DTC B253C: Package Tray Switch No. 3 Abnormal Operation: Procedure

1. Check that the wire harness of the No. 3 main package tray switch has not been pinched by the body.
2. Disconnect the P60 connector.
   Fig 1: Identifying Package Tray Trim Bracket (No. 3 Main Package Tray Switch) & P60 Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *1

   Component without harness connected (Package Tray Trim Bracket)

   *2

   No. 3 Main Package Tray Switch

3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   2 (MP3) - 6 (MPE)	Switch pressed	Below 1 Ω
   2 (MP3) - 6 (MPE)	Switch not pressed	10 kΩ or higher
   2 (MP3) - Body ground	Always	10 kΩ or higher

NG → REPLACE PACKAGE TRAY TRIM BRACKET (NO. 3 MAIN PACKAGE TRAY SWITCH) 

OK: Go to next step 

1. Disconnect the P60 and P53 connectors.
   Fig 2: Identifying P60 & P53 Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   P60-2 (MP3) - P53-7 (MP3)	Always	Below 1 Ω
   P60-2 (MP3) - Body ground	Always	10 kΩ or higher
   P60-6 (MPE) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Package Tray Trim Bracket)
   *2	Front view of wire harness connector (to Sliding Roof Control ECU Assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → REPLACE SLIDING ROOF CONTROL ECU ASSEMBLY