INSPECTION PROCEDURE
IDENTIFY COMPONENT SHOWN BY SUB-CODE
CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE
INSPECT RADIO RECEIVER ASSEMBLY
CHECK HARNESS AND CONNECTOR (MULTI-MEDIA INTERFACE ECU - COMPONENT SHOWN BY SUB-CODE)
REPLACE COMPONENT SHOWN BY SUB-CODE
AUDIO AND VISUAL SYSTEM (w/o Navigation System) - Multi-media Interface ECU Communication Error
INSPECTION PROCEDURE
| 1.IDENTIFY COMPONENT SHOWN BY SUB-CODE |
Enter diagnostic mode.
Press preset switch "2" to change to "Detailed Information Mode".
Identify the component shown by the sub-code.
"P190" set by the radio receiver assembly shown in the preceding illustration as an example.
For details of the DTC display, refer to DTC Check/Clear ().
| 2.CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE |
Inspect the power source circuit of the component shown by the sub-code.
If the power source circuit is operating normally, proceed to the next step.
Component Table| Component | Proceed to |
| Radio receiver assembly (190) | Radio receiver power source circuit () |
| Stereo component amplifier assembly (440) | Stereo component amplifier power source circuit () |
| 3.INSPECT RADIO RECEIVER ASSEMBLY |
Disconnect the F1 and F55 radio receiver assembly connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| F1-5 (ATX+) - F1-15 (ATX-) | Always | 60 to 80 Ω |
| F55-9 (TXM+) - F55-10 (TXM-) | Always | 60 to 80 Ω |
Text in Illustration| *1 | Component without harness connected
(Radio Receiver Assembly) |
| *2 | Component without harness connected
(Radio Receiver Assembly) |
| | REPLACE RADIO RECEIVER ASSEMBLY ()
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| 4.CHECK HARNESS AND CONNECTOR (MULTI-MEDIA INTERFACE ECU - COMPONENT SHOWN BY SUB-CODE) |
Start the check from the circuit that is near the component shown by the sub-code first.
For details of the connectors, refer to Terminals of ECU ().
Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the multi-media interface ECU and component shown by the sub-code.
Disconnect all connectors between the multi-media interface ECU and component shown by the sub-code.
Check for an open or short in the AVC-LAN circuit between the multi-media interface ECU and component shown by the sub-code.
- OK:
- There is no open or short circuit.
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 5.REPLACE COMPONENT SHOWN BY SUB-CODE |
Replace the component shown by the sub-code with a known good one and check if the same problem occurs again.
- OK:
- Malfunction disappears.
| | REPLACE MULTI-MEDIA INTERFACE ECU ()
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