Inspection Procedure

1. Disconnect the A7 switch connector.
2. Measure the resistance of the wire harness side connector.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   4 - Body ground	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

Fig 1: Identifying Transmission Control Switch Connector Terminal

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OK: Go to Next Step 

1. Measure the resistance of the switch.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Switch Condition	Specified Condition
   2 - 4	Continuously press transmission control switch	Below 1 Ω
   2 - 4	Release transmission control switch	10 kΩ or higher

NG: REPLACE TRANSMISSION CONTROL SWITCH 

Fig 2: Inspecting Transmission Control Switch (O/D Main Switch)

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OK: Go to Next Step 

1. Disconnect the E4 ECM connector.
2. Measure the resistance of the wire harness side connector.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Switch Condition	Specified Condition
   E4-6 (ODMS) - Body ground	Continuously press transmission control switch	Below 1 Ω
   E4-6 (ODMS) - Body ground	Release transmission control switch	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

Fig 3: Disconnecting E4 ECM Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE