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 MANUALSFORD1999RANGER 2WD V6-3.0L VIN UREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSINFORMATION BUS
1999 Ford Ranger 2WD V6-3.0L VIN U
Information Bus
1999 Ford Ranger 2WD V6-3.0L VIN USECTION Information Bus
Description and Operation
Testing and Inspection- Module Communication Network
- Inspection and Verification (Start Here)
- Diagnostic Schematic and Connector Information
- Diagnostic Special Service Tool(s)
- Principles of Operation (How Does It Work?)
- System Precheck
- Pinpoint Tests
- A: No Response to the NGS Tester - 4-Wheel ABS Control Module
- B: No Response to the NGS Tester - (GEM)/(CTM)
- C: Does Not Respond to the NGS Tester - (RCM)
- D: The Module Does Not Respond to the NGS Tester - (RAP)
- E: The PCM Does Not Respond to the NGS Tester
- F: The Module Does Not Respond to the NGS Tester - (PATS)
- G: No Module/Network Communication - ISO 9141 Network
- H: No Module/Network Communication - SCP Link
- I: No Module/Network Communication - No Power to the NGS
- Symptom Chart
- Module Configuration
- Module Communication Network
Service and Repair
Diagrams
Specifications
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.