DTC B1D06:15 [BCM]

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Malfunction Location

• Turn light (LH) circuit malfunction

Detection Condition

• Open circuit or short to power supply in wiring harness between turn light (LH) and BCM

Possible Causes

• Connection malfunction with connector

• Open circuit or short to power supply in wiring harness between front turn light (LH) terminal C and BCM terminal 1L

• Open circuit or short to power supply in wiring harness between rear turn light (LH) terminal A and BCM terminal 3L

• Open circuit or short to power supply in wiring harness between front side turn light (LH) terminal A and BCM terminal 1L

• Open circuit between front turn light (LH) terminal G and body ground

• Open circuit between rear turn light (LH) terminal F and body ground

• Open circuit between front side turn light (LH) terminal B and body ground

• Turn light malfunction

• BCM malfunction

System Wiring Diagram

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Diagnostic Procedure

Step

Inspection

Action

1

PERFORM DTC INSPECTION

•  Clear DTCs using the M-MDS.
(See CLEARING DTC [BCM].)

•  Turn the turn switch on.

•  Perform the BCM DTC inspection using the M-MDS.
(See DTC INSPECTION [BCM].)

•  Is DTC B1D06:15 displayed?

Yes

Go to the next step.

No

DTC troubleshooting completed.

2

PERFORM INSPECTION OF FRONT TURN LIGHT (LH), REAR TURN LIGHT (LH), AND FRONT SIDE TURN LIGHT (LH)

•  Disconnect the negative and positive battery cables.

•  Inspect the front turn light (LH), rear turn light (LH), and front side turn light (LH).

•  Is the bulb normal?

Yes

Go to the next step.

No

Replace the bulb, then go to the final step.

(See FRONT TURN LIGHT BULB REMOVAL/INSTALLATION.)

(See FRONT SIDE TURN LIGHT REMOVAL/INSTALLATION.)

(See REAR COMBINATION LIGHT BULB REMOVAL/INSTALLATION.)

3

VERIFY FRONT TURN LIGHT (LH) CONNECTOR CONDITION

•  Disconnect the negative battery cable.

•  Disconnect the front turn light connector (LH).

•  Inspect the connection condition and wiring harness.

•  Are the connector terminals normal without damage, deformation, corrosion, or disconnection?

Yes

Go to the next step.

No

Repair or replace the connector, then go to the final step.

4

INSPECT WIRING HARNESS BETWEEN FRONT TURN LIGHT (LH) AND BODY GROUND FOR OPEN CIRCUIT

•  Inspect for continuity between front turn light (LH) terminal G and body ground

•  Is there continuity?

Yes

Go to the next step.

No

Repair or replace the related wiring harness, then go to the final step.

5

VERIFY FRONT SIDE TURN LIGHT (LH) CONNECTOR CONDITION

•  Disconnect the negative battery cable.

•  Disconnect the front side turn light connector (LH).

•  Inspect the connection condition and wiring harness.

•  Are the connector terminals normal without damage, deformation, corrosion, or disconnection?

Yes

Go to the next step.

No

Repair or replace the connector, then go to the final step.

6

VERIFY WIRING HARNESS BETWEEN FRONT SIDE TURN LIGHT (LH) AND BODY GROUND FOR OPEN CIRCUIT

•  Inspect for continuity between front side turn light (LH) terminal B and body ground.

•  Is there continuity?

Yes

Go to the next step.

No

Repair or replace the related wiring harness, then go to the final step.

7

VERIFY REAR TURN LIGHT (LH) CONNECTOR CONDITION

•  Disconnect the negative battery cable.

•  Disconnect the rear turn light connector (LH).

•  Verify the connection condition of the rear turn light connector (LH) and the wiring harness.

•  Are the rear turn light connector (LH) and wiring harness connections condition normal?

Yes

Go to the next step.

No

Repair or replace the connector, then go to the final step.

8

INSPECT WIRING HARNESS BETWEEN REAR TURN LIGHT (LH) AND BODY GROUND FOR OPEN CIRCUIT

•  Inspect for continuity between rear turn light (LH) terminal F and body ground.

•  Is there continuity?

Yes

Go to the next step.

No

Repair or replace the related wiring harness, then go to the final step.

9

VERIFY BCM CONNECTOR CONDITION

•  Disconnect the BCM connector.

•  Inspect the connection condition and wiring harness.

•  Are the connector terminals normal without damage, deformation, corrosion, or disconnection?

Yes

Go to the next step.

No

Repair or replace the connector, then go to the final step.

10

INSPECT WIRING HARNESS BETWEEN FRONT TURN LIGHT (LH), REAR TURN LIGHT (LH), FRONT SIDE TURN LIGHT (LH) AND BCM FOR OPEN CIRCUIT

•  Inspect for continuity between the following terminals.

―  Between front turn light (LH) terminal C and BCM terminal 1L

―  Between front side turn light (LH) terminal A and BCM terminal 1L

―  Between rear turn light (LH) terminal A and BCM terminal 3L

•  Is there continuity?

Yes

Go to the next step.

No

Repair or replace the related wiring harness, then go to the final step.

11

INSPECT WIRING HARNESS BETWEEN FRONT TURN LIGHT (LH), FRONT SIDE TURN LIGHT (LH), REAR TURN LIGHT (LH) AND BCM FOR SHORT TO POWER SUPPLY

•  Measure the voltage between the following terminals.

―  BCM terminal 1L

―  BCM terminal 3L

•  Is there B+?

Yes

Repair or replace the related wiring harness, then go to the final step.

