Cell Phone — Pinpoint Tests (Focus 1)

A1: CHECK FOR THE PRESENCE OF A CELL PHONE SYMBOL ON THE AUDIO UNIT

1Check the compatibility of the audio unit.

• Is there a phone symbol on the audio unit after the model number?

→ Yes

Go to A2

→ No

INSTALL the new audio unit with the telephone symbol. CHECK that the system is working properly.

A2: CHECK THE PRESENCE OF THE PHONE SYMBOL ON THE AUDIO UNIT DISPLAY

1Enter the ON position.

• ATTACH the cell phone to the handset bracket. When the unit is turned on, does the PHONE SYMBOL appear on the audio unit display?

→ Yes

Go to A3

→ No

Go to B3 Proceed to PINPOINT TEST B

A3: CHECK HARNESS 91S-MD37 FROM AUDIO UNIT TO PORTABLE MODE SUPPORT MODULE

1Enter the OFF position.

2Disconnect the Portable Operation Support Module - C463.

3Disconnect Audio Unit - C447.

4Using a digital multimeter, measure the resistance between pin 4 of C447 of the audio unit, circuit 91S - MD37 (Black/Red), harness side, and pin 11 of C463 of the portable mode support module, circuit 91S - MD37 (Black/Red), harness side.

• Is the resistance less than 5 ohms?

→ Yes

Go to A4

→ No

Repair the electrical circuit. CHECK the system for proper operation.

A4: CHECK THE VOLTAGE AT THE PORTABLE MODE SUPPORT MODULE SECTION

1Enter the ON position.

2Using a digital multimeter, measure the voltage between the portable mode support module C463 pin 10, circuit 29-MC9 (Orange/Black), harness side and the portable mode support module C463 pin 8, circuit 75-MC9 (Yellow/Green), harness side and ground.

• Is the voltage greater than 10 V in all cases?

→ Yes

Go to A5

→ No

REPAIR circuit 29-MC9 (orange/black) or circuit 75-MC9 (yellow/green). CHECK for proper system operation.

A5: CHECK GROUND CIRCUIT 91-MC9 (BLACK/GREEN)

1Enter the OFF position.

2Using a digital multimeter, measure the resistance between pin 9 of the C463 Portable Mode Support Module, circuit 91 - MC9 (Black/Green), harness side, and ground.

• Is the resistance less than 5 ohms?

→ Yes

Go to A6

→ No

Repair the electrical circuit. CHECK the system for proper operation.

A6: CHECK THE FUNCTIONING OF THE AUDIO UNIT

1Replace with a known good compatible audio unit.

2Enter the ON position.

3Check the proper functioning of the audio unit.

• Does the audio unit display PHONE when you place the cell phone on the handset mount?

→ Yes

INSTALL the new audio unit. CHECK that the system is working properly.

→ No

INSTALL the new portable mode support module. CHECK that the system is working correctly.

Q1: CHECK CELL PHONE DISPLAY WHEN USING OUTSIDE OF VEHICLE

1Use your cell phone outside your vehicle.

• Does your cell phone display indicate that the battery is low?

→ Yes

Go to B2 Proceed to PINPOINT TEST B

→ No

CHECK your cell phone battery. REFER to your cell phone owner's manual.

B2: CHECK THE BATTERY SYMBOL ON YOUR CELL PHONE

1Enter the ON position.

• ATTACH the cell phone to the handset mount. Is the battery symbol flashing?

→ Yes

Battery is charging correctly. WAIT for battery to charge. CHECK system for correct operation.

→ No

Go to B3 Proceed to PINPOINT TEST B

B3: CHECK THE VOLTAGE AT THE PORTABLE MODE SUPPORT MODULE SECTION

1Disconnect the Portable Operation Support Module - C463.

2Using a digital multimeter, measure the voltage between the portable mode support module C463 pin 10, circuit 29-MC9 (Orange/Black), harness side and the portable mode support module C463 pin 8, circuit 75-MC9 (Yellow/Green), harness side and ground.

• Is the voltage greater than 10 V in all cases?

→ Yes

Go to B4 Proceed to PINPOINT TEST B

→ No

REPAIR circuit 29-MC9 (orange/black) or circuit 75-MC9 (yellow/green). CHECK for proper system operation.

B4: CHECK TUBE BRACKET CIRCUIT VOLTAGE 8-MC17

1Remove the Tube Bracket - C471.

2Using a digital multimeter, measure the voltage between pin 10 C471 of the tube bracket, circuit 8 - MC17 (White/Red), harness side, and ground.

• Is the voltage more than 10V?

→ Yes

Go to B5 Proceed to PINPOINT TEST B

→ No

NOTE: If the connector is damaged, install a new wiring harness. REPAIR the electrical circuit. CHECK the system for proper operation.

B5: CHECK GROUND CIRCUIT 91-MC9 (BLACK/GREEN)

1Using a digital multimeter, measure the resistance between pin 9 of the C463 Portable Mode Support Module, circuit 91 - MC9 (Black/Green), harness side, and ground.

