Engine Controls - Tests W/Codes - 4.0L

• Model Identification
• Introduction
  • Notes
  • System Diagnostics
    • Notes
    • On-Board Diagnostics
    • Hard Failures
    • Intermittent Failures
• Self-Diagnostic System
  • Overview
  • Service Precautions
  • Diagnostic Procedure
  • Visual Inspection
  • Retrieving DTCS
    • Notes
    • Using Digital Odometer (If Equipped)
    • Using Malfunction Indicator Light (MIL)
    • Using Scan Tool
  • Clearing DTCS
• Inactive DTC Condition
• Fuel Pressure Release
  • Notes
  • Vehicles With Fuel Rail Test Port
  • Vehicles Without Fuel Rail Test Port
• Summary
• Connector Identification
• Self-Diagnostic Tests
  • Notes
  • DTC Test - Checking System For Diagnostic Trouble Codes
• Diagnostic Trouble Code (DTC) Identification
• Trouble Code Tests
  • Test TC-1A - No Cam Signal At Pcm
  • Test TC-1B - No Cam Signal At Pcm
  • Test TC-1C - No Cam Signal At Pcm
  • Test TC-5A - Charging System Voltage Too Low
  • Test TC-6A - Charging System Voltage Too High
  • Test TC-6B - Charging System Voltage Too High
  • Test TC-10A - Auto Shutdown Relay Control Circuit
  • Test TC-11A - Generator Field Not Switching Properly
  • Test TC-12A - Torque Converter Clutch (TCC) Solenoid/Trans Relay CKT
  • Test TC-12B - Torque Converter Clutch (TCC) Solenoid/Trans Relay CKT
  • Test TC-12C - Torque Converter Clutch (TCC) Solenoid/Trans Relay CKT
  • Test TC-12D - Torque Converter Clutch (TCC) Solenoid/Trans Relay CKT
  • Test TC-12E - Torque Converter Clutch (TCC) Solenoid/Trans Relay CKT
  • Test TC-15A - Speed Control Solenoid Circuits
  • Test TC-15B - Speed Control Solenoid Circuits Or Speed Control Power Relay Circuits
  • Test TC-16A - A/C Clutch Relay Circuit
  • Test TC-18A - EVAP Purge Solenoid Circuit
  • Test TC-19A - Injector #3 Control Circuit
  • Test TC-20A - Injector #2 Control Circuit
  • Test TC-21A - Injector Control Circuits
  • Test TC-21B - Injector #1 Control Circuit
  • Test TC-25A - Idle Air Control Motor Circuits
  • Test TC-25B - Idle Air Control Motor Circuits
  • Test TC-25C - Idle Air Control Motor Circuits
  • Test TC-25D - Idle Air Control Motor Circuits
  • Test TC-25E - Idle Air Control Motor Circuits
  • Test TC-26A - Throttle Position Sensor Voltage Low
  • Test TC-27A - Throttle Position Sensor Voltage High
  • Test TC-30A - ECT Sensor Voltage Too Low
  • Test TC-31A - ECT Sensor Voltage Too High
  • Test TC-35A - No Vehicle Speed Sensor Signal
  • Test TC-35B - No Vehicle Speed Sensor Signal
  • Test TC-35C - No Vehicle Speed Sensor Signal
  • Test TC-36A - Map Sensor Voltage Too Low Or No 5 Volts To Map Sensor
  • Test TC-37A - Map Sensor Voltage Too High
  • Test TC-39A - No Change In Map From Start To Run
  • Test TC-40A - No Crank Reference Signal At Pcm
  • Test TC-43B - Ignition Coil #1 Primary Circuit
  • Test TC-44A - No ASD Relay Output Voltage At Pcm
  • Test TC-48A - Pcm Failure Sri Mile Not Stored
  • Test TC-49A - Pcm Failure EEPROM Write Denied
  • Test TC-50A - Trans 3-4 Solenoid/Trans Relay CKTS
  • Test TC-50B - Trans 3-4 Solenoid/Trans Relay CKTS
  • Test TC-50C - Trans 3-4 Solenoid/Trans Relay CKTS
  • Test TC-50D - Trans 3-4 Solenoid/Trans Relay CKTS
  • Test TC-57A - Intake Air Temperature Sensor Voltage Low
  • Test TC-58A - Intake Air Temperature Sensor Voltage High
  • Test TC-61A - Injector #4 Control Circuit
  • Test TC-62A - 1/1 O2 Sensor Shorted To Voltage
  • Test TC-69A - Injector #5 Control Circuit
  • Test TC-70A - Injector #6 Control Circuit
