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TOYOTA
Service Diagnostic Manual
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
1
No audio or video
2
No Audio
Video is OK
VCP accepts a
tape
3
No video Audio is
OK
4
Radio will not tune
in stations
5
VES audio too low
Radio volume OK
6
AUX audio or video
NG VCP audio
and video OK
7
No headphone
sound (wired)
8
No headphone
sound (wireless)
9
Noise in VES audio
with Night–mode
on
10
VCP does not eject
11
Audio poor – VCP
LED flashes
SIENNA
2001 – VIDEO ENTERTAINMENT SYSTEM
Explanation
Protection Mode engaged
Trouble in IG Power sup-
ply
Remote Control NG
Bad VHS Tape
Trouble in radio/VES set-
tings or connections
AUX mode engaged
Trouble in harness
Trouble with FM Modula-
tor
VES VOL setting too low
Trouble with AUX board in
center console
Problem in headphone,
AUX board, or harness
Problem in headphone,
AUX board, or harness
Problem with FM Modula-
tor power filter
Problem in wiring or in
Monitor Assembly
VCP in Self–Tracking
mode, needs cleaning, or
bad videotape
Page 5 of 20 pages
Check and Repair
See Diagnostic Error Codes
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.
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.
Press VCP on remote.
STEP 1: CHECK 5 Monitor Assembly ground distribution
check.
STEP 1: Verify problem remains with VES OFF and screen
closed.
STEP 2: CHECK 8 FM Modulator harness check.
Raise volume with remote.
STEP 1: CHECK 9 AUX board/Monitor Assembly check.
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.
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.
Replace FM Modulator in–line power filter
(see diagram on
Page
14).
STEP 1: CHECK 10 Switched voltage check.
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.
(Page
6).
SM
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