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.Set the vehicle to READY/Start the engine.
CAUTION:
Stop the vehicle.
3.Depress the brake pedal several time.
4.Turn the ignition switch OFF -> ON.
CAUTION:
- Be sure to wait of 10 seconds after turning ignition switch OFF or ON.
- Set the vehicle to READY/Start the engine.
5.Repeat step 4 two or more times.
6.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. CHECK CONNECTOR
1.Turn the ignition switch OFF.
2.Check ABS actuator and electric unit (control unit) harness connector for disconnection or looseness.
Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace error-detected parts. GO TO 3.
3. PERFORM SELF-DIAGNOSIS (1)
With CONSULT
1.Erase Self-diagnosis result for "ABS".
2.Turn the ignition switch OFF -> ON -> OFF.
CAUTION:
Be sure to wait of 10 seconds after turning ignition switch OFF or ON.
3.Set the vehicle to READY/Start the engine.
CAUTION:
Stop the vehicle.
4.Depress the brake pedal several times.
5.Turn the ignition switch OFF -> ON.
CAUTION:
- Be sure to wait of 10 seconds after turning ignition switch OFF or ON.
- Set the vehicle to READY/Start the engine.
6.Repeat step 5 two or more times.
7.Perform self-diagnosis for "ABS".
Is DTC "C1176" detected?
YES- GO TO 4.
NO- INSPECTION END
4. PERFORM SELF-DIAGNOSIS (ELECTRICALLY-DRIVEN INTELLIGENT BRAKE)
With CONSULT
Perform self-diagnosis for "BRAKE". Scan Tool Testing and Procedures.
Is DTC "C1A68" detected?
YES- Proceed to C1A68.
NO- GO TO 5.
5. CHECK BRAKE SWITCH CLEARANCE
1.Turn the ignition switch OFF.
2.Check brake switch clearance. Adjustments.
Is the inspection result normal?
YES- GO TO 7.
NO- Adjust brake switch clearance. Adjustments. GO TO 6.
6. CHECK DATA MONITOR (1)
With CONSULT
1.Erase Self-diagnosis result for "ABS".
2.Turn the ignition switch OFF -> ON -> OFF.
CAUTION:
Be sure to wait of 10 seconds after turning ignition switch OFF or ON.
3.Set the vehicle to READY/Start the engine.
CAUTION:
Stop the vehicle.
4.Select "ABS", "DATA MONITOR" and "STOP LAMP SW2" according to this order. Check that data monitor displays "On" or "Off" when brake pedal is depress or release. Pinout Values and Diagnostic Parameters.
5.Select "ABS", "DATA MONITOR" and "PRESSURE SENSOR" according to this order. Check that data monitor displays "5 bar" or less when brake pedal is depress. Pinout Values and Diagnostic Parameters.
Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 7.
7. CHECK BRAKE SWITCH
Check brake switch. C1116.
Is the inspection result normal?
YES- GO TO 9.
NO- Replace brake switch. Removal and Installation. GO TO 8.
8. 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.Set the vehicle to READY/Start the engine.
CAUTION:
Stop the vehicle.
4.Select "ABS", "DATA MONITOR" and "STOP LAMP SW2" according to this order. Check that data monitor displays "On" or "Off" when brake pedal is depress or release. Pinout Values and Diagnostic Parameters.
5.Select "ABS", "DATA MONITOR" and "PRESSURE SENSOR" according to this order. Check that data monitor displays "5 bar" or less when brake pedal is depress. Pinout Values and Diagnostic Parameters.
Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 9.
9. CHECK CONNECTOR AND TERMINAL
1.Turn the ignition switch OFF.
2.Disconnect ABS actuator and electric unit (control unit) harness connector.
3.Check ABS actuator and electric unit (control unit) harness connector for disconnection or looseness.
4.Check ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with harness connector.
5.Disconnect brake switch harness connector.
6.Check brake switch harness connector for disconnection or looseness.
7.Check brake switch pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES- GO TO 11.
NO- Repair or replace error-detected parts. GO TO 10.
10. CHECK DATA MONITOR (3)
With CONSULT
1.Connect ABS actuator and electric unit (control unit) harness connector.
2.Connect brake switch harness connector.
3.Erase Self-diagnosis result for "ABS".
4.Turn the ignition switch OFF -> ON -> OFF.
CAUTION:
Be sure to wait of 10 seconds after turning ignition switch OFF or ON.
5.Turn the ignition switch ON.
CAUTION:
Never set the vehicle to READY/Never start the engine.
6.Select "ABS", "DATA MONITOR" and "STOP LAMP SW2" according to this order. Check that data monitor displays "On" or "Off" when brake pedal is depress or release. Pinout Values and Diagnostic Parameters.
7.Select "ABS", "DATA MONITOR" and "PRESSURE SENSOR" according to this order. Check that data monitor displays "5 bar" or less when brake pedal is depress. Pinout Values and Diagnostic Parameters.
Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 11.
11. CHECK BRAKE SWITCH CIRCUIT (1)
1.Turn the ignition switch OFF.
2.Disconnect ABS actuator and electric unit (control unit) harness connector.
3.Check voltage between ABS actuator and electric unit (control unit) harness connector and ground.
4.Turn the ignition switch ON.
CAUTION:
Never set the vehicle to READY/Never start the engine.
5.Check 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 12.
12. CHECK BRAKE SWITCH CIRCUIT (2)
1.Turn the ignition switch OFF.
2.Disconnect brake switch harness connector.
3.Check continuity between ABS actuator and electric unit (control unit) harness connector and brake switch harness connector.
*1: Models without ICC
*2: Models with ICC
4.Check continuity between ABS actuator and electric unit (control unit) harness connector and stop lamp
OFF relay 2 harness connector.
5.Check 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 13.
13. CHECK DATA MONITOR (4)
With CONSULT
1.Connect ABS actuator and electric unit (control unit) harness connector.
2.Connect brake switch/brake pedal position switch harness connector.
3.Erase Self-diagnosis result for "ABS".
4.Turn the ignition switch OFF -> ON -> OFF.
CAUTION:
Be sure to wait of 10 seconds after turning ignition switch OFF or ON.
5.Set the vehicle to READY/Start the engine.
CAUTION:
Stop the vehicle.
6.Select "ABS", "DATA MONITOR" and "STOP LAMP SW2" according to this order. Check that data monitor displays "On" or "Off" when brake pedal is depress or release. Pinout Values and Diagnostic Parameters.
7.Select "ABS", "DATA MONITOR" and "PRESSURE SENSOR" according to this order. Check that data monitor displays "5 bar" or less when brake pedal is depress. 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 SWITCH
1.Turn the ignition switch OFF.
2.Disconnect brake switch harness connector.
3.Check continuity between brake switch harness connector terminals.
Is the inspection result normal?
YES- INSPECTION END
NO- Replace brake switch. Removal and Installation.