Section 1 (2.5L HSC/CFI Testing)
WARNING: This page is about a different car, the 1987 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
- Diagnosis & Testing
- Quick Test
- Diagnosis By Symptom Test
- Wiring Diagrams
- Circuit Tests
- How To Use Circuit Tests
- Test A - No Start
- Test B - Vehicle Battery
- Test C - Reference Voltage
- Test D - Vane Air Temperature (Vat) Sensor
- Test E - Air Charge Temperature (Act) Sensor
- Test F - EGR Valve Position (EVP) Sensor, EGR Control (EGRC) Solenoid & EGR Vent (EGRV) Solenoid
- Test G - Engine Coolant Temperature (ECT) Sensor
- Test H - Map Sensor
- Test J - Throttle Position Sensor (TPS)
- Test L - Pressure Feedback EGR (PFE) & EGR Valve Regulator (EVR)
- Test M - EVP & EVR4
- Test N - Vehicle Speed Sensor (VSS)
- Test O - Neutral A/C Switch
- Test P - Key Power Check
- Test S - Fuel Control
- Test Q - Brake On/Off (Boo)
- Test R - PSPS
- Test W
- Test Y - Fuel Pump Circuit (Inertia Switch)
- Test Z - EGR On/Off Control
- Test Cc - CANP Check
- Test Ee - Idle Speed Control
- Test Ff - Shift Indicator Light
- Test GG - Wide Open Throttle A/C Cut-Out (WAC) A/C Demand
- Test JJ - Converter Clutch Override (CCO)
- Test KK - Converter Clutch Override (CCO) & 3/4-4/3 Shift Solenoid
- Test Ll - Dynamic Response Test
- Test Mm - "Check Engine"
- Test NN - Ignition Diagnostic Monitor (IDM)
- Test Oo - Spark Timing Check
- Test Pp - No Codes/Codes Not Listed
- Test QQ - System Check
- Test RR - AXOD Transaxle
- Test SS - IRCM
- Test TT - Erratic Ignition
- AXOD Transaxle Electrical System Diagnosis
- DRIVEABILITY Tests