Toyota Tacoma 2015-2018 Service Manual: Sound Quality is Bad Only when CD is Played (Volume is Too Low)
PROCEDURE
|
1. |
REPLACE CD AND RECHECK |
(a) Replace the CD with a known good one and check that the malfunction disappears.
OK:
Malfunction disappears.
| OK | .gif) |
END |
| NG | |
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
No Sound can be Heard from Speakers
PROCEDURE
1.
CHECK AUDIO SETTINGS
(a) In sound output setting mode, set volume, fader and balance to the initial
values and check that the sound is normal.
OK:
A ...
CD cannot be Ejected
PROCEDURE
1.
CHECK OPERATION
(a) Press the disc eject switch of the radio and display receiver assembly for
5 seconds or more and check that the CD is ejected.
OK: ...
Other materials:
Voice is not Recognized
PROCEDURE
1.
CHECK CONDITION
(a) Check if the system voice recognition level is low when recognizing a particular
voice.
Result
Result
Proceed to
System voice recognition level is low with any voice
A
...
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY (for Automatic Air Conditioning)
(See page )
2. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY (for Manual Air Conditioning)
(See page )
3. CHECK AIR CONDITIONING CONTROL ASSEMBLY (for Automatic Air Conditioning)
(See page )
4. CHECK ...
Open in Occupant Classification ECU Battery Positive Line (B1794)
DESCRIPTION
DTC B1794 is set when a malfunction is detected in the occupant detection ECU.
DTC No.
DTC Detections Conditions
Trouble Areas
B1794
Occupant detection ECU circuit malfunction
Occupant detection ECU malfuncti ...