TOYOTA
SIENNA 2001 – VIDEO ENTERTAINMENT SYSTEM
Service Diagnostic Manual
Page 5 of 20 pages
SM
Troubleshooting Table
Determine the failure condition, and then repair it by using the TROUBLESHOOTING TABLE.
The VES can communicate certain protection modes (which can resemble system failure) by
flashing the Status LED’s in the monitor assembly. These modes are defined on the next
page.
NOTE: Audio and video signals referred to in the troubleshooting table originate from the VCP
unless otherwise stated.
No.
Condition
Explanation
Check and Repair
1
No audio or video
Protection Mode engaged
Trouble in IG Power sup-
ply
Remote Control NG
See Diagnostic Error Codes (
Page 6
).
STEP 1: CHECK 1 Radio/VCP fuse check.
STEP 2: CHECK 2 VES harness power connection check.
STEP 3: CHECK 3 VES harness ground check.
STEP 4: CHECK 4 VCP/Monitor Assembly harness check.
STEP 5: CHECK 5 Monitor Assembly ground distribution
check.
Check batteries and/or replace remote if required.
2
No Audio
Video is OK
VCP accepts a
tape
Bad VHS Tape
Trouble in radio/VES set-
tings or connections
Try second VHS tape.
STEP 1: CHECK 6 FM Freq/FM Modulator check.
STEP 2: CHECK 7 VES/radio VOLUME check.
STEP 3: CHECK 8 FM Modulator harness check.
3
No video Audio is
OK
AUX mode engaged
Trouble in harness
Press VCP on remote.
STEP 1: CHECK 5 Monitor Assembly ground distribution
check.
4
Radio will not tune
in stations
Trouble with FM Modula-
tor
STEP 1: Verify problem remains with VES OFF and screen
closed.
STEP 2: CHECK 8 FM Modulator harness check.
5
VES audio too low
Radio volume OK
VES VOL setting too low
Raise volume with remote.
6
AUX audio or video
NG VCP audio
and video OK
Trouble with AUX board in
center console
STEP 1: CHECK 9 AUX board/Monitor Assembly check.
7
No headphone
sound (wired)
Problem in headphone,
AUX board, or harness
STEP 1: Check headphone volume setting.
STEP 2: (OPTIONAL) Using test headphones, check for out-
put. IF NG, go to STEP 3.
STEP 3: CHECK 9 AUX/Monitor Assembly check.
8
No headphone
sound (wireless)
Problem in headphone,
AUX board, or harness
STEP 1: Check headphone power switch and volume setting.
STEP 2: Check batteries in headphones.
STEP 3: (OPTIONAL) Test using test wired headphones. IF
NG, go to CHECK 9 AUX/Monitor Assembly check.
9
Noise in VES audio
with Night–mode
on
Problem with FM Modula-
tor power filter
Replace FM Modulator in–line power filter
(see diagram on
Page 14
).
10
VCP does not eject
Problem in wiring or in
Monitor Assembly
STEP 1: CHECK 10 Switched voltage check.
11
Audio poor – VCP
LED flashes
VCP in Self–Tracking
mode, needs cleaning, or
bad videotape
VCP has auto tracking self–adjustment mode (indicated by
LED). If no flashing LED is present, clean with a good–quali-
ty head cleaner, and try another videotape with known good
audio.
