C1A67

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 to ON.

CAUTION:
Never set the vehicle to READY/Never start the engine.
2.Repeat step 1 two times or more.

CAUTION:
Be sure to wait for 5 seconds or more after turning the ignition switch OFF.
3.Turn the ignition switch OFF.
4.Close all doors including the trunk lid, and wait outside of vehicle for 5 minutes or more.
5.Turn the ignition switch ON.

CAUTION:
Never set the vehicle to READY/Never start the engine.
6.Erase self-diagnosis result of "BRAKE".

CAUTION:
Turn the ignition switch OFF and wait 5 minutes or more after erase self-diagnosis result.
7.Depress brake pedal by 100 mm (3.94 in) or more, and hold the position for 5 seconds or more.
8.Release brake pedal.
9.Repeat steps 7 to 8 three times.
10.Perform "BRAKE" self-diagnosis.
Is DTC "C1A67" detected?
YES- Proceed to .
NO- INSPECTION END

Diagnosis Procedure

1. CHECK STOP LAMP FOR ILLUMINATION (1)

Depress the brake pedal to a depth of 100 mm (3.94 in) or more and maintain the brake depression for 5 seconds or more to check that the stop lamp turns ON.
Is the inspection result normal?
YES- GO TO 2.
NO- Repair or replace error-detected parts and GO TO 4.

2. CHECK STOP LAMP SWITCH CIRCUIT (1)

1.Turn the ignition switch OFF.
2.Close all doors including the trunk lid, and wait outside of vehicle for 5 minutes or more.
3.Disconnect 12V battery cable to negative terminal. Removal and Installation.
4.Disconnect the electrically-driven intelligent brake unit harness connector.
5.Connect 12V battery cable to negative terminal. Removal and Installation.
6.Check voltage between the electrically-driven intelligent brake unit harness connector and ground.

7.Turn the ignition switch ON.

CAUTION:
Never set the vehicle to READY/Never start the engine.
8.Check voltage between the electrically-driven intelligent brake unit harness connector and ground.

Is the inspection result normal?
YES- GO TO 3.
NO- GO TO 4.

3. CHECK STOP LAMP SWITCH CIRCUIT (2)

1.Turn the ignition switch OFF.
2.Disconnect 12V battery cable to negative terminal. Removal and Installation.
3.Disconnect stop lamp switch harness connector.
4.Check continuity between electrically-driven intelligent brake unit and stop lamp switch harness connector.

5.Disconnect stop lamp OFF relay 1 harness connector.
6.Check continuity between stop lamp OFF relay 1 and stop lamp switch harness connector.

Is the inspection result normal?
YES- Perform diagnosis for stop lamp OFF relay system. C1A68.
NO- Repair or replace error-detected parts and GO TO 17.

4. CHECK 12V BATTERY

1.Turn the ignition switch OFF.
2.Check the 12V battery terminal connections. Removal and Installation.
3.Check the 12V battery. Testing and Inspection.
Is the inspection result normal?
YES- GO TO 5.
NO- Repair or replace error-detected parts and GO TO 5.

5. PERFORM SELF-DIAGNOSIS (1)

With CONSULT
1.Connect 12V battery cable to negative terminal. Removal and Installation.
2.Turn the ignition switch OFF to ON.

CAUTION:
Never set the vehicle to READY/Never start the engine.
3.Repeat step 2 two times or more.

CAUTION:
Be sure to wait for 5 seconds or more after turning the ignition switch OFF.
4.Turn the ignition switch OFF.
5.Close all doors including the trunk lid, and wait outside of vehicle for 5 minutes or more.
6.Turn the ignition switch ON.

CAUTION:
Never set the vehicle to READY/Never start the engine.
7.Erase self-diagnosis result of "BRAKE".

