Page 2315 - Foton Workshop Manual - Aumark (BJ1099)

DIAGNOSIS-AUDIO SYSTEM 62-263

Diagnosis Procedure

1. Check the sound unit settings

(a). Ignition switch:"ON".
(b). Press down the power switch of sound unit. 62
(c). Tune the sound unit volume to over 10VOL.
(d). Set the "BAL" to 0.

Check whether the loudspeaker volume is normal?
Yes>the sound unit settings of CD/DVD are not correct.
No >Back to Step 2.

2. Check the loudspeaker

(a). Ignition switch:"LOCK".
(b). Remove the loudspeaker. (Refer to "Chapter 45 Audio System--Loudspeaker
Assembly, Replacing")
(c). Check whether the loudspeaker cone is damaged.

(d). Check the resistance between the No.1
and the No.2 pins of the left and right front
loudspeakers J05 and G05 with multimeter.
Standard resistance：

Connect the pin by Standard value
multimeter

J05(1) - J05(2) 4Ω

G05(1) - G05(2) 4Ω

(e). Check the resistance between the No.1
and the No.2 pin of the left and right rear
loudspeaker I02 and H02 with multimeter.

Standard resistance：

Connect the pin by Standard value
multimeter
I02(1) - I02(2) 4Ω

H02(1) - H02(2) 4Ω

Is the result normal?
Yes>To step3.
No >Replace the loudspeaker.

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