C107D
C107D-BRAKE PEDAL SWITCH 1/2 CORRELATION
For a complete wiring diagram, refer to the Wiring Information.
NOTE: The Electronic Stability Control (ESC) may also be referred to as Electronic Stability Program (ESP) depending on the vehicle model year and configuration. Certain components may also reference ESP, ESC, or use the traction control symbol.
- When Monitored:
When the vehicle is driven.
- Set Condition:
If the Powertrain Control Module (PCM) detects an implausible signal from the Stop Lamp Switch and sends a message to the ABS Module via the CAN C bus.
1. VERIFY DTC IS ACTIVE
NOTE: Diagnose and repair all Pressure Sensor and Voltage related DTCs and all Stop Lamp related DTCs and tests before diagnosing this DTC.
1. Ignition on, engine not running.
2. With the scan tool, read DTCs.
3. With the scan tool, read and record Environmental Data (EV Data).
4. With the scan tool, erase DTCs.
5. Cycle the ignition switch.
WARNING: Make sure brake capability is available before road testing.
6. Test drive the vehicle as follows: Drive for more than six minutes at a speed greater than 40 km/h (25 mph) and accelerate to a speed greater than 40 km/h (25 mph) and then decelerate to a speed lower than 3 km/h (2 mph) five consecutive times.
7. Park the vehicle.
8. With the scan tool, read DTCs.
Is the DTC active?
Yes
- Go To 2
No
- Perform the ABS INTERMITTENT CONDITION. ABS Intermittent Condition Test.
2. INSPECT RELATED WIRING HARNESS, TERMINALS, AND CONNECTORS
1. Turn ignition off to the lock position.
2. Visually inspect the related wiring harness. Look for any pinched, chafed, pierced, and partially broken wires.
3. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, and corroded terminals.
Were any problems found?
Yes
- Repair as necessary.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.
No
- Go To 3
3. CHECK (B15) BRAKE SIGNAL 1 CIRCUIT FUNCTION WHILE PRESSING AND RELEASING THE BRAKE PEDAL
1. Ignition on, engine not running.
2. Using a 12-volt test light connected to 12 volts, backprobe the (B15) Brake Switch No. 1 Signal circuit at the PCM C3 harness connector.
3. Press and release the brake pedal.
Does the test light illumination toggle from off to on?
Yes
- Go To 7
No
- Go To 4
4. CHECK (B15) BRAKE SIGNAL 1 CIRCUIT FOR A SHORT TO GROUND
1. Turn ignition off to the lock position.
2. Disconnect the PCM C3 harness connector.
3. Disconnect the Stop Lamp Switch harness connector.
4. Measure the resistance of the (B15) Brake Signal 1 circuit between ground and the PCM C3 harness connector.
Is the resistance below 5.0 Ohms?
Yes
- Repair the (B15) Brake Signal 1 circuit for a short to ground.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.
No
- Go To 5
5. CHECK (B15) BRAKE SIGNAL 1 CIRCUIT FOR AN OPEN
1. Measure the resistance of the (B15) Brake Signal 1 circuit between the ABS Module harness connector and the Stop Lamp Switch harness connector.
Is the resistance below 5.0 Ohms?
Yes
- Go To 6
No
- Repair the (B15) Brake Signal 1 circuit for an open.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.
6. CHECK (Z910) GROUND CIRCUIT FOR A OPEN
1. Measure the resistance on the (Z910) Ground circuit and ground in the Stop Lamp Switch harness connector.
Is the resistance below 5 Ohms?
Yes
- Replace the Stop Lamp Switch.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.
No
- Repair the open in the (Z910) Ground circuit.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.
7. CHECK BRAKE PEDAL ADJUSTMENT
1. Connect the Stop Lamp Switch harness connector.
2. Using a 12-volt test light connected to 12 volts, backprobe the (B15) Brake Switch No. 1 Signal circuit in the Stop Lamp Switch harness connector.
3. Ignition on, engine not running.
4. Press and release the brake pedal.
Does the test light illumination toggle from off to on within 4-5 mm of brake pedal travel?
Yes
- Replace the Anti-Lock Bakes System (ABS) Module.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.
No
- Replace the Stop Lamp Switch.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.