CAUTION:
Turn the ignition switch OFF and wait 5 minutes or more after erase self-diagnosis result.
8.Depress brake pedal by 100 mm (3.94 in) or more, and hold the position for 5 seconds or more.
9.Release brake pedal.
10.Repeat steps 8 to 9 three times.
11.Perform "BRAKE" self-diagnosis.
Is DTC "C1A67" detected?
YES- GO TO 6.
NO- INSPECTION END

6. CHECK CONNECTOR TERMINALS

1.Close all doors including the trunk lid, and wait outside of vehicle for 5 minutes or more.

CAUTION:
Never depress brake pedal.
2.Disconnect 12V battery cable from negative terminal. Removal and Installation.
3.Disconnect the electrically-driven intelligent brake unit harness connector, then check for failures of pin terminals and connections.
4.Disconnect the stop lamp switch harness connector, then check for failures of pin terminals and connections.
Is the inspection result normal?
YES- GO TO 8.
NO- Repair or replace error-detected parts and GO TO 7.

7. PERFORM SELF-DIAGNOSIS (2)

With CONSULT
1.Connect the electrically-driven intelligent brake unit harness connector.
2.Connect stop lamp switch harness connector.
3.Connect 12V battery cable to negative terminal. Removal and Installation.
4.Turn the ignition switch OFF to ON.

CAUTION:
Never set the vehicle to READY/Never start the engine.
5.Repeat step 4 two times or more.

CAUTION:
Be sure to wait for 5 seconds or more after turning the ignition switch OFF.
6.Turn the ignition switch OFF.
7.Close all doors including the trunk lid, and wait outside of vehicle for 5 minutes or more.
8.Turn the ignition switch ON.

CAUTION:
Never set the vehicle to READY/Never start the engine.
9.Erase self-diagnosis result of "BRAKE".

CAUTION:
Turn the ignition switch OFF and wait 5 minutes or more after erase self-diagnosis result.
10.Depress brake pedal by 100 mm (3.94 in) or more, and hold the position for 5 seconds or more.
11.Release brake pedal.
12.Repeat steps 10 to 11 three times.
13.Perform "BRAKE" self-diagnosis.
Is DTC "C1A67" detected?
YES- GO TO 8.
NO- INSPECTION END

8. CHECK IGNITION POWER SUPPLY

1.Connect the electrically-driven intelligent brake unit harness connector.
2.Connect 12V battery cable to negative terminal. Removal and Installation.
3.Turn the ignition switch OFF.
4.Close all doors including the trunk lid, and wait outside of vehicle for 5 minutes or more.

CAUTION:
Never depress brake pedal.
5.Disconnect 12V battery cable to negative terminal. Removal and Installation.
6.Disconnect the electrically-driven intelligent brake unit harness connector.
7.Connect 12V battery cable to negative terminal. Removal and Installation.
8.Check voltage between the electrically-driven intelligent brake unit harness connector and ground.

9.Turn the ignition switch ON.

CAUTION:
Never set the vehicle to READY/Never start the engine.
10.Check voltage between the electrically-driven intelligent brake unit harness connector and ground.

Is the inspection result normal?
YES- GO TO 11.
NO- GO TO 9.

9. CHECK IGNITION POWER SUPPLY CIRCUIT

1.Turn the ignition switch OFF.
2.Disconnect 12V battery cable to negative terminal. Removal and Installation.
3.Check 10A fuse (#46).
4.Disconnect IPDM E/R harness connector.
5.Check continuity between electrically-driven intelligent brake unit and IPDM E/R.

6.Check continuity between electrically-driven intelligent brake unit harness connector and ground.

Is the inspection result normal?
YES- Perform trouble diagnosis for ignition power supply. Ignition Power Supply.
NO- Repair or replace error-detected parts and GO TO 10.

10. PERFORM SELF-DIAGNOSIS (3)

With CONSULT
1.Connect the electrically-driven intelligent brake unit harness connector.
2.Connect IPDM E/R harness connector.
3.Connect stop lamp switch harness connector.
4.Connect 12V battery cable to negative terminal. Removal and Installation.
5.Turn the ignition switch OFF to ON.

