Inspection Procedure

1. Remove the RR MPX-B2 fuse from the luggage room junction block.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTOR SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   RR MPX-B2 fuse	Always	Below 1 Ω

NG: REPLACE FUSE 

OK: Go to Next Step 

1. Disconnect the z54*1 or S15*2 rear power seat module connector
2. Measure the resistance and voltage according to the value(s) in the table below

   Standard resistance 

   except Ottoman 

   TESTER CONNECTOR SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   z54-3 (E) - Body ground	Always	Below 1 Ω

   for Ottoman 

   TESTER CONNECTOR SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   S15-5 (E) - Body ground	Always	Below 1 Ω

   Standard voltage 

   except Ottoman 

   TESTER CONNECTOR SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   Z54-11 (B) - Body ground	Always	11 to 14 V

   for Ottoman 

   TESTER CONNECTOR SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   S15-6 (B) - Body ground	Always	11 to 14 V

   Fig 1: Identifying Terminals Of Z54 Or S15 Rear Power Seat Module Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to Next Step 

1. Disconnect the z54*1 or S15*2 rear power seat module connector
2. Disconnect the L76 air conditioning amplifier connector.
3. Measure the resistance according to the value(s) in the table below

   Standard resistance 

   except Ottoman 

   TESTER CONNECTOR SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   L76-21 (LIN3) - Z54-14 (RCLN)	Always	Below 1 Ω
   Z54-14 (RCLN) - Body ground	Always	10 kΩ or higher
   L76-21 (LIN3) - Body ground

   for Ottoman 

   TESTER CONNECTOR SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   L76-21 (LIN3) - S15-13 (RCLN)	Always	Below 1 Ω
   S15-13 (RCLN) - Body ground	Always	10 kΩ or higher
   L76-21 (LIN3) - Body ground

   Fig 2: Identifying Terminals Of Z54 Or S15 Rear Power Seat Module Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to Next Step 

1. Replace the rear power seat module with a new or properly functioning one (see REMOVAL )
2. Operate the rear power seat module to check that it functions properly

   OK: Rear power seat module function operates normally. 

NG: REPLACE AIR CONDITIONING AMPLIFIER  (See REMOVAL  )

OK: END (REAR POWER SEAT MODULE IS DEFECTIVE)