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Engine Controls - Basic Diagnostic Procedures Expand All (for easy ctrl-f) Collapse All Introduction Preliminary Inspection & Adjustments Fuel System Preliminary Checks Fuel Pressure Check Thick Film Ignition IV (TFI) Ignition System Checks Dis Ignition System Check - No Start (2.3L) DISTRIBUTORLESS Ignition System (Dis) - No Start Check (2.3L) Test 1, Check ECA For Fault Codes Test 2, Check For Spark During Crank Test 3, Check Dis Module Pip Out Test 4, Check Pip Out Continuity Test 5, Determine Missing Spark Combination Test 6, Check Plugs & Wires Test 7, Check Dis Module VBAT Test 8, Check Dis Module Ignition Ground Test 9, Check Dis Module Mounting Screws Test 10, Check Right Coil Pack Circuits Test 11, Right Coil Pack Fault, Isolate Dis Module Test 12, Check Right Coil Pack VBAT Test 13, Check Right Coil Circuit Test 14, Check Pip D At Dis Module Test 15, Check Dis Module Coil Drivers Test 16, Check Right Coil Pack VBAT Test 17, Check Right Coil Circuit Test 18, Check Right Coil Circuit Test 19, Isolate Dis Module From Pip D Test 20, Check Crankshaft Sensor VBAT Test 21, Check Crankshaft Sensor Ignition Ground Test 22, Check Crankshaft Sensor Pip S Test 23, Check Pip Circuit For Short To Ground Test 24, Check Pip Circuit For Short To VBAT Test 25, Check Crankshaft Vane Test 26, Isolate EEC-IV Processor (ECA) From Pip Circuit Test 27, Check Pip EEC Circuit For Short To VBAT Test 28, Check Pip EEC Circuit For Short To Ground DISTRIBUTORLESS Ignition System (Dis) - No Start (4.0L) Notes Test 1, Check ECA For Fault Codes Test 2, Check For Spark During Crank Test 3, Check Pip At EDIS Module Test 4, Check Pip Continuity To EEC Test 5, Check IGND At EDIS Test 6, Check IGND Continuity To EEC Test 7, Check Pip At EDIS Module/Isolate EEC Test 8, Check Pip Circuit For Short To Ground Test 9, Check Pip Circuit For Short To Power Test 10, Determine Missing Spark Pattern Test 11, Check Plugs & Wires Test 12, Check VBAT C At Coil Test 13, Check Coil For Failure Test 14, Check GND Continuity To EDIS Module Test 15, Check GND In EDIS Module Test 16, Check VBAT E At EDIS Module Test 17, Check VRS Amplitude At EDIS Module Test 18, Check VRS Bias At EDIS Module Test 19, Check VRS Cranking Voltage At EDIS Test 20, Check VRS Cranking Voltage At Sensor Test 21, Check VR Sensor & Crankshaft Wheel Test 22, Check VRS+ Circuit For Open Test 23, Check VRS- Circuit For Open Test 24, Check VRS Circuit For Short To Power Test 25, Check VRS- Circuit For Short To Ground Test 26, Check VRS+ Circuit For Short To Ground Test 27, Check VRS+ Circuit For Short To Power Test 28, Check VRS Bias At EDIS Module Test 29, Check VRS+ Circuit For Short To Power Test 30, Check VRS+ Circuit For Short To Power Test 31, Check VRS- Circuit For Short To Power Test 32, Check VRS- Circuit For Short To Ground Ignition Coil Resistance Idle Speed & Ignition Timing Throttle Position Sensor (TPS) Adjustment Summary