Toyota Sienna Service Manual: Stereo Component Amplifier Communication Error
INSPECTION PROCEDURE
1 IDENTIFY THE COMPONENT SHOWN BY THE SUB-CODE
- Enter the diagnostic mode.
- Press the preset switch "3" to change to "Detailed
Information Mode".
- Identify the component shown by the sub-code.
HINT:
- "190 (radio receiver)" is the component shown by the subcode
in the example shown in the illustration.
- 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:
3 INSPECT RADIO RECEIVER
- Disconnect the radio receiver connectors.
- Measure the resistance according to the value(s) in the
table below.
Standard resistance
*1: 10 Speaker System
4 CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER -COMPONENT SHOWN
BY SUB-CODE)
HINT:
- Start the check from the circuit that is near the component
shown by the sub-code first.
- For details of the connectors, refer to the "TERMINALS OF ECU".
- Referring to the AVC-LAN wiring diagram below, check
the AVC-LAN circuit between the stereo component
amplifier and the component shown by the sub-code.
- Disconnect all connectors between the stereo
component amplifier and the component shown by
sub-code.
- Check for an open or short in the AVC-LAN circuit
between the stereo component amplifier and the
component shown by the sub-code.
OK:
There is no open or short circuit.
5 REPLACE COMPONENT SHOWN BY SUB-CODE
- Replace the component shown by the sub-code with a
normal one and check if the same problem occurs again.
OK:
Same problem does not occur
END
INSPECTION PROCEDURE
1 IDENTIFY THE COMPONENT SHOWN BY THE SUB-CODE
Enter the diagnostic mode
Press the preset switch "3" to change to "Detailed
Information Mode". ...
INSPECTION PROCEDURE
1 IDENTIFY THE COMPONENT SHOWN BY THE SUB-CODE
Enter the diagnostic mode.
Press the preset switch "3" to change to "Detailed
Information Mode" ...
Other materials:
Shift Solenoid "D" Performance (Shift Solenoid
Valve S4)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor to detect the actual gear
position (1st, 2nd, 3rd, 4th
or 5th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory
to detect mechanical
problems of the shift solenoid valves, valve b ...
Control Module Performance
DESCRIPTION
The ECM continuously monitors its main and sub CPUs. This self-check ensures
that the ECM is
functioning properly. If outputs from the CPUs are different and deviate from
the standards, the ECM will
illuminate the MIL and set a DTC immediately.
The ECM also monitors the cru ...
Stop light switch
ON-VEHICLE INSPECTION
1. STOP LIGHT SWITCH ASSEMBLY
Check the resistance between the terminals at each
switch position as shown ion the chart.
Resistance
...