C1A6B
DTC Logic
DTC DETECTION LOGIC
DTC REPRODUCTION PROCEDURE
1. PRECONDITIONING
If "DTC CONFIRMATION PROCEDURE" has been previously conducted, always turn power 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 power switch OFF to ON.
CAUTION:
Never engage READY state.
2.Repeat step 1 two or more times.
CAUTION:
Be sure to wait for 5 seconds or more after turning the power switch OFF.
3.Turn the power switch OFF.
4.Get out of the vehicle, close all doors (including back door), and wait for 3 minutes or more.
5.Turn the power switch ON.
CAUTION:
Never engage READY state.
6.Erase self-diagnosis result of "BRAKE".
CAUTION:
After erasing self-diagnosis results, turn the power switch OFF, get out of the vehicle, close all doors (including back door), and wait for 3 minutes or more.
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 "C1A6B" detected?
YES- Proceed to "Diagnosis Procedure" .
NO- INSPECTION END
Diagnosis Procedure
1. CHECK 12V BATTERY
1.Turn the power switch OFF.
2.Get out of the vehicle and close all doors (including back door).
3.Check the 12V battery terminal connections. Refer to "Precaution for Removing 12V Battery" Precaution For Removing 12V Battery and
"Work Flow" Testing and Inspection.
4.Check the 12V battery. Refer to "Work Flow" Testing and Inspection.
Is the inspection result normal?
YES- GO TO 2.
NO- Repair or replace error-detected parts and GO TO 2.
2. PERFORM SELF-DIAGNOSIS (1)
With CONSULT
1.Connect 12V battery cable to negative terminal.
2.Turn the power switch OFF to ON.
CAUTION:
Never engage READY state.
3.Repeat step 2 two or more times.
CAUTION:
Be sure to wait for 5 seconds or more after turning the power switch OFF.
4.Turn the power switch OFF.
5.Get out of the vehicle, close all doors (including back door), and wait for 3 minutes or more.
6.Turn the power switch ON.
CAUTION:
Never engage READY state.
7.Erase self-diagnosis result of "BRAKE".
CAUTION:
After erasing self-diagnosis results, turn the power switch OFF, get out of the vehicle, close all doors (including back door), and wait for 3 minutes or more.
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 "C1A6B" detected?
YES- GO TO 3.
NO- INSPECTION END
3. CHECK CONNECTOR TERMINALS
1.Turn the power switch OFF.
2.Get out of the vehicle and close all doors (including back door).
3.Disconnect 12V battery cable from negative terminal. Refer to "Precaution for Removing 12V Battery" Precaution For Removing 12V Battery.
4.Disconnect the electrically-driven intelligent brake unit harness connector, then check for failures of pin terminals and connections.
5.Disconnect the brake power supply backup unit harness connector, then check for failures of pin terminals and connections.
Is the inspection result normal?
YES- GO TO 5.
NO- Repair or replace error-detected parts and GO TO 4.
4. PERFORM SELF-DIAGNOSIS (2)
With CONSULT
1.Connect the electrically-driven intelligent brake unit harness connector.
2.Connect the brake power supply backup unit harness connector.
3.Connect 12V battery cable to negative terminal.
4.Turn the power switch OFF to ON.
CAUTION:
Never engage READY state.
5.Repeat step 4 two or more times.
CAUTION:
Be sure to wait for 5 seconds or more after turning the power switch OFF.
6.Turn the power switch OFF.
7.Get out of the vehicle, close all doors (including back door), and wait for 3 minutes or more.
8.Turn the power switch ON.
CAUTION:
Never engage READY state.
9.Erase self-diagnosis result of "BRAKE".
CAUTION:
After erasing self-diagnosis results, turn the power switch OFF, get out of the vehicle, close all doors (including back door), and wait for 3 minutes or more.
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 "C1A6B" detected?
YES- GO TO 5.
NO- INSPECTION END
5. CHECK POWER SWITCH ON POWER SUPPLY
1.Connect the brake power supply backup unit harness connector.
2.Turn the power switch OFF.
3.Get out of the vehicle and close all doors (including back door).
4.Disconnect 12V battery cable from negative terminal. Refer to "Precaution for Removing 12V Battery" Precaution For Removing 12V Battery.
5.Disconnect the electrically-driven intelligent brake unit harness connector.
6.Connect 12V battery cable to negative terminal.
7.Check the voltage between the electrically-driven intelligent brake unit harness connector and ground.
8.Turn the power switch ON.
CAUTION:
Never engage READY state.
9.Check the voltage between the electrically-driven intelligent brake unit harness connector and ground.
Is the inspection result normal?
