Description

Trunk lid latch switch circuit malfunction

Detection condition

• BCM detects short to ground in trunk lid latch switch circuit with the trunk closed (trunk lid latch switch off).

Fail-safe

Not applicable

Possible cause

• Trunk lid latch switch connector or terminal malfunction

• Trunk lid latch switch malfunction

• BCM connector or terminal malfunction

• Short to ground in wiring harness between trunk lid latch switch terminal A and BCM terminal 2AC

• BCM malfunction

Step

Inspection

Action

1

• Clear the DTC for the BCM using the M-MDS.

  (See CLEARING DTC [BCM].)

• Open/close the trunk.

• Retrieve the BCM DTCs using the M-MDS.

  (See DTC INSPECTION [BCM].)

• Is the same DTC displayed?

Yes

Go to the next step.

No

Go to Step 7.

2

• Switch the ignition off.

• Disconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

• Disconnect the trunk lid latch switch 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 6.

3

• Inspect the trunk lid latch switch.

  (See TRUNK LID OPENER SWITCH INSPECTION.)

• Is the trunk lid latch switch normal?

Yes

Go to the next step.

No

Replace the trunk lid latch and release actuator, then go to Step 6.

(See TRUNK LID LATCH AND RELEASE ACTUATOR REMOVAL/INSTALLATION.)

4

• Disconnect the BCM 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 6.

5

• Verify that the trunk lid latch switch and BCM connectors are disconnected.

• Inspect for continuity between trunk lid latch switch terminal A (wiring harness) and body ground.

• Is there continuity?

Yes

Refer to the wiring diagram and verify whether or not there is a common connector between trunk lid latch switch terminal A and BCM terminal 2AC.

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 the next step.

No

Go to the next step.

6

• Always reconnect all disconnected connectors.

• Connect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)

• Clear the DTC for the BCM using the M-MDS.

  (See CLEARING DTC [BCM].)

• Open/close the trunk.

• Retrieve the BCM DTCs using the M-MDS.

  (See DTC INSPECTION [BCM].)

• Is the same DTC displayed?

Yes

Repeat the inspection from Step 1.

• If the malfunction recurs, replace the BCM.

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

Go to the next step.

No

Go to the next step.

7

• Are any other DTCs displayed?

Yes

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

(See DTC TABLE [BCM].)

No

DTC troubleshooting completed.