F 150 2WD Pickup V8-4.6L SOHC VIN W (1998)
Multiplex Communication Network: Flow of Diagnosis
1. Verify the customer concern.
2. Visually inspect for obvious signs of electrical damage.
VISUAL INSPECTION CHART
Electrical
^
Damaged wiring hamess
^
Loose or corroded connections
^
4-wheel anti-lock brake control module
^
Remote Anti-theft Personality (RAP) module
^
Generic Electronic Module (GEM)/Central Timer Module (CTM)
^
Integrated Air Bag Diagnostic Monitor (IABM)
^
Powertrain Control Module (PCM)
^
Natural Gas Vehicle Module (NGVM)
3. If the concern remains after the inspection, connect New Generation STAR (NGS) Tester to the Data Link Connector (DLC), located beneath the
instrument panel, and select the vehicle to be tested from NGS Tester menu. If NGS Tester does not communicate with the vehicle:
^
Check that the program card is properly installed and the correct version is used.
^
Check the connections to the vehicle.
^
Check the ignition switch position.
If NGS Tester still does not communicate with the vehicle, go to Pinpoint Test J. See: Pinpoint Tests/J : No Module/Network Communication
4. Go to Pinpoint Test PC. See: Initial Inspection and Diagnostic Overview/System Precheck