• Is the resistance less than 5 ohms?

→ Yes

Go to B6 Proceed to PINPOINT TEST B

→ No

REPAIR the electrical circuit. CHECK the system for proper operation.

B6: CHECK GROUND CIRCUIT 91-MC10 (BLACK/RED)

1Using a digital multimeter, measure the resistance between pin 9 C471 of the tube bracket, circuit 91 - MC10 (Black/Red), harness side, and ground.

• Is the resistance less than 5 ohms?

→ Yes

INSTALL the new portable mode support module. CHECK that the system is working correctly.

→ No

Repair the electrical circuit. CHECK the system for proper operation.

C1: CHECK YOUR CELL PHONE SIGNAL LEVEL FROM OUTSIDE THE VEHICLE

NOTE:Before performing any tests, please ensure that you have selected the correct mobile phone service network.

1Use your cell phone while outside your vehicle.

• Does your cell phone provide a good signal outside the vehicle?

→ Yes

Go to C2 Proceed to PINPOINT TEST C

→ No

TEST the system in an area with known good signal strength.

C2: CHECK ANTENNA CONNECTION AT TUBE BRACKET SECTION

1Check the antenna cable connection.

• Is the antenna connected to the handset bracket?

→ Yes

Go to C3 Proceed to PINPOINT TEST C

→ No

RESTORE the antenna CONNECTION. CHECK that the system is working properly.

C3: CHECK THAT THE ANTENNA IS INSTALLATED CORRECTLY

1Inspect the antenna.

• The antenna is correctly installed on the windshield. For more information, refer to Antenna - Cellular Phone in this section..

→ Yes

Go to C4 Proceed to PINPOINT TEST C

→ No

INSTALL the new antenna correctly. For more information, refer to Antenna - Cellular Phone in this section. CHECK that the system is operating correctly.

C4: CHECK ANTENNA CABLE FOR SHORT CIRCUIT

1Using a digital multimeter, measure the resistance between the antenna center conductor and the antenna ground (shield).

• Resistance is between 9,000 and 10,000 ohms?

→ Yes

Go to C5 Proceed to PINPOINT TEST C

→ No

INSTALL a new antenna. For more information, refer to Antenna - Cellular Phone in this section. CHECK that the system is operating correctly.

C5: CHECK ANTENNA CONNECTION TO TUBE BRACKET

1Using a digital multimeter, measure the resistance between the antenna center conductor and the antenna ground (shield).

• Resistance is between 9,000 and 10,000 ohms?

→ Yes

Go to C6 Proceed to PINPOINT TEST C

→ No

INSTALL a new antenna. For more information, refer to Antenna - Cellular Phone in this section. CHECK that the system is operating correctly.

C6: CHECK THE CONNECTOR CONNECTING THE HANDSET BRACKET TO THE CELL PHONE

1Using a digital multimeter, measure the resistance between pin 2 of the C1026 tube bracket, harness side electrical circuit, and pin 3 of the C1026 tube bracket, harness side electrical circuit.

• Resistance is between 9,000 and 10,000 ohms?

→ Yes

CHECK the connection between the cell phone and the handset bracket. CHECK that the system is working properly.

→ No

INSTALL a new tube bracket. For more information, refer to the Tube Bracket in this section. CHECK that the system is operating correctly.

D1: CHECK IF VOICE IS TRANSMITTED DURING PHONE CONVERSATIONS OUTSIDE THE VEHICLE

NOTE:Make sure the cell phone is a genuine Ford cell phone. Similar phones that are not genuine Ford products are not compatible with this system. When turned on, the Ford cell phone displays the Ford logo.

1Use your cell phone while outside your vehicle.

• Does the cell phone transmit voice during telephone conversations outside the vehicle?

→ Yes

Go to D2 Proceed to PINPOINT TEST D

→ No

CONTACT a Motorola Service Center and CHECK that the system is working properly.

D2: CHECK 3-MC8 (BROWN/RED) CIRCUIT FOR OPEN

1Disconnect the Portable Operation Support Module - C463.

2Disconnect Microphone - C440.

3Using a digital multimeter, measure the resistance between pin 2 of C463 Handheld Mode Support Module, circuit 3 - MC8 (Brown/Red), harness side and pin 1 of C440 Microphone, circuit 3 - MC8 (Brown/Red), harness side.

• Is the resistance less than 5 ohms?

→ Yes

Go to D3 Proceed to PINPOINT TEST D

→ No

REPAIR the electrical circuit. CHECK the system for proper operation.

D3: CHECK CIRCUIT 1-MD26 (WHITE/BLACK) FOR OPEN CIRCUIT

1Using a digital multimeter, measure the resistance between pin 3 of C463 of the Handheld Mode Support Module, circuit 1 - MD26 (White/Black), and pin 1 of C440 of the Microphone, circuit 1 - MD26 (White/Black), on the harness side.

