DTC C200B:1C, C200C:1C

Torque sensor

DETECTION CONDITION

• Open or short circuit is detected in torque sensor circuit

FAIL-SAFE FUNCTION

• Control disabled

• Power steering malfunction indicator light: Illuminated

POSSIBLE CAUSE

• Open or short circuit in wiring harness between the EPS CM terminals and torque sensor.

• Poor connection at connectors

• Torque sensor malfunction

• EPS CM malfunction

SYSTEM WIRING DIAGRAM

Not applicable

Step

Inspection

Action

1

• Connect the M-MDS to the DLC-2.

• Switch the ignition ON (engine off).

• Access “STR_TRQ_S_M” and ”STR_TRQ_S_S” PIDs.

  (See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS.)

• Verify that the data monitor value changes when the steering wheel is turned.

• Left: 0—positive

• Right: 0— negative

• Do the torque sensor signal values change in the same way?

Yes

Malfunction may be temporary. Go to step 3.

No

Go to the next step.

2

• Switch the ignition off.

• Disconnect the torque sensor connector.

• Are the connector connection, connector pins, and wiring harness normal?

Yes

Replace the steering column (torque sensor), then go to the next step.

(See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)

No

Repair or replace the connector or wiring harness, then go to the next step.

3

• Clear the DTC from the memory.

  (See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS.)

• Is the same DTC present?

  (See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS.)

Yes

Repeat the inspection from Step 1.

If the malfunction recurs, replace the EPS CM, then go to the next step.

(See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)

No

Go to the next step.

4

• Are any other DTCs output?

  (See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS.)

Yes

Go to the applicable DTC inspection.

(See ELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS.)

No

DTC troubleshooting completed.