Heater Control Panel Power Source Circuit: Procedure

1. Disconnect the E10 control connector.
   Fig 1: Identifying Harness And Connector (IG+ Air Conditioning Control Assembly - Battery)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in the table below.

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   E10-2 (IG+) - Body ground	Ignition switch ON	11 to 14 V
   E10-2 (IG+) - Body ground	Ignition switch off	Below 1 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Measure the resistance according to the value(s) in the table below.
   Fig 2: Identifying E10 Air Conditioning Control (Front) Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard resistance

   Tester Connection	Condition	Specified Condition
   E10-10 (GND) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   3