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.
1986 Mercury Lynx XR3FACTORY OEM SERVICE PROCEDURE
1.9L/2.3L Turbo Testing
- Diagnosis & Testing
- Quick Tests
- Circuit Tests
- How To Use Circuit Test
- Test A - No Start
- Test B - Vehicle Battery
- Test C - Reference Voltage
- Test D - Vane Air Temperature (Vat) Sensor
- Test G - Engine Coolant Temperature (ECT) Sensor
- Test H - BP Sensor (Barometric Pressure Sensor)
- Test I - Knock Sensor (2.3L EFI Turbo)
- Test J - Throttle Position Sensor (TPS)
- Test K - Vane Airflow (VAF) Sensor
- Test M - Neutral-A/C Switch
- Test N - Key Power Check
- Test O - Brake On/Off (Boo) Switch
- Test Q - Fuel Control
- Test V - Inertia Switch (Fuel Pump Circuit Inertia Switch)
- Test W - EGR On/Off Check
- Test Y - Canister Purge (CANP) Check
- Test Z - By-Pass Air (Idle Speed Control)
- Test Cc - Inlet Air Solenoid (IAS)
- Test Dd - Variable Voltage Choke (VVC)
- Test Ee - Temperature Compensated Pump (TCP)
- Test GG - Wot-A/C Cut-Out (Wide Open Throttle-A/C Cut-Out (WAC) - A/C Demand
- Test HH - Turbo Boost
- Test JJ - Converter Clutch Override (CCO)
- Test KK - Dynamic Response Test
- Test Ll - Ignition Diagnostic Monitor (IDM)
- Test Mm - Spark Timing Check
- Test NN - No Codes/Codes Not Listed
- Test Oo - Erratic Ignition
- Test SS - System Check
- Test TT - AXOD Transaxle
- AXOD Transaxle Electrical System Diagnosis
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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