Symptom Troubleshooting [Non-Hybrid Engine)

• Foreword
• Engine OBD II Monitors
  • OBD II Overview
  • OBD II Systems
  • Catalyst Efficiency Monitor
  • General Catalyst Monitor Operation
  • Cold Start Emission Reduction Monitor
    • Overview
    • Cold Start Emission Reduction Component Monitor
    • Low Idle Air Flow Test
    • Low Idle Air Flow Test Operation
    • Low Idle Air Flow Test Entry Conditions
    • Spark Timing Monitor Test
    • Spark Timing Monitor Test Operation
    • Spark Timing Monitor Test Entry Conditions
    • Cold Start Emission Reduction System Monitor
    • Cold Start Emission Reduction System Monitor Test Operation
    • Cold Start Emission Reduction System Monitor Entry Conditions
  • Comprehensive Component Monitor (CCM)
  • Electric Exhaust Gas Recirculation (EEGR) System Monitor
  • Enhanced Thermostat Monitor
  • Evaporative Emission (EVAP) Leak Check Monitor
  • Engine On EVAP Leak Check Monitor
  • Engine Off Natural Vacuum (EONV) EVAP Leak Check Monitor
  • Fuel System Monitor
  • Heated Oxygen Sensor (HO2S) Monitor
  • Misfire Detection Monitor
    • Notes
    • Misfire Monitor Operation
    • Low Data Rate System (LDR)
    • High Data Rate System (HDR)
    • Generic Misfire Processing
    • Rough Road Detection
    • Profile Correction
    • Neutral Profile Correction and Non-Volatile Memory
    • Misfire Monitor Specifications
  • Positive Crankcase Ventilation (PCV) System Monitor
  • Thermostat Monitor
  • Variable Camshaft Timing (VCT) Monitor
  • Malfunction Indicator Lamp (MIL)
  • Powertrain Control Software
    • Notes
    • Failure-Type Byte
    • Status Byte
    • DTC status Bit Definitions
• Electronic Engine Control (EEC) System
  • Overview
    • Notes
    • Modifications to OBD II Vehicles
  • Powertrain Control Hardware
    • Pcm
    • PCM Location
    • Fuel Pump Control Module
    • Fuel Pump Driver Module (FPDM)
    • Keep Alive Memory (KAM)
    • Hardware Limited Operation Strategy (HLOS)
  • Power and Ground Signals
    • Electronic Throttle Control Reference Voltage (ETCREF)
    • Electronic Throttle Control Return (ETCRTN)
    • Gold Plated Pins
    • Keep Alive Power (KAPWR)
    • Mass Air Flow Return (MAF RTN)
    • Power Ground (PWR GND)
    • Signal Return (SIG RTN)
    • Vehicle Buffered Power (VBPWR)
    • Vehicle Power (VPWR)
    • Vehicle Reference Voltage (VREF)
  • Powertrain Control Software
    • Communications
    • Deceleration Fuel Shut-Off (DFSO)
    • Engine RPM/Vehicle Speed Limiter
    • Fail-Safe Cooling Strategy
    • Failure Mode Effects Management
    • Flash Electrically Erasable Programmable Read Only Memory (EEPROM)
  • Fuel Trim
    • Short Term Fuel Trim
    • Long Term Fuel Trim
    • High Speed Controller Area Network (CAN)
    • Idle Air Trim
    • Idle Air Trim Learning Modes
    • ISO 14229 DTC
    • DTC Structure
    • Failure-Type Byte
    • Status Byte
    • DTC Status Bit Definitions
    • Multiplexing
    • Multiplexing Implementation
    • Permanent DTC
  • Catalyst and Exhaust Systems
    • Overview
    • Catalytic Converter
    • Light Off Catalyst
    • Three-Way Catalyst (TWC) Conversion Efficiency
    • Exhaust System
    • Underbody Catalyst
    • Three-Way Catalytic (TWC) Converter
    • Exhaust Manifold Runners
    • Exhaust Pipes
    • Heated Oxygen Sensor (HO2S)
    • Muffler
  • Evaporative Emission (EVAP) Systems
