Engine Controls - Tests W/Codes

• Introduction
  • Overview
    • Notes
    • Start Here
    • Miscellaneous
• Quick Test
  • Overview
  • Step 1.0 Visual Check
  • Step 2.0 Vehicle Prep & Equipment Hookup
    • Notes
    • VOM Setup
    • VOM Use
    • Scan Tool: Setup & Use
    • STAR Tester: Setup
    • STAR Tester: Use
    • "Check Engine" or "Service Engine Soon" Light (MIL) Setup & Use
  • Step 3.0 Perform KOEO Self-Test
    • Introduction
    • Begin
    • Yes, On-Demand Pass Code 11 Received
    • No, On-Demand Pass 11 Not Received
  • Step 3.1 Check For Continuous Codes 45, 46 Or 48
  • Step 4.0 Computed Timing Check
    • Introduction
    • Begin
  • Step 5.0 Perform Engine Running (KOER) Self-Test
    • Introduction
    • Begin
    • Yes, Pass Code 11 Received
    • No, Pass Code 11 Not Received
  • Step 6.0 KOEO Code-To-Test Chart
  • Step 7.0 KOER Code-To-Test Chart
  • Step 8.0 Continuous Code-To-Test Chart
  • Step 9.0 Diagnosis By Symptom
• Code Definition Tables
  • Introduction
    • Notes
    • Link Menu
  • 2.3L VIN [A]
  • 2.9L VIN [T] CALIFORNIA
  • 2.9L VIN [T] Federal
  • 3.0L VIN [U]
  • 4.0L VIN [X]
  • 4.9L VIN [Y]
  • 5.0L VIN [N]
  • 5.8L VIN [H]
  • 7.3L VIN [M]
  • 7.5L VIN [G]
• Clearing Codes Or KAM Memory
  • Clearing Codes
  • Clearing Keep Alive Memory (KAM)
• EEC-IV Functional Tests
  • Introduction
  • Continuous Monitor Mode (Wiggle Test)
    • Description
    • Key On Engine Off (KOEO) Wiggle Test Procedure
    • Engine Running (KOER) Wiggle Test Procedure
  • Output State Check
  • Cylinder Balance Test - SEFI Engines
    • Introduction
    • Details Of Operation
• EEC-IV Backup Strategies & Effect On Mil Light
  • Introduction
  • Failure Mode Effects Management (FMEM), Code 98
  • Hardware Limited Operational Strategy (HLOS)
  • Mil Light ("Check Engine"/"Service Engine Soon") Operation
    • Introduction
    • How The Light Operates When The System Is Okay
    • How The Light Operates When The System Is NOT Okay
• Sensor/Actuator Resistance & Voltage Specifications
• Acronym/Definition Glossary
  • Starting With Number
  • Starting With Letter "A"
  • Starting With Letter "B"
  • Starting With Letter "C"
  • Starting With Letter "D"
  • Starting With Letter "E"
  • Starting With Letter "F"
  • Starting With Letter "G"
  • Starting With Letter "H"
  • Starting With Letter "I"
  • Starting With Letter "K"
  • Starting With Letter "L"
  • Starting With Letter "M"
  • Starting With Letter "N"
  • Starting With Letter "O"
  • Starting With Letter "P"
  • Starting With Letter "Q"
  • Starting With Letter "R"
  • Starting With Letter "S"
  • Starting With Letter "T"
  • Starting With Letter "V"
  • Starting With Letter "W"
• General Pinpoint Test Notes
• Test A - No Start (Non-EDIS Ignition)
  • Test A - Introduction
  • Test A: Step 1
  • Test A: Step 2
  • Test A: Step 3
  • Test A: Step 4
  • Test A: Step 5
  • Test A: Step 6
  • Test A: Step 7
  • Test A: Step 8
  • Test A: Step 9
  • Test A: Step 10
  • Test A: Step 11
  • Test A: Step 12
  • Test A: Step 20
  • Test A: Step 21
• Test Aa - No Start (EDIS Ignition Only)
  • Test Aa - Introduction
  • Test Aa: Step 1
  • Test Aa: Step 2
  • Test Aa: Step 3
