to Step 22 |
21 | Test the ground circuit of the brake pressure differential switch for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 27 | Go to Step 23 |
22 | Repair the open in the ABS pressure differential sensor signal circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 27 | -- |
23 | Inspect for poor connections at the harness connector of the brake pressure differential switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 27 | Go to Step 24 |
24 | Replace the brake pressure differential switch. Refer to Combination Valve Replacement . Did you complete the replacement? | Go to Step 27 | -- |
25 | Inspect for poor connections at the harness connector of the EBCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 27 | Go to Step 26 |
26 |
Important: Following EBCM replacement, use the scan tool to perform the Tire Size Calibration procedure. Replace the EBCM. Refer to Electronic Brake Control Module Replacement in Antilock Brake System. Did you complete the replacement? | Go to Step 27 | -- |
27 | Verify the system is repaired. Does the brake warning indicator function normally? | System OK | Go to Step 3 |
Brake Warning Indicator Inoperative Without DRLs
Circuit Description
The brake warning indicator illuminates when ground is applied to the brake warning indicator control circuit.
Test Description
The number below refers to the step number on the diagnostic table:
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Brake Warning System Schematics | |||
1 | Did you review the Brake Warning System Description and Operation and perform the necessary inspections? | Go to Step 2 | |
2 | Verify a fault is present. Does the brake warning indicator function normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Does the brake warning indicator illuminate for 3 seconds and then turn OFF? | Go to Step 5 | Go to Step 4 |
4 |
Does the scan tool display DTC C0288? | Go to Diagnostic Trouble Code (DTC) List in Antilock Brakes | Go to Step 10 |
5 | Apply the park brake. Does the brake warning indicator illuminate? | Go to Step 16 | Go to Step 6 |
6 |
Does the brake warning indicator illuminate? | Go to Step 8 | Go to Step 7 |
7 | Repair the open in the brake warning indicator control circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 23 | -- |
8 | Inspect for poor connections at the harness connector of the park brake warning switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | Go to Step 9 |
9 | Replace the park brake warning switch. Refer to Parking Brake Indicator Switch Replacement in Park Brake. Did you complete the replacement? | Go to Step 23 | -- |
10 |
Does the brake warning indicator illuminate? | Go to Step 21 | Go to Step 11 |
Does the test lamp illuminate for 3 seconds and then turn OFF? | Go to Step 13 | Go to Step 12 | |
12 | Repair the open in the brake warning indicator control circuit or the ABS pressure differential sensor signal circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 23 | -- |
13 | Inspect the brake warning indicator lamp for an open (burned out) filament. Did you find and correct the condition? | Go to Step 23 | Go to Step 14 |
14 | Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | Go to Step 15 |
15 | Replace the instrument panel cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gages, and Console. Did you complete the replacement? | Go to Step 23 | -- |
16 |
Does the brake warning indicator illuminate? | Go to Step 18 | Go to Step 17 |
17 | Repair the open in the ABS pressure differential sensor signal circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 23 | -- |
18 | Test the ground circuit of the brake pressure differential switch for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | Go to Step 19 |
19 | Inspect for poor connections at the harness connector of the brake pressure differential switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | Go to Step 20 |
20 | Replace the brake pressure differential switch. Refer to Combination Valve Replacement . Did you complete the replacement? | Go to Step 23 | -- |
21 | Inspect for poor connections at the harness connector of the EBCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | Go to Step 22 |
22 | Replace the EBCM. Refer to Electronic Brake Control Module Replacement in Antilock Brake System. Important: Following EBCM replacement, use the scan tool to perform the Tire Size Calibration procedure. Did you complete the replacement? | Go to Step 23 | -- |
23 | Verify the system is repaired. Does the brake warning indicator function normally? | System OK | Go to Step 3 |
