Ranger 2WD L4-153 2.5L SOHC VIN C SFI (1998)
Audible Warning Device Control Module: Testing and Inspection
Initial Inspection and Diagnostic Overview
NOTE: The GEM/CTM must be reconfigured upon replacement. Refer to NGS Tester help screen on the configuration card to program the tire size,
and axle ratio.
1. The warning lamps are a Generic Electronic Module (GEM)/Central Timer Module (CTM) controlled system.
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
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 vehicles refer to the New Generation STAR Tester manual.
6. Perform the DATA LINK DIAGNOSTIC TEST. If the NGS 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: Diagnostic Trouble Code Tests and Associated Procedures/Test E: All the
Chimes Are Inoperative
^
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 GEM/CTM Diagnostic Trouble Code (DTC) Index See: Diagnostic Trouble Code
Descriptions to continue diagnostics.
8. If no DTCs related to the concern are retrieved, See: Symptom Related Diagnostic Procedures
Diagnostic Trouble Code Index - Gem/CTM