  • Test Aa: Step 4
  • Test Aa: Step 5
  • Test Aa: Step 6
  • Test Aa: Step 7
  • Test Aa: Step 8
  • Test Aa: Step 9
  • Test Aa: Step 10
• Test B - Vehicle Battery
  • Test B: - Introduction
  • Test B: Step 1
  • Test B: Step 2
  • Test B: Step 3
  • Test B: Step 4
  • Test B: Step 5
  • Test B: Step 6
  • Test B: Step 7
  • Test B: Step 8
• Test C - Reference Voltage
  • Test C - Introduction
  • Test C: Step 1
  • Test C: Step 2
  • Test C: Step 3
  • Test C: Step 4
  • Test C: Step 5
  • Test C: Step 6
  • Test C: Step 7
  • Test C: Step 9
  • Test C: Step 10
• Test DA - Temperature Sensor Test (Act, ECT & Vat)
  • Test DA - Introduction
  • Test DA: Step 1
  • Test DA: Step 2
  • Test DA: Step 3
  • Test DA: Step 4
  • Test DA: Step 10
  • Test DA: Step 11
  • Test DA: Step 20)
  • Test DA: Step 21
  • Test DA: Step 22
  • Test DA: Step 90
  • Test DA: Step 91
  • Test DA: Step 92
• Test Dc - Mass Airflow (MAF) Sensor
  • Test Dc - Introduction
  • Test Dc: Step 1
  • Test Dc: Step 2
  • Test Dc: Step 10
    • Notes
    • 2.3L, 2.9L & 4.0L Ma PFI Engines
    • All Other Engines
  • Test Dc: Step 11
    • Notes
    • 2.3L, 2.9L & 4.0L Ma PFI Engines
    • All Other Engines
  • Test Dc: Step 12
  • Test Dc: Step 13
    • Notes
    • 2.3L, 2.9L & 4.0L Ma PFI Engines
    • All Other Engines
  • Test Dc: Step 14
    • Notes
    • 2.3L, 2.9L & 4.0L Ma PFI Engines
    • All Other Engines
  • Test Dc: Step 15
    • Notes
    • 2.3L, 2.9L & 4.0L Ma PFI Engines
    • All Other Engines
  • Test Dc: Step 20
  • Test Dc: Step 21
• Test DF - Map/BP Sensors
  • Test DF - Introduction
    • Manifold Absolute Pressure (Map)/Barometric Pressure (BP) Sensors
  • Test DF: Step 1
  • Test DF: Step 2
  • Test DF: Step 3
  • Test DF: Step 4
  • Test DF: Step 5
  • Test DF: Step 7
  • Test DF: Step 8
  • Test DF: Step 9
  • Test DF: Step 10
  • Test DF: Step 11
  • Test DF: Step 12
  • Test DF: Step 13
  • Test DF: Step 90
  • Test DF: Step 91
  • Test DF: Step 92
• Test Dg - Knock Sensor (KS)
  • Test Dg - Introduction
  • Test Dg: Step 1
  • Test Dg: Step 2
  • Test Dg: Step 3
  • Test Dg: Step 4
  • Test Dg: Step 5
  • Test Dg: Step 6
• Test DH - Throttle Position (TP) Sensor
  • Test DH - Introduction
  • Test DH: Step 1
  • Test DH: Step 2
  • Test DH: Step 3
  • Test DH: Step 4
  • Test DH: Step 6
  • Test DH: Step 10
  • Test DH: Step 11
  • Test DH: Step 12
  • Test DH: Step 14
  • Test DH: Step 20
  • Test DH: Step 21
  • Test DH: Step 90
  • Test DH: Step 91
  • Test DH: Step 92
  • Test DH: Step 93
  • Test DH: Step 94
  • Test DH: Step 95
  • Test DH: Step 96
• Test DJ - Engine Rpm Sensor (7.3L Diesel)
  • Test DJ - Introduction
  • Test DJ: Step 1
  • Test DJ: Step 2
  • Test DJ: Step 3
  • Test DJ: Step 4
  • Test DJ: Step 5
• Test DN EVP Sensor & EVR Solenoid
  • Test DN - Introduction
    • EGR Valve Position (EVP) Sensor EGR Valve Regulator (EVR) Solenoid
  • Test DN: Step 1
  • Test DN: Step 2
  • Test DN: Step 3
  • Test DN: Step 4
  • Test DN: Step 5
  • Test DN: Step 6
  • Test DN: Step 7
  • Test DN: Step 10
  • Test DN: Step 11
  • Test DN: Step 12
  • Test DN: Step 13
  • Test DN: Step 20
  • Test DN: Step 21
  • Test DN: Step 22