    • Overview
    • Enhanced Evaporative Emission (EVAP) System
  • Exhaust Gas Recirculation (EGR) Systems
    • Overview
  • Electric Exhaust Gas Recirculation (EEGR) System
    • The Lights Of The EEGR System
  • Electric Exhaust Gas Recirculation (EEGR) System Overview
  • Fuel Systems
    • Overview
    • Mechanical Returnless Fuel System (MRFS) - Dual Speed
    • Fuel Pump Control - Dual Speed MRFS
    • Fuel Pump Duty Cycle Output From PCM
    • Fuel Pump Monitor (FPM) - Dual Speed MRFS
    • Fuel Pump Driver Module Duty Cycle Signals
    • Fuel Filters
    • Pressure Test Point
  • Ignition Systems
    • Overview
    • Integrated Electronic Ignition System
    • Engine Crank/Engine Running
    • Camshaft Position (CMP) Failure Mode Effects Management (FMEM)
  • Intake Air Systems
    • Overview
  • Positive Crankcase Ventilation (PCV) System
    • Overview
  • PCM Controlled Charging System
    • Overview
  • Torque-Based Electronic Throttle Control (ETC)
    • Overview
    • Electronic Throttle Body (ETB)
    • Accelerator Pedal Position (APP) Sensor
    • Electronic Throttle Control (ETC) System Strategy
    • ETC System With A 3-Track APP Sensor Failure Mode And Effects Management
    • ETC System With A 2-Track APP Sensor Failure Mode And Effects Management
    • Electronic Throttle Monitor Operation
    • APP and TP Sensor Inputs
      • Accelerator Pedal Position (APP) Sensor Check
      • Throttle Position (TP) Sensor Check
      • Electronic Throttle Actuator Control (TAC) Output
  • Variable Camshaft Timing (VCT) System
    • Overview
    • VCT System
  • Communication Error
  • Diagnostic Tools
    • Notes
    • Scan Tool Setup and Functionality
  • Diagnostic Methods
    • Overview
  • Vehicle Check/Preparation
    • Visual Checks
    • Vehicle Preparation
  • Quick Test Description
    • Quick Test
    • Key On Engine Off (KOEO) On-Demand Self-Test
    • Key On Engine Running (KOER) On-Demand Self-Test
    • Brake Pedal Position (BPP) Test
    • Power Steering Pressure (PSP) Test
    • Continuous Memory Self-Test
  • Clear the Continuous DTCs and Reset the Emission Monitors Information in the PCM
    • Description
  • Resetting The Keep Alive Memory (KAM)
    • Description
  • On-Board System Readiness (OSR)
    • Description
  • Output State Control (OSC)
    • Description
    • One Touch Integrated Start System
  • Output Test Mode (OTM)
    • Description
  • Parameter Identification (PID)
    • Description
    • Generic OBD PID List
    • Mazda PID List
  • Freeze Frame Data
    • Description
    • Misfire Freeze-Frame PIDs
  • Flash Electrically Erasable Programmable Read Only Memory (EEPROM)
    • Description
    • Neutral Profile Correction
    • Programming the VID Block for a Replacement PCM
    • Making Changes to the VID Block
    • Making Changes to the PCM Calibration
    • Diagnostic Monitoring Test Results - Mode 6
  • Intermittent Diagnostic Techniques
    • Notes
    • Re-creating the Fault
    • Accumulating PCM Data
    • Comparing PCM Data
    • Analyzing PCM Data
  • Adaptive Fuel DTC Diagnostic Techniques
    • Notes
    • DTCs P0171/P0174 System Too Lean Diagnostic Aids
    • DTCs P0172/P0175 System Too Rich Diagnostic Aids
• Quick Test
  • Quick Test Description
    • Notes
    • Key On Engine Off (KOEO) On-Demand Self-Test
    • Key On Engine Running (KOER) On-Demand Self-Test
