C107C

C107C - BRAKE PEDAL SWITCH 1/2 STUCK






For a complete wiring diagram, refer to Diagrams/Electrical. Electrical Diagrams

- When Monitored:

With the ignition on.
- Set Condition:

When the Anti-Lock Brake Module detects a mismatch between the two signals of the redundant stop lamp switch.






Diagnostic Test

1. CHECK FOR A DTC C107C-BRAKE PEDAL SWITCH 1/2 STUCK

NOTE: This DTC must be active for the results of this test to be valid.

Turn the ignition on.

With the scan tool, read and record DTCs.

With the scan tool, read and record Freeze Frame information.

With the scan tool, erase DTCs.

Cycle the ignition switch from off to on.

With the scan tool, read and record DTCs.

Does the scan tool display: C107C-BRAKE PEDAL SWITCH 1/2 STUCK?

Yes

- Go To 2

No

- The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
- Refer to the ABS-INTERMITTENT CONDITION TEST. ABS Intermittent Condition Test

2. CHECK THE TERMINALS/CONNECTORS/WIRING HARNESS FOR DAMAGE

Check all related wiring for bruised, chafed, pierced, or partially broken wires.

Check all related connectors for broken, bent, pushed out, or corroded terminals.

Were any problems found?

Yes

- Repair as necessary.
- Perform ABS VERIFICATION TEST. ABS Verification Test

No

- Go To 3

3. CHECK THE (B15) BRAKE SWITCH NO. 1 SIGNAL CIRCUIT WHILE DEPRESSING AND RELEASING BRAKE PEDAL






Turn the ignition off.

Disconnect the Anti-Lock Brake Module harness connector.

Turn the ignition on.

Using a 12-volt test light connected to 12-volts, check the (B15) Brake Switch No. 1 Signal circuit.

Depress and release the brake pedal.

Does the test light illumination toggle from on to off?

Yes

- Replace the Anti-Lock Brake Module.
- Perform ABS VERIFICATION TEST. ABS Verification Test

No

- Go To 4.

4. CHECK THE (B15) BRAKE SWITCH NO. 1 SIGNAL CIRCUIT FOR AN OPEN






Turn the ignition off.

Disconnect the Stop Lamp Switch harness connector.

Measure the resistance of the (B15) Brake Switch No. 1 Signal circuit.

Is the resistance below 5.0 ohms?

Yes

- Replace the Stop Lamp Switch.
- Perform ABS VERIFICATION TEST. ABS Verification Test

No

- Repair the (B15) Brake Switch No. 1 Signal circuit for an open.
- Perform ABS VERIFICATION TEST. ABS Verification Test