  • Test DN: Step 25
  • Test DN: Step 26
  • Test DN: Step 40
  • Test DN: Step 42
  • Test DN: Step 43
  • Test DN: Step 44
  • Test DN: Step 45)
  • Test DN: Step 50
  • Test DN: Step 51
  • Test DN: Step 90
  • Test DN: Step 91
  • Test DN: Step 92
  • Test DN: Step 93
  • Test DN: Step 94
  • Test DN: Step 95
  • Test DN: Step 96
  • Test DN: Step 98
  • Test DN: Step 99
• Test DP - Vehicle Speed Sensor (VSS)
  • Test DP - Introduction
    • Notes
    • Preliminary Instructions (A/T Equipped Vehicles)
    • Preliminary Instructions (M/T Equipped Vehicles)
  • Test DP: Step 1
  • Test DP: Step 2
  • Test DP: Step 3
  • Test DP: Step 4
  • Test DP: Step 5
  • Test DP: Step 10
  • Test DP: Step 11
  • Test DP: Step 12
• Test DQ - FIPL Sensor (7.3L Diesel)
  • Test DQ - Introduction
    • Fuel Injection Pump Lever (FIPL) Sensor 7.3L Diesel
  • Test DQ: Step 1
  • Test DQ: Step 2
  • Test DQ: Step 3
  • Test DQ: Step 4
  • Test DQ: Step 10
  • Test DQ: Step 11
  • Test DQ: Step 12
  • Test DQ: Step 13
  • Test DQ: Step 14
  • Test DQ: Step 90
  • Test DQ: Step 91
  • Test DQ: Step 92
  • Test DQ: Step 93
  • Test DQ: Step 94
  • Test DQ: Step 95
  • Test DQ: Step 96
• Test Fa - Neutral Drive Switch (NDS) A/C Input
  • Test Fa - Introduction
  • Test Fa: Step 1
  • Test Fa: Step 2
  • Test Fa: Step 3
  • Test Fa: Step 4
  • Test Fa: Step 5
  • Test Fa: Step 6
  • Test Fa: Step 7
  • Test Fa: Step 8
  • Test Fa: Step 9
  • Test Fa: Step 10
  • Test Fa: Step 11
  • Test Fa: Step 13
  • Test Fa: Step 14
  • Test Fa: Step 15
  • Test Fa: Step 16
  • Test Fa: Step 17
    • Notes
    • 4.9L Engines Only
    • All Other Engines
  • Test Fa: Step 18
  • Test Fa: Step 20
• Test FD - Brake On/Off (Boo) Switch
  • Test FD - Introduction
  • Test FD: Step 1
  • Test FD: Step 2
  • Test FD: Step 3
  • Test FD: Step 5
  • Test FD: Step 6
  • Test FD: Step 7
  • Test FD: Step 10
  • Test FD: Step 11
  • Test FD: Step 12
  • Test FD: Step 13
  • Test FD: Step 14
  • Test FD: Step 15
• Test Ff - Power Steering Pressure Switch (PSPS)
  • Test Ff - Introduction
  • Test Ff: Step 1
  • Test Ff: Step 2
  • Test Ff: Step 3
  • Test Ff: Step 4
  • Test Ff: Step 5
  • Test Ff: Step 6
  • Test Ff: Step 7
  • Test Ff: Step 8
  • Test Ff: Step 9
  • Test Ff: Step 10
  • Test Ff: Step 11
• Test H - Fuel Control
  • Test H - Introduction
  • Test H: Step 1
  • Test H: Step 2
  • Test H: Step 3
  • Test H: Step 4
    • Notes
    • PFI Engines
    • Sequential PFI Engines
  • Test H: Step 5
  • Test H: Step 6
    • Notes
    • PFI Engines
    • Sequential PFI Engines
  • Test H: Step 7
    • Notes
    • PFI Engines
  • Test H: Step 8
  • Test H: Step 9
  • Test H: Step 11
  • Test H: Step 12
  • Test H: Step 14
    • Notes
    • 4-Wire HEGO Sensors
    • All Other HEGO Sensors
  • Test H: Step 15
    • Notes
    • Trucks With 4-Wire HEGO
    • All Others
    • All Vehicles With Dual HEGO Sensors
  • Test H: Step 16
  • Test H: Step 17
  • Test H: Step 18
  • Test H: Step 20
  • Test H: Step 21
  • Test H: Step 22
  • Test H: Step 23
  • Test H: Step 24
  • Test H: Step 25
  • Test H: Step 26
  • Test H: Step 27
  • Test H: Step 28
    • Notes
    • All Ma PFI Engines
