Contents Section: Warning System All sections

Warning Devices Ford Explorer Sport Trac I

Warning System 27 illustrations ~1426 words

The warning device system consists of the following components

  1. Generic Electronic Module (GEM)
  2. Ignition Warning Switch
  3. Door Ajar Switch
  4. Belt Minder Module (BMM) (Early Production)

There are five warning chimes and lamps the generic electronic module (GEM) controls

headlamps operating without the ignition on (chime only), door ajar (chime and lamp), key-in-ignition (chime only), driver safety belt warning (chime and lamp), and belt minder (chime and lamp) (late production).

The belt minder is a supplemental warning function operating the driver safety belt warning lamp and chime.

Scheme 1

Scheme 1: Audible Warnings

For removal and installation of the Generic Electronic Module (GEM), refer to GENERIC ELECTRONIC MODULE (GEM) in MULTIFUNCTION ELECTRONIC CONTROL MODULES article.

For removal and installation of the door ajar switch, refer to DOOR AJAR SWITCH in HANDLES, LOCKS, LATCHES & ENTRY SYSTEMS article.

Wiring Diagrams

For Explorer Sport wiring diagrams, see WARNING SYSTEMS in SYSTEM WIRING DIAGRAMS article. For Explorer Sport Trac wiring diagrams, see WARNING SYSTEMS in SYSTEM WIRING DIAGRAMS article.

Scheme 2

Scheme 2: Special Tools

Safety Belt Warning Chime

The safety belt warning chime alerts that the safety belt is not fastened. The safety belt chime will sound when the driver safety belt is not fastened and the ignition switch is turned from the OFF to the RUN or START position. The safety belt warning chime will stop when the safety belt is fastened, when the ignition is switched to the OFF position or after the chime has sounded for six seconds.

The safety belt warning chime inputs are

  1. Ignition Switch Position
  2. Driver Safety Belt Switch

The output for the safety belt warning chime is the GEM.

Belt Minder

The belt minder feature is configurable. For additional information, refer to MODULE CONFIGURATION . To configure without using a diagnostic tool, refer to BELT MINDER DEACTIVATING/ACTIVATING under GENERAL PROCEDURES.

The belt minder feature supplements the current safety belt warning function. The belt minder feature is enabled after the current safety belt warning is complete. The belt minder reminds the driver that their safety belt is unbuckled by intermittently sounding a chime and illuminating the safety belt warning lamp in the instrument cluster once the vehicle speed has exceeded three mph. While activated, the belt minder alternates the chime and indicator from ON for 6 seconds to OFF for 30 seconds.

The belt minder feature stops when

  1. The driver safety belt is buckled.
  2. The ignition switch is turned to OFF or ACC.
  3. Five minutes have elapsed since belt minder has started.

Door Ajar Warning Chime

The door ajar warning chime alerts when any door becomes ajar while the ignition is in the OFF position.

The door ajar warning will stop when the door is closed or when the ignition switch is turned OFF.

The door ajar warning chime inputs are

  1. Ignition switch in the RUN position.
  2. Door open switches.

The output for the door ajar warning chime is the GEM.

Headlamp On Warning Chime

The headlamp on warning chime alerts that the headlamps are on with the driver door open and the ignition switch in the OFF position.

The warning chime will stop when any of the above conditions are removed.

