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 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, and wait 10 seconds or more.
2.Set the vehicle to READY.
CAUTION:
Stop the vehicle.
3.Depress the brake pedal several time.
4.Turn the power switch OFF ON.
CAUTION:
- Be sure to wait of 10 seconds after turning power switch OFF or ON.
- Set the vehicle to READY.
5.Repeat step 4 two or more times.
6.Perform self-diagnosis for "ABS".
Is DTC "C1176" detected?
YES- Proceed to "Diagnosis Procedure" .
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 power switch OFF.
2.Check the 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
With CONSULT
1.Erase self-diagnosis result for "ABS".
2.Turn the power switch OFF ON OFF.
CAUTION:
Be sure to wait of 10 seconds after turning power switch OFF or ON.
3.Set the vehicle to READY.
CAUTION:
Stop the vehicle.
4.Depress the brake pedal several times.
5.Turn the power switch OFF ON.
CAUTION:
- Be sure to wait of 10 seconds after turning power switch OFF or ON.
- Set the vehicle to READY.
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. CHECK ASCD BRAKE SWITCH CLEARANCE
1.Turn the power switch OFF.
2.Check the ASCD brake switch clearance. Refer to "Inspection and Adjustment" Adjustments.
Is the inspection result normal?
YES- GO TO 6.
NO- Adjust ASCD brake switch clearance. Refer to "Inspection and Adjustment" Adjustments. GO TO 5.
5. CHECK DATA MONITOR (1)
With CONSULT
1.Erase self-diagnosis result for "ABS".
2.Turn the power switch OFF ON OFF.
CAUTION:
Be sure to wait of 10 seconds after turning power switch OFF or ON.
3.Set the vehicle to READY.
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. Refer to "Reference Value" Pinout Values and Diagnostic Parameters.
5.Select "ABS", "DATA MONITOR" and "PRESS SENSOR" according to this order. Check that data monitor displays "5 bar" or less when brake pedal is depress. Refer to "Reference Value" Pinout Values and Diagnostic Parameters.
Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 6.
6. CHECK ASCD BRAKE SWITCH
Check the ASCD brake switch. Refer to "Component Inspection" .
Is the inspection result normal?
YES- GO TO 8.
NO- Replace ASCD brake switch. Refer to "Removal and Installation" Removal And Installation. GO TO 7.
7. CHECK DATA MONITOR (2)
With CONSULT
1.Erase self-diagnosis result for "ABS".
2.Turn the power switch OFF, and wait 10 seconds or more.
3.Set the vehicle to READY.
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. Refer to "Reference Value" Pinout Values and Diagnostic Parameters.
5.Select "ABS", "DATA MONITOR" and "PRESS SENSOR" according to this order. Check that data monitor displays "5 bar" or less when brake pedal is depress. Refer to "Reference Value" Pinout Values and Diagnostic Parameters.
Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 8.
8. CHECK CONNECTOR AND TERMINAL
1.Turn the power 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 ASCD brake switch harness connector.
6.Check the ASCD brake switch harness connector for disconnection or looseness.
7.Check the ASCD brake switch pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES- GO TO 10.
NO- Repair or replace error-detected parts. GO TO 9.
9. CHECK DATA MONITOR (3)
With CONSULT
1.Connect ABS actuator and electric unit (control unit) harness connector.
2.Connect ASCD brake switch harness connector.
3.Erase self-diagnosis result for "ABS".
4.Turn the power switch OFF ON OFF.
CAUTION:
Be sure to wait of 10 seconds after turning power switch OFF or ON.
5.Turn the power switch ON.
CAUTION:
Never set the vehicle to READY.
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. Refer to "Reference Value" Pinout Values and Diagnostic Parameters.
7.Select "ABS", "DATA MONITOR" and "PRESS SENSOR" according to this order. Check that data monitor displays "5 bar" or less when brake pedal is depress. Refer to "Reference Value" Pinout Values and Diagnostic Parameters.
Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 10.
10. CHECK ASCD BRAKE SWITCH CIRCUIT (1)
1.Turn the power 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 power switch ON.
CAUTION:
Never set the vehicle to READY.
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). Refer to "Removal and Installation" Removal And Installation.
NO- Repair or replace error-detected parts. GO TO 11.
11. CHECK ASCD BRAKE SWITCH CIRCUIT (2)
1.Turn the power switch OFF.
2.Disconnect ASCD brake switch harness connector.
3.Check the continuity between ABS actuator and electric unit (control unit) harness connector and ASCD
brake 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). Refer to "Removal and Installation" Removal And Installation.
NO- Repair or replace error-detected parts. GO TO 12.
12. CHECK DATA MONITOR (4)
With CONSULT
1.Connect ABS actuator and electric unit (control unit) harness connector.
2.Connect ASCD brake switch harness connector.
3.Erase self-diagnosis result for "ABS".
4.Turn the power switch OFF ON OFF.
CAUTION:
Be sure to wait of 10 seconds after turning power switch OFF or ON.
5.Set the vehicle to READY.
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. Refer to "Reference Value" Pinout Values and Diagnostic Parameters.
7.Select "ABS", "DATA MONITOR" and "PRESS SENSOR" according to this order. Check that data monitor displays "5 bar" or less when brake pedal is depress. Refer to "Reference Value" Pinout Values and Diagnostic Parameters.
Is the inspection result normal?
YES- INSPECTION END
NO- Replace ABS actuator and electric unit (control unit). Refer to "Removal and Installation" Removal And Installation.
Component Inspection
1. CHECK ASCD BRAKE SWITCH
1.Turn the power switch OFF.
2.Disconnect ASCD brake switch harness connector.
3.Check the continuity between ASCD brake switch harness connector terminals.
Is the inspection result normal?
YES- INSPECTION END
NO- Replace ASCD brake switch. Refer to "Removal and Installation" Removal And Installation.