  • Test TC-74A - Trans Temp Sensor Voltage Too Low
  • Test TC-75A - Trans Temp Sensor Voltage Too High
  • Test TC-75B - Trans Temp Sensor Voltage Too High
  • Test TC-79A - Injector #7 Control Circuit
  • Test TC-80A - Injector #8 Control Circuit
  • Test TC-82A - Speed Control Power Relay Or 12-Volt Driver Circuit
  • Test TC-82B - Speed Control Solenoid Circuits Or Speed Control Power Relay Circuits
  • Test TC-87A - Speed Control Switch Always Low
  • Test TC-101A - Fuel Pump (System) Relay Control Circuit
  • Test TC-102A - 1/1 O2 Sensor Slow Response
  • Test TC-103A - 1/1 O2 Sensor Heater Failure
  • Test TC-104A - 1/2 O2 Sensor Slow Response
  • Test TC-105A - 1/2 O2 Sensor Heater Failure
  • Test TC-106A - Multiple Cylinder Misfire
  • Test TC-107A - Cylinder #1, #2, #3, #4, #5, #6, #7 Or #8 Misfire
  • Test TC-112A - Catalyst 1/1 Efficiency Failure
  • Test TC-113A - EVAP Purge Flow Monitor Failure
  • Test TC-114A- PNP Switch Stuck In Park Or In Gear
  • Test TC-118A - Fuel System 1/1 Rich
  • Test TC-118B - Fuel System 1/1 Rich
  • Test TC-119A - Fuel System 1/1 Lean
  • Test TC-119B - Fuel System 1/1 Lean
  • Test TC-120B - Fuel 2/1 System Rich
  • Test TC-121B - Fuel System 2/1 Lean
  • Test TC-126A - 1/2 O2 Sensor Shorted To Voltage
  • Test TC-128A - Closed Loop Temperature Not Reached
  • Test TC-132A - TPS Voltage Does Not Agree With Map
  • Test TC-138A - Target Idle Not Reached
  • Test TC-138B - Target Idle Not Reached
  • Test TC-140A - EGR System Failure
  • Test TC-141A - Governor Pressure Not Equal To Target @ 15-20 Psi
  • Test TC-141B - Governor Pressure Not Equal To Target @ 15-20 Psi
  • Test TC-141C - Governor Pressure Not Equal To Target @ 15-20 Psi
  • Test TC-141D - Governor Pressure Not Equal To Target @15-20 Psi
  • Test TC-142A - Governor Pressure Above 3 Psi In Gear With 0 Mph
  • Test TC-142B - Governor Pressure Above 3 Psi In Gear With 0 Mph
  • Test TC-148A - TORQ CONV CLU No, Rpm Drop At Lockup
  • Test TC-148B - TORQ CONV CLU No, Rpm Drop At Lockup
  • Test TC-148C - TORQ CONV CLU No, Rpm Drop At Lockup
  • Test TC-149A - Fuel Level Sending Unit Volts Too Low
  • Test TC-150A - Fuel Level Sending Unit Volts Too High
  • Test TC-151A - Fuel Level Unit No Change Over Miles
  • Test TC-153A - Battery Temp Sensor Voltage Too Low/Too High
  • Test TC-153B - Battery Temp Sensor Voltage Too Low/Too High
  • Test TC-155A - 1/1 O2 Sensor Voltage Shorted To Ground
  • Test TC-156A - 1/2 O2 Sensor Voltage Shorted To Ground
  • Test TC-157A - Intermittent Loss Of CMP Or CKP
  • Test TC-157B - Intermittent Loss Of CMP Or CKP
  • Test TC-157C - Intermittent Loss Of CMP Or CKP
  • Test TC-157D- Intermittent Loss Of CMP Or CKP
  • Test TC-161A - EVAP Leak Monitor Large Leak Detected
  • Test TC-164A - Trans Temp Sensor No Rise After Start
  • Test TC-165A - 3-4 Shift Solenoid No Rpm Drop 3-4 Shift
  • Test TC-166A - Low Output Speed Sensor Rpm Above 15 Mph
  • Test TC-167A - Governor Pressure Sensor Volts Too Low
  • Test TC-168A - Governor Pressure Sensor Volts Too High
  • Test TC-168B - Governor Pressure Sensor Volts Too High
  • Test TC-169A - Gov Press Sen Offset Volts Too Low Or Too High
  • Test TC-171A - Governor Pressure Solenoid/Trans Relay CKTS
  • Test TC-171B - Governor Pressure Solenoid/Trans Relay CKTS
  • Test TC-171C - Governor Pressure Solenoid/Trans Relay CKTS
  • Test TC-171D - Governor Pressure Solenoid Circuit
  • Test TC-173A - Trans 12-Volt Supply Relay CNTRL Circuit
