Engine Controls - Tests W/Codes - 3.3L CNG

• Introduction
• Fuel Pressure Release
  • Notes
  • Fuel System Purging
  • Fuel Tube Purging
  • Fuel Cylinder Purging
• Self-Diagnostic System
  • Notes
  • System Diagnostics
    • Notes
    • Hard Failures
    • Intermittent Failures
  • Service Precautions
  • Visual Inspection
  • Diagnostic Procedure
  • Entering On-Board Diagnostics
    • Notes
    • Malfunction Indicator Light (MIL) Diagnostic Mode
    • Scan Tool Diagnostic Mode
  • Clearing DTCS
• DTC Codes/Messages
  • DTCS/Messages
    • Notes
    • Code 11
    • Code 12
    • Code 15
    • Code 23
    • Code 24
    • Code 33
    • Code 34
    • Code 37
    • Code 41
    • Code 42
    • Code 44
    • Code 45
    • Code 46
    • Code 47
    • Code 53
    • Code 55
    • Code 62
    • Code 63
  • Inactive DTC Condition
• Connector Identification
• Self-Diagnostic Tests
  • Notes
  • Test TC-1A - Checking System For DTCS
  • Test TC-2A - No Crank Reference Signal At Pcm (DTC 11)
  • Test TC-2B - No Crank Reference Signal At Pcm
  • Test TC-3A - No Cam Signal At Pcm (DTC 54)
  • Test TC-4A - No Change In Map From Start To Run (DTC 13)
  • Test TC-5A - Map Sensor Voltage Too Low (DTC 14)
  • Test TC-6A - Map Sensor Voltage Too High (DTC 14)
  • Test TC-7A - No Vehicle Speed Sensor Signal (DTC 15)
  • Test TC-7B - No Vehicle Speed Sensor Signal
  • Test TC-8A - O2S Stays At Center (DTC 21)
  • Test TC-9A - O2S Stays Above Center (Rich) (DTC 52)
  • Test TC-10A - O2S Stays Below Center (Lean) (DTC 51)
  • Test TC-11A - O2S Shorted To Voltage (DTC 21)
  • TEST TC-12A - IDLE ADAP MEM AT LEAN LIMIT OR IDLE ADAP MEM AT RICH LIMIT (DTC 52 or 51)
  • Test TC-13A - Throttle Position Sensor Voltage Low (DTC 24)
  • Test TC-14A - Throttle Position Sensor Voltage High (DTC 24)
  • Test TC-15A - ECT Sensor Voltage Too Low (DTC 22)
  • Test TC-16A - ECT Sensor Voltage Too High (DTC 22)
  • Test TC-17A - Intake Air Temp Sensor Voltage Low (DTC 23)
  • Test TC-18A - Intake Air Temp Sensor Voltage High (DTC 23)
  • Test TC-19A - CNG Temp Sensor Voltage Too Low (DTC 64)
  • Test TC-20A - CNG Temp Sensor Voltage Too High (DTC 64)
  • Test TC-21A - CNG Pressure Sensor Voltage Too Low (DTC 64)
  • Test TC-22A - CNG Pressure Sensor Voltage Too High (DTC 64)
  • Test TC-23A - Idle Air Control Motor Circuits (DTC 25)
  • Test TC-23B - Idle Air Control Motor Circuits
  • Test TC-23C - Idle Air Control Motor Circuits
  • Test TC-23D - Idle Air Control Motor Circuits
  • Test TC-23E - Idle Air Control Motor Circuits
  • Test TC-24A - A/C Clutch Relay Circuit (DTC 33)
  • Test TC-25A - No ASD Relay Output Voltage At Pcm (DTC 42)
  • Test TC-26A - Auto Shutdown Relay Control Circuit (DTC 42)
  • Test TC-27A - Trans Overdrive Solenoid Circuit (DTC 45)
  • Test TC-28A - Torque Converter Clutch Solenoid Circuit (DTC 37)
  • Test TC-29A - EGR Solenoid Circuit (DTC 32)
  • Test TC-30A - EGR System Failure (DTC 32)