• Is the resistance less than 5 ohms?

→ Yes

INSTALL the new microphone. CHECK that the system is working properly.

→ No

REPAIR the electrical circuit. CHECK the system for proper operation.

E1: CHECK THE FUNCTIONING OF THE CELL PHONE OUTSIDE THE VEHICLE

1PERFORM the audio unit self-test. For additional information, refer to Section 415-00.

2Use your cell phone while outside your vehicle.

• Does the cell phone function properly outside the vehicle?

→ Yes

Go to E2 Proceed to PINPOINT TEST E

→ No

CONTACT a Motorola Service Center and CHECK that the system is working properly.

E2: CHECK CIRCUIT 1-MD52 FOR OPEN CIRCUIT

1Disconnect the Portable Operation Support Module - C463.

2Disconnect Audio Unit - C447.

3Using a digital multimeter, measure the resistance between pin 21 of C463 Portable Mode Support Module, circuit 1 - MD52 (White/Red), harness side and pin 9 of C447 Audio Unit, circuit 1 - MD52 (White/Red), harness side.

• Is the resistance less than 5 ohms?

→ Yes

Go to E3 Proceed to PINPOINT TEST E

→ No

Repair the electrical circuit. CHECK the system for proper operation.

E3: CHECK CIRCUIT 8 - MD52 FOR OPEN CIRCUIT

1Using a digital multimeter, measure the resistance between pin 22 of C463 Portable Mode Support Module, circuit 8 - MD52 (White/Red), harness side and pin 8 of C447 Audio Unit, circuit 8 - MD52 (White/Red), harness side.

• Is the resistance less than 5 ohms?

→ Yes

INSTALL the new portable mode support module. CHECK that the system is working correctly.

→ No

REPAIR the electrical circuit. CHECK the system for proper operation.

F1: CHECK THE FUNCTIONING OF THE CELL PHONE OUTSIDE THE VEHICLE

1Use your cell phone while outside your vehicle.

• Does the cell phone function properly outside the vehicle?

→ Yes

Go to F2 Proceed to PINPOINT TEST F

→ No

CONTACT a Motorola Service Center and CHECK that the system is working properly.

F2: CHECK ELECTRICAL CIRCUIT 91S-MC19 FOR OPEN CIRCUIT

1Disconnect the Portable Operation Support Module - C463.

2Remove the Tube Bracket - C471.

3Using a digital multimeter, measure the resistance between pin 20 of C463 of the portable mode support module, circuit 91S - MC19 (Black/Green), harness side and pin 7 of C471 of the handset bracket, circuit 91S - MC19 (Black/Green), harness side.

• Is the resistance less than 5 ohms?

→ Yes

Go to F3 Proceed to PINPOINT TEST F

→ No

REPAIR the electrical circuit. CHECK the system for proper operation.

F3: CHECK 5-MC20 CIRCUIT FOR OPEN CIRCUIT

1Using a digital multimeter, measure the resistance between pin 19 of C463 of the portable mode support module, circuit 5 - MC20 (blue/yellow), harness side, and pin 6 of C471 of the handset bracket, circuit 5 - MC20 (blue/yellow), harness side.

• Is the resistance less than 5 ohms?

→ Yes

Go to F4 Proceed to PINPOINT TEST F

→ No

Repair the electrical circuit. CHECK the system for proper operation.

F4: CHECK ELECTRICAL CIRCUIT 4-MC21 FOR OPEN CIRCUIT

1Using a digital multimeter, measure the resistance between pin 18 of C463 of the portable mode support module, circuit 4 - MC21 (Gray/White), harness side, and pin 5 of C471 of the handset bracket, circuit 4 - MC21 (Gray/White), harness side.

• Is the resistance less than 5 ohms?

→ Yes

Go to F5 Proceed to PINPOINT TEST F

→ No

REPAIR the electrical circuit. CHECK the system for proper operation.

F5: CHECK ELECTRICAL CIRCUIT 5-EA10 FOR OPEN CIRCUIT

1Disconnect Audio Unit - C447.

2Using a digital multimeter, measure the resistance between pin 13 of C463 Portable Mode Support Module, circuit 5 - EA10 (Blue/Yellow), harness side and pin 2 of C447 Audio Unit, circuit 5 - EA10 (Blue/Yellow), harness side.

• Is the resistance less than 5 ohms?

→ Yes

Go to F6 Proceed to PINPOINT TEST F

→ No

REPAIR the electrical circuit. CHECK the system for proper operation.

F6: CHECK ELECTRICAL CIRCUIT 4-EA10 FOR OPEN CIRCUIT

1Using a digital multimeter, measure the resistance between pin 12 of C463 Portable Mode Support Module, circuit 4 - EA10 (Gray/Black), harness side and pin 1 of C447 Audio Unit, circuit 4 - EA10 (Gray/Black), harness side.

• Is the resistance less than 5 ohms?

→ Yes

Go to A6

→ No

Repair the electrical circuit. CHECK the system for proper operation.