DTC B1176:11 [REAR BODY CONTROL MODULE (RBCM)]


id0902p4014300

Description

Front door latch switch (passenger's side) circuit malfunction

Detection condition
•  Rear body control module (RBCM) detects a short to ground in the front door latch switch (passenger's side) circuit with the front door (passenger's side) closed (front door latch switch (passenger's side) off).
Fail-safe function
Not applicable
Possible cause
•  Front door latch and lock actuator (passenger's side) connector or terminal malfunction
•  Front door latch switch (passenger's side) malfunction
•  Rear body control module (RBCM) connector or terminal malfunction
•  Short to ground in wiring harness between the following terminals:
―  Rear body control module (RBCM) terminal 3U—Front door latch and lock actuator (RH) terminal B (L.H.D.)
―  Rear body control module (RBCM) terminal 3U—Front door latch and lock actuator (LH) terminal L (R.H.D.)
•  Rear body control module (RBCM) malfunction

Diagnostic Procedure

Step

Inspection

Action

1
VERIFY REAR BODY CONTROL MODULE (RBCM) DTCs AGAIN
•  Clear the DTC for the rear body control module (RBCM) using the M-MDS.
•  Retrieve the rear body control module (RBCM) DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Go to the next step.
No
Go to Step 7.
2
INSPECT FRONT DOOR LATCH AND LOCK ACTUATOR (PASSENGER'S SIDE) CONNECTOR CONDITION
•  Switch the ignition off.
•  Disconnect the front door latch and lock actuator (passenger's side) 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 FRONT DOOR LATCH SWITCH (PASSENGER'S SIDE)
•  Inspect the front door latch switch (passenger's side).
•  Is the front door latch switch (passenger's side) normal?
Yes
Go to the next step.
No
Replace the front door latch and lock actuator (passenger's side), then go to Step 6.
4
INSPECT REAR BODY CONTROL MODULE (RBCM) CONNECTOR CONDITION
•  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 6.
5
INSPECT FOR SHORT TO GROUND IN FRONT DOOR LATCH SWITCH (PASSENGER'S SIDE) CIRCUIT
•  Verify that the rear body control module (RBCM) and front door latch and lock actuator (passenger's side) connectors are disconnected.
•  Inspect for continuity between the following terminal (wiring harness-side) and body ground:
―  Front door latch and lock actuator (RH) terminal B (L.H.D.)
―  Front door latch and lock actuator (LH) terminal L (R.H.D.)
•  Is there continuity?
Yes
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
•  Rear body control module (RBCM) terminal 3U—Front door latch and lock actuator (RH) terminal B (L.H.D.)
•  Rear body control module (RBCM) terminal 3U—Front door latch and lock actuator (LH) terminal L (R.H.D.)
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.
•  Clear the DTC for the rear body control module (RBCM) using the M-MDS.
•  Retrieve the rear body control module (RBCM) DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the rear body control module (RBCM).
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.
No
DTC troubleshooting completed.