Description

Hood latch switch circuit malfunction

Detection condition

• Rear body control module (RBCM) detects an open circuit in hood latch switch circuit.

Fail-safe function

Not applicable

Possible cause

• Hood latch switch connector or terminal malfunction

• Open circuit in wiring harness between hood latch switch terminal B and body ground

• Hood latch switch malfunction

• Rear body control module (RBCM) connector or terminal malfunction

• Open circuit in wiring harness between rear body control module (RBCM) terminal 3L and hood latch switch terminal A

• Rear body control module (RBCM) malfunction

Step

Inspection

Action

1

• Clear the DTC for the rear body control module (RBCM) using the M-MDS.

  (See CLEARING DTC [REAR BODY CONTROL MODULE (RBCM)].)

• Retrieve the rear body control module (RBCM) DTCs using the M-MDS.

  (See DTC INSPECTION [REAR BODY CONTROL MODULE (RBCM)].)

• Is the same DTC displayed?

Yes

Go to the next step.

No

Go to Step 8.

2

• Switch the ignition off.

• Disconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].)

• Disconnect the hood 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 7.

3

• Verify that the hood latch switch connector is disconnected.

• Inspect for continuity between hood latch switch terminal B (wiring harness-side) and body ground.

• Is there continuity?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify whether or not there is a common connector between hood latch switch terminal B and body ground.

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 an open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has an open circuit.

Go to Step 7.

4

• Inspect the hood latch switch.

  (See HOOD LATCH SWITCH INSPECTION.)

• Is the hood latch switch normal?

Yes

Go to the next step.

No

Replace the hood latch switch, then go to Step 7.

(See HOOD LATCH AND RELEASE LEVER REMOVAL/INSTALLATION.)

5

• Disconnect the rear body control module (RBCM) 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 7.

6

• Verify that the hood latch switch and rear body control module (RBCM) connectors are disconnected.

• Inspect for continuity between rear body control module (RBCM) terminal 3L (wiring harness-side) and hood latch switch terminal A (wiring harness-side).

• Is there continuity?

Yes

Go to the next step.

No

Refer to the wiring diagram and verify whether or not there is a common connector between rear body control module (RBCM) terminal 3L and hood latch switch terminal A.

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 an open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has an open circuit.

Go to the next step.

7

• Always reconnect all disconnected connectors.

• Reconnect the negative battery cable.

  (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.5].)

• Clear the DTC for the rear body control module (RBCM) using the M-MDS.

  (See CLEARING DTC [REAR BODY CONTROL MODULE (RBCM)].)

• Retrieve the rear body control module (RBCM) DTCs using the M-MDS.

  (See DTC INSPECTION [REAR BODY CONTROL MODULE (RBCM)].)

• Is the same DTC displayed?

Yes

Repeat the inspection from Step 1.

• If the malfunction recurs, replace the rear body control module (RBCM).

  (See REAR BODY CONTROL MODULE (RBCM) REMOVAL/INSTALLATION.)

Go to the next step.

No

Go to the next step.

8

• Are any other DTCs displayed?

Yes

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

(See DTC TABLE [REAR BODY CONTROL MODULE (RBCM)].)

No

DTC troubleshooting completed.