Terminals Of Ecu [10/2022 - ]

Fig 1: Check Air Conditioning Amplifier Assembly [10/2022 - ]

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the H62 air conditioning amplifier assembly connector.
2. Measure the voltage and resistance according to the value(s) in the table below.

   HINT: 

   Measure the values on the wire harness side with the connector disconnected.

   Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
   H62-6 (IG+) - H62-17 (GND)	Power source (IG)	Ignition switch ON	11 to 14 V
   H62-6 (IG+) - H62-17 (GND)	Power source (IG)	Ignition switch off	Below 1 V
   H62-5 (B) - H62-17 (GND)	Auxiliary battery power supply	Ignition switch off*1 Always*2	11 to 14 V
   H62-17 (GND) - Body ground	Ground	Always	Below 1 Ω

   1. *1: for HV Model
   2. *2: for Gasoline Model
3. Reconnect the H62 air conditioning amplifier assembly connector.
4. Measure the voltage according to the value(s) in the table below.

   Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
   H62-22 (FDEF) - H62-17 (GND)	Wiper Deicer signal	Ignition switch ON, Front wiper deicer switch off	11 to 14 V
   H62-22 (FDEF) - H62-17 (GND)	Wiper Deicer signal	Ignition switch ON, Front wiper deicer switch on	Below 2.2 V

Refer to TERMINALS OF ECU [10/2022 - 11/2023] , or refer to TERMINALS OF ECU [11/2023 - ]