    • Brake Pedal Position (BPP) Test
    • Power Steering Pressure (PSP) Test
    • Transmission Control Switch (TCS) Test
    • Continuous Memory Self-Test
    • System Pass
    • Parameter Identification (PID) Access
  • On-Board Diagnostic Test
    • DTCs Reading Procedure
  • Pending Trouble Code Access Procedure
  • Freeze Frame PID Data Access Procedure
  • On-Board System Readiness Tests Access Procedure
  • PID/DATA Monitor and Record Procedure
  • Diagnostic Monitoring Test Results Access Procedure
  • After Repair Procedure
• On Board Diagnostic (OBD) Drive Cycle
  • Description
  • Drive Cycle Recommendations
  • Vehicle Preparation
  • OBD II Drive Cycle
  • Monitor Repair Verification Drive Cycles
    • Comprehensive Component Monitor Repair Verification Drive Cycle
  • EGR Monitor Repair Verification Drive Cycle
  • HO2S Monitor Repair Verification Drive Cycle
  • Fuel or Misfire Monitor Repair Verification Drive Cycle
  • EVAP Running Loss System Repair Verification Drive Cycle
  • Catalyst Monitor Repair Verification Drive Cycle
• DTC Chart - B, C And U Codes
• DTC Index - Pcm
• DTC Application Chart
• Pcm Quick Test
• Pcm Relay
• Mass Air Flow (MAF) Sensor
• Intake Air Temperature (IAT) Sensor And Cylinder Head Temperature (CHT) Sensor
• Throttle Body Assembly Electronic Throttle Control (Etc)
• Manifold Absolute Pressure (Map) Sensor
• Heated Oxygen Sensor (Ho2S)
• Heated Oxygen Sensor (Ho2S) Over Voltage
• Upstream Heated Oxygen Sensor (Ho2S)
• Heated Oxygen Sensor (Ho2S) Heater Circuit
• Downstream Heated Oxygen Sensor (Ho2S)
• Adaptive Fuel Control
• Fuel Injector Malfunction
• Fuel Pump (FP) Primary Or Secondary Circuit
• Misfire Detection Monitor
• Crankshaft Position (CKP) Sensor Malfunction
• Knock Sensor Malfunction
• Camshaft Position (CMP) Sensor Malfunction
• Ignition Coil Primary Circuit Malfunction
• Integrated Ignition Coil On Plug Coil A Through F Failure
• EGR System Malfunction
• Catalyst Efficiency Monitor Malfunction
• Evaporative Emission (EVAP) Monitor And System Malfunction
• Evaporative Emission (EVAP) Canister Purge Solenoid Malfunction
• DTC P0451: EVAP System Malfunction
• DTC P0452: Fuel Tank Pressure (Ftp) Sensor Malfunction
• DTC P0453: Fuel Tank Pressure (Ftp) Sensor Malfunction
• DTC P0457: Evaporative Emission (EVAP) System Malfunction
• DTCs P0455 AND P1443: EVAPORATIVE EMISSION (EVAP) SYSTEM MALFUNCTION
• Variable Camshaft Timing (VCT) Malfunction
• Pcm Power Relay
• Brake Pedal Position (BPP) Switch Malfunction
• Clutch Pedal Position (CPP) Switch Malfunction
• OBD II Drive Cycle Malfunction
• Data Link Connector (DLC) Malfunction
• Ho2S Heater(S)
• Heated Oxygen Sensor (Ho2S) Signals
• Fuel System Not Switching At Fuel Trim (Rich Or Lean)
• DTC P1260: Passive Anti-Theft System
• Engine Rpm/Vehicle Speed Limiter Reached
• Evaporative Emission (EVAP) Monitor And System
• Canister Vent (CV) Solenoid Malfunction
• Air Conditioning Clutch (A/Cc) Relay Circuit
  • Notes
  • PCM Connector
• A/C Control Signal (ACCS) Malfunction
• Air Conditioning Pressure (ACP) Transducer Sensor
• Cooling Fan Malfunction
• Diagnostic Index
• Starting Concerns
• Hard Start/Long Crank/Erratic Start/Erratic Crank
• Cranks Normal But Will Not Start
• Unique Idle Concern
• Fast Idle
• Low Idle/Stalls During Deceleration
• Engine Poor DRIVEABILITY
• Backfires
• Lack/Loss Of Power
