Toyota Sienna Service Manual: Display Signal Circuit between Television Display Assembly and Radio and Navigation Assembly
DESCRIPTION
This circuit sends a DVD image signal from the television display assembly to the radio and navigation assembly.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR (RADIO AND NAVIGATION ASSEMBLY - TELEVISION DISPLAY ASSEMBLY)
- Disconnect the radio and navigation assembly connector R16 and television display assembly connector T14.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
2 INSPECT TELEVISION DISPLAY ASSEMBLY
- Reconnect the television display assembly connector R16.
- Measure the waveform according to the table below.
OK
HINT: The waveform pattern may differ from that shown in the illustration below due to differences in oscilloscope setting. A normal television display assembly operating condition can be determined if any waveform is output.
- Oscilloscope waveform
- Terminal: VV+ - Body groun
Setting: 200 mV/DIV., 10 μs/DIV.
Condition: DVD display is ON.
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Navigation Voice Circuit
DESCRIPTION
This circuit is used when the voice guidance in the navigation system is on.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR (RADIO AND NAVIGATION ASSEMBLY - STER ...
Microphone Circuit between Microphone and Radio and Navigation
Assembly
DESCRIPTION
This circuit sends a microphone signal from the microphone to the radio and
navigation assembly.
It also supplies power from the radio and navigation assembly to the microphone.
WIR ...
Other materials:
Basic inspection
(a) WHEN MEASURING RESISTANCE OF
ELECTRONIC PARTS
(1) Unless otherwise stated, all resistance
measurements should be made at an ambient
temperature of 20°C (68°F). Resistance
measurements may be inaccurate if measured
at high temperatures, i.e. immediately after the
vehicle has been running ...
Open in Driver Side Squib 2nd Step Circuit
DTC B1181/18 Open in Driver Side Squib 2nd Step Circuit
DESCRIPTION
The driver side squib 2nd step circuit consists of the center airbag sensor
assembly, the spiral cable and
the steering pad.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC B1181/18 is reco ...
Headlight Relay Circuit
DESCRIPTION
The Multiplex network body ECU controls HEAD relay when signal is received
from headlight dimmer
switch assembly.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER
Connect the intelligent tester to DLC3.
Turn the ignition switch ON and ...