  • Test TC-31A - Pcm Failure Sri Mile Not Stored & Pcm Failure EEPROM Write Denied (DTC 62 & 63)
  • Test TC-32A - Low Speed Fan Control Circuit (DTC 35)
  • Test TC-33A - High Speed Fan Control Circuit (DTC 35)
  • Test TC-34A - Ignition Coil Primary Circuit (DTC 43)
  • Test TC-34B - Ignition Coil #1 Primary Circuit
  • Test TC-35A - Ignition Coil #2 Primary Circuit (DTC 43)
  • Test TC-36A - Ignition Coil #3 Primary Circuit (DTC 43)
  • Test TC-37A - Injector Control Circuits (DTC 27)
  • Test TC-37B - Injector #1 Control Circuit
  • Test TC-38A - Injector #2 Control Circuit (DTC 27)
  • Test TC-39A - Injector #3 Control Circuit (DTC 27)
  • Test TC-40A - Injector #4 Control Circuit (DTC 27)
  • Test TC-41A - Injector #5 Control Circuit (DTC 27)
  • Test TC-42A - Injector #6 Control Circuit (DTC 27)
  • Test NTC-1A - No DTC Test Menu
  • Test NTC-2A - Checking Secondary Ignition & Timing
  • Test NTC-3A - Checking Fuel Pressure
  • Test NTC-4A - Checking Fuel Injectors
  • Test NTC-4B - Injector #1 Driver Circuit
  • Test NTC-4C - Injector #2 Driver Circuit
  • Test NTC-4D - Injector #3 Driver Circuit
  • Test NTC-4E - Injector #4 Driver Circuit
  • Test NTC-4F - Injector #5 Driver Circuit
  • Test NTC-4G - Injector #6 Driver Circuit
  • Test NTC-5A - Checking Coolant Sensor Calibration
  • Test NTC-6A - Checking TP Sensor Calibration
  • Test NTC-7A - Checking Map Sensor Calibration
  • Test NTC-8A - Checking Oxygen Sensor Switching
  • Test NTC-8B - Checking Oxygen Sensor Switching
  • Test NTC-9A - Checking Oxygen Sensor Heater
  • Test NTC-10A - Checking Idle Air Control Motor
  • Test NTC-10B - Checking Idle Air Control Motor
  • Test NTC-12A - Checking Park/Neutral Switch
  • Test NTC-13A - Checking Pcm Grounds & Power Circuit
  • Test NTC-15A - Checking Engine Vacuum
  • Test NTC-16A - Performing No DTC Mechanical Test
• No-Start Tests
  • Test NS-1A - Inspecting Fuel System
  • Test NS-1B - Inspecting Fuel System
  • Test NS-2A - Inspecting Fuel Relays & Solenoids
  • Test NS-2B - Inspecting Fuel Relays & Solenoids
  • Test NS-2C - Inspecting Fuel Relays & Solenoids
  • Test NS-2D - Inspecting Fuel Relays & Solenoids
  • Test NS-3A - Correcting Fuel Pressure Loss
  • Test NS-4A - Inspecting Ignition
  • Test NS-5A - Inspecting Mechanical System
  • Test NS-6A - Correcting No Response Condition
  • Test NS-6B - Correcting No Response Condition
  • Test NS-7A - Inspecting Idle Air Control Motor Operation
  • Test NS-7B - Inspecting Idle Air Control Motor Operation
  • Test NS-7C - Inspecting Idle Air Control Motor Operation
  • Test NS-7D - Inspecting Idle Air Control Motor Operation
  • Test NS-7E - Inspecting Idle Air Control Motor Operation
  • Test NS-8A - Correcting Start & Stall Condition
  • Test NS-9A - Repairing No Crank Condition
• Verification Tests
  • Test VER-1 - No Start Verification
  • Test VER-2 - Road Test Verification
• Summary
• Wiring Diagrams