1

Inspect fuses EF6, F22, and F10.

Are fuses EF6, F22, and F10 open?

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Go to Step 2

Go to Step 3

1. Inspect for a short circuit and repair if necessary.
2. Replace the open fuses.

Is the repair complete?

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System OK

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1. Use a voltmeter to test for battery voltage at fuses EF6 and F10.
2. Turn ON the ignition and test for battery voltage at fuse F22.

Does the battery voltage match the specified value at fuses EF6, F22, and F10?

11-14 V

Go to Step 5

Go to Step 4

Repair the power supply circuit to the fuses.

Is the repair complete?

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System OK

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1. Disconnect the radio electrical connector.
2. Turn ON the ignition.
3. Use a voltmeter to test for battery voltage at the radio connector terminals 4 and 5.

Does the battery voltage match the specified value at both terminals?

11-14 V

Go to Step 7

Go to Step 6

Repair the open circuit between the radio connector and the fuse.

Is the repair complete?

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System OK

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Use an ohmmeter to test the ground circuit at the radio connector terminal 14.

Does the resistance match the specified value?

0-0.5 ohms

Go to Step 9

Go to Step 8

Repair the open ground circuit between the radio connector and ground G202.

Is the repair complete?

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System OK

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Replace the radio. Refer to Radio Replacement .

Is the repair complete?

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System OK

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