Power Source Circuit: Wiring Diagram

1. Disconnect the T22 connector from the television camera ECU.
2. Measure the voltage according to the value(s) in the table below.

   Standard voltage 

   TERMINALS VOLTAGE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   T22-1 (+B) - Body ground	Always	10 to 14 V
   T22-5 (ACC) - Body ground	Ignition switch ACC	10 to 14 V
   T22-2 (IG) - Body ground	Ignition switch ON	10 to 14 V

Fig 2: Disconnecting T22 Connector From Television Camera ECU (1 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: Go To Next Step 

1. Disconnect the T22 connector from the television camera ECU.
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 3: Disconnecting T22 Connector From Television Camera ECU (2 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

OK: REPLACE TELEVISION CAMERA ECU