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 MANUALSFORD2003WINDSTAR BASEREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM TEST JE THROUGH Z - CNG, FLEX-FUEL & GASOLINE
2003 Ford Windstar Base
Engine Controls - System Test JE Through Z - CNG, Flex-Fuel & Gasoline
2003 Ford Windstar BaseSECTION Engine Controls - System Test JE Through Z - CNG, Flex-Fuel & Gasoline
- Test JE: Integrated Ignition Coil Failure
- Test JF: Integrated Ignition Coil On Plug Failure
- Test JH: Tachometer Output Failure
- Test KA: Fuel Pump Relay
- Test Kb: Fuel Pump Driver Module
- Test Kc: Fuel Shutoff Valve Relay
- Test KD: Electric Exhaust Gas RECIRCULATION
- Test KE: Idle Air Control Valve
- Test KF: Fan Control Relay
- Test Kg: VISCTRONIC Drive Fan Clutch
- Test KJ: Supercharger By-Pass Control
- Test Kl: Shift Indicator Light
- Test Km: A/C Clutch Relay & A/C Circuits
- Test Kn: Variable Speed Electric Cooling Fan
- Test KP: Charge Air Cooler Pump
- Test KQ: Thermostat Heater Control
- Test NB: Malfunction Indicator Light
- Test NC: Ignition Engine Speed Input Circuit
- Test ND: Engine Rpm/Vehicle Speed Limiter
- Test QA: Unable To Activate Self-Test/SCP Communication Error/DTC Not Listed
- Test QB: KOEO DTC P0603 Or KOEO, KOER & Continuous Memory DTC P1633
- Test QC: OBD-II Monitor Testing Not Complete; DTC P1000
- Test QD: DTC P1260
- Test Ta: Park/Neutral Position Or Clutch Pedal Position Switches
- Test Tb: Transmission Control Switch/Transmission Control Indicator Lamp
- TEST TG: 4x4 LOW RANGE
- Test Th: Reverse Switch
- Test TJ: Output Shaft Speed Sensor
- Test X: Constant Control Relay Module
- Test Z: Intermittent
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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.