Inspect all of the speakers.

Are all of the speakers inoperative?

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Go to Step 2

Go to Step 5

1. Turn the ignition switch to the OFF position.
2. Disconnect the radio connectors C1 and C2.
3. Connect a digital multimeter (DMM).
4. Measure the resistance.
5. Probe the radio connectors between the speaker feed (+) and the speaker return (-) circuits of each speaker.

Is the resistance within the specified value for each speaker?

2-4ohms

Go to Step 9

Go to Step 3

Inspect all of the speaker feed (+) circuits for a short to ground.

Is there a short to ground?

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Go to Step 7

Go to Step 4

Inspect for a short to ground in all of the speaker return (-) circuits.

Is there a short to ground?

--

Go to Step 8

Go to Step 9

1. Turn the ignition switch to the ACCY position.
2. Turn the radio ON.
3. Insert the cassette tape or the compact disc from J 39916-A .
4. Set the radio balance and fade controls to the detent (center) position.
5. Set the radio volume at a normal listening level.
6. Connect a DMM.
7. While playing the combination test tone from the cassette or the compact disc, backprobe between terminals A and B of the inoperative speaker harness connector.

Does the voltage vary above the specified value?

3V

Go to Step 10

Go to Step 6

Inspect for continuity in the speaker feed (+) circuit between the radio and the inoperative speaker.

Is there continuity?

--

Go to Step 12

Go to Step 11

Repair a short to ground in the affected speaker feed (+) circuit.

Is the repair complete?

--

Go to Step 5

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Repair a short to ground in the affected speaker return (-) circuit.

Is the repair complete?

--

Go to Diagnostic System Check - Radio/Audio System

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Replace the radio. Refer to Radio Replacement for service procedure.

Is the repair complete?

--

Go to Diagnostic System Check - Radio/Audio System

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Replace the inoperative speaker. Refer to Radio Front Side Door Speaker Replacement or Radio Rear Speaker Replacement or Radio Rear Speaker Grille Replacement for service procedure.

Is the repair complete?

--

Go to Diagnostic System Check - Radio/Audio System

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Repair a poor connection or open in the inoperative speaker feed circuit.

Is the repair complete?

--

Go to Diagnostic System Check - Radio/Audio System

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Repair a poor connection or open in the speaker return (-) circuit.

Is the repair complete?

--

Go to Diagnostic System Check - Radio/Audio System

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