C1176
C1176 STOP LAMP SW2
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1. PRECONDITIONING
If "DTC CONFIRMATION PROCEDURE" has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
- GO TO 2.
2. CHECK DTC DETECTION
With CONSULT
1.Turn the ignition switch OFF, and wait 10 seconds or more.
2.Start the engine.
CAUTION:
Never start the vehicle.
3.Depress the brake pedal several times.
4.Perform self-diagnosis for "ABS".
Is DTC "C1176" detected?
YES- Proceed to .
NO- INSPECTION END
Diagnosis Procedure
NOTE:
DTC "C1176" may be detected when the brake pedal and the accelerator pedal are simultaneously depressed for 1 minute or more while driving the vehicle. This is not a malfunction.
1. INTERVIEW FROM THE CUSTOMER
Check if the brake pedal and the accelerator pedal are simultaneously depressed for 1 minute or more while driving the vehicle.
Is there such a history?
YES- GO TO 2.
NO- GO TO 3.
2. PERFORM SELF-DIAGNOSIS
With CONSULT
1.Erase self-diagnosis result for "ABS".
2.Turn the ignition switch OFF, and wait 10 seconds or more.
3.Start the engine.
CAUTION:
Never start the vehicle.
4.Depress the brake pedal several times.
5.Perform self-diagnosis for "ABS".
Is DTC "C1176" detected?
YES- GO TO 3.
NO- INSPECTION END
3. CHECK BRAKE PEDAL POSITION SWITCH CLEARANCE
1.Turn the ignition switch OFF.
2.Check the brake pedal position switch clearance. Adjustments.
Is the inspection result normal?
YES- GO TO 5.
NO- Adjust brake pedal position switch clearance. Adjustments. GO TO
4.
4. CHECK DATA MONITOR (1)
With CONSULT
1.Erase self-diagnosis result for "ABS".
2.Turn the ignition switch OFF, and wait 10 seconds or more.
3.Start the engine.
CAUTION:
Never start the vehicle.
4.Select "ABS", "DATA MONITOR" and "STOP LAMP SW-2" according to this order. Check that data monitor displays "On" or "Off" when brake pedal is depress or release. Pinout Values and Diagnostic Parameters.
Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 5.
5. CHECK BRAKE PEDAL POSITION SWITCH
Check the brake pedal position switch. C1116.
Is the inspection result normal?
YES- GO TO 7.
NO- Replace brake pedal position switch. Removal And Installation. GO TO 6.
6. CHECK DATA MONITOR (2)
With CONSULT
1.Erase self-diagnosis result for "ABS".
2.Turn the ignition switch OFF, and wait 10 seconds or more.
3.Start the engine.
CAUTION:
Never start the vehicle.
4.Select "ABS", "DATA MONITOR" and "STOP LAMP SW-2" according to this order. Check that data monitor displays "On" or "Off" when brake pedal is depress or release. Pinout Values and Diagnostic Parameters.
Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 7.
7. CHECK CONNECTOR AND TERMINAL
1.Turn the ignition switch OFF.
2.Disconnect ABS actuator and electric unit (control unit) harness connector.
3.Check the ABS actuator and electric unit (control unit) harness connector for disconnection or looseness.
4.Check the ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with harness connector.
5.Disconnect brake pedal position switch harness connector.
6.Check the brake pedal position switch harness connector for disconnection or looseness.
7.Check the brake pedal position switch pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES- GO TO 9.
NO- Repair or replace error-detected parts. GO TO 8.
8. CHECK DATA MONITOR (3)
With CONSULT
1.Connect ABS actuator and electric unit (control unit) harness connector.
2.Connect brake pedal position switch harness connector.
3.Erase self-diagnosis result for "ABS".
4.Turn the ignition switch OFF, and wait 10 seconds or more.
5.Start the engine.
CAUTION:
Never start the vehicle.
6.Select "ABS", "DATA MONITOR" and "STOP LAMP SW-2" according to this order. Check that data monitor displays "On" or "Off" when brake pedal is depress or release. Pinout Values and Diagnostic Parameters.
Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 11.
9. CHECK BRAKE PEDAL POSITION SWITCH CIRCUIT (1)
1.Turn the ignition switch OFF.
2.Disconnect ABS actuator and electric unit (control unit) harness connector.
3.Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.
4.Turn the ignition switch ON.
5.Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground.
Is the inspection result normal?
YES- Replace ABS actuator and electric unit (control unit). Removal And Installation.
NO- Repair or replace error-detected parts. GO TO 10.
10. CHECK BRAKE PEDAL POSITION SWITCH CIRCUIT (2)
1.Turn the ignition switch OFF.
2.Disconnect brake pedal position switch harness connector.
3.Check the continuity between ABS actuator and electric unit (control unit) harness connector and brake pedal position switch harness connector.
4.Check the continuity between ABS actuator and electric unit (control unit) harness connector and the ground.
Is the inspection result normal?
YES- Replace ABS actuator and electric unit (control unit). Removal And Installation.
NO- Repair or replace error-detected parts. GO TO 11.
11. CHECK DATA MONITOR (4)
With CONSULT
1.Connect ABS actuator and electric unit (control unit) harness connector.
2.Connect brake pedal position switch harness connector.
3.Erase self-diagnosis result for "ABS".
4.Turn the ignition switch OFF, and wait 10 seconds or more.
5.Start the engine.
CAUTION:
Never start the vehicle.
6.Select "ABS", "DATA MONITOR" and "STOP LAMP SW-2" according to this order. Check that data monitor displays "On" or "Off" when brake pedal is depress or release. Pinout Values and Diagnostic Parameters.
Is the inspection result normal?
YES- INSPECTION END
NO- Replace ABS actuator and electric unit (control unit). Removal And Installation.
Component Inspection
1. CHECK BRAKE PEDAL POSITION SWITCH
1.Turn ignition switch OFF.
2.Disconnect brake pedal position switch harness connector.
3.Check the continuity between brake pedal position switch connector terminals.
Is the inspection result normal?
YES- INSPECTION END
NO- Replace brake pedal position switch. Removal And Installation.