Description

Turn switch internal circuit malfunction

Detection condition

• Start stop unit detects that the turn switch LH and RH are turned on simultaneously for 5 s or more.

Fail-safe

Not applicable

Possible cause

• Start stop unit configuration error

• The installations of the light switch and the wiper and washer switch are reversed.

• Turn switch malfunction

• Start stop unit malfunction

System wiring diagram

Not applicable

Step

Inspection

Action

1

• Using the M-MDS, perform the start stop unit configuration (using As-Built data).

  (See START STOP UNIT CONFIGURATION (USING AS-BUILT DATA).)

• Clear the DTC for the start stop unit using the M-MDS.

  (See CLEARING DTC [START STOP UNIT].)

• Operate the turn switch to RH position and wait for 5 s or more.

• Operate the turn switch to LH position and wait for 5 s or more.

• Retrieve the start stop unit DTCs using the M-MDS.

  (See DTC INSPECTION [START STOP UNIT].)

• Is the same DTC displayed?

Yes

Using the M-MDS, perform the start stop unit configuration (using As-Built data) again, then go to the next step.

(See START STOP UNIT CONFIGURATION (USING AS-BUILT DATA).)

No

Go to Step 5.

2

• Verify the installation condition of the light switch and the wiper and washer switch.

• Are the light switch and the wiper and washer switch installed correctly?

Yes

Go to the next step.

No

Install the light switch and the wiper and washer switch properly, then go to Step 4.

(See LIGHT SWITCH REMOVAL/INSTALLATION.)

(See WIPER AND WASHER SWITCH REMOVAL/INSTALLATION.)

3

• Inspect the turn switch.

  (See LIGHT SWITCH INSPECTION.)

• Is the turn switch normal?

Yes

Go to the next step.

No

Replace the light switch, then go to the next step.

(See LIGHT SWITCH REMOVAL/INSTALLATION.)

4

• Clear the DTC for the start stop unit using the M-MDS.

  (See CLEARING DTC [START STOP UNIT].)

• Operate the turn switch to RH position and wait for 5 s or more.

• Operate the turn switch to LH position and wait for 5 s or more.

• Perform the start stop unit DTC inspection using the M-MDS.

  (See DTC INSPECTION [START STOP UNIT].)

• Is the same DTC displayed?

Yes

Repeat the inspection from Step 1.

• If the malfunction recurs, replace the start stop unit.

  (See START STOP UNIT REMOVAL/INSTALLATION.)

Go to the next step.

No

Go to the next step.

5

• Are any other DTCs displayed?

Yes

Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.

(See DTC TABLE [START STOP UNIT].)

No

DTC troubleshooting completed.