C107C

C1O7C-BRAKE PEDAL SWITCH 1/2 STUCK








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 C1O7C-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 DTC's

With the scan tool, read and record Freeze Fame information

With the scan tool, erase DTC's

Cycle the ignition switch from off to on

With the scan tool, read and record DTC's

Does the scan tool display: C1O7C-BRAKE PEDAL SWITCH 1/2 STUCK?

Yes

- Go To 2

No

- Refer to the INTERMITTENT CONDITION diagnostic procedure. Testing and Inspection
- Perform ABS VERIFICATION TEST - VER 1. ABS Verification 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 VER 1. 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 off to on?

Yes

- Go To 5

No

- Go To 4

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





Turn the ignition off.

Disconnect the Anti-Lock Brake Module harness connector.

Disconnect the Stop Lamp Switch harness connector.

Connect a jumper wire between the (B15) Brake Switch No.1 Signal circuit and ground.

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

Does the test light illuminate brightly?

Yes

- Replace the Stop Lamp Switch.
- Perform ABS VERIFICATION TEST VER 1. ABS Verification Test.

No

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

5. CHECK THE (B16) BRAKE SWITCH NO 2 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 ground check the (B16) Brake Switch No.2 Signal circuit.

Depress and release the brake pedal.

Does the test light illumination toggle from off to on?

Yes

- Replace the Stop Lamp Switch.
- Perform ABS VERIFICATION TEST - VER 1. ABS Verification Test.

No

- Go To 6

6. CHECK THE (B16) BRAKE SWITCH NO 2 SIGNAL CIRCUIT FOR AN OPEN





Turn the ignition off.

Disconnect the Anti-Lock Brake Module harness connector.

Disconnect the Stop Lamp Switch harness connector.

Connect a jumper wire between the (B16) Brake Switch No.2 Signal circuit and ground.

Using a 12-volt test light connected to 12-volts check the (B16) Brake Switch No.2 Signal circuit.

Does the test light illuminate brightly?

Yes

- Replace the Anti-lock Bake Module.
- Perform ABS VERIFICATION TEST - VER 1. ABS Verification Test.

No

- Repair the (B16) Brake Switch No.2 Signal circuit for an open.
- Perform ABS VERIFICATION TEST - VER 1. ABS Verification Test.