Step | Action | Yes | No | ||||||
---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Cellular Telephone Schematics | |||||||||
1 | Did you perform Diagnostic System Check - Cellular Communication ? | Go to Step 2 | |||||||
2 |
Does the system operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 | ||||||
3 | Test the modem audio return signal for the following:
Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 10 | Go to Step 4 | ||||||
4 | Test the modem audio transmit signal for the following:
Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 10 | Go to Step 5 | ||||||
5 | Test the modem audio low reference signal for the following:
Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 10 | Go to Step 6 | ||||||
6 | Inspect for poor connections at the harness connector of the CommuniportPC radio (U45). 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 10 | Go to Step 7 | ||||||
7 | 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 10 | Go to Step 8 | ||||||
8 | Replace the cellular telephone module. Refer to Cellular Telephone Module Replacement . Did you complete the replacement? | Go to Step 10 | Go to Step 9 | ||||||
9 | Replace the CommuniportPC radio (U45). Refer to Radio Replacement in Entertainment. Did you complete the replacement? | Go to Step 10 | -- | ||||||
10 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |