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. Measure the resistance with the J 39200 Digital Multimeter (DMM).
4. Probe the radio connectors between the speaker feed (+) and the speaker return (-) circuits of each speaker.

Is the resistance within the specified range 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 in any of the speaker feed (+) circuits?

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Go to Step 7

Go to Step 4

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

Is there a short to ground in any of the speaker return (-) circuits?

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Go to Step 8

Go to Step 9

1. Turn the ignition switch to the ACCY position.
2. Turn on the radio.
3. Insert the cassette or the compact disc from the J 39916-A into the radio.
4. Set the radio balance and fade controls to the detent (center) position.
5. Set the radio volume at a normal listening level.
6. Complete the following actions simultaneously:

•	Play the combination test tone from the cassette or the compact disc.

•	Use a J 39200 DMM in order to 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

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

Is there continuity in the speaker feed circuit?

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Go to Step 12

Go to Step 11

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

Is the repair complete?

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Go to Radio/Audio System Check

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

Is the repair complete?

--

Go to Radio/Audio System Check

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Service the radio. Refer to Radio Replacement .

Is the repair complete?

--

Go to Radio/Audio System Check

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Replace the inoperative speaker. Refer to Radio Front Side Door Speaker Replacement or Radio Rear Speaker Replacement .

Is the repair complete?

Go to Radio/Audio System Check

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

Is the repair complete?

--

Go to Radio/Audio System Check

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

Is the repair complete?

--

Go to Radio/Audio System Check

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