CAUTION:
Never set the vehicle to READY/Never start the engine.
6.Repeat step 5 two times or more.

CAUTION:
Be sure to wait for 5 seconds or more after turning the ignition switch OFF.
7.Turn the ignition switch OFF.
8.Close all doors including the trunk lid, and wait outside of vehicle for 5 minutes or more.
9.Turn the ignition switch ON.

CAUTION:
Never set the vehicle to READY/Never start the engine.
10.Erase self-diagnosis result of "BRAKE".

CAUTION:
Turn the ignition switch OFF and wait 5 minutes or more after erase self-diagnosis result.
11.Depress brake pedal by 100 mm (3.94 in) or more, and hold the position for 5 seconds or more.
12.Release brake pedal.
13.Repeat steps 11 to 12 three times.
14.Perform "BRAKE" self-diagnosis.
Is DTC "C1A67" detected?
YES- GO TO 11.
NO- INSPECTION END

11. CHECK 12V BATTERY POWER SUPPLY

1.Turn the ignition switch OFF.
2.Disconnect 12V battery cable to negative terminal. Removal and Installation.
3.Disconnect the electrically-driven intelligent brake unit harness connector.
4.Connect 12V battery cable to negative terminal. Removal and Installation.
5.Check voltage between the electrically-driven intelligent brake unit harness connector terminal.

6.Turn the ignition switch ON.

CAUTION:
Never set the vehicle to READY/Never start the engine.
7.Check voltage between the electrically-driven intelligent brake unit harness connector terminal

Is the inspection result normal?
YES- GO TO 14.
NO- GO TO 12.

12. CHECK 12V BATTERY POWER SUPPLY CIRCUIT

1.Turn the ignition switch OFF.
2.Disconnect 12V battery cable to negative terminal. Removal and Installation.
3.Check 50A fusible link (#D).
4.Check continuity and for short circuit between electrically-driven intelligent brake unit harness connector terminal (1) and 50A fusible link (#D).
5.Check continuity and for short circuit between electrically-driven intelligent brake unit harness connector terminal (2) and 50A fusible link (#D).
6.Check 10A fuse (#65).
7.Check continuity and for short circuit between electrically-driven intelligent brake unit harness connector terminal (11) and 10A fuse (#65).
Is the inspection result normal?
YES- Perform diagnosis for 12V battery power supply. Battery Power Supply.
NO- Repair or replace error-detected parts and GO TO 13.

13. PERFORM SELF-DIAGNOSIS (4)

With CONSULT
1.Connect the electrically-driven intelligent brake unit harness connector.
2.Connect 12V battery cable to negative terminal. Removal and Installation.
3.Turn the ignition switch OFF to ON.

CAUTION:
Never set the vehicle to READY/Never start the engine.
4.Repeat step 3 two times or more.

CAUTION:
Be sure to wait for 5 seconds or more after turning the ignition switch OFF.
5.Turn the ignition switch OFF.
6.Close all doors including the trunk lid, and wait outside of vehicle for 5 minutes or more.
7.Turn the ignition switch ON.

CAUTION:
Never set the vehicle to READY/Never start the engine.
8.Erase self-diagnosis result of "BRAKE".

CAUTION:
Turn the ignition switch OFF and wait 5 minutes or more after erase self-diagnosis result.
9.Depress brake pedal by 100 mm (3.94 in) or more, and hold the position for 5 seconds or more.
10.Release brake pedal.
11.Repeat steps 9 to 10 three times.
12.Perform "BRAKE" self-diagnosis.
Is DTC "C1A67" detected?
YES- GO TO 14.
NO- INSPECTION END

14. CHECK GROUND CIRCUIT

1.Disconnect 12V battery cable to negative terminal. Removal and Installation.
2.Disconnect the electrically-driven intelligent brake unit harness connector.
3.Check continuity between electrically-driven intelligent brake unit and ground.

Is the inspection result normal?
YES- GO TO 16.
NO- Repair or replace error-detected parts and GO TO 15.

