ABS (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC C0111 MOTOR/MOTOR RELAY MALFUNCTION

DTC DETECTING CONDITION:

• Defective motor

• Defective motor relay

• Defective harness connector

TROUBLE SYMPTOM:

ABS does not operate.

WIRING DIAGRAM:

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1.CHECK INPUT VOLTAGE OF ABSCM&H/U.

1) Turn the ignition switch to OFF.

2) Disconnect the ABSCM&H/U connectors.

3) Turn the ignition switch to ON.

4) Measure the voltage between ABSCM&H/U connector and chassis ground.

Connector & terminal

(B301) No. 13 (+) — Chassis ground (−):

Is the voltage 10 — 15 V?

Repair the harness connector between battery and ABSCM&H/U.

2.CHECK INSTALLATION OF MOTOR GROUND.

Is the motor ground terminal installation bolt tightened 33 N·m (3.3 kgf-m, 24.3 ft-lb)?

Tighten the motor ground terminal installation bolt.

3.CHECK GROUND CIRCUIT OF MOTOR.

1) Turn the ignition switch to OFF.

2) Measure the resistance between the ABSCM&H/U connector and chassis ground.

Connector & terminal

(B301) No. 12 — Chassis ground:

Is the resistance less than 10 Ω?

Repair the ABSCM&H/U ground harness.

4.CHECK INPUT VOLTAGE OF ABSCM&H/U.

1) Run the engine at idle.

2) Measure the voltage between ABSCM&H/U connector and chassis ground.

Connector & terminal

(B301) No. 18 (+) — Chassis ground (−):

Is the voltage 10 — 15 V?

Repair the harness connector between battery, ignition switch and ABSCM&H/U.

5.CHECK THE ABSCM&H/U GROUND CIRCUIT.

1) Turn the ignition switch to OFF.

2) Measure the resistance between the ABSCM&H/U connector and chassis ground.

Connector & terminal

(B301) No. 15 — Chassis ground:

Is the resistance less than 10 Ω?

Repair the ABSCM&H/U ground harness.

6.CHECK POOR CONTACT OF CONNECTOR.

Turn the ignition switch to OFF.

Is there poor contact of connector between generator, battery and ABSCM&H/U?

Repair the connector.

7.CHECK ABSCM&H/U.

1) Connect all connectors.

2) Clear the memory.

3) Perform the Inspection Mode.

4) Read the DTC.

Is the same DTC displayed?

Replace the ABSCM&H/U.

8.CHECK FOR ANY OTHER DTC ON DISPLAY.

Is any other DTC displayed?

Check DTC using “List of Diagnostic Trouble Code (DTC)”.

Temporary poor contact occurs.

NOTE:

Though the ABS warning light remains on at this time, this is normal. Drive the vehicle at 12 km/h (7 MPH) or more in order to turn ABS warning light off. Be sure to drive the vehicle and check that the warning light goes off.