Diagnosis Procedure

caution

Never check between wheel sensor harness connector terminals.

1.CHECK WHEEL SENSOR

Disconnect 12V battery negative terminal.
Check the rear left wheel sensor for damage.

Is the inspection result normal?

2.REPLACE WHEEL SENSOR (1)

With M.U.T.-III SE

Replace the rear left wheel sensor. Refer to Removal and Installation.
Connect 12V battery negative terminal.
Erase Diagnostic Trouble Code result for “ABS".
Electric motor switch OFF (Auto ACC function OFF) → ON → OFF (Auto ACC function OFF).
Electric motor switch ON.
note Wait at least 10 seconds after electric motor switch ON.
Perform Diagnostic Trouble Code for “ABS".

Is DTC “C1065-1C" detected?

INSPECTION END

3.CHECK CONNECTOR

Disconnect 12V battery negative terminal.
Check the ABS actuator and electric unit (control unit) harness connector for disconnection or looseness.
Check the rear left wheel sensor harness connector for disconnection or looseness.

Is the inspection result normal?

Repair / replace harness or connector, securely lock the connector.

4.PERFORM DIAGNOSTIC TROUBLE CODE (1)

With M.U.T.-III SE

Connect 12V battery negative terminal.
Erase Diagnostic Trouble Code result for “ABS".
Electric motor switch OFF (Auto ACC function OFF) → ON → OFF (Auto ACC function OFF).
Electric motor switch ON.
note Wait at least 10 seconds after electric motor switch ON.
Perform Diagnostic Trouble Code for “ABS".

Is DTC “C1065-1C" detected?

INSPECTION END

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

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

Is the inspection result normal?

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

6.CHECK TERMINAL

Disconnect 12V battery negative terminal.
Disconnect ABS actuator and electric unit (control unit) harness connector and then check the ABS actuator and electric unit (control unit) terminals for damage or loose connection with harness connector.
Disconnect rear left wheel sensor harness connector and check the rear left wheel sensor terminals for damage or loose connection with harness connector.

Is the inspection result normal?

Repair / replace harness, connector, or terminal.

7.PERFORM DIAGNOSTIC TROUBLE CODE (2)

With M.U.T.-III SE

Connect ABS actuator and electric unit (control unit) harness connector.
Connect rear left wheel sensor harness connector.
Connect 12V battery negative terminal.
Erase Diagnostic Trouble Code result for “ABS".
Electric motor switch OFF (Auto ACC function OFF) → ON → OFF (Auto ACC function OFF).
Electric motor switch ON.
note Wait at least 10 seconds after electric motor switch ON.
Perform Diagnostic Trouble Code for “ABS".

Is DTC “C1065-1C" detected?

INSPECTION END

8.CHECK WHEEL SENSOR HARNESS

Disconnect 12V battery negative terminal.
Disconnect ABS actuator and electric unit (control unit) harness connector.
Disconnect rear left wheel sensor harness connector.
Check the continuity between ABS actuator and electric unit (control unit) harness connector and rear left wheel sensor harness connector.
- Measurement connector and terminal for power supply circuit
  ABS actuator and electric unit (control unit) Rear left wheel sensor Continuity
  Connector Terminal Connector Terminal
  E125 39 B59 1 Existed
- Measurement connector and terminal for signal circuit
  ABS actuator and electric unit (control unit) Rear left wheel sensor Continuity
  Connector Terminal Connector Terminal
  E125 23 B59 2 Existed

ABS actuator and electric unit (control unit)	Rear left wheel sensor	Continuity
E125	39	B59	1	Existed

ABS actuator and electric unit (control unit)	Rear left wheel sensor	Continuity
E125	23	B59	2	Existed

Is the inspection result normal?

Repair / replace harness or connector.

9.PERFORM DIAGNOSTIC TROUBLE CODE (3)

With M.U.T.-III SE

Connect ABS actuator and electric unit (control unit) harness connector.
Connect rear left wheel sensor harness connector.
Connect 12V battery negative terminal.
Erase Diagnostic Trouble Code result for “ABS".
Electric motor switch OFF (Auto ACC function OFF) → ON → OFF (Auto ACC function OFF).
Electric motor switch ON.
note Wait at least 10 seconds after electric motor switch ON.
Perform Diagnostic Trouble Code for “ABS".

Is DTC “C1065-1C" detected?

INSPECTION END

10.REPLACE WHEEL SENSOR

With M.U.T.-III SE

Replace the rear left wheel sensor. Refer to Removal and Installation.
Connect ABS actuator and electric unit (control unit) harness connector.
Connect 12V battery negative terminal.
Erase Diagnostic Trouble Code result for “ABS".
Electric motor switch OFF (Auto ACC function OFF) → ON → OFF (Auto ACC function OFF).
Electric motor switch ON.
note Wait at least 10 seconds after electric motor switch ON.
Perform Diagnostic Trouble Code for “ABS".

Is DTC “C1065-1C" detected?

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

INSPECTION END