15. PERFORM SELF-DIAGNOSIS (5)

With CONSULT
1.Connect the electrically-driven intelligent brake unit harness connector.
2.Connect 12V battery cable to negative terminal. Removal and Installation.
3.Turn the ignition switch OFF to ON.

CAUTION:
Never set the vehicle to READY/Never start the engine.
4.Repeat step 3 two times or more.

CAUTION:
Be sure to wait for 5 seconds or more after turning the ignition switch OFF.
5.Turn the ignition switch OFF.
6.Close all doors including the trunk lid, and wait outside of vehicle for 5 minutes or more.
7.Turn the ignition switch ON.

CAUTION:
Never set the vehicle to READY/Never start the engine.
8.Erase self-diagnosis result of "BRAKE".

CAUTION:
Turn the ignition switch OFF and wait 5 minutes or more after erase self-diagnosis result.
9.Depress brake pedal by 100 mm (3.94 in) or more, and hold the position for 5 seconds or more.
10.Release brake pedal.
11.Repeat steps 9 to 10 three times.
12.Perform "BRAKE" self-diagnosis.
Is DTC "C1A67" detected?
YES- GO TO 16.
NO- INSPECTION END

16. CHECK DATA MONITOR

With CONSULT
1.Connect the electrically-driven intelligent brake unit harness connector.
2.Connect 12V battery cable to negative terminal. Removal and Installation.
3.Turn the ignition switch OFF to ON.

CAUTION:
Never set the vehicle to READY/Never start the engine.
4.Repeat step 3 two times or more.

CAUTION:
Be sure to wait for 5 seconds or more after turning the ignition switch OFF.
5.Select "BRAKE" and "DATA MONITOR" according this order.
6.Check "MOTOR POWER SUPPLY" and "CONTROL MODULE POWER". Pinout Values and Diagnostic Parameters.
Is the inspection result normal?
YES- GO TO 17.
NO- Replace the electrically-driven intelligent brake unit. Removal and Installation.

17. PERFORM SELF-DIAGNOSIS (6)

With CONSULT
1.Turn the ignition switch OFF to ON.

CAUTION:
Never set the vehicle to READY/Never start the engine.
2.Repeat step 1 two times or more.

CAUTION:
Be sure to wait for 5 seconds or more after turning the ignition switch OFF.
3.Turn the ignition switch OFF.
4.Close all doors including the trunk lid, and wait outside of vehicle for 5 minutes or more.
5.Turn the ignition switch ON.

CAUTION:
Never set the vehicle to READY/Never start the engine.
6.Erase self-diagnosis result of "BRAKE".

CAUTION:
Turn the ignition switch OFF and wait 5 minutes or more after erase self-diagnosis result.
7.Depress brake pedal by 100 mm (3.94 in) or more, and hold the position for 5 seconds or more.
8.Release brake pedal.
9.Repeat steps 7 to 8 three times.
10.Perform "BRAKE" self-diagnosis.
Is DTC "C1A67" detected?
YES- GO TO 18.
NO- INSPECTION END

18. VISUALLY CHECK STOP LAMP SWITCH

Check the stop lamp switch for damage.
Is the inspection result normal?
YES- GO TO 19.
NO- Repair or replace error-detected parts and GO TO 28.

19. CHECK STOP LAMP SWITCH INSTALLATION

Check stop lamp switch for looseness and disconnection.
Is the inspection result normal?
YES- GO TO 20.
NO- Correct stop lamp switch installation or replace stop lamp switch. GO TO 28.

20. CHECK BRAKE PEDAL HEIGHT

Check each brake pedal height. Adjustments.
Is the inspection result normal?
YES- GO TO 21.
NO- Adjust each brake pedal height. Adjustments. GO TO 28.

21. STROKE SENOR 0 POINT LEARNING

Perform stroke sensor 0 point learning. Work Procedure.
- GO TO 22.

