Multi-Media Interface ECU Power Source Circuit: Procedure
- CHECK MULTI-MEDIA INTERFACE ECU
- Disconnect the D66 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 D66-12 (+B) - D66-7 (GND) Always 11 to 14 V D66-11 (ACC) - D66-7 (GND) Ignition switch ACC 11 to 14 V TEXT IN ILLUSTRATION*1 Front view of wire harness connector
(to Multi-Media Interface ECU)
NG → See step 3
OK → See step 2
- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE
- CHECK HARNESS AND CONNECTOR (MULTI-MEDIA INTERFACE ECU - RADIO RECEIVER)
- Disconnect the D66 multi-media interface ECU connector.
- Disconnect the D60 radio receiver assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition D66-11 (ACC) - D60-11 (ACC) Always Below 1 Ω D66-12 (+B) - D60-12 (+B) Always Below 1 Ω D66-7 (GND) - D60-7 (GND) Always Below 1 Ω D66-11 (ACC) - Body ground Always 10 kΩ or higher D66-12 (+B) - Body ground Always 10 kΩ or higher D66-7 (GND) - Body ground Always 10 kΩ or higher
NG → REPAIR OR REPLACE HARNESS OR CONNECTOR
OK → See step 2