Inspection Procedure

1. Disconnect the T21 ECU connector.
2. Disconnect the P1 switch connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TERMINALS RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   T21-27 (REV) - P1-1	Below 1 Ω
   T21-27 (REV) - Body ground	10 kΩ or higher

Fig 1: Identifying T21 ECU Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go To Next Step 

1. Disconnect the T22 ECU connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TERMINALS RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   T22-8 (GND1) - Body ground	Below 1 Ω

Fig 2: Identifying T22 ECU Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go To Next Step 

1. Measure the voltage according to the value(s) in the table below.

   Standard voltage 

   TERMINALS VOLTAGE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   T21-27 (REV) - Body ground	Ignition switch ON, shift lever R position	10 to 14 V

Fig 3: Identifying T21 ECU Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: INSPECT PARK / NEUTRAL POSITION SWITCH 

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