Multi-media Interface ECU Power Source Circuit: Procedure
- CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER - MULTI-MEDIA INTERFACE ECU)
- Disconnect the G11 multi-media interface ECU connector.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
Tester Connection Switch Condition Specified Condition G11-12 (+B) - G11-7 (GND) Always 11 to 14 V G11-11 (ACC) - G11-7 (GND) Ignition switch 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
- CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER - MULTI-MEDIA INTERFACE ECU)
- Disconnect the G19 navigation receiver assembly connector.
- Disconnect the G11 multi-media interface ECU connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition G19-11 (ACC) - G11-11 (ACC) Always Below 1 Ω G19-12 (+B) - G11-12 (+B) Always Below 1 Ω G19-7 (GND) - G11-7 (GND) Always Below 1 Ω G19-11 (ACC) - Body ground Always 10 kΩ or higher G19-12 (+B) - Body ground Always 10 kΩ or higher G19-7 (GND) - Body ground Always 10 kΩ or higher
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK → See step 3
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE