Inspection Procedure

1. Delete the DTC (See DIAGNOSIS SYSTEM  ).
2. Check for DTC B2285 and B2785.

   Result 

   RESULT REFERENCE
   
   

   Display (DTC output)	Proceed to
   "DTC B2287" only	A
   "DTC B2287" and "DTC B2785" are output	B
   No DTC Is output.	C

   HINT:

   If DTC B2785 is output, perform troubleshooting for DTC B2785 first (See DTC B2785 COMMUNICATION MALFUNCTION BETWEEN ECUS CONNECTED BY LIN; DTC B2786 NO RESPONSE FROM STEERING LOCK ECU; DTC B2789 NO RESPONSE FROM ID BOX ).

B: GO TO DTC CHART 

C: CHECK INTERMITTENT PROBLEMS 

A: Go to Next Step 

1. Check that the connectors are securely connected and the terminals are not deformed or loose.

   OK: 

   The connectors are securely connected and the terminals are not deformed or loose. 

NG: REPAIR OR REPLACE CONNECTORS 

OK: Go to Next Step 

1. Disconnect the J55 ECU connector.
2. Disconnect the P33 ECU connector.
3. Measure the resistance according to the value (s) in the table below.

   Standard resistance 

   STANDARD RESISTANCE SPECIFICATION
   
   

   Tester Connection (Symbols)	Condition	Specified Condition
   J55-30 (LIN1) - P33-10 (LIN)	Always	Below 1 Ω
   J55-30 (LIN1) or P33-10 (LIN) - Body ground	Always	10 kΩ or higher

Fig 1: Identifying J55 Power Source Control ECU And P33 Certification ECU Connectors
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE POWER SOURCE CONTROL ECU 

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR