4.3L TBI Tests W/Codes

• Model Identification
• Description
• Diagnostic System Operation
  • Notes
  • "Hard Failures"
  • "Intermittent Failures"
• Basic Diagnostic Procedure
• Entering Or Exiting Diagnostic Mode (Non-Scan)
• Reading Trouble Codes
• ECM Trouble Code Definitions
• Trouble Code Determination (Hard Or Intermittent)
• Clearing Trouble Codes
• Diagnostic Materials
  • Notes
  • Diagnostic Charts
  • Diagnostic Aids
  • Field Service Mode Check (Fuel Injected Models)
• Special Diagnostic Tools
• Scan Tester Usage
• Scan Tester - Test Data Parameters
• "Non-Scan" Diagnostic Circuit Check
• "Scan" Diagnostic Circuit Check
• Chart A1 - No "Service Engine Soon" Light
• Chart A2 - Won't Flash Code 12 "SES" Light On
  • Won't Flash Code 12 "Service Engine Soon" ("SES") Light On
• Charts A3 & A4 - Engine Cranks, But Will Not Run
  • Chart A3 - Engine Cranks, But Will Not Run
  • Chart A4 - Engine Cranks, But Will Not Run (Cont.)
• Chart A5 - Fuel System Diagnosis
  • Chart A5 - Fuel System Diagnosis (1 Of 2)
  • Chart A5 - Fuel System Diagnosis (2 Of 2)
• Code 13 - Open Oxygen (O2) Sensor Circuit
• Code 14 - Coolant Sensor Signal Voltage Low
• Code 15 - Coolant Sensor Signal Voltage High
• Code 21 - TPS Signal Voltage High
• Code 22, TPS Signal Voltage Low
• Code 24 - Vehicle Speed Sensor (VSS)
• Code 32 - EGR System Failure
• Code 33 - Map Sensor Signal Voltage High
• Code 34 - Map Sensor Signal Voltage Low
• Code 42 - Electronic Spark Timing (Est)
• Code 43 - Electronic Spark Control (ESC)
• Code 44 - Lean Exhaust Indication
• Code 45 - Rich Exhaust Indication
• Code 51 - Faulty Prom
• Code 52 - Fuel Calpac Missing
• Code 54 - Fuel Pump Circuit Low Voltage
• Code 55 - Faulty ECM
• Chart B1 - Restricted Exhaust System Check
  • (All Vehicles With Air Or PULSAIR)
  • All Vehicles Without Air Or PULSAIR
• Chart C1 - ECM Replacement Check Chart
• Chart C1A - Park/Neutral Switch (Auto Trans. Only)
• Chart C1B - Crank Signal
• Chart C1D - Map Output Check
• Chart C2C - Idle Air Control (IAC)
• Chart C3 - Canister Purge Check
• Chart C4B - Ignition System Check
• Chart C5 - Electronic Spark Control (ESC) System Check
• Chart C6B - Air Management Check (PEDES Valve)
• Chart C7 - EGR Check
• Chart C8 - 200-4R Torque Converter Clutch Diagnosis
• Chart C9C - EFE Vacuum Servo Check (Models With TVS)
• Component Locations
• Terminal Identification
• Wiring Diagram