Did you review the radio/audio system description and operation and perform the necessary inspections?

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Go to Step 2

Go to Symptoms

Verify the fault is present.

Does the system operate normally?

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Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

1. Disconnect the C1 connector at the radio.
2. Connect an J 35616-200 unpowered test lamp between radio connector C1 cavity 10 for CKT 1140 (ORN) and ground.

Did the test lamp light?

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Go to Step 4

Go to Step 5

1. Remove the radio. Refer to Radio Replacement .
2. Send the radio in for repair.

Is the repair complete?

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Go to Step 6

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Repair the open in CKT 1140 (ORN) between the IP fuse block and the radio. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to Step 6

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Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 3