Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you review the cellular telephone operation and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms |
2 |
Important:: Ensure the cellular telephone handset is properly connected and docked. Attempt to communicate using the cellular telephone in the hands free mode. Is your transmission received? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Does the data parameter indicate Active for the Hands Free State? | -- | Go to Step 9 | Go to Step 4 |
4 | Inspect the cellular telephone handset for poor terminal contact. Did you find the condition? | -- | Go to Step 12 | Go to Step 5 |
5 |
Does the voltage measure within the specified range? | 10-15V | Go to Step 8 | Go to Step 6 |
6 | Test the microphone audio circuit from the cellular telephone hand set to the cellular telephone microphone for a short to ground, a high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 15 | Go to Step 7 |
7 | Test the microphone ground circuit from the cellular telephone hand set to the cellular telephone microphone for a short to battery positive, a high resistance or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 15 | Go to Step 9 |
8 | Inspect for poor connections at the harness connector of the cellular telephone microphone. 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 15 | Go to Step 11 |
9 | Inspect for poor connections at the harness connector of the cellular telephone handset. 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 15 | Go to Step 10 |
10 | Inspect for poor connections at the harness connector of the cellular telephone 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 15 | Go to Step 12 |
11 | Replace the cellular telephone microphone. Refer to Hands-Free Microphone Replacement . Did you complete the replacement? | -- | Go to Step 15 | -- |
12 | Test the cellular telephone operation using a known good cellular telephone handset. Does the cellular telephone function properly? | -- | Go to Step 13 | Go to Step 14 |
13 | Replace the cellular telephone handset. Refer to Cellular Telephone Replacement . Did you complete the replacement? | -- | Go to Step 15 | -- |
14 | Replace the cellular telephone module. Refer to Radio Frequency Booster and Bracket Assembly Replacement . Did you complete the replacement? | -- | Go to Step 15 | -- |
15 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
