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Engine Controls - Basic Diagnostic Procedures
- 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