Description

Blind spot monitoring (BSM) warning light (LH) circuit malfunction

Detection condition

• Blind spot monitoring (BSM) control module (RH) detects a short to ground in the blind spot monitoring (BSM) warning light (LH) circuit with the ignition switched ON (engine off or on).

Fail-safe

• Blind spot monitoring (BSM) system is stopped.

Possible cause

• Blind spot monitoring (BSM) warning light (LH) connector or terminal malfunction

• Blind spot monitoring (BSM) control module (RH) connector or terminal malfunction

• Short to ground in wiring harness between blind spot monitoring (BSM) control module (RH) terminal E and blind spot monitoring (BSM) warning light (LH) terminal D

• Blind spot monitoring (BSM) warning light (LH) malfunction

• Blind spot monitoring (BSM) control module (RH) malfunction

Step

Inspection

Action

1

• Switch the ignition off.

• Disconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

• Disconnect the blind spot monitoring (BSM) warning light (LH) connector.

• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.

• Is the connector normal?

Yes

Go to the next step.

No

Repair or replace the connector, then go to Step 5.

2

• Disconnect the blind spot monitoring (BSM) control module (RH) connector.

• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.

• Is the connector normal?

Yes

Go to the next step.

No

Repair or replace the connector, then go to Step 5.

3

• Verify that the blind spot monitoring (BSM) control module (RH) and blind spot monitoring (BSM) warning light (LH) connectors are disconnected.

• Inspect for continuity between blind spot monitoring (BSM) warning light (LH) terminal D (wiring harness-side) and body ground.

• Is there continuity?

Yes

Refer to the wiring diagram and verify whether or not there is a common connector between blind spot monitoring (BSM) control module (RH) terminal E and blind spot monitoring (BSM) warning light (LH) terminal D.

If there is a common connector:

• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short to ground.

Go to Step 5.

No

Go to the next step.

4

• Inspect the blind spot monitoring (BSM) warning light (LH).

  (See OUTER MIRROR GLASS INSPECTION.)

• Is the blind spot monitoring (BSM) warning light (LH) normal?

Yes

Go to the next step.

No

Replace the outer mirror glass (LH), then go to the next step.

(See OUTER MIRROR GLASS REMOVAL.)

(See OUTER MIRROR GLASS INSTALLATION.)

5

• Always reconnect all disconnected connectors.

• Connect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

• Clear the blind spot monitoring (BSM) control module DTCs using the M-MDS.

  (See CLEARING DTC [BLIND SPOT MONITORING (BSM) CONTROL MODULE].)

• Illuminate the blind spot monitoring (BSM) warning light (LH) using the simulation item WRN_IND_L.

  (See ACTIVE COMMAND MODES INSPECTION [BLIND SPOT MONITORING (BSM) CONTROL MODULE].)

• Retrieve the blind spot monitoring (BSM) control module DTCs using the M-MDS.

  (See DTC INSPECTION [BLIND SPOT MONITORING (BSM) CONTROL MODULE].)

• Is the same DTC displayed?

Yes

Repeat the inspection from Step 1.

• If the malfunction recurs, replace the blind spot monitoring (BSM) control module.

  (See BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION.)

Go to the next step.

No

Go to the next step.

6

• Are any other DTCs displayed?

Yes

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

(See DTC TABLE [BLIND SPOT MONITORING (BSM) CONTROL MODULE].)

No

DTC troubleshooting completed.