Multi-media Interface ECU Power Source Circuit: Procedure

1. Disconnect the H15 multi-media interface ECU connector.

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2. Measure the voltage according to the value(s) in the table below.
   STANDARD VOLTAGE
   
   

   Tester Connection	Condition	Specified Condition
   H15-12 (+B) - H15-7 (GND)	Always	11 to 14 V
   H15-11 (ACC) - H15-7 (GND)	Engine switch on (ACC)	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Multi-media Interface ECU)

NG → See step   2 

OK → See step   3 

1. Disconnect the H15 multi-media interface ECU connector.
2. Disconnect the H14 display and navigation module display connector.
3. Measure the resistance according to the value(s) in the table below.
   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   H15-11 (ACC) - H14-11 (ACC)	Always	Below 1 Ω
   H15-12 (+B) - H14-12 (+B)	Always	Below 1 Ω
   H15-7 (GND) - H14-7 (GND)	Always	Below 1 Ω
   H15-11 (ACC) - Body ground	Always	10 kΩ or higher
   H15-12 (+B) - Body ground	Always	10 kΩ or higher
   H15-7 (GND) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   4