22. CHECK STOP LAMP FOR ILLUMINATION (2)

Depress the brake pedal to a depth of 100 mm (3.94 in) or more and maintain the brake depression for 5 seconds or more to check that the stop lamp turns ON.
Is the inspection result normal?
YES- GO TO 28.
NO- GO TO 23.

23. CHECK STOP LAMP SWITCH CLEARANCE

1.Turn the ignition switch OFF.
2.Check stop lamp clearance. Adjustments.
Is the inspection result normal?
YES- GO TO 24.
NO- Adjust stop lamp switch clearance. Adjustments. GO TO 28.

24. CHECK STOP LAMP SWITCH CIRCUIT (3)

1.Turn the ignition switch OFF.
2.Close all doors including the trunk lid, and wait outside of vehicle for 5 minutes or more.
3.Disconnect 12V battery cable to negative terminal. Removal and Installation.
4.Disconnect the electrically-driven intelligent brake unit harness connector.
5.Connect 12V battery cable to negative terminal. Removal and Installation.
6.Check voltage between the electrically-driven intelligent brake unit harness connector and ground.

Is the inspection result normal?
YES- GO TO 26.
NO- GO TO 25.

25. CHECK STOP LAMP SWITCH CIRCUIT (4)

1.Turn the ignition switch OFF.
2.Disconnect 12V battery cable to negative terminal. Removal and Installation.
3.Disconnect stop lamp switch harness connector.
4.Check continuity between electrically-driven intelligent brake unit and stop lamp switch harness connector.

5.Disconnect stop lamp OFF relay 1 harness connector.
6.Check continuity between stop lamp OFF relay 1 and stop lamp switch harness connector.

Is the inspection result normal?
YES- Perform diagnosis for stop lamp OFF relay system. C1A68.
NO- Repair or replace error-detected parts and GO TO 28.

26. CHECK STOP LAMP SWITCH

Check the stop lamp switch..
Is the inspection result normal?
YES- GO TO 27.
NO- Replace the stop lamp switch. Removal and Installation. GO TO 28.

27. CHECK STOP LAMP FOR ILLUMINATION (3)

Depress the brake pedal to a depth of 100 mm (3.94 in) or more and maintain the brake depression for 5 seconds or more to check that the stop lamp turns ON.
Is the inspection result normal?
YES- GO TO 28.
NO- Repair or replace error-detected parts and GO TO 28.

28. PERFORM SELF-DIAGNOSIS (3)

With CONSULT
1.Connect 12V battery cable to negative terminal. Removal and Installation.
2.Turn the ignition switch OFF to ON.

CAUTION:
Never set the vehicle to READY/Never start the engine.
3.Repeat step 2 two times or more.

CAUTION:
Be sure to wait for 5 seconds or more after turning the ignition switch OFF.
4.Turn the ignition switch OFF.
5.Close all doors including the trunk lid, and wait outside of vehicle for 5 minutes or more.
6.Turn the ignition switch ON.

CAUTION:
Never set the vehicle to READY/Never start the engine.
7.Erase self-diagnosis result of "BRAKE".

CAUTION:
Turn the ignition switch OFF and wait 5 minutes or more after erase self-diagnosis result.
8.Depress brake pedal by 100 mm (3.94 in) or more, and hold the position for 5 seconds or more.
9.Release brake pedal.
10.Repeat steps 8 to 9 three times.
11.Perform "BRAKE" self-diagnosis.
Is any DTC "C1A67" or "C1A68" detected?
YES("C1A67")-GO TO 24.
YES("C1A68")-Proceed to C1A68.
NO- INSPECTION END

Component Inspection

1. CHECK STOP LAMP SWITCH

1.Turn the ignition switch OFF.
2.Close all doors including the trunk lid, and wait outside of vehicle for 5 minutes or more.
3.Disconnect stop lamp switch harness connector.
4.Check continuity when stop lamp switch is operated.

Is the inspection result normal?
YES- INSPECTION END
NO- Replace the stop lamp switch. Removal and Installation.