Diagnosis Procedure

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 master cylinder pressure sensor harness connector for disconnection or looseness.

Is the inspection result normal?

YES 

GO TO STEP 3  .

NO 

Repair / replace harness or connector, securely lock the connector, and GO TO STEP 2  .

With CONSULT

1. Turn the ignition switch OFF.
   NOTE:

   Wait at least 10 seconds after turning ignition switch OFF.

2. Set the vehicle to READY/Start the engine.
   NOTE:

   Wait at least 10 seconds after set the vehicle to READY/start the engine.

3. Repeat step 1 to 2 two or more times.
4. Perform self-diagnosis for "ABS".

Is DTC "C1142" detected?

YES 

GO TO STEP 3  .

NO 

INSPECTION END

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 4  .

NO 

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

1. Turn the ignition switch OFF
2. Disconnect ABS actuator and electric unit (control unit) harness connector.
3. Disconnect master cylinder pressure sensor harness connector.
4. Check the continuity between master cylinder pressure sensor harness connector and ABS actuator and electric unit (control unit) harness connector.

   ABS actuator and electric unit (control unit)		Master cylinder pressure sensor		Continuity
   Connector	Terminal	Connector	Terminal
   E24	10	E70	1	Not existed
   	10		2	Not existed
   	10		3	Existed
   	7		1	Not existed
   	7		2	Existed
   	7		3	Not existed
   	32		1	Existed
   	32		2	Not existed
   	32		3	Not existed

Is the inspection result normal?

YES 

GO TO STEP 5  .

NO 

Repair / replace harness, connector, or terminal.

1. Connect ABS actuator and electric unit (control unit) harness connector.
2. Turn the ignition switch ON.
   NOTE:

   Never set the vehicle to READY/Never start the engine.

3. Check the voltage between master cylinder pressure sensor harness connector terminals.

   +		-	Voltage
   Master cylinder pressure sensor
   Connector	Terminal
   E70	3	1	10 - 16 V

Is the inspection result normal?

YES 

GO TO STEP 6  .

NO 

Replace the ABS actuator and electric unit (control unit). Refer to REMOVAL AND INSTALLATION .

With CONSULT

1. Turn the ignition switch OFF.
2. Connect master cylinder pressure sensor harness connector.
3. Select "ABS", "DATA MONITOR" and " PRESSURE SENSOR" according to this order.
4. Check that the indication changes with the depth of pedal depression. Refer to REFERENCE VALUE .

Is the inspection result normal?

YES 

GO TO STEP 7  .

NO 

GO TO STEP 8  .

With CONSULT

1. Turn the ignition switch OFF.
   NOTE:

   Wait at least 10 seconds after turning ignition switch OFF.

2. Set the vehicle to READY/Start the engine.
   NOTE:

   Wait at least 10 seconds after set the vehicle to READY/start the engine.

3. Repeat step 1 to 2 two or more times.
4. Perform self-diagnosis for "ABS".

Is DTC "C1142" detected?

YES 

Replace the ABS actuator and electric unit (control unit). Refer to REMOVAL AND INSTALLATION .

NO 

INSPECTION END

1. Turn the ignition switch OFF.
2. Connect following terminals using a test harness installed between master cylinder pressure sensor and harness connector.

   Master cylinder pressure sensor	Harness connector
   	Connector	Terminal
   1	E70	1
   2		2
   3		3

3. Turn the ignition switch ON.
   NOTE:

   Never set the vehicle to READY/Never start the engine.

4. Check that the voltage between master cylinder pressure sensor harness connectors changes with the depth of pedal depression.
   NOTE:

   Never short out the terminals while measuring voltage.

   +		-	Voltage
   Master cylinder pressure sensor
   Connector	Terminal
   E70	2	1	0.5 - 4.5 V

Is the inspection result normal?

YES 

Replace the ABS actuator and electric unit (control unit). Refer to REMOVAL AND INSTALLATION .

NO 

Replace the master cylinder pressure sensor. Refer to REMOVAL AND INSTALLATION .