Rear Side Switch Module LIN Communication Malfunction: Procedure

1. Clear the DTC. Refer to DTC CHECK / CLEAR .

NEXT: Go to next step 

1. Check for DTC. Refer to DTC CHECK / CLEAR .
   RESULT
   
   

   Result	Proceed to
   DTC U0211, U0246, U1130 and U1131 output occurs	A
   DTC U0211, U0246, U1130 or U1131 output occurs	B
   No DTC output occurs	C

C → See step   13 

B → See step   12 

A: Go to next step 

1. Disconnect the z54*1 or S15*2 module switch connector.
   • *1: except 4-Passenger with Ottoman
   • *2: for 4-Passenger with Ottoman
   Fig 1: Identifying Rear Power Seat Module Switch & Position Control ECU LH Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the f39 ECU connector.
3. Measure the resistance and voltage according to the value(s) in the table below.

   Standard resistance

   except 4-Passenger with Ottoman 

   for 4-Passenger with Ottoman 

   Tester Connection	Condition	Specified Condition
   z54-6 (LIN) - f39-19 (LIN)	Always	Below 1 Ω
   z54-6 (LIN) or f39-19 (LIN) - Body ground	Always	10 kΩ or higher

   Tester Connection	Condition	Specified Condition
   S15-3 (LIN) - f39-19 (LIN)	Always	Below 1 Ω
   S15-3 (LIN) or f39-19 (LIN) - Body ground	Always	10 kΩ or higher

   Standard voltage

   except 4-Passenger with Ottoman 

   for 4-Passenger with Ottoman 

   Tester Connection	Condition	Specified Condition
   z54-6 (LIN) or f39-19 (LIN) - Body ground	Always	Below 1 V

   Tester Connection	Condition	Specified Condition
   S15-3 (LIN) or f39-19 (LIN) - Body ground	Always	Below 1 V

   RESULT
   
   

   Result	Proceed to
   NG	A
   OK (for 4-passenger with Ottoman)	B
   OK (for 5-passenger with Ottoman)	C
   OK (for Power Seat)	D
   OK (Fixed Seat Type)	E

E → See step   27 

D → See step   26 

C → See step   23 

B → See step   14 

A: Go to next step 

1. Reconnect the z54*1 or S15*2 module switch connectors.
   • *1: except 4-Passenger with Ottoman
   • *2: for 4-Passenger with Ottoman
2. Clear the DTC. Refer to DTC CHECK / CLEAR .

NEXT: Go to next step 

1. Disconnect the f39 ECU connector.
2. Recheck for DTC. Refer to DTC CHECK / CLEAR .
   RESULT
   
   

   Result	Proceed to
   DTC U0211 ,U0246, U1130 and U1131 output occurs	A
   DTC U0211 output occurs (except Ottoman)	B
   DTC U0211 output occurs (for Ottoman)	C

C → See step   22 

B → See step   15 

A: Go to next step 

1. Reconnect the f39 ECU connector.
2. Clear the DTC. Refer to DTC CHECK / CLEAR .

NEXT: Go to next step 

1. Disconnect the f43 ECU connector.
2. Recheck for DTC. Refer to DTC CHECK / CLEAR .
   RESULT
   
   

   Result	Proceed to
   DTC U0211, U0246, U1130 and U1131 output occurs	A
   DTC U0246 output occurs (except Ottoman)	B
   DTC U0246 output occurs (for Ottoman)	C

C → See step   21 

B → See step   16 

A: Go to next step 

1. Reconnect the f43 ECU connector.
2. Clear the DTC. Refer to DTC CHECK / CLEAR .

NEXT: Go to next step 

1. Disconnect the f8 ECU connector.
2. Recheck for DTC. Refer to DTC CHECK / CLEAR .
   RESULT
   
   

   Result	Proceed to
   DTC U0211, U0246, U1130 and U1131 output occurs	A
   DTC U1130 output occurs (for Power Seat)	B
   DTC U1130 output occurs (for Ottoman)	C
   DTC U1130 output occurs (for Fixed Seat Type)	D

D → See step   24 

C → See step   20 

B → See step   17 

A: Go to next step 

1. Reconnect the f8 ECU connector.
2. Clear the DTC. Refer to DTC CHECK / CLEAR .

NEXT: Go to next step 

1. Disconnect the f13*1 or f28*2 ECU connector.
   • *1: w/ Seat Heater System
   • *2: w/ Climate Control Seat System
2. Recheck for DTC. Refer to DTC CHECK / CLEAR .
   RESULT
   
   

   Result	Proceed to
   DTC U0211, U0246, U1130 and U1131 output occurs	A
   DTC U1131 output occurs (for Power Seat)	B
   DTC U1131 output occurs (for Ottoman)	C
   DTC U1131 output occurs (for Fixed Seat Type)	D

D → See step   25 

C → See step   19 

B → See step   18 

A → REPAIR OR REPLACE HARNESS OR CONNECTOR