    • All Other Engines
  • Test H: Step 29
    • Notes
    • Circuits
    • Unmetered Air/Vacuum Leaks
    • HEGO Fuel Fouled
    • Ignition System
    • Improper Fuel Used
    • Fuel Pressure
    • TP Sensor
  • Test H: Step 30
  • Code 41
  • Code 42
  • Code 43
  • Code 65
  • Code 85
  • Code 86
    • Notes
    • Code 41
    • Code 42
    • Codes 41 and 42:
    • Code 43
    • Code 65
    • Code 85
    • Code 86
• Test J - Fuel Pump Circuit
  • Test J - Introduction
  • Test J: Step 1
  • Test J: Step 2
  • Test J: Step 5
  • Test J: Step 6
  • Test J: Step 7
  • Test J: Step 8
  • Test J: Step 9
  • Test J: Step 10
  • Test J: Step 11
  • Test J: Step 20
    • Notes
    • No Starts
    • Vehicle Starts
  • Test J: Step 21
  • Test J: Step 22
  • Test J: Step 23
  • Test J: Step 24
  • Test J: Step 25
  • Test J: Step 26
  • Test J: Step 30
  • Test J: Step 31
  • Test J: Step 32
  • Test J: Step 90
  • Test J: Step 91
  • Test J: Step 92
  • Test J: Step 93
  • Test J: Step 94
  • Test J: Step 95
• Test Kc - Air Management System (Am1/Am2)
  • Test Kc - Introduction
  • Test Kc: Step 1
  • Test Kc: Step 2
  • Test Kc: Step 3
  • Test Kc: Step 4
  • Test Kc: Step 5
  • Test Kc: Step 6
  • Test Kc: Step 7
  • Test Kc: Step 8
  • Test Kc: Step 9
  • Test Kc: Step 10
  • Test Kc: Step 11
  • Test Kc: Step 12
• Test KD - Canister Purge (CANP)
  • Test KD - Introduction
  • Test KD: Step 1
  • Test KD: Step 2
  • Test KD: Step 3
  • Test KD: Step 4
  • Test KD: Step 5
  • Test KD: Step 6
  • Test KD: Step 7
  • Test KD: Step 8
  • Test KD: Step 9
  • Test KD: Step 10
  • Test KD: Step 15
• Test KE - Idle Speed Control (Bypass Air)
  • Test KE - Introduction
  • Test KE: Step 1
  • Test KE: Step 2
  • Test KE: Step 3
  • Test KE: Step 4
  • Test KE: Step 5
  • Test KE: Step 6
  • Test KE: Step 7
  • Test KE: Step 8
  • Test KE: Step 9
  • Test KE: Step 10
  • Test KE: Step 11
  • Test Step 12
  • Test KE: Step 15
  • Test KE: Step 16
  • Test KE: Step 17
  • Test KE: Step 18
  • Test KE: Step 19
  • Test KE: Step 20
  • Test KE: Step 21
  • Test KE: Step 22
  • Test KE: Step 25
  • Test KE: Step 26
• Test Km - WAC & A/C Demand Switch
  • Test Km - Introduction
    • Wide Open Throttle A/C Cut-Out (WAC) & A/C Demand Switch
  • Test Km: Step 1
  • Test Km: Step 2
    • Notes
    • WAC Relay
  • Test Km: Step 3
  • Test Km: Step 4
  • Test Km: Step 5
  • Test Km: Step 6
  • Test Km: Step 7
  • Test Km: Step 8
  • Test Km: Step 9
  • Test Km: Step 15
  • Test Km: Step 16
    • Notes
    • WAC Relay
  • Test Km: Step 17
  • Test Km: Step 18
  • Test Km: Step 19
  • Test Km: Step 20
  • Test Km: Step 22
  • Test Km: Step 23
  • Test Km: Step 24
  • Test Km: Step 30
  • Test Km: Step 31
  • Test Km: Step 35
• Test KP - Octane Adjust
  • Test KP - Introduction
• Test M - Dynamic Response Test
  • Test M - Introduction
    • Notes
    • Code 77 Displayed: System Failed to Recognize WOT Test
• Test Ml - Check Engine/Malfunction Light
  • Test Ml - Introduction
    • "Check Engine", "Check DCL", Or "Service Engine Soon" Light/Message
  • Test Ml: Step 1
  • Test Ml: Step 5
  • Test Ml: Step 6
  • Test Ml: Step 7
  • Test Ml: Step 8
  • Test Ml: Step 10