• Knocking/Pinging
• Poor Fuel Economy
• Emission Compliance
• Mil/TCIL Never On And Mil/TCIL Always On
• Exhaust System Concerns
• Fuel Odor In Engine Compartment
• Engine Noise
• Exhaust Sulfur Smell
• All Supported On Board System Readiness Tests Not Completed
• Fuel Pump Always On
• Engine
  • Inspection/Verification
  • Component Tests
    • Engine Oil Leaks
    • Fluorescent Oil Additive Method
  • Compression Test
    • General Remarks
    • Check The Compression Pressure
    • Interpretation of the Results
    • Excessive Engine Oil Consumption
    • Oil Consumption Test
    • Intake Manifold Vacuum Test
    • Interpreting Vacuum Gauge Readings
• Evaporative Emission System
  • Enhanced Evaporative Emission System
  • Principles of Operation
    • Capless Fuel Filler Pipe
    • Fuel Vapor Recirculation Tube
    • Fuel Vapor Control Valve
    • Fuel Tank Pressure (FTP) Sensor
    • Evaporative Canister Purge (EVAPCP) Valve
    • Canister Vent Solenoid
    • Evaporative Emission (EVAP) Check Valve
    • Dust Separator
    • Evaporative Emission (EVAP) Canister
    • Fuel Vapor Vent Valve (FVV) Assembly
    • Fuel Filler Pipe Check Valve
    • Evaporative Emission System Monitor
    • EVAP Running Loss System Leak Test
  • Inspection/Verification
• Evaporative Emission System Leak Test
  • Phase 1 - Leak Verification
  • Phase 2 - System Leak Check
• Evaporative Emission Repair Verification Drive Cycle
  • Drive Cycle Recommendations
  • Drive Cycle Preparation
    • Notes
    • Preparation for Monitor Entry
    • EVAP Monitor Bypass
• Canister Vent Solenoid Closing Procedure
• Accelerator Pedal Position (App) Sensor
• Charging System
  • Notes
  • Generator
  • Principles of Operation
  • Inspection and Verification
  • PCM DTC Chart
• Battery And Cables
  • Notes
  • Principles Of Operation
    • Battery Eye Operation
    • Charging a Battery
    • Inspection and Verification
• Symptom Troubleshooting Chart - Engine
• Symptom Troubleshooting Chart - Drive Belts
• Engine Cooling - Principles Of Operation
• Engine Cooling - Inspection/Verification
• Engine Cooling - Pcm DTC Chart
• Symptom Troubleshooting Chart - Engine Cooling System
• Connector End Views - Engine Cooling
• Pinpoint Test 1: Loss Of Coolant
  • Normal Operation
  • Possible Causes
  • Diagnostic Procedure
• Pinpoint Test 2: The Engine Overheats
  • Normal Operation
  • Possible Causes
  • Diagnostic Procedure
• Pinpoint Test 3: The Engine Does Not Reach Normal Operating Temperature
  • Normal Operation
  • Possible Causes
  • Diagnostic Procedure
• Symptom Troubleshooting Chart - Fueling
• Pinpoint Test 1 Hissing Sound When Inserting Fuel Nozzle
• Pinpoint Test 2: Excessive Fuel Odor
• Pinpoint Test 3: Unable To Refuel (ORVR)
• Pinpoint Test 4: Slow To Fill
  • Normal Operation
  • Possible Causes
• Symptom Troubleshooting Chart - Charging System
• Connector End Views - Charging System
• PINPOINT TEST 1: DTCs B1317, B1676 AND/OR P0563 - BATTERY/SYSTEM VOLTAGE HIGH AND/OR BATTERY PACK VOLTAGE OUT OF RANGE
  • Normal Operation
  • Possible Causes
  • Diagnostic Procedure
• Pinpoint Test 2: DTC B1318 And/Or B1676 - Battery Voltage Low And/Or Battery Pack Voltage Out Of Range
  • Normal Operation
  • Possible Causes
  • Diagnostic Procedure
• Pinpoint Test 3: DTC P0620 - Generator Control Circuit
  • Normal Operation
  • Possible Causes
  • Diagnostic Procedure
