DTC B103E:12 [REAR POWER SEAT CONTROL MODULE (LH)]

id0902t2550000

Description	Walk-in actuator (LH) circuit/slide motor (LH) circuit malfunction
Detection condition	•  Rear power seat control module (LH) detects a short to power supply in the walk-in actuator (LH) circuit/slide motor (LH) circuit.
Fail-safe	•  Inhibits the rear power slide function from being driven. •  Inhibits the rear power walk-in operation seat back fold-down function from being driven. •  Inhibits the rear power walk-in return function from being driven.
Possible cause	•  Walk-in actuator (LH) connector or terminal malfunction •  Slide motor (LH) connector or terminal malfunction •  Rear power seat control module (LH) connector or terminal malfunction •  Short to power supply in wiring harness between the following terminals: ―  Rear power seat control module (LH) terminal 2C—Walk-in actuator (LH) terminal B ―  Rear power seat control module (LH) terminal 2D—Walk-in actuator (LH) terminal A ―  Rear power seat control module (LH) terminal 2A—Slide motor (LH) terminal B ―  Rear power seat control module (LH) terminal 2B—Slide motor (LH) terminal A •  Walk-in actuator (LH) malfunction •  Slide motor (LH) malfunction •  Rear power seat control module (LH) malfunction

Diagnostic Procedure

Step	Inspection		Action
1	INSPECT WALK-IN ACTUATOR (LH) CONNECTOR CONDITION •  Switch the ignition off. •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  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 and/or terminals, then go to Step 8.
2	INSPECT SLIDE MOTOR (LH) CONNECTOR CONDITION •  Disconnect the slide motor (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 and/or terminals, then go to Step 8.
3	INSPECT REAR POWER SEAT CONTROL MODULE (LH) CONNECTOR CONDITION •  Disconnect the rear power seat control module (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 and/or terminals, then go to Step 8.
4	INSPECT WALK-IN ACTUATOR (LH) CIRCUIT/SLIDE MOTOR (LH) CIRCUIT FOR SHORT TO POWER SUPPLY •  Verify that the slide motor (LH), walk-in actuator (LH), and rear power seat control module (LH) connectors are disconnected. •  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Switch the ignition ON (engine off or on). •  Measure the voltage at the following terminals (wiring harness-side): ―  Rear power seat control module (LH) terminal 2C ―  Rear power seat control module (LH) terminal 2D ―  Rear power seat control module (LH) terminal 2A ―  Rear power seat control module (LH) terminal 2B •  Is the voltage 0 V?	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 power seat control module (LH) terminal 2C—Walk-in actuator (LH) terminal B •  Rear power seat control module (LH) terminal 2D—Walk-in actuator (LH) terminal A •  Rear power seat control module (LH) terminal 2A—Slide motor (LH) terminal B •  Rear power seat control module (LH) terminal 2B—Slide motor (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 power supply. •  Repair or replace the malfunctioning part. If there is no common connector: •  Repair or replace the wiring harness which has a short to power supply. Go to Step 8.
5	INSPECT WALK-IN ACTUATOR (LH) •  Inspect the walk-in actuator (LH). (See WALK-IN ACTUATOR INSPECTION.) •  Is the part normal?	Yes	Go to the next step.
		No	Replace the second-row seat (LH), then go to Step 8. (See SECOND-ROW SEAT REMOVAL/INSTALLATION.)
6	INSPECT SLIDE MOTOR (LH) •  Inspect the slide motor (LH). (See SLIDE MOTOR INSPECTION.) •  Is the part normal?	Yes	Go to the next step.
		No	Replace the second-row seat (LH), then go to Step 8. (See SECOND-ROW SEAT REMOVAL/INSTALLATION.)
7	INSPECT REAR POWER SEAT CONTROL MODULE (LH) •  Inspect the rear power seat control module (LH). (See REAR POWER SEAT CONTROL MODULE (LH) INSPECTION.) •  Is the part normal?	Yes	Go to the next step.
		No	Replace the second-row seat (LH), then go to the next step. (See SECOND-ROW SEAT REMOVAL/INSTALLATION.)
8	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 power seat control module (LH) using the M-MDS. (See CLEARING DTC [REAR POWER SEAT CONTROL MODULE (LH)].) •  Retrieve the rear power seat control module (LH) DTCs using the M-MDS. (See DTC INSPECTION [REAR POWER SEAT CONTROL MODULE (LH)].) •  Is the same Pending DTC present?	Yes	Repeat the inspection from Step 1. •  If the malfunction recurs, replace the second-row seat (LH). (See SECOND-ROW SEAT REMOVAL/INSTALLATION.) Go to the next step.
		No	Go to the next step.
9	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 POWER SEAT CONTROL MODULE (LH)].)
		No	DTC troubleshooting completed.