V6/V8 PFI 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
  • Diagnostic Charts
  • Diagnostic Aids
• Field Service Mode Check (Fuel Injected Models)
• Special Diagnostic Tools
• Scan Tester Usage
• Scan Tester - Test Data Parameters
• Diagnostic Circuit Check (All Engines)
  • Notes
  • Diagnostic Circuit Check Procedures
• "Scan" Diagnostic Circuit Check
• Diagnostic Charts
  • Chart A1 - No "SES" Light (2.8L & 5.0L)
  • Chart A1 - No "Service Engine Soon" Light (5.7L)
  • Chart A2 - No Code 12 "SES" Light On Steady (2.8L)
  • Chart A2 - No Code 12 "SES" Light On Steady (5.0/5.7L)
  • Charts A3A & A3B - Engine Cranks, But Won't Run (All Engines)
  • A3B - Engine Cranks, But Won't Run (Cont.) (All Engines)
  • Chart A7A - Fuel System Diagnosis (All Engines)
  • Chart A7B - Fuel System Diagnosis (All Engines)
  • Chart A9 - Cold Start Valve (All Engines)
  • Code 13 - Open Oxygen (O2) Sensor Circuit (All Engines)
  • Code 14 - Cts Signal Voltage Low (All Engines)
  • Code 15 - Cts Signal Voltage High (All Engines)
  • Code 21 - TPS Signal Voltage High (All Engines)
  • Code 22 - TPS Signal Voltage Low (All Engines)
  • Code 23 - Mat Sensor Signal Voltage High (All Engines)
  • Code 24 - Vehicle Speed Sensor (VSS) (All Engines)
  • Code 25 - Mat Sensor Signal Voltage Low (All Engines)
  • Code 32 - EGR System Failure (2.8L)
  • Code 32 - EGR System Failure (5.0/5.7L)
  • Code 33 - MAF Signal Voltage High (2.8L)
  • Code 33 - MAF Signal Voltage High (5.0/5.7L)
  • Code 34 - MAF Sensor Signal Voltage Low (2.8L)
  • Code 34 - Map Sensor Signal Volt Lo (2.8L, P-Body)
  • Code 34 - MAF Sensor Signal Voltage Low (5.0/5.7L)
  • Code 36 - MAF Sensor Burn-Off (5.0/5.7L)
  • Code 41 - Cylinder Select Error (2.8L)
  • Code 41 - Cylinder Select Error (5.0/5.7L)
  • Code 42 - Electronic Spark Timing (All Engines)
  • Code 43 - Electronic Spark Control (ESC) (5.0/5.7L)
  • Code 44 - Lean Exhaust Indication (All Engines)
  • Code 45 - Rich Exhaust Indication (All Engines)
  • Code 46 - Vehicle Anti-Theft System (Vats) (Corvette)
  • Code 51 - Faulty Mem-Cal
  • Code 53 - System Over Voltage
  • Code 54 - Fuel Pump Circuit Low Voltage (All Engines)
  • Chart C1 - ECM Replacement Check Chart
  • Chart C1A - Park Neutral Switch (All Engines)
  • Chart C1E - PSPS Check (2.8L & 5.0L)
  • CHART C2C - IDLE AIR CONTROL (All ENGINES)
    • Notes
    • Diagnostic Aids
  • Chart C3 - Canister Purge Check (All Engines)
  • Chart C4A - Ignition System Check (5.0/5.7L)
  • Chart C4B - Ignition System Check (2.8L)
  • Chart C5 - Electronic Spark Control (ESC) (5.0/ 5.7L)
  • Chart C6A - Electric Divert (2.8L W/ Man. Trans.)
  • Chart C6A - Air Management Check (5.7L)
  • Chart C6B - Air Management Check (5.0L)
  • Chart C7A - Exhaust Gas RECIRCULATION (2.8L)
  • Chart C7B - Exhaust Gas RECIRCULATION (5.0/5.7L)
  • Chart C8 - Trans. CONV. Clutch (2.8L, All Trans./Transaxles)
  • Chart C8A - Trans. CONV. Clutch (Cont.)(2.8L,125-C Transaxle)
  • Chart C8B - Transmission Converter Clutch (5.0L)
  • Chart C8A - Transmission Converter Clutch (5.7L)
  • Chart C8B - Manual Trans. W/ Overdrive (5.7L)
  • Chart C10A - A/C Clutch Control (2.8L)
  • Chart C10B - A/C Clutch Control
  • Chart C12A - Coolant Fan Check (All Engines)
• Component Locations
• ECM Terminal Id
• Wiring Diagrams