Did you perform the Cellular Telephone System Check?

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Go to Step 2

Go to Cellular Telephone System Check

1. Connect a scan tool to the data link connector (DLC).
2. Turn the ignition switch to RUN.
3. Using the scan tool, choose Body Diagnostics.
4. Select cellular telephone (PHN).
5. Choose Data Display, then select Inputs.
6. Observe the Hands Free State screen.
7. Attempt a hands free call.

Does the scan tool indicate Active for the hands free state?

Go to Step 6

Go to Step 3

Is the cellular telephone handset properly docked?

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Go to Step 5

Go to Step 4

Properly connect the cellular telephone handset.

Is the repair complete?

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Go to Cellular Telephone System Check

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1. Inspect the cellular telephone handset connector for poor terminal contact.
2. If the contact is OK, replace the cellular telephone handset. Refer to Cellular Telephone Replacement .

Is the repair complete?

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Go to Cellular Telephone System Check

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1. Turn the ignition switch to OFF.
2. Disconnect the cellular telephone handset connector.
3. Turn the ignition switch to RUN.
4. Using a J 39200 digital multimeter (DMM), measure the voltage between the cellular telephone handset connector terminal J and terminal K.

Is the measured voltage above the specified value?

0.5 V

Go to Step 7

Go to Step 8

Repair the short to ground in CKT 655 (GRY).

Is the repair complete?

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Go to Cellular Telephone System Check

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1. Disconnect the cellular telephone microphone connector.
2. Using a DMM set to the ohms scale, measure the resistance between the following components:

•	The cellular telephone handset connector terminal J

•	The cellular telephone microphone connector terminal B

Is the measured resistance less than the specified value?

5 ohms

Go to Step 10

Go to Step 9

Repair the open in CKT 655 (GRY).

Is the repair complete?

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Go to Cellular Telephone System Check

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1. Disconnect the cellular telephone microphone connector.
2. Using a DMM set to the ohms scale, measure the resistance between the following components:

•	The cellular telephone handset connector terminal B

•	The cellular telephone microphone connector terminal A

Is the measured resistance less than the specified value?

5 ohms

Go to Step 12

Go to Step 11

Repair the open in CKT 2012 (DK GRN).

Is the repair complete?

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Go to Cellular Telephone System Check

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Replace the cellular telephone microphone. Refer to Hands-Free Microphone Replacement .

Is the repair complete?

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Go to Cellular Telephone System Check

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