  • Test TC-181A - 2/1 O2 Sensor Voltage Shorted To Ground
  • Test TC-184A - Leak Detection Pump SW Or Mechanical Fault
  • Test TC-186A - Misfire Adaptive Numerator At Limit
  • Test TC-188A - O/D Switch Pressed (Lo) More Than 5 Minutes
  • Test TC-192A - 1/1 O2 Sensor Slow During Catalyst Monitor
• No Trouble Code Tests
  • Test NTC-1A - No Trouble Code Test Menu
    • Notes
    • No Trouble Code Complete Test
    • No Trouble Code Quick Individual Test
    • No Trouble Code Quick Symptom Test
  • Test NTC-1B - No Trouble Code Test Menu
    • Notes
    • No Trouble Code Complete Test
    • No Trouble Code Quick Individual Test
  • Test NTC-2A - Checking Secondary Ignition & Timing
  • Test NTC-3A - Checking Fuel Pressure (Gasoline)
  • Test NTC-4A - Checking ECT Sensor Calibration
  • Test NTC-5A - Checking Throttle Position Sensor Calibration
  • Test NTC-6A - Checking Map Sensor Calibration
  • Test NTC-7A - Checking Oxygen Sensor Switching
  • Test NTC-7B - Checking Oxygen Sensor Switching
  • Test NTC-8A - Checking Oxygen Sensor Heater
  • Test NTC-9A - Checking Idle Air Control Motor
  • Test NTC-9B - Checking Idle Air Control Motor
  • Test NTC-10A - Checking Park/Neutral Position Switch
  • Test NTC-11A - Checking Pcm Power & Ground Circuits
  • Test NTC-12A - Checking EVAP System
  • Test NTC-13A - Checking EGR System
  • Test NTC-14A - Checking Engine Vacuum
  • Test NTC-15A - Checking Intake Air Temperature Sensor
  • Test NTC-16A - Checking Minimum Idle Airflow
  • Test NTC-17A - Checking Intake Air Heater #1
  • Test NTC-17B - Checking Intake Air Heater #1
  • Test NTC-18A - Checking Intake Air Heater #2
  • Test NTC-18B - Checking Intake Air Heater #2
  • Test NTC-19A - Checking Fuel Heater
  • Test NTC-20A - Checking Wait-To-Start Lamp
  • Test NTC-21A - Checking Water-In-Fuel Lamp & Sensor
  • Test NTC-21B - Checking Water-In-Fuel - Lamp & Sensor
  • Test NTC-22A - Checking Engine Mechanical Systems (Gasoline Engines)
    • Notes
    • Checking Distributor Position With Scan Tool
  • Test NTC-22B - Checking Engine Mechanical Systems (Diesel Engines)
• No Start Tests
  • Test NS-SEL - No Start Selection Menu
  • Test NS-1A - Qualifying No Start Condition
  • Test NS-2A - Checking Fuel System (Gasoline)
  • Test NS-3A - Checking Engine Mechanical System
  • Test NS-4A - Repairing Low Fuel Pressure
  • Test NS-5A - Checking Fuel Pump
  • Test NS-6A - Repairing No Response Condition
  • Test NS-6B - Repairing No Response Condition
  • Test NS-6C - Repairing No Response Condition
  • Test NS-6D - Repairing No Response Condition
  • Test NS-6E - Repairing No Response Condition
  • Test NS-7A - Checking Idle Air Control Motor
  • Test NS-7B - Idle Air Control Motor Circuits
  • Test NS-7C - Idle Air Control Motor Circuits
  • Test NS-7D - Idle Air Control Motor Circuits
  • Test NS-7E - Idle Air Control Motor Circuits
  • Test NS-8A - Repairing Start & Stall Condition
    • Notes
    • Checking Distributor Position With Scan Tool
  • Test NS-9A - Repairing No Crank Condition
  • Test NS-9B - Repairing No Crank Condition
  • Test NS-9C - Repairing No Crank Condition
  • Test NS-14A - Checking Fuel Heater Relay With
  • Test NS-15A - Checking Fuel Heater Relay Independent Of Engine Temperature
• Verification Tests
  • Test VER-1A - No Start Verification
  • Test VER-2A - Road Test Verification
  • Test VER-3A - Charging Verification
  • Test VER-4A - Speed Control Verification
  • Test VER-5A - Road Test For OBD-II DTCS