Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1999F 150 2WD PICKUP V6-4.2L VIN 2REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSINFORMATION BUSTESTING AND INSPECTIONFLOW OF DIAGNOSISMODULE COMMUNICATION NETWORK
1999 Ford F 150 2WD Pickup V6-4.2L VIN 2
Module Communication Network
1999 Ford F 150 2WD Pickup V6-4.2L VIN 2SECTION 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
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
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.