Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference : Radio/Audio System Schematics | |||
1 | Did you perform the Radio/Audio System Diagnostic System Check? | Go to Step 2 | |
2 | Tune the radio to a known strong AM station and then to a strong FM station. Is the radio reception clear? | Go to Step 3 | |
3 | Inspect for proper connections at the antenna and the radio antenna module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 13 | Go to Step 4 |
4 | Does poor or no reception occur only on AM? | Go to Step 5 | Go to Step 6 |
5 | Test the battery positive voltage circuit to the radio antenna module for an open, short to ground or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition. | Go to Step 13 | Go to Step 6 |
6 |
Important: Always zero out the DMM before taking a resistance measurement to ensure an accurate reading. Test the antenna ground circuit for an open, or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 13 | Go to Step 7 |
7 |
Important: Always zero out the DMM before taking a resistance measurement to ensure an accurate reading. Test the antenna center conductor for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 13 | Go to Step 8 |
8 |
Does the AM reception degrade further? | Go to Step 10 | Go to Step 9 |
9 | Inspect for poor connections at the radio antenna module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 13 | Go to Step 11 |
10 | Inspect for poor connections at the radio. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 13 | Go to Step 12 |
11 | Replace the radio antenna module. Refer to Radio Antenna Module Replacement for service procedure. Did you complete the replacement? | Go to Step 13 | -- |
12 | Replace the radio and perform the set up procedure. Refer to Radio Replacement and Radio Setup . Did you complete the replacement? | Go to Step 13 | -- |
13 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
