Page 482 - Workshop Manual - Tunland (2017)

04-344 DIAGNOSTICS - AUDIO SYSTEM

SPEAKERS MAKE POOR-QUALITY SOUND IN ANY MODE

Diagnostic steps

1 . Check the setup of the acoustics unit

(a) Ignition Switch: ON.
04 (b) Push the power switch of acoustics unit.
(c) Set the volume of acoustics unit to over 10VOL.
(d) Set the “FAD” and “BAL” to their initial settings.
(e) Push and hold “VOL” for at least 2 seconds to turn on the loudness function.

Check the speakers for normal tone quality?
Yes > CD/DVD acoustics unit is set up improperly.

No> go to step 2

2 . Check the speakers
(a) Ignition Switch: OFF.
(b) Dismount the speakers. (Refer to “Chapter 66 Audio system - speaker assembly,
replacement”)
(c) Check the speakers for attached foreign matters.
(d) Check the cones of speakers for excessive accumulated dust.
(e) Check the speakers for damaged cones.

(f) Use a multimeter to measure the resistance
between pin 1 and pin 2 of the front speaker.

Standard voltage
Multimeter connection Standard value

1-2 4 Ω