Did you perform the Cellular Telephone System Check ?

--

Go to Step 2

Go to Cellular Telephone System Check

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

Is the fuse open?

--

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?

--

Go to Step 19

--

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 following components:

•	The cellular telephone module connector terminal 8.

•

Ground.

Is the measured voltage in the specified range?

10-15V

Go to Step 6

Go to Step 5

Repair the open in CKT 2240 (ORN)

Is the repair complete?

--

Go to Step 19

--

Using a DMM, measure the voltage between the following cellular telephone module connector terminals:

Is the measured voltage in the specified range?

10-15V

Go to Step 8

Go to Step 7

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

Is the repair complete?

--

Go to Step 19

--

Inspect the state of the battery.

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

--

Go to Step 9

Go to Step 10

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

Is the repair complete?

--

Go to Step 19

--

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?

10-15V

Go to Step 14

Go to Step 11

Check for an open in CKT 43 (YEL).

Is the circuit open?

--

Go to Step 12

Go to Step 13

Repair the open in CKT 43 (YEL).

Is the repair complete?

--

Go to Step 19

--

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

Is the repair complete?

--

Go to Step 19

--

Using a DMM, measure the voltage between the following cellular module connector terminals

1. Terminal E.
2. Terminal K.

Is the measured voltage in the specified range?

10-15V

Go to Step 16

Go to Step 15

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

Is the repair complete?

--

Go to Step 19

--

Check the cellular telephone handset jumper wiring for continuity.

Is the wiring OK?

--

Go to Step 18

Go to Step 17

Repair the cellular telephone handset jumper wiring.

Is the repair complete?

--

Go to Step 19

--

1. Inspect the following connectors for poor terminal contact:

•	The cellular telephone handset connector.

•	The cellular telephone handset jumper connector.

2. If OK, replace the cellular telephone handset. Refer to Cellular Telephone Replacement .

Is the repair complete?

--

Go to Step 19

--

1. Make sure any components removed during diagnosis are installed in place and that all connectors are connected.
2. Repeat the system check. Refer to Cellular Telephone System Check .

Is the system check complete?

--

System OK

--