DTC B10E7:12 [REAR POWER SEAT CONTROL MODULE (LH)]

id0902t2551300

Description	Rear power seat control module (LH) IG1 power supply circuit malfunction
Detection condition	•  Rear power seat control module (LH) detects a short to power supply in the IG1 power supply circuit with the ignition switched off.
Fail-safe	•  Inhibits the rear power walk-in operation function from being driven.
Possible cause	•  IG1 power supply circuit malfunction (Related DTCs are stored in the start stop unit) •  IG1 relay malfunction •  Rear power seat control module (LH) connector or terminal malfunction •  Short to power supply in wiring harness between IG1 relay terminal C and rear power seat control module (LH) terminal 1G •  Rear power seat control module (LH) malfunction

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY START STOP UNIT DTCs •  Retrieve the start stop unit DTCs using the M-MDS. (See DTC INSPECTION [START STOP UNIT].) •  Are any DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [START STOP UNIT].)
		No	Go to the next step.
2	INSPECT IG1 RELAY •  Switch the ignition off. •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Remove the IG1 relay. (See RELAY LOCATION.) •  Inspect the IG1 relay. (See RELAY INSPECTION.) •  Is the part normal?	Yes	Go to the next step.
		No	Replace the IG1 relay, then go to Step 6. (See RELAY LOCATION.)
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 6.
4	INSPECT IG1 RELAY CIRCUIT FOR SHORT TO POWER SUPPLY •  Verify that the rear power seat control module (LH) connector is disconnected. •  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Measure the voltage at the rear power seat control module (LH) terminal 1G (wiring harness-side). •  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 IG1 relay terminal C and rear power seat control module (LH) terminal 1G. 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 6.
5	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.)
6	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.
7	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.