Section 31 (Engine Controls - Tests W/Codes - EEC-IV (4.6L))
WARNING: This page is about a different car, the 1994 Mercury Grand Marquis, 1994 Lincoln Town Car, 1994 Lincoln Mark VIII, and 1994 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
- Introduction
- Self-Diagnostic System
- Quick Test
- Additional System Functions
- Diagnostic Code-To-Test Reference Menus
- Diagnostic Trouble Code Definition Charts
- Circuit Tests
- Notes
- How To Use Circuit Tests
- Circuit Test Aa - No-Start - Distributor Ignition Systems
- Circuit Test Ac - No-Start - DISTRIBUTORLESS Ignition Systems (High Data Rate)
- Circuit Test B - Checking Vehicle Battery
- Circuit Test C - Reference Voltage
- Circuit Test DA - Temperature Sensor Test (IAT & ECT)
- Circuit Test Db - EGR Temperature (EGRT) Sensor
- Circuit Test Dc - Mass Airflow (MAF) Sensor
- Circuit Test Dd - EGR Position (EGRP) Sensor, EGR Vacuum
- Circuit Test De - Flex Fuel (Ff) Sensor
- Circuit Test DF - Map/Barometric Pressure (BARO) Sensor
- Circuit Test Dg - Knock Sensor (KS)
- Circuit Test DH - Throttle Position (TP) Sensor
- Circuit Test DL - Pressure Feedback EGR (PFE) Valve, Delta
- Circuit Test DN - EGR Valve Position (EVP) Sensor & EGR Valve Regulator (EVR) Solenoid
- Circuit Test DP - Vehicle Speed Sensor (VSS)
- Circuit Test Dr - Cylinder Identification (CID) Circuit
- Circuit Test FD - Brake On-Off (Boo) Switch
- Circuit Test FE - Electrical Load Inputs
- Circuit Test Ff - Power Steering Pressure (PSP) Switch
- Circuit Test G - MAF/TPS Fuel Injector Pulse Width Test
- Circuit Test H - Fuel Control
- Circuit Test Ha - Adaptive Fuel Strategy
- Circuit Test HB - Flex Fuel Control
- Circuit Test J - Fuel Pump Circuit (Relay & Inertia Switch)
- Circuit Test KA - EGR Vacuum Regulator (EVR) Solenoid
- Circuit Test Kb - Canister Purge (CANP) Valve
- Circuit Test Kc - Secondary Air Injection Solenoids (AIRB/AIRD)
- Circuit Test KD - Canister Purge (CANP)
- Circuit Test KE - Idle Air Control (IAC) Solenoid
- Circuit Test KF - Low Fan Control/High Fan Control (LFC/HFC)
- Circuit Test Km - Wide Open Throttle A/C Cut-Out (WAC) & A/C Demand Switch
- Circuit Test Kn - Fuel Pressure Reg CNTRL (FPRC) Solenoid
- Circuit Test KP - Octane Adjust
- Circuit Test Kt - Intake Manifold Runner CNTRL (IMRC) System
- Circuit Test M - Dynamic Response Test
- Circuit Test Ml - Self-Test Output (STO) Or Malfunction Indicator LT (Mil)
- Circuit Test NA - Distributor Ignition System Ignition
- Circuit Test NC - Ignition Diagnostic Monitor (IDM) DISTRIBUTORLESS Ignition System (High Data Rate)
- Circuit Test Pa - Spark Timing Check (Distributor Ignition Systems)
- Circuit Test PB - Spark Timing Check DISTRIBUTORLESS IGN System (Low Data Rate)
- Circuit Test Pc - Spark Timing Check DISTRIBUTORLESS Ignition System (High Data Rate)
- Circuit Test QA - No Codes/Codes Not Listed
- Circuit Test QB - Diagnostic Trouble Code 512
- Circuit Test QC - Output State Check Not Functioning
- Circuit Test S - System Check
- Circuit Test Ta - Clutch Pedal Position (CCP) Switch/Park/Neutral Position (PNP) Switch
- Circuit Test Tb - Transmission CNTRL SW (TCS), Transmission CNTRL SW Module (TCSM) & Trans CNTRL Indicator Light (TCIL)
- Circuit Test TC - Transmission Solenoids
- Circuit Test TD - Manual Lever Position (MLP) Sensor
- Circuit Test Te - Transmission Fluid Temperature (TFT) Sensor
- Circuit Test TF - Transmission Speed Sensor
- Circuit Test TG - Elect Trans Continuous Mem Diag Trouble Codes
- Circuit Test X - Constant Control Relay Module (CCRM)
- Circuit Test XB - Variable Control Relay Module (VCRM)
- Summary
- Wiring Diagrams