Explorer 4WD V6-4.0L VIN E (1999)
Audible Warning Device: Initial Inspection and Diagnostic Overview
1. The warning lamps are a GEM/CTM controlled system.
NOTE: The Generic Electronic Module (GEM)/Central Timer Module (CTM) must be reconfigured upon replacement. Refer to the New
Generation STAR (NGS) Tester help screen on the configuration card to program the tire size and axle ratio.
2. Verify the customer concern by operating the system in question.
3. Visually inspect for the following obvious signs of mechanical and electrical damage.
VISUAL INSPECTION CHART
Mechanical
^
Switch(es)
Electrical
^
Fuse(s)
^
Damaged wiring harness
^
Loose or corroded connections
^
Circuitry
^
Bulb
4. If the concern remains after the inspection, connect the New Generation STAR (NGS) Tester to the Data Link Connector (DLC) located beneath
the instrument panel and select the vehicle to be tested from the NGS menu. If the NGS does not communicate with the vehicle:
^
check that the program card is properly installed.
^
check the connections to the vehicle.
^
check the ignition switch position.
5. If the NGS still does not communicate with the vehicle, refer to the New Generation STAR Tester manual.
6. Perform the DATA LINK DIAGNOSTIC TEST. If NGS Tester responds with:
^
CKT914, CKT915 or CKT70 - ALL ECUS NO RESP/NOT EQUIP, refer to Information Bus.
^
NO RESP/NOT EQUIP for GEM/CTM, go to Pinpoint Test E. See: Pinpoint Tests/E: No Communication With The GEM/CTM
^
SYSTEM PASSED, retrieve and record the continuous Diagnostic Trouble Codes (DTCs), erase the continuous DTCs and perform self-test
diagnostics for the GEM/CTM.
7. If the DTCs retrieved are related to the concern, go to the GEM/CTM Diagnostic Trouble Code (DTC) Index to continue diagnostics. See:
Diagnostic Trouble Code Descriptions/GEM/CTM Diagnostic Trouble Code (DTC) Index
8. If no DTCs related to the concern are retrieved, proceed to Symptom Chart to continue diagnostics. See: Symptom Related Diagnostic Procedures