YES- GO TO 8.
NO- GO TO 6.
6. CHECK POWER SWITCH ON POWER SUPPLY CIRCUIT
1.Turn the power switch OFF.
2.Get out of the vehicle and close all doors (including back door).
3.Disconnect 12V battery cable from negative terminal. Refer to "Precaution for Removing 12V Battery" Precaution For Removing 12V Battery.
4.Check the 15A fuse (#62).
5.Disconnect IPDM E/R harness connector.
6.Check the continuity between electrically-driven intelligent brake unit and IPDM E/R.
7.Check the continuity between electrically-driven intelligent brake unit harness connector and ground.
Is the inspection result normal?
YES- Perform trouble diagnosis for power ON power supply. Refer to "Wiring Diagram ON POWER SUPPLY -" On Power Supply.
NO- Repair or replace error-detected parts and GO TO 7.
7. 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 12V battery cable to negative terminal.
4.Turn the power switch OFF to ON.
CAUTION:
Never engage READY state.
5.Repeat step 4 two or more times.
CAUTION:
Be sure to wait for 5 seconds or more after turning the power switch OFF.
6.Turn the power switch OFF.
7.Get out of the vehicle, close all doors (including back door), and wait for 3 minutes or more.
8.Turn the power switch ON.
CAUTION:
Never engage READY state.
9.Erase self-diagnosis result of "BRAKE".
CAUTION:
After erasing self-diagnosis results, turn the power switch OFF, get out of the vehicle, close all doors (including back door), and wait for 3 minutes or more.
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 "C1A6B" detected?
YES- GO TO 8.
NO- INSPECTION END
8. CHECK 12V BATTERY POWER SUPPLY
1.Turn the power switch OFF.
2.Get out of the vehicle and close all doors (including back door).
3.Disconnect 12V battery cable from negative terminal. Refer to "Precaution for Removing 12V Battery" Precaution For Removing 12V Battery.
4.Disconnect the electrically-driven intelligent brake unit harness connector.
5.Connect 12V battery cable to negative terminal.
6.Check the voltage between the electrically-driven intelligent brake unit harness connector terminals.
7.Turn the power switch ON.
CAUTION:
Never engage READY state.
8.Check the voltage between the electrically-driven intelligent brake unit harness connector terminals.
Is the inspection result normal?
YES- GO TO 11.
NO- GO TO 9.
9. CHECK 12V BATTERY POWER SUPPLY CIRCUIT
1.Turn the power switch OFF.
2.Get out of the vehicle and close all doors (including back door).
3.Disconnect 12V battery cable from negative terminal. Refer to "Precaution for Removing 12V Battery" Precaution For Removing 12V Battery.
4.Check the 60A fusible link (#F).
5.Check the continuity and for short circuit between harness connector terminal 1 of electrically-driven intelligent brake unit and 60A fusible link (#F).
6.Check the continuity and for short circuit between harness connector terminal 2 of electrically-driven intelligent brake unit and 60A fusible link (#F).
7.Check the 10A fuse (#78).
8.Check the continuity and for short circuit between harness connector terminal 11 of electrically-driven intelligent brake unit and 10A fuse (#78).
Is the inspection result normal?
YES- Perform trouble diagnosis for 12V battery power supply. Refer to "Wiring Diagram BATTERY POWER SUPPLY -" Battery Power Supply.
NO- Repair or replace error-detected parts and GO TO 10.
10. PERFORM SELF-DIAGNOSIS (4)
With CONSULT
1.Connect the electrically-driven intelligent brake unit harness connector.
2.Connect 12V battery cable to negative terminal.
3.Turn the power switch OFF to ON.
CAUTION:
Never engage READY state.
4.Repeat step 3 two or more times.
CAUTION:
Be sure to wait for 5 seconds or more after turning the power switch OFF.
5.Turn the power switch OFF.
6.Get out of the vehicle, close all doors (including back door), and wait for 3 minutes or more.
7.Turn the power switch ON.
CAUTION:
Never engage READY state.
8.Erase self-diagnosis result of "BRAKE".
CAUTION:
After erasing self-diagnosis results, turn the power switch OFF, get out of the vehicle, close all doors (including back door), and wait for 3 minutes or more.
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 "C1A6B" detected?
YES- GO TO 11.
NO- INSPECTION END
11. CHECK GROUND CIRCUIT
1.Turn the power switch OFF.
2.Get out of the vehicle and close all doors (including back door).
3.Disconnect 12V battery cable from negative terminal. Refer to "Precaution for Removing 12V Battery" Precaution For Removing 12V Battery.
