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Home >> Ford >> 1999 >> F 150 4WD Pickup V6-4.2L VIN 2 >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Flow of Diagnosis >> Module Communication Network
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Module Communication Network

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

VISUAL INSPECTION CHART

Electrical
- Central Junction Box (CJB) Fuse 3 (25 A)
- Damaged wiring harness
- 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)
- Restraint control module (RCM)
- Powertrain control module (PCM)
- Natural gas vehicle module (NGVM)
- Instrument cluster

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. J: Module/Network Communication - No Power to the NGS Tester

4. Go to Pinpoint Test PC. System Precheck

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