Diagnostic Test

With CONSULT

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

GO TO STEP 2  .

With CONSULT

1. Turn the ignition switch OFF → ON.
   CAUTION:

   • Be sure to wait of 10 seconds after turning ignition switch OFF or ON.
   • Start the engine.
2. Repeat step 1 two or more times.
3. Perform self-diagnosis for "ABS".

Is DTC "C1143" detected?

YES - 1 

"CRNT" is displayed: GO TO STEP 3  .

YES - 2 

"PAST" is displayed: INSPECTION END (Erase the memory of self - diagnosis results.)

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 STEP 5  .

NO 

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

With CONSULT

1. Turn the ignition switch OFF → ON.
   CAUTION:

   • Be sure to wait of 10 seconds after turning ignition switch OFF or ON.
   • Start the engine.
2. Repeat step 1 two or more times.
3. Perform self-diagnosis for "ABS".

Is DTC "C1143" detected?

YES 

GO TO STEP 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
   Connector	Terminal
   M77	4	Ground	Approx. 0 V

4. Turn the ignition switch ON.
   CAUTION:

   Start the engine.

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

   Steering angle sensor		-	Voltage
   Connector	Terminal
   M77	4	Ground	10 - 16 V

Is the inspection result normal?

YES 

GO TO STEP 7  .

NO 

GO TO STEP 6  .

1. Turn the ignition switch OFF.
2. Check the 10A fuse (#54).
3. Disconnect IPDM E/R harness connector.
4. Check the continuity between steering angle sensor harness connector and IPDM E/R harness connector.

   Steering angle sensor		IPDM E/R		Continuity
   Connector	Terminal	Connector	Terminal
   M77	4	E121	35	Existed

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

   Steering angle sensor		-	Continuity
   Connector	Terminal
   M77	4	Ground	Not existed

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
   M77	1	Ground	Existed

Is the inspection result normal?

YES 

GO TO STEP 8  .

NO 

Repair / replace harness or connector.

Check the ABS actuator and electric unit (control unit) power supply and ground circuit. Refer to DIAGNOSIS PROCEDURE .

Is the inspection result normal?

YES 

GO TO STEP 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 IPDM E/R pin terminals for damage or loose connection with harness connector.

Is the inspection result normal?

YES 

GO TO STEP 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 STEP 11  .

NO 

Repair / replace harness or connector. Refer to PRECAUTIONS FOR HARNESS REPAIR .

With CONSULT

1. "ABS", "DATA MONITOR" and "STR ANGLE SIG" according to this order.
2. Check that the indication changes with the steering angle when the steering wheel is turned left/right from the neutral position. Refer to REFERENCE VALUE .

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 .