Inspection Procedure

PERFORM ACTIVE TEST BY TECHSTREAM (POWER SEAT MOTOR FUNCTION)

Select the Active Test, use the Techstream to generate a control command, and then check the power seat motor function.

Rear Right Seat

REAR RIGHT SEAT ACTIVE TEST REFERENCE CHART

Tester Display	Test Part	Control Range
Seat Reclining	Seat reclining operation	FRONT/REAR

OK: Motor operates normally.

NG: Go to step 6

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU - OTTOMAN RECLINING SENSOR AND BODY GROUND)

Disconnect the f5 ECU connector.
Disconnect the R15 sensor connector.

Measure the resistance according to the values in the table below.

Standard Resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
f5-4 (PVCC) - R15-3 (PVCC)	Always	Below 1 Ω
f5-2 (SSRR) - R15-1 (SSRR)	Always	Below 1 Ω
f5-12 (SGND) - R15-2 (GND)	Always	Below 1 Ω
f5-4 (PVCC) - Body ground	Always	10 kΩ or higher
f5-2 (SSRR) - Body ground	Always	10 kΩ or higher
f5-12 (SGND) - Body ground	Always	10 kΩ or higher

Fig 1: Identifying f5 ECU And R15 Sensor Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

CHECK REAR SEAT RECLINING ADJUSTER ASSEMBLY RH (POSITION CONTROL SENSOR)

Disconnect the R15 sensor connector.

Measure the voltage according to the values in the table below.

Standard Voltage

VOLTAGE SPECIFIED CONDITIONS

Tester Connection	Switch Condition	Specified Condition
R15-3 (PVCC) - R15-2 (GND)	Reclining switch signal ON	7.2 to 8.8 V

Fig 2: Identifying R15 Sensor Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE POSITION CONTROL ECU (See DISASSEMBLY )

OK: Go to Next Step

CHECK REAR SEAT RECLINING ADJUSTER ASSEMBLY RH (POSITION CONTROL SENSOR)

Reconnect the R15 sensor connector.

Measure the voltage according to the value in the table below.

Standard Voltage

VOLTAGE SPECIFIED CONDITIONS

Tester Connection	Switch Condition	Specified Condition
R15-1 (SSRR) - Body ground	Reclining switch signal ON	0 to 8V

Fig 3: Identifying R15 Sensor Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE REAR SEAT RECLINING ADJUSTER ASSEMBLY RH (See DISASSEMBLY )

OK: Go to Next Step

CHECK FOR DTC
1. Clear the DTC (see DTC CHECK / CLEAR ).
2. Recheck the DTC.
  OK: DTC B2651 is not output.
NG: REPLACE POSITION CONTROL ECU (See DISASSEMBLY )

OK: END (SYSTEM RETURN TO NORMAL)

CHECK REAR SEAT RECLINING ADJUSTER ASSEMBLY RH (POWER SEAT MOTOR)

Check operation of the power seat motor (reclining motor).

Check if the seat reclining adjuster moves smoothly when the battery is connected to the reclining motor connector terminals.

RECLINING MOTOR OPERATION CHART

Measurement Condition	Operational Direction
Battery positive (+) → 2 Battery negative (-) → 1	Forward
Battery positive (+) → 1 Battery negative (-) → 2	Backward

Fig 4: Identifying Power Seat Motor Connector Terminals

NG: REPLACE REAR SEAT RECLINING ADJUSTER ASSEMBLY RH (See DISASSEMBLY )

OK: Go to Next Step

CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU - OTTOMAN RECLINING MOTOR)

Disconnect the f4 ECU connector.
Disconnect the R14 motor connector.

Measure the resistance according to the values in the table below.

Standard Resistance

RESISTANCE SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
f4-2 (RCL+) - R14-2	Always	Below 1 Ω
f4-7 (RCL-) - R14-1	Always	Below 1 Ω

Fig 5: Identifying f4 ECU And R14 Motor Connector Terminals

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE POSITION CONTROL ECU (See DISASSEMBLY )