4.Disconnect the electrically-driven intelligent brake unit harness connector.
5.Check the continuity between electrically-driven intelligent brake unit and ground.
Is the inspection result normal?
YES- GO TO 13.
NO- Repair or replace error-detected parts and GO TO 12.
12. PERFORM SELF-DIAGNOSIS (5)
With CONSULT
1.Connect the electrically-driven intelligent brake unit harness connector.
2.Connect 12V battery cable to negative terminal.
3.Turn the power switch OFF to ON.
CAUTION:
Never engage READY state.
4.Repeat step 3 two or more times.
CAUTION:
Be sure to wait for 5 seconds or more after turning the power switch OFF.
5.Turn the power switch OFF.
6.Get out of the vehicle, close all doors (including back door), and wait for 3 minutes or more.
7.Turn the power switch ON.
CAUTION:
Never engage READY state.
8.Erase self-diagnosis result of "BRAKE".
CAUTION:
After erasing self-diagnosis results, turn the power switch OFF, get out of the vehicle, close all doors (including back door), and wait for 3 minutes or more.
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 "C1A6B" detected?
YES- GO TO 13.
NO- INSPECTION END
13. CHECK DATA MONITOR (1)
With CONSULT
1.Connect the electrically-driven intelligent brake unit harness connector.
2.Connect 12V battery cable to negative terminal.
3.Turn the power switch OFF to ON.
CAUTION:
Never engage READY state.
4.Repeat step 3 two or more times.
CAUTION:
Be sure to wait for 5 seconds or more after turning the power switch OFF.
5.Select "BRAKE", "DATE MONITOR" according this order.
6.Check the "MOTOR POWER SUPPLY" and "CONTROL MODULE POWER". Refer to "Reference Value" Pinout Values and Diagnostic Parameters.
Is the inspection result normal?
YES- GO TO 14.
NO- Replace the electrically-driven intelligent brake unit. Refer to "Removal and installation" Removal And Installation.
14. PERFORM SELF-DIAGNOSIS (2)
With CONSULT
1.Turn the power switch OFF to ON.
CAUTION:
Never engage READY state.
2.Repeat step 1 two or more times.
CAUTION:
Be sure to wait for 5 seconds or more after turning the power switch OFF.
3.Turn the power switch OFF.
4.Get out of the vehicle, close all doors (including back door), and wait for 3 minutes or more.
5.Turn the power switch ON.
CAUTION:
Never engage READY state.
6.Erase self-diagnosis result of "BRAKE".
CAUTION:
After erasing self-diagnosis results, turn the power switch OFF, get out of the vehicle, close all doors (including back door), and wait for 3 minutes or more.
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 "C1A6B" detected?
YES- GO TO 15.
NO- INSPECTION END
15. CHECK BRAKE POWER SUPPLY BACKUP UNIT CIRCUIT
1.Turn the power switch OFF.
2.Get out of the vehicle and close all doors (including back door).
3.Disconnect 12V battery cable from negative terminal. Refer to "Precaution for Removing 12V Battery" Precaution For Removing 12V Battery.
4.Disconnect the electrically-driven intelligent brake unit harness connector.
5.Disconnect the brake power supply backup unit harness connector.
6.Check the continuity between electrically-driven intelligent brake unit and brake power supply backup unit.
7.Check the 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 16.
16. CHECK DATA MONITOR (2)
With CONSULT
1.Connect the electrically-driven intelligent brake unit harness connector.
2.Connect the brake power supply backup unit harness connector.
3.Connect 12V battery cable to negative terminal.
4.Turn the power switch OFF to ON.
CAUTION:
Never engage READY state.
5.Repeat step 4 two or more times.
CAUTION:
Be sure to wait for 5 seconds or more after turning the power switch OFF.
6.Select "BRAKE" and "DATA MONITOR" according this order.
7.Check the "BACKUP UNIT DIAG RESULT". Refer to "Reference Value" Pinout Values and Diagnostic Parameters.
What was the displayed data monitor result?
"NORMAL"-INSPECTION END
"ERR1"- GO TO 17.
"ERR2"- GO TO 18.
"ERR3"- Replace the brake power supply backup unit. Refer to "Removal and Installation" Removal And Installation.
"ERR4"- Replace the brake power supply backup unit. Refer to "Removal and Installation" Removal And Installation.
"ERR5"- Replace the brake power supply backup unit. Refer to "Removal and Installation" Removal And Installation.
"ERR6"- Replace the brake power supply backup unit. Refer to "Removal and Installation" Removal And Installation.
"ERR7"- GO TO 19.
"ERR8"- GO TO 17.
