Diagnostic Procedure

DTC B139D:24 [REAR ONE-TOUCH WALK-IN CONTROL MODULE] DIAGNOSTIC PROCEDURE

Step	INSPECTION		Action
1	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.
1		No	Repair or replace the connector, then go to Step 5.
2	INSPECT WALK-IN SWITCH (LH) CIRCUIT FOR SHORT TO GROUND Verify that the rear one-touch walk-in control module connector is disconnected. Inspect for continuity between the rear one-touch walk-in control module terminal 2K (wiring harness-side) and body ground. Is there continuity?	Yes	Refer to appropriate wiring diagram and verify whether or not there is a common connector between rear one-touch walk-- in control module terminal 2K and walk-in switch (LH). 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 5.
2		No	Go to the next step.
3	INSPECT WALK-IN SWITCH (LH) Inspect the walk-in switch (LH). (See WALK-IN SWITCH INSPECTION .) Is the walk-in switch (LH) normal?	Yes	Go to the next step.
3		No	Replace the second-row seat (LH), then go to the Step 5. (See SECOND-ROW SEAT REMOVAL/INSTALLATION .)
4	INSPECT REAR ONE-TOUCH WALK-IN CONTROL MODULE Inspect the rear one-touch walk-in control module. (See REAR ONE-TOUCH WALK-IN CONTROL MODULE INSPECTION .) Is the rear one-touch walk-in control module normal?	Yes	Go to the next step.
4		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 .)
5	VERIFY THAT REPAIRS HAVE BEEN COMPLETED Reconnect all the disconnected connectors with the negative battery terminal disconnected. Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .) Clear the DTC for the rear one-touch walk-- in control module using the M-MDS. (See CLEARING DTC [REAR ONE-TOUCH WALK-IN CONTROL MODULE] .) Retrieve the rear one-touch walk-in control module DTCs using the M-MDS. (See DTC INSPECTION [REAR ONE-TOUCH WALK-IN CONTROL MODULE] .) 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. (See REAR ONE-TOUCH WALK-IN CONTROL MODULE REMOVAL/INSTALLATION .) Go to the next step.
5		No	Go to the next step.
6	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] .)
6		No	DTC troubleshooting completed.