Did you perform the Cellular Telephone System Check?

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Go to Step 2

Go to Cellular Telephone System Check

Inspect the CD/PH fuse in the rear fuse block.

Is the fuse open?

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Go to Step 4

Go to Step 3

1. Repair the short to ground in CKT 2240 (ORN).
2. Replace the CD/PH fuse in the rear fuse block.

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 module connector.
3. Turn the ignition switch to RUN.
4. Using a J 39200 digital multimeter (DMM), measure the voltage between the cellular telephone module connector terminal 8 and ground.

Is the measured voltage in the specified range?

10-15 V

Go to Step 6

Go to Step 5

Repair the open in CKT 2240 (ORN).

Is the repair complete?

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Go to Cellular Telephone System Check

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Using a DMM, measure the voltage between the cellular telephone module connector terminal 8 and terminal 7.

Is the measured voltage in the specified range?

10-15 V

Go to Step 8

Go to Step 7

Repair the open in CKT 1351 (BLK/WHT).

Is the repair complete?

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Go to Cellular Telephone System Check

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Inspect the state of the battery.

Is the battery charged enough in order to power the cellular telephone?

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Go to Step 9

Go to Step 10

Replace the portable cellular telephone. Refer to Cellular Telephone Replacement .

Is the repair complete?

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Go to Cellular Telephone System Check

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1. Disconnect the cellular telephone handset connector from the vehicle connector.
2. Using a DMM, measure the voltage from harness connector terminal E to ground.

Is the measured voltage in the specified range?

10-15 V

Go to Step 14

Go to Step 11

Test for an open in CKT 43 (YEL).

Is the circuit open?

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Go to Step 12

Go to Step 13

Repair the open in CKT 43 (YEL).

Is the repair complete?

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Go to Cellular Telephone System Check

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Replace the cellular telephone module. Refer to Radio Frequency Booster and Bracket Assembly Replacement .

Is the repair complete?

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Go to Cellular Telephone System Check

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Using a DMM, measure the voltage between the cellular module connector terminal E and terminal K.

Is the measured voltage in the specified range?

10-15 V

Go to Step 16

Go to Step 15

Repair the open in CKT 1351 (BLK/WHT).

Is the repair complete?

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Go to Cellular Telephone System Check

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Test the cellular telephone handset jumper wiring for continuity.

Is the wiring OK?

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Go to Step 18

Go to Step 17

Repair the cellular telephone handset jumper wiring.

Is the repair complete?

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Go to Cellular Telephone System Check

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Inspect the following connectors for poor terminal contact:

Are the connections OK?

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Go to Step 19

Go to Step 20

Replace the cellular telephone handset.

Is the replacement complete?

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Go to Cellular Telephone System Check

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Repair the poor connection.

Is the repair complete?

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Go to Cellular Telephone System Check

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