Inspection Procedure

1. Disconnect the H33 connector from the HV control ECU.
2. Disconnect the C18 w/ motor compressor assembly connector.
3. Measure the voltage according to the value(s) in the table below when the ignition switch is in the ON position.

   Standard Voltage 

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   CLK (H33-14) - Body ground	Below 1 V
   ITE (H33-15) - Body ground	Below 1 V
   ETI (H33-16) - Body ground	Below 1 V
   STB (H33-18) - Body ground	Below 1 V

4. Turn the ignition switch off.
5. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for open) 

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   Tester Connection HV Control ECU - w/ motor compressor assembly	Specified Condition
   CLK (H33-14) - CLK (C18-1)	Below 1 Ω
   ITE (H33-15) - TOECU (C18-2)	Below 1 Ω
   ETI (H33-16) - TOINV (C18-3)	Below 1 Ω.
   STB (H33-18) - STB (C18-4)	Below 1 Ω

   Fig 1: Disconnecting H33 Connector From HV Control ECU

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Resistance (Check for short) 

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE W/ MOTOR COMPRESSOR ASSEMBLY