Engine Controls - Tests W/Codes

• Introduction
• Self-Diagnostic System
  • Notes
  • Hard Failures
  • Intermittent Failures
  • Retrieving Codes
  • Clearing Codes
• Code Charts
  • Notes
  • ECM Location
  • Trouble Code Definition
  • Diagnostic Circuit Check
  • Test No. 1 - Checking ECM Power Supply
    • Circuit Confirmation
    • Inspection & Correction
  • Test No. 2 - Check Engine Light Inoperative
  • Test No. 3 - Will Not Flash Code 12
  • Code 12 - System Normal
  • Code 13 - Heated Oxygen Sensor Circuit
  • Code 14 - Shorted - Engine Coolant Temperature Sensor
  • Code 15 - Open - Engine Coolant Temperature Sensor
  • Code 21 - Throttle Valve Switch (Idle & Full Throttle)
  • Code 22 - Starter Signal
  • Code 23, 35 & 54 - Power Transistor Circuit
  • Code 25 & 53 - Fuel Pressure Regulator VSV
  • Code 26 & 27 - Canister Purge VSV
  • Code 32 - EGR System Malfunction
  • Code 33 - Fuel Injector - Circuit (Open Or Grounded)
  • Code 34 - Map Sensor
  • Code 41 - Crankshaft Position Sensor Signal
  • Code 43 & 65 - Throttle Valve Switch
  • Code 44 & 45 - Oxygen Sensor-Lean/Rich Fuel Mixture
    • Notes
    • Fuel Metering Rich Faulty Inspection Procedure
    • Fuel Metering Lean Faulty Inspection Procedure
  • Code 51 & 52 - Faulty ECM Ram/ROM
  • Code 61 & 62 - Airflow Sensor Signal
  • Code 63 - Vehicle Speed Sensor Signal
  • Code 64 - Fuel Injector Circuit (ECM Transistor)
• Summary