Multimedia Interface ECU Power Source Circuit: Procedure
- INSPECT MULTIMEDIA INTERFACE ECU
- Disconnect the multimedia interface ECU connector.
- Measure the voltage according to the value(s) in the table below.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Standard Voltage
Tester Connection Condition Specified Condition F80-12 (+B) - F80-7 (GND) Power switch off 11 to 14 V F80-11 (ACC) - F80-7 (GND) Power switch on (ACC) 11 to 14 V TEXT IN ILLUSTRATION*1 Front view of wire harness connector
(to Multimedia Interface ECU)
NG → See step 2
OK → See step 3
- CHECK HARNESS AND CONNECTOR
- Disconnect the display and navigation module display connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition F80-11 (ACC) - F33-11 (ACC) Always Below 1 Ω F80-12 (+B) - F33-12 (+B) Always Below 1 Ω F80-7 (GND) - F33-7 (GND) Always Below 1 Ω F80-11 (ACC) - Body ground Always 10 kΩ or higher F80-12 (+B) - Body ground Always 10 kΩ or higher F80-7 (GND) - Body ground Always 10 kΩ or higher
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK → See step 4
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE
- REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY. Refer to REMOVAL