  • Test Ml: Step 15
  • Test Ml: Step 20
  • Test Ml: Step 25
• Test N - Ignition/Erratic Diagnostic Monitor (IDM)
  • Test N - Introduction
  • DISTRIBUTORLESS Ignition System (Dis) - 2.3L
  • Electronic DISTRIBUTORLESS Ignition System (EDIS)
  • Closed Bowl Distributor (CBD) - 7.5L
  • TFI Module Distributor
• Engine Controls - Tests W/Codes
  • Test N: Step 1
  • Test N: Step 2
  • Test N: Step 3
  • Test N: Step 4
  • Test N: Step 5
  • Test N: Step 6
  • Test N: Step 7
  • Test N: Step 8
  • Test N: Step 9
  • Test N: Step 10)
  • Test N: Step 11
  • Test N: Step 12
  • Test N: Step 13
  • Test N: Step 14
  • Test N: Step 15
  • Test N: Step 16
  • Test N: Step 20
• Test P - Spark Timing Check
  • Test P - Introduction
  • Test P: Step 1
  • Test P: Step 2
  • Test P: Step 3
  • Test P: Step 4
  • Test P: Step 5
  • Test P: Step 6
  • Test P: Step 7
• Test QA - No Codes/Codes Not Listed
  • Test QA - Introduction
  • Test QA: Step 1
  • Test QA: Step 2
  • Test QA: Step 3
  • Test QA: Step 4
  • Test QA: Step 5
  • Test QA: Step 6
  • Test QA: Step 7
  • Test QA: Step 8
• Test QB - KOEO Or Continuous Memory Service Code 15
  • Test QB - Introduction
  • Test QB: Step 1
  • Test QB: Step 2
  • Test QB: Step 3
• Test QC - Output State Check Not Functioning
  • Test QC: Introduction
  • Test QC: Step 1
  • Test QC: Step 2
• Test QD - Re-Initialization Check
  • Test QD - Introduction
  • Test QD: Step 1
  • Test QD: Step 2
  • Test QD: Step 3
  • Test QD: Step 4
  • Test QD: Step 5
• Test S - System Check
  • Test S - Introduction
  • Test S: Step 1
  • Test S: Step 2
  • Test S: Step 3
  • Test S: Step 4
  • Test S: Step 5
  • Test S: Step 6
  • Test S: Step 7
  • Test S: Step 8
  • Test S: Step 9
• Test Tb - A4LD Transmission
  • Test Tb - Introduction
  • Test Tb: Step 1
  • Test Tb: Step 2
  • Test Tb: Step 3
  • Test Tb: Step 4
  • Test Tb: Step 5
• Test TC - E4OD Transmission
  • Test TC - Introduction
  • Test TC: Step 1
  • Test TC: Step 2
  • Test TC: Step 3
  • Test TC: Step 4
  • Test TC: Step 10
  • Test TC: Step 11
    • Notes
    • 4WD Low Circuit
    • Overdrive Cancel Switch (OCS) Circuit
  • Test TC: Step 12
    • Notes
    • 4WD Low Circuit
    • Overdrive Cancel Switch (OCS) Circuit
  • Test TC: Step 13
  • Test TC: Step 14
    • Notes
    • 4WD Low Circuit
    • OCS-OCIL Circuit
  • Test TC: Step 15
    • Notes
    • 4WD Low Circuit
    • OCS-OCIL Circuit
  • Test TC: Step 16
    • Notes
    • 4WD Low Circuit
    • OCS-OCIL Circuit
  • Test TC: Step 17
  • Test TC: Step 18
  • Test TC: Step 19
  • Test TC: Step 20
  • Test TC: Step 21
  • Test TC: Step 22
  • Test TC: Step 23
  • Test TC: Step 24
  • Test TC: Step 25
  • Test TC: Step 30
  • Test TC: Step 31
  • Test TC: Step 32
  • Test TC: Step 33
  • Test TC: Step 40
  • Test TC: Step 41
  • Test TC: Step 50
  • Test TC: Step 51
  • Test TC: Step 52
  • Test TC: Step 90
  • Test TC: Step 91
  • Test TC: Step 92
    • Notes
    • MLP Sensor (Code 67)
    • Transmission Solenoids (Codes 62 Or 99) & Tot Sensor (Codes
  • Test TC: Step 93
  • Test TC: Step 94
  • Test TC: Step 95
  • Test TC: Step 96
  • Test TC: Step 97
• Test X - Integral Relay Control Module (IRCM)