DTC B1D36-86: Turn Indicator Switch Signal Invalid: Procedure

VERIFY MAIN BODY ECU DTCS AGAIN

Clear the DTC for the main body ECU using the Techstream.
Refer to DTC CHECK / CLEAR

Body Electrical > Body Control Module > Clear DTCs
Switch the ignition ON (engine off or on) and wait for 2 s or more.
Retrieve the main body ECU DTCs using the Techstream.
Refer to DTC CHECK / CLEAR

Body Electrical > Body Control Module > Trouble Codes

Is the same DTC displayed?

Result

Result
Yes
No

Result: 2

See step 6

Result: 1

Yes

See step 2

DETERMINE MALFUNCTIONING LOCATION BY PERFORMING PID/DATA MONITOR INSPECTION

Using the Techstream, display the following PIDs for the engine stop and start ECU.

Refer to DATA LIST / ACTIVE TEST

Turn Switch (Left)
Turn Switch (Right)

Body Electrical > Smart Start Unit > Data List

Tester Display
Turn Switch (Left)
Turn Switch (Right)

Does the PID monitoring value switch correctly according to the headlight dimmer switch operation?

Result

Result
Yes
No

Result: 1

Yes

See step 12

Result: 2

See step 3

INSPECT HEADLIGHT DIMMER SWITCH

Inspect the headlight dimmer switch
Refer to INSPECTION

Is the headlight dimmer switch normal?

Result

Result
Yes
No

Result: 1

Yes

See step 10

Result: 2

See step 11

DETERMINE MALFUNCTIONING LOCATION BY PERFORMING PID/DATA MONITOR INSPECTION

Using the Techstream, display the following PIDs for the main body ECU.

Refer to DATA LIST / ACTIVE TEST

Turn Switch

Body Electrical > Body Control Module > Data List

Tester Display
Turn Switch

Does the PID monitoring value switch correctly according to the headlight dimmer switch operation?

Result

Result
Yes
No

Result: 1

Yes

See step 8

Result: 2

See step 9

VERIFY THAT REPAIRS HAVE BEEN COMPLETED

Clear the DTC for the main body ECU using the Techstream.
Refer to DTC CHECK / CLEAR

Body Electrical > Body Control Module > Clear DTCs
Switch the ignition ON (engine off or on) and wait for 2 s or more.
Retrieve the main body ECU DTCs using the Techstream.
Refer to DTC CHECK / CLEAR

Body Electrical > Body Control Module > Trouble Codes

Is the same DTC displayed?

Result

Result
Yes
No

Result: 1

Yes

See step 7

Result: 2

See step 6

VERIFY IF OTHER DTCS DISPLAYED

Are any other DTCs displayed?

Result

Result
Yes
No

Result: 1

Yes

REPAIR OR REPLACE THE MALFUNCTIONING PART ACCORDING TO THE APPLICABLE DTC TROUBLESHOOTING.

Refer to DIAGNOSTIC TROUBLE CODE CHART

Result: 2

DTC TROUBLESHOOTING COMPLETED.

REPEAT THE INSPECTION FROM STEP 1.

If the malfunction recurs, replace the main body ECU.
Refer to REMOVAL

Go to the next step.

Result

Proceed to
NEXT

Result: 1

See step 6

GO TO THE NEXT STEP. (CIRCUIT BETWEEN ENGINE STOP AND START ECU AND MAIN BODY ECU IS NORMAL)
Result

Proceed to

NEXT

Result: 1

NEXT

See step 5

REPLACE THE ENGINE STOP AND START ECU, THEN GO TO THE NEXT STEP.

Refer to INSTALLATION

Result

Proceed to
NEXT

Result: 1

See step 5

REPLACE THE ENGINE STOP AND START ECU, THEN GO TO STEP 5.

Refer to INSTALLATION

Result

Proceed to
NEXT

Result: 1

See step 5

REPLACE THE HEADLIGHT DIMMER SWITCH, THEN GO TO STEP 5.

Refer to REMOVAL

Result

Proceed to
NEXT

Result: 1

See step 5

GO TO STEP 4. (CIRCUIT BETWEEN HEADLIGHT DIMMER SWITCH AND ENGINE STOP AND START ECU IS NORMAL.)
Result

Proceed to

NEXT

Result: 1

NEXT

See step 4