No

Go to the next step.

12

VERIFY TROUBLESHOOTING COMPLETED

•  Connect all the connectors.

•  Connect the battery cable.

•  Clear DTCs using the M-MDS.
(See CLEARING DTC [BCM].)

•  Turn the turn switch on.

•  Perform the BCM DTC inspection using the M-MDS.
(See DTC INSPECTION [BCM].)

•  Is DTC B1D06:15 displayed?

Yes

Replace the BCM.

(See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.)

No

DTC troubleshooting completed.

Step	Inspection		Action
1	PERFORM DTC INSPECTION • Clear DTCs using the M-MDS. (See CLEARING DTC [BCM].) • Turn the turn switch on. • Perform the BCM DTC inspection using the M-MDS. (See DTC INSPECTION [BCM].) • Is DTC B1D06:15 displayed?	Yes	Go to the next step.
1		No	DTC troubleshooting completed.
2	PERFORM INSPECTION OF FRONT TURN LIGHT (LH), REAR TURN LIGHT (LH), AND FRONT SIDE TURN LIGHT (LH) • Disconnect the negative and positive battery cables. • Inspect the front turn light (LH), rear turn light (LH), and front side turn light (LH). • Is the bulb normal?	Yes	Go to the next step.
2		No	Replace the bulb, then go to the final step. (See FRONT TURN LIGHT BULB REMOVAL/INSTALLATION.) (See FRONT SIDE TURN LIGHT REMOVAL/INSTALLATION.) (See REAR COMBINATION LIGHT BULB REMOVAL/INSTALLATION.)
3	VERIFY FRONT TURN LIGHT (LH) CONNECTOR CONDITION • Disconnect the negative battery cable. • Disconnect the front turn light connector (LH). • Inspect the connection condition and wiring harness. • Are the connector terminals normal without damage, deformation, corrosion, or disconnection?	Yes	Go to the next step.
3		No	Repair or replace the connector, then go to the final step.
4	INSPECT WIRING HARNESS BETWEEN FRONT TURN LIGHT (LH) AND BODY GROUND FOR OPEN CIRCUIT • Inspect for continuity between front turn light (LH) terminal G and body ground • Is there continuity?	Yes	Go to the next step.
4		No	Repair or replace the related wiring harness, then go to the final step.
5	VERIFY FRONT SIDE TURN LIGHT (LH) CONNECTOR CONDITION • Disconnect the negative battery cable. • Disconnect the front side turn light connector (LH). • Inspect the connection condition and wiring harness. • Are the connector terminals normal without damage, deformation, corrosion, or disconnection?	Yes	Go to the next step.
5		No	Repair or replace the connector, then go to the final step.
6	VERIFY WIRING HARNESS BETWEEN FRONT SIDE TURN LIGHT (LH) AND BODY GROUND FOR OPEN CIRCUIT • Inspect for continuity between front side turn light (LH) terminal B and body ground. • Is there continuity?	Yes	Go to the next step.
6		No	Repair or replace the related wiring harness, then go to the final step.
7	VERIFY REAR TURN LIGHT (LH) CONNECTOR CONDITION • Disconnect the negative battery cable. • Disconnect the rear turn light connector (LH). • Verify the connection condition of the rear turn light connector (LH) and the wiring harness. • Are the rear turn light connector (LH) and wiring harness connections condition normal?	Yes	Go to the next step.
7		No	Repair or replace the connector, then go to the final step.
8	INSPECT WIRING HARNESS BETWEEN REAR TURN LIGHT (LH) AND BODY GROUND FOR OPEN CIRCUIT • Inspect for continuity between rear turn light (LH) terminal F and body ground. • Is there continuity?	Yes	Go to the next step.
8		No	Repair or replace the related wiring harness, then go to the final step.
9	VERIFY BCM CONNECTOR CONDITION • Disconnect the BCM connector. • Inspect the connection condition and wiring harness. • Are the connector terminals normal without damage, deformation, corrosion, or disconnection?	Yes	Go to the next step.
9		No	Repair or replace the connector, then go to the final step.
10	INSPECT WIRING HARNESS BETWEEN FRONT TURN LIGHT (LH), REAR TURN LIGHT (LH), FRONT SIDE TURN LIGHT (LH) AND BCM FOR OPEN CIRCUIT • Inspect for continuity between the following terminals. ― Between front turn light (LH) terminal C and BCM terminal 1L ― Between front side turn light (LH) terminal A and BCM terminal 1L ― Between rear turn light (LH) terminal A and BCM terminal 3L • Is there continuity?	Yes	Go to the next step.
10		No	Repair or replace the related wiring harness, then go to the final step.
11	INSPECT WIRING HARNESS BETWEEN FRONT TURN LIGHT (LH), FRONT SIDE TURN LIGHT (LH), REAR TURN LIGHT (LH) AND BCM FOR SHORT TO POWER SUPPLY • Measure the voltage between the following terminals. ― BCM terminal 1L ― BCM terminal 3L • Is there B+?	Yes	Repair or replace the related wiring harness, then go to the final step.
11		No	Go to the next step.
12	VERIFY TROUBLESHOOTING COMPLETED • Connect all the connectors. • Connect the battery cable. • Clear DTCs using the M-MDS. (See CLEARING DTC [BCM].) • Turn the turn switch on. • Perform the BCM DTC inspection using the M-MDS. (See DTC INSPECTION [BCM].) • Is DTC B1D06:15 displayed?	Yes	Replace the BCM. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.)
12		No	DTC troubleshooting completed.