"ERR9"- Replace the brake power supply backup unit. Refer to "Removal and Installation" Removal And Installation.
"ERR10"-Replace the brake power supply backup unit. Refer to "Removal and Installation" Removal And Installation.
"ERR11"-Replace the brake power supply backup unit. Refer to "Removal and Installation" Removal And Installation.
"ERR12"-GO TO 17.
"ERR13"-Replace the brake power supply backup unit. Refer to "Removal and Installation" Removal And Installation.
"ERR14"-Replace the brake power supply backup unit. Refer to "Removal and Installation" Removal And Installation.
"ERR15"-GO TO 20.
17. CHECK CIRCUIT BETWEEN ELECTRICALLY-DRIVEN INTELLIGENT BRAKE UNIT AND BRAKE
POWER SUPPLY BACKUP UNIT (1)
1.Turn the power switch OFF.
2.Get out of the vehicle and close all doors (including back door).
3.Disconnect 12V battery cable from negative terminal. Refer to "Precaution for Removing 12V Battery" Precaution For Removing 12V Battery.
4.Disconnect the electrically-driven intelligent brake unit harness connector.
5.Disconnect the brake power supply backup unit harness connector.
6.Check the continuity between electrically-driven intelligent brake unit and ground.
Is the inspection result normal?
YES- Replace the brake power supply backup unit. Refer to "Removal and Installation" Removal And Installation.
NO- Repair or replace error-detected parts.
18. CHECK CIRCUIT BETWEEN ELECTRICALLY-DRIVEN INTELLIGENT BRAKE UNIT AND BRAKE
POWER SUPPLY BACKUP UNIT (2)
1.Turn the power switch OFF.
2.Get out of the vehicle and close all doors (including back door).
3.Disconnect 12V battery cable from negative terminal. Refer to "Precaution for Removing 12V Battery" Precaution For Removing 12V Battery.
4.Disconnect the electrically-driven intelligent brake unit harness connector.
5.Disconnect the brake power supply backup unit harness connector.
6.Check the continuity between electrically-driven intelligent brake unit and brake power supply backup unit.
7.Check the continuity between electrically-driven intelligent brake unit and ground.
Is the inspection result normal?
YES- Replace the brake power supply backup unit. Refer to "Removal and Installation" Removal And Installation.
NO- Repair or replace error-detected parts.
19. CHECK CIRCUIT BETWEEN ELECTRICALLY-DRIVEN INTELLIGENT BRAKE UNIT AND BRAKE
POWER SUPPLY BACKUP UNIT (3)
1.Turn the power switch OFF.
2.Get out of the vehicle and close all doors (including back door).
3.Disconnect 12V battery cable from negative terminal. Refer to "Precaution for Removing 12V Battery" Precaution For Removing 12V Battery.
4.Disconnect the electrically-driven intelligent brake unit harness connector.
5.Disconnect the brake power supply backup unit harness connector.
6.Check the continuity between electrically-driven intelligent brake unit and brake power supply backup unit.
7.Check the continuity between electrically-driven intelligent brake unit and ground.
Is the inspection result normal?
YES- Replace the brake power supply backup unit. Refer to "Removal and Installation" Removal And Installation.
NO- Repair or replace error-detected parts.
20. CHECK BRAKE POWER SUPPLY BACKUP UNIT POWER
1.Turn the power switch OFF.
2.Get out of the vehicle and close all doors (including back door).
3.Disconnect 12V battery cable from negative terminal. Refer to "Precaution for Removing 12V Battery" Precaution For Removing 12V Battery.
4.Disconnect the brake power supply backup unit harness connector.
5.Connect 12V battery cable to negative terminal.
6.Turn the power switch ON.
CAUTION:
Never engage READY state.
7.Check the voltage between brake power supply backup unit and ground.
Is the inspection result normal?
YES- Replace the brake power supply backup unit. Refer to "Removal and Installation" Removal And Installation.
NO- GO TO 21.
21. CHECK BRAKE POWER SUPPLY BACKUP UNIT POWER CIRCUIT
1.Turn the power switch OFF.
2.Get out of the vehicle and close all doors (including back door).
3.Disconnect 12V battery cable from negative terminal. Refer to "Precaution for Removing 12V Battery" Precaution For Removing 12V Battery.
4.Check the 15A fuse (#82).
5.Check the continuity and for short circuit between harness connector terminal 3 of brake power supply backup unit and 15A fuse (#82).
Is the inspection result normal?
YES- Perform trouble diagnosis for 12V battery power supply. Refer to "Wiring Diagram BATTERY POWER SUPPLY -" Battery Power Supply.
NO- Repair or replace error-detected parts.