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419-10 Multifunction Electronic Modules > < Navigation System Module

Mondeo 1997 (08.1996-09.2000)

Cellular Phone - Cellular Phone Mondeo 1997 (08/1996-09/2000)
Diagnosis and Testing

Refer to Wiring Diagrams Section 419-08, for schematic and connector information.

Inspection and Verification

  1. Verify the customers concern.
  1. Visually inspect for obvious signs of electrical damage.

Visual Inspection Chart

Electrical
Fuse(s)
Wiring Harness
Electrical connector(s)
Microphone
Cellular phone antenna
Cellular phone speaker
Handset holder
Cellular phone
Portable Support Electronics (PSE) Module
  1. Verify that the cellular phone operates correctly out of the vehicle before proceeding to the next step.
  1. Verify the audio unit or navigation system display module is working correctly before proceeding to the next step.
  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  1. If the cause is not visually evident, verify the symptom and refer to the Symptom Chart.

Symptom Chart

Symptom Chart

Symptom Possible Sources Action
The handset battery does not charge
*
Circuit(s).
*
Handset holder.
*
Cellular phone.
*
PSE Module.
*
GO to Pinpoint Test A. .
Interference from the cellular phone speaker - vehicles with navigation system
*
Incorrect navigation system display module settings.
*
MAKE sure that MUTE is selected in the navigation system display module RADIO MODE. TEST the system for normal operation.
Reduced sound or no sound through the speakers
*
Circuit(s).
*
Cellular phone speaker.
*
Handset holder.
*
PSE Module.
*
GO to Pinpoint Test B. .
No SVC display stays on
*
Cellular phone antenna.
*
Handset holder.
*
GO to Pinpoint Test C. .
The hands-free system is inoperative
*
Cellular phone and handset holder electrical connectors.
*
CHECK the cellular phone is correctly installed into the handset holder. TEST the system for normal operation.
Microphone sensitivity too low (user is difficult to hear when making calls)
*
Microphone incorrectly adjusted.
*
INCREASE the microphone sensitivity on the PSE module during a conversation.
*
Microphone location incorrect.
*
CHECK the location of the microphone. INSTALL the microphone in the correct location if necessary.
Microphone sensitivity too high (user hears their own voice when making calls)
*
Microphone incorrectly adjusted.
*
DECREASE the microphone sensitivity on the PSE module during a conversation.
Whistling noise when the cellular phone is in use
*
Microphone incorrectly adjusted.
*
DECREASE the microphone sensitivity on the PSE module during a conversation.
The cellular phone speaker operates but the audio unit speakers do not mute.
*
Electrical connection to the navigation system display module.
*
Threshold voltage to the navigation system display module is not achieved.
*
INSTALL a new PSE module wiring harness. TEST the system for normal operation. If the concern persists, INSTALL a new PSE module. TEST the system for normal operation.
*
Audio unit or navigation system display module.
*
INSTALL a new audio unit.
*
INSTALL a new navigation system display module.

Pinpoint Test

PINPOINT TEST A : THE HANDSET BATTERY DOES NOT CHARGE
TEST CONDITIONS DETAILS/RESULTS/ACTIONS
A1: CHECK THE POWER SUPPLY TO THE PSE MODULE
1
Disconnect PSE Module C1002.
2
Ignition switch in position I.

3
Measure the voltage between the PSE module C1002 pin 4, harness side and ground; and the PSE module C1002 pin 5, harness side and ground.

Are the voltages greater than 10 volts?
Yes
GO to A3. .
No
GO to A2. .
A2: CHECK THE PSE MODULE WIRING HARNESS FOR OPEN
1
Disconnect PSE Module Wiring Harness.
2
Ignition switch in position I.

3
Measure the resistance between the PSE module C1002 pin 4, harness side and PSE module wiring harness, pin 6, harness side; and the PSE module C1002 pin 5, harness side and PSE module wiring harness, pin 6, harness side.

Are the resistances less than 5 ohms?
Yes
GO to A3. .
No
REPAIR the circuit. TEST the system for normal operation.
A3: CHECK THE PSE MODULE FOR GROUND

1
Measure the resistance between the PSE module C1002 pin 6, harness side and ground; and the PSE module C1002 pin 3, harness side and ground.

Are the resistances less than 5 ohms?
Yes
CLEAN the handset holder and cellular phone electrical connectors. TEST the system for normal operation. If the concern persists, INSTALL a new handset holder. TEST the system for normal operation. If the concern persists, INSTALL a new PSE module.
No
INSTALL a new PSE module wiring harness. TEST the system for normal operation.

PINPOINT TEST B : REDUCED SOUND OR NO SOUND THROUGH THE SPEAKERS
TEST CONDITIONS DETAILS/RESULTS/ACTIONS
B1: CHECK THE CELLULAR PHONE SPEAKER
1
Disconnect Cellular Phone Speaker.

2
Measure the resistance between the speaker terminals (component side).

Is the resistance between 3 and 5 ohms?
Yes
REPAIR if necessary the circuit between the cellular phone speaker and the PSE module. TEST the system for normal operation. If the concern persists, CLEAN the handset holder and cellular phone electrical connectors. TEST the system for normal operation. INSTALL a new handset holder. TEST the system for normal operation. If the concern still persists, INSTALL a new PSE module. TEST the system for normal operation.
No
INSTALL a new cellular phone speaker. TEST the system for normal operation.

PINPOINT TEST C : NO SVC DISPLAY STAYS ON
TEST CONDITIONS DETAILS/RESULTS/ACTIONS
C1: CHECK THE HANDSET HOLDER ANTENNA CABLE FOR OPEN
1
Disconnect Handset Holder Antenna Cable.

2
Measure the resistance between the center pin of the handset holder antenna connection and the center pin of the antenna cable connector.

Is the resistance less than 1 ohm?
Yes
TEST the system for normal operation.
No
INSTALL a new handset holder. TEST the system for normal operation.

419-10 Multifunction Electronic Modules > < Navigation System Module