Description

LIN communication error

Detection condition

• LIN bus communication line malfunction detected for 1 s or more

Fail-safe function

Not applicable

Possible cause

• Malfunction in LIN bus communication line

• Auto light sensor/rain sensor terminal A—Front body control module (FBCM) terminal 2G

• Front body control module (FBCM) malfunction

Step

Inspection

Action

1

• Clear the DTC for the front body control module (FBCM) using the M-MDS.

  (See CLEARING DTC [FRONT BODY CONTROL MODULE (FBCM)].)

• Switch the ignition ON (engine off or on) and wait for 1 s or more.

• Retrieve the front body control module (FBCM) DTCs using the M-MDS.

  (See DTC INSPECTION [FRONT BODY CONTROL MODULE (FBCM)].)

• Is the same DTC displayed?

Yes

LIN communication line can be considered the cause.

• Refer to the wiring diagram and verify whether or not there is a common connector between auto light sensor/rain sensor terminal A and front body control module (FBCM) terminal 2G.

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 malfunction.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness.

• Go to the next step.

No

Go to Step 3.

2

• Clear the DTC for the front body control module (FBCM) using the M-MDS.

  (See CLEARING DTC [FRONT BODY CONTROL MODULE (FBCM)].)

• Switch the ignition ON (engine off or on) and wait for 1 s or more.

• Retrieve the front body control module (FBCM) DTCs using the M-MDS.

  (See DTC INSPECTION [FRONT BODY CONTROL MODULE (FBCM)].)

• Is the same DTC displayed?

Yes

Repeat the inspection from Step 1.

• If the malfunction recurs, replace the front body control module (FBCM).

  (See FRONT BODY CONTROL MODULE (FBCM) REMOVAL/INSTALLATION.)

Go to the next step.

No

Go to the next step.

3

• Are any other DTCs displayed?

Yes

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

(See DTC TABLE [FRONT BODY CONTROL MODULE (FBCM)].)

No

DTC troubleshooting completed.