2.0L & 2.3L MCU Testing

• Diagnosis & Testing
  • Preparation For Testing
  • 4-Cylinder Functional Test
    • Notes
    • Key On, Engine Off Test
    • Engine Running Test
    • Canister Purge Quick Check
  • Instructions For Using The Sub-Routine Tests
  • Test 1 - No Start
  • Test 2 - Diagnostic Code 33 - Running Test Not Initiated
  • Test 3 - Diagnostic Code 41 - Fuel Always Lean
  • Test 4 - Diagnostic Code 42 - Fuel Always Rich
  • Test 5 - Diagnostic Code 44 - THERMACTOR System
  • Test 6 - Diagnostic Code 45 - THERMACTOR Air Diverter
  • Test 7 - Diagnostic Code 46 - THERMACTOR Air By-Pass
  • Test 8 - Diagnostic Code 51 - Low Temperature Switch
  • Test 9 - Diagnostic Codes 52, 53, 55, 62, 63 & 65 - Wot
  • Test 10 - No Diagnostic Code - Functional Test Not Operating
  • Test 11 - Tachometer Lead Test
  • Test 12 - Canister Purge Solenoid
• Wiring Diagrams