DTC B1178:11 [BCM]

id0902f5069200


4SD

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 and release actuator connector or terminal malfunction
•  Trunk lid latch switch malfunction
•  BCM connector or terminal malfunction
•  Short to ground in wiring harness between trunk lid latch and release actuator terminal C and BCM terminal 2AC
•  BCM malfunction

Diagnostic Procedure

Step

Inspection

Action
1
VERIFY BCM DTCs AGAIN
•  Clear the DTC for the BCM using the M-MDS.
•  Open/close the trunk.
•  Retrieve the BCM DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Go to the next step.
No
Go to Step 7.
2
INSPECT TRUNK LID LATCH AND RELEASE ACTUATOR CONNECTOR CONDITION
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect the trunk lid latch and release actuator 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 TRUNK LID LATCH SWITCH
•  Inspect the trunk lid latch switch.
•  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
INSPECT BCM CONNECTOR CONDITION
•  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
INSPECT TRUNK LID LATCH SWITCH CIRCUIT FOR SHORT TO GROUND
•  Verify that the trunk lid latch and release actuator and BCM connectors are disconnected.
•  Inspect for continuity between trunk lid latch and release actuator terminal C (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 and release actuator terminal C 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
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Always reconnect all disconnected connectors.
•  Connect the negative battery cable.
•  Clear the DTC for the BCM using the M-MDS.
•  Open/close the trunk.
•  Retrieve the BCM DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the BCM.
Go to the next step.
No
Go to the next step.
7
VERIFY IF OTHER DTCs DISPLAYED
•  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.


5HB

Description

Liftgate latch switch circuit malfunction
Detection condition
•  BCM detects short to ground in liftgate latch switch circuit with the liftgate closed (liftgate latch switch off).
Fail-safe
Not applicable
Possible cause
•  Liftgate latch and lock actuator connector or terminal malfunction
•  Liftgate latch switch malfunction
•  BCM connector or terminal malfunction
•  Short to ground in wiring harness between liftgate latch and lock actuator terminal C and BCM terminal 2AC
•  BCM malfunction

Diagnostic Procedure

Step

Inspection

Action
1
VERIFY BCM DTCs AGAIN
•  Clear the DTC for the BCM using the M-MDS.
•  Open/close the liftgate.
•  Retrieve the BCM DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Go to the next step.
No
Go to Step 7.
2
INSPECT LIFTGATE LATCH AND LOCK ACTUATOR CONNECTOR CONDITION
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect the liftgate latch and lock actuator 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 LIFTGATE LATCH SWITCH
•  Inspect the liftgate latch switch.
•  Is the liftgate latch switch normal?
Yes
Go to the next step.
No
Replace the liftgate latch and lock actuator, then go to Step 6.
(See LIFTGATE LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)
4
INSPECT BCM CONNECTOR CONDITION
•  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
INSPECT LIFTGATE LATCH SWITCH CIRCUIT FOR SHORT TO GROUND
•  Verify that the liftgate latch and lock actuator and BCM connectors are disconnected.
•  Inspect for continuity between liftgate latch and lock actuator terminal C (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 liftgate latch and lock actuator terminal C 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
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Always reconnect all disconnected connectors.
•  Connect the negative battery cable.
•  Clear the DTC for the BCM using the M-MDS.
•  Open/close the liftgate.
•  Retrieve the BCM DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the BCM.
Go to the next step.
No
Go to the next step.
7
VERIFY IF OTHER DTCs DISPLAYED
•  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.