The headlamp on warning chime inputs are

  1. Ignition Switch
  2. Headlamp Switch
  3. Driver Door Switch

Scheme 3

Scheme 3: Inspection & Verification
  1. The warning lamps are a GEM controlled system; refer to «MULTIFUNCTION ELECTRONIC CONTROL MODULES»(/ford/explorer-sport-trac/i-2000-2005/remont/communication-devices/#multifunction-electronic-control-modules) .
  2. Verify the customer concern by operating the system.
  3. Visually inspect for obvious signs of mechanical and electrical damage.
  4. If the concern remains after the inspection, connect the diagnostic tool to the data link connector (DLC) located beneath the instrument panel and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle: Check that the program card is correctly installed. Check the connections to the vehicle. Check the ignition switch position.
  5. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool manual.
  6. Carry out the DATA LINK DIAGNOSTIC TEST. If diagnostic tool responds with: CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, refer to «MODULE COMMUNICATIONS NETWORK»(/ford/explorer-sport-trac/i-2000-2005/remont/communication-devices/#module-communications-network) . NO RESP/NOT EQUIP for GEM, refer to «MULTIFUNCTION ELECTRONIC CONTROL MODULES»(/ford/explorer-sport-trac/i-2000-2005/remont/communication-devices/#multifunction-electronic-control-modules) . SYSTEM PASSED, retrieve and record the continuous Diagnostic Trouble Codes (DTCs), erase the continuous DTCs and carry out the self-test diagnostics for the GEM.
  7. If the DTCs retrieved are related to the concern, go to the GEM/CTM Diagnostic Trouble Code (DTC) Index to continue diagnostics. See «GEM/CTM DIAGNOSTIC TROUBLE CODE (DTC) INDEX»(/ford/explorer-sport-trac/i-2000-2005/remont/warning-system/#warning-devices__gemctm-diagnostic-trouble-code-dtc-index) .
  8. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue diagnostics. See «GAUGES & WARNING DEVICES SYMPTOM CHART»(/ford/explorer-sport-trac/i-2000-2005/remont/warning-system/#warning-devices) .

GEM/CTM Diagnostic Trouble Code (DTC) Index

DTCDescriptionSourceAction
B1342GEM is DefectiveGEMCLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved, INSTALL a new GEM. REFER to MULTIFUNCTION ELECTRONIC CONTROL MODULES .
B1352Ignition Key-In Circuit FailureGEMGO to PINPOINT TEST C .
B1462Safety Belt Switch Circuit FailureGEMGO to PINPOINT TEST A .
B1577Lamp Park Input Circuit Short to BatteryGEMGO to PINPOINT TEST B .

GEM/CTM DIAGNOSTIC TROUBLE CODE (DTC) INDEX

Note. For a complete master list of all GEM DTCs, refer to MULTIFUNCTION ELECTRONIC CONTROL MODULES .

ConditionPossible SourcesAction
The safety belt warning chime does not operate correctlySafety belt buckle switch. Circuitry. Generic electronic module (GEM).GO to PINPOINT TEST A .
The headlamp on reminder chime does not operate correctlyHeadlamp switch. Circuitry. LF door ajar warning switch. GEM.GO to PINPOINT TEST B .
The belt minder feature does not operate correctly (late production)Safety belt buckle switch. Circuitry. GEM.GO to PINPOINT TEST A .
The key-in-ignition chime does not operate correctlyKey-in-ignition warning switch. Circuitry. GEM.GO to PINPOINT TEST C .
The door ajar warning chime does not operate correctlyDoor ajar warning switch. Circuitry. GEM.GO to PINPOINT TEST D .
No communication with the GEMCentral junction box (CJB) fuses: 20 (7.5A). 25 (7.5A). Circuitry. GEM.REFER to MULTIFUNCTION ELECTRONIC CONTROL MODULES .
The belt minder feature does not operate correctly (early production)Safety belt switch buckle. CJB fuse 11(7.5A). Circuitry. Belt minder module (BMM).Go To PINPOINT TEST E .
The belt minder feature does not operate correctly - cannot be reconfigured (early production)Safety belt buckle switch. Headlamp switch Circuitry. BMM.Go To PINPOINT TEST F .

SYMPTOM CHART

Pinpoint Tests

CAUTIONBefore removing and installing the GEM or its connectors, disconnect the battery. Failure to follow this caution will result in the GEM storing many erroneous DTCs, and it may exhibit erratic operation after installation.
CAUTIONBe careful when probing the battery junction box (BJB), central junction box (CJB) or any connectors. Damage will result to the connector receptacle if the probe or terminal being used is too large.
CAUTIONElectronic modules are sensitive to static discharges. If exposed to these charges, damage may result.

Note. If continuous DTCs are recorded and the symptom is not present when carrying out the pinpoint tests, an intermittent concern may be the cause. Always check for loose connections and corroded terminals.

Complete the entire pinpoint test related to the symptom before installing a new GEM.

Pinpoint Test A: The Safety Belt Warning Chime Does Not Operate Correctly

Note. Verify the belt minder is activated before diagnosing.

Scheme 4

Scheme 4: Pinpoint Test A: The Safety Belt Warning Chime Does Not Operate Correctly

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Scheme 7

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Scheme 8

Scheme 8: Pinpoint Test B: The Headlamp On Reminder Chime Does Not Operate Correctly

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Scheme 12

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Scheme 13

Scheme 13: Pinpoint Test C: The Key In Ignition Warning Chime Does Not Operate Correctly

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Scheme 17

Scheme 17: Pinpoint Test D: The Door Ajar Chime Does Not Operate Correctly

Scheme 18

Scheme 18

Pinpoint Test E: The Belt Minder Feature Does Not Operate Correctly - Early Production

Note. Verify the belt minder is activated before diagnosing.

Scheme 19

Scheme 19: Pinpoint Test E: The Belt Minder Feature Does Not Operate Correctly - Early Production

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Scheme 22

Scheme 22: Pinpoint Test F: The Belt Minder Feature Does Not Operate Correctly - Cannot Be Reconfigured - Early

Scheme 23

Scheme 23

Preparation

  1. Before deactivating/activating the belt minder, set the parking brake.
  2. Place the transmission range selector lever in P (PARK) (automatic transmission) or the NEUTRAL position (manual transmission).
  3. Place the ignition switch in the OFF position.
  4. Close all the vehicle doors.
  5. Unbuckle the driver safety belt.
  6. Place the parking lamps/headlamps switch in the OFF position.

Deactivating/Activating

  1. Start with the ignition OFF and the driver and passenger safety belts unbuckled.
  2. Turn the ignition to RUN (it is not required to start the vehicle.)
  3. Wait until the seatbelt warning lamp turns off (approximately one minute.)
  4. Buckle then unbuckle the driver or passenger seatbelt nine times, ending in the unbuckled state. Step 4 must be completed within 60 seconds.
  5. After Step 4 is complete the airbag warning lamp will be turned on for three seconds.
  6. After the airbag warning lamp turns off, buckle/then unbuckle the safety belt again. This will enable the belt-minder if it is currently disabled, or will disable the belt-minder if it is currently enabled.
  7. Confirmation of enabling the belt-minder is provided to the customer by the airbag warning lamp flashing four times per second for three seconds, followed by three seconds again.
  8. Confirmation of disabling the belt-minder is provided to the customer by the airbag warning lamp flashing four times per second for three seconds.
  9. Customer programming of the belt-minder is automatically exited after completion of the customer confirmation.
  10. The belt-minder will automatically exit the programming mode without changing its enable status if Step 6 does not occur within 10 seconds of the end of Step 4.
  11. Performing Steps 1-12 using only the driver safety belt will permanently enable/disable the driver belt-minder feature.
  12. Performing Steps 1-12 using only the passenger safety belt will permanently enable/disable the passenger belt-minder feature.
  13. Only one side (driver or passenger) can be enabled/disabled per key cycle. While programming the driver side, any activity on the passenger safety belt will abort the programming the passenger side, any activity on the driver safety belt will terminate the programming sequence.
  14. The programming sequence will abort if a system fault occurs that requires the illumination of the RIL at any time during programming or confirmation.

Scheme 24

Scheme 24: Removal

Scheme 25

Scheme 25
  1. Remove the ignition switch lock cylinder. Insert the ignition key and turn to the RUN position. Insert a punch in the access hole of the steering column and press the release tab while pulling out the ignition switch lock cylinder.
  2. Remove the key-in-ignition warning switch. Pry the clip down. Push the key-in-ignition warning switch off the rear of the ignition switch lock cylinder.

Scheme 26

Scheme 26: Installation
  1. To install, reverse the removal procedure. Verify ignition switch lock cylinder operation.

Scheme 27

Scheme 27: MODULE - BELT MINDER
  1. Remove the audio unit.
  2. Remove the belt minder module. Disconnect the electrical connectors. Remove the screws. Remove the pin-type retainer.