DTC Diagnosis Procedure

CONSULT

Perform neutral position adjustment of steering angle sensor. Refer to Description .

GO TO 2 .

CONSULT

1. Turn the ignition switch OFF.
   NOTE: Wait at least 10 seconds after turning ignition switch OFF.
2. Start the engine.
   NOTE: Wait at least 10 seconds after starting the engine.
3. Perform "Self Diagnostic Result" mode of "ABS".

Is DTC "C1143" detected?

YES

"C1143" is displayed as "CRNT": GO TO 3 .

YES

"C1143" is displayed as "PAST": Inspection End (Erase "Self Diagnostic Result" mode of "ABS").

NO

Inspection End.

1. Turn the ignition switch OFF.
2. Check the ABS actuator and electric unit (control unit) harness connector for disconnection or looseness.
3. Check the steering angle sensor harness connector for disconnection or looseness.

Is the inspection result normal?

YES

GO TO 5 .

NO

Repair / replace harness or connector, securely lock the connector, and GO TO 4 .

CONSULT

1. Turn the ignition switch OFF.
   NOTE: Wait at least 10 seconds after turning ignition switch OFF.
2. Start the engine.
   NOTE: Wait at least 10 seconds after starting the engine.
3. Perform "Self Diagnostic Result" mode of "ABS".

Is DTC "C1143" detected?

YES

GO TO 5 .

NO

Inspection End.

1. Turn the ignition switch OFF.
2. Disconnect steering angle sensor harness connector.
3. Check the voltage between steering angle sensor harness connector and ground.

   Steering angle sensor		-	Voltage (Approx.)
   Connector	Terminal
   M17	4	Ground	0 V

4. Turn the ignition switch ON.
   NOTE: Start the engine.
5. Check the voltage between steering angle sensor harness connector and ground.

   Steering angle sensor		-	Voltage (Approx.)
   Connector	Terminal
   M17	4	Ground	Battery voltage

Is the inspection result normal?

YES

GO TO 7 .

NO

GO TO 6 .

1. Turn the ignition switch OFF.
2. Check fuse 12 (10A).
3. Disconnect fuse block (J/B) harness connector.
4. Check the continuity between steering angle sensor harness connector and fuse block (J/B) harness connector.

   Steering angle sensor		Fuse block (J/B)		Continuity
   Connector	Terminal	Connector	Terminal
   M17	4	M39	1Q	Yes

5. Check the continuity between steering angle sensor harness connector and ground.

   Steering angle sensor		-	Continuity
   Connector	Terminal
   M17	4	Ground	No

Is the inspection result normal?

YES

Perform trouble diagnosis for ignition power supply.

NO

Repair / replace harness, connector, or fuse.

1. Turn the ignition switch OFF.
2. Check the continuity between steering angle sensor harness connector and ground.

   Steering angle sensor		-	Continuity
   Connector	Terminal
   M17	1	Ground	Yes

Is the inspection result normal?

YES

GO TO 8 .

NO

Repair / replace harness or connector.

Check the ABS actuator and electric unit (control unit) power supply and ground circuits. Refer to Diagnosis Procedure .

Is the inspection result normal?

YES

GO TO 9 .

NO

Repair / replace harness, connector, fuse, or fusible link.

1. Check the steering angle sensor pin terminals for damage or loose connection with harness connector.
2. Check the fuse block (J/B) pin terminals for damage or loose connection with harness connector.

Is the inspection result normal?

YES

GO TO 10 .

NO

Repair / replace harness, connector, or terminal.

Check the CAN communication line. Refer to Trouble Diagnosis Flow Chart .

Is the inspection result normal?

YES

GO TO 11 .

NO

Repair / replace harness or connector.

CONSULT

1. Select "Data Monitor" mode of "ABS", check "STR ANGLE SIG".
2. Check that the indication changes with the steering angle when the steering wheel is turned left/right from the neutral position. Refer to Values on the Diagnosis Tool .

Is the inspection result normal?

YES

Replace the ABS actuator and electric unit (control unit). Refer to Removal and Installation .

NO

Replace the steering angle sensor. Refer to Removal and Installation .