• Before disassembling or reassembling parts, al-
ways disconnect the battery ground cable. When
replacing the audio, control unit, and other parts
provided with memory functions, record the memo-
ry contents before disconnecting the battery
ground cable. Otherwise, the memory will be
erased.
• Reassemble the parts in the reverse order of dis-
assembly unless otherwise indicated.
• Adjust parts to the given specifications.
• Connect the connectors securely during reas-
sembly.
• After reassembly, make sure the functional parts
operate smoothly.

B: PREPARATION TOOL

1. GENERAL TOOL

TOOL NAME

REMARKS

Circuit tester

Used for measuring resis-
tance and voltage.

Conductive silver composi-
tion
(DUPONT No. 4817 or
equivalent)

Used for repairing antenna
wire.

ET-3

ENTERTAINMENT

Audio System

2. Audio System

A: WIRING DIAGRAM

<Ref. to WI-280, WIRING DIAGRAM, Audio System.>

B: INSPECTION

Symptom

Repair order

No power coming in. (No display and no sound from speakers)

(1) Check the fuse and power supply for audio.
(2) Check the audio ground.
(3) Remove the audio and repair it.

A specific speaker does not operate.

(1) Check the speaker.
(2) Check the output circuit between audio and speaker.

Audio generates noise with engine running.

(1) Check the audio ground.
(2) Check the generator.
(3) Check the ignition coil.
(4) Remove the audio and repair it.

AM and FM modes are weak or noisy.

(1) Check the antenna.
(2) Check the antenna amplifier.
(3) Check the noise suppressor.
(4) Check the audio ground.
(5) Remove the audio and repair it.

ET-4

ENTERTAINMENT

Front Accessory Power Supply Socket System

3. Front Accessory Power Sup-

ply Socket System

A: WIRING DIAGRAM

<Ref. to WI-288, WIRING DIAGRAM, Front Acces-
sory Power Supply Socket System.>

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