DTC B1178:11 [BCM]


id0902f5340900


4SD

DESCRIPTION

Trunk lid latch switch circuit malfunction

DETECTION CONDITION
•  Short to ground in the trunk lid latch switch circuit with the trunk closed (trunk lid latch switch off).
POSSIBLE CAUSE
•  Trunk lid latch and release actuator connector or terminals malfunction
•  Trunk lid latch switch malfunction
•  BCM connector or terminals malfunction
•  Short to ground in wiring harness between trunk lid latch and release actuator terminal C and BCM terminal 6F
•  BCM malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION

1
CONFIRM BCM DTC
•  Clear the DTC using the M-MDS.
•  Perform the BCM DTC inspection using the M-MDS.
•  Is the same DTC present?
Yes
Go to the next step.
No
Go to Step 7.
2
INSPECT TRUNK LID LATCH AND RELEASE ACTUATOR CONNECTOR AND TERMINALS
•  Switch the ignition to off.
•  Disconnect the trunk lid latch and release actuator connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 6.
No
Go to the next step.
3
INSPECT TRUNK LID LATCH SWITCH
•  Inspect the trunk lid latch switch.
•  Is there any malfunction?
Yes
Replace the trunk lid latch and release actuator, then go to Step 6.
No
Go to the next step.
4
INSPECT BCM CONNECTOR AND TERMINALS
•  Disconnect the BCM connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 6.
No
Go to the next step.
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-side) and body ground.
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to ground, then go to the next step.
No
Go to the next step.
6
VERIFY TROUBLESHOOTING COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC using the M-MDS.
•  Perform the BCM DTC inspection using the M-MDS.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
Go to the next step.
No
Go to the next step.
7
VERIFY THAT NO OTHER DTCs ARE PRESENT
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
DTC troubleshooting completed.


5HB

DESCRIPTION

Liftgate latch switch circuit malfunction

DETECTION CONDITION
•  Short to ground in the liftgate latch switch circuit with the liftgate closed (liftgate latch switch off).
POSSIBLE CAUSE
•  Liftgate latch and lock actuator connector or terminals malfunction
•  Liftgate latch switch malfunction
•  BCM connector or terminals malfunction
•  Short to ground in wiring harness between liftgate latch and lock actuator terminal C and BCM terminal 6F
•  BCM malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION

1
CONFIRM BCM DTC
•  Clear the DTC using the M-MDS.
•  Perform the BCM DTC inspection using the M-MDS.
•  Is the same DTC present?
Yes
Go to the next step.
No
Go to Step 7.
2
INSPECT LIFTGATE LATCH AND LOCK ACTUATOR CONNECTOR AND TERMINALS
•  Switch the ignition to off.
•  Disconnect the liftgate latch and lock actuator connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 6.
No
Go to the next step.
3
INSPECT LIFTGATE LATCH SWITCH
•  Inspect the liftgate latch switch.
•  Is there any malfunction?
Yes
Replace the liftgate latch and lock actuator, then go to Step 6.
No
Go to the next step.
4
INSPECT BCM CONNECTOR AND TERMINALS
•  Disconnect the BCM connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 6.
No
Go to the next step.
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-side) and body ground.
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to ground, then go to the next step.
No
Go to the next step.
6
VERIFY TROUBLESHOOTING COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Clear the DTC using the M-MDS.
•  Perform the BCM DTC inspection using the M-MDS.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
Go to the next step.
No
Go to the next step.
7
VERIFY THAT NO OTHER DTCs ARE PRESENT
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
DTC troubleshooting completed.