DTC B131C:13 [REAR ONE-TOUCH WALK-IN CONTROL MODULE]

id0902t1991100

Description

Walk-in actuator (LH) circuit malfunction
Detection condition
•  Rear one-touch walk-in control module detects an open circuit or short to ground in the walk-in actuator (LH) circuit.
Fail-safe
Not applicable
Possible cause
•  Walk-in actuator (LH) connector or terminal malfunction
•  Rear one-touch walk-in control module connector or terminal malfunction
•  Short to ground in wiring harness between the following circuits:
―  Rear one-touch walk-in control module terminal 3E―Walk-in actuator (LH) terminal B
―  Rear one-touch walk-in control module terminal 3F―Walk-in actuator (LH) terminal A
•  Open circuit in wiring harness between the following circuits:
―  Rear one-touch walk-in control module terminal 3E―Walk-in actuator (LH) terminal B
―  Rear one-touch walk-in control module terminal 3F―Walk-in actuator (LH) terminal A
•  Walk-in actuator (LH) malfunction
•  Rear one-touch walk-in control module malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION
1
INSPECT WALK-IN ACTUATOR (LH) CONNECTOR CONDITION
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the walk-in actuator (LH) 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.
2
INSPECT REAR ONE-TOUCH WALK-IN CONTROL MODULE CONNECTOR CONDITION
•  Disconnect the rear one-touch walk-in control module 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
INSPECT WALK-IN ACTUATOR (LH) CIRCUIT FOR SHORT TO GROUND
•  Verify that the walk-in actuator (LH) and rear one-touch walk-in control module connectors are disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side) and body ground:
―  Rear one-touch walk-in control module terminal 3E
―  Rear one-touch walk-in control module terminal 3F
•  Is there continuity?
Yes
Refer to the wiring diagram and verify whether or not there is a common connector between the following circuits:
•  Rear one-touch walk-in control module terminal 3E―Walk-in actuator (LH) terminal B
•  Rear one-touch walk-in control module terminal 3F―Walk-in actuator (LH) 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 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 Step 7.
No
Go to the next step.
4
INSPECT WALK-IN ACTUATOR (LH) CIRCUIT FOR OPEN CIRCUIT
•  Verify that the walk-in actuator (LH) and rear one-touch walk-in control module connectors are disconnected.
•  Inspect for continuity between the following circuits (wiring harness-side):
―  Rear one-touch walk-in control module terminal 3E―Walk-in actuator (LH) terminal B
―  Rear one-touch walk-in control module terminal 3F―Walk-in actuator (LH) terminal A
•  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 the following circuits:
•  Rear one-touch walk-in control module terminal 3E―Walk-in actuator (LH) terminal B
•  Rear one-touch walk-in control module terminal 3F―Walk-in actuator (LH) 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 Step 7.
5
INSPECT WALK-IN ACTUATOR (LH)
•  Inspect the walk-in actuator (LH).
•  Is the walk-in actuator (LH) normal?
Yes
Go to the next step.
No
Replace the second-row seat (LH), then go to the Step 7.
(See SECOND-ROW SEAT REMOVAL/INSTALLATION.)
6
INSPECT REAR ONE-TOUCH WALK-IN CONTROL MODULE
•  Inspect the rear one-touch walk-in control module.
•  Is the rear one-touch walk-in control module normal?
Yes
Go to the next step.
No
Replace the rear one-touch walk-in control module, then go to the next step.
(See REAR ONE-TOUCH WALK-IN CONTROL MODULE REMOVAL/INSTALLATION.)
7
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Reconnect all the disconnected connectors with the negative battery terminal disconnected.
•  Connect the negative battery terminal.
•  Clear the DTC for the rear one-touch walk-in control module using the M-MDS.
•  Retrieve the rear one-touch walk-in control module DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the rear one-touch walk-in control module.
Go to the next step.
No
Go to the next step.
8
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 [REAR ONE-TOUCH WALK-IN CONTROL MODULE].)
No
DTC troubleshooting completed.