C1109

C1109 POWER AND GROUND SYSTEM

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 ON.

CAUTION:
- Be sure to wait of 10 seconds after turning power switch OFF or ON.
- Set the vehicle to READY.
2.Repeat step 1 two or more times.
3.Perform self-diagnosis for "ABS".
Is DTC "C1109" detected?
YES- Proceed to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. 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 3.
NO- Repair or replace error-detected parts, securely lock the connector, and GO TO 2.

2. PERFORM SELF-DIAGNOSIS

With CONSULT
1.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.
2.Repeat step 1 two or more times.
3.Perform self-diagnosis for "ABS".
Is DTC "C1109" detected?
YES- GO TO 3.
NO- INSPECTION END

3. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SWITCH ON POWER SUP-

PLY
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- GO TO 5.
NO- GO TO 4.

4. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SWITCH ON POWER SUP-

PLY CIRCUIT
1.Turn the power switch OFF.
2.Check the 10A fuse (#4).
3.Check the continuity and short circuit between ABS actuator and electric unit (control unit) harness connector terminal (16) and 10A fuse (#4).
Is the inspection result normal?
YES- Perform trouble diagnosis for power switch ON power supply. Refer to "Wiring Diagram ON POWER SUPPLY -" On Power Supply.
NO- Repair or replace error-detected parts.

5. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT

1.Turn the power switch OFF.
2.Check the continuity between ABS actuator and electric unit (control unit) harness connector and ground.





Is the inspection result normal?
YES- GO TO 6.
NO- Repair or replace error-detected parts.

6. CHECK TERMINAL

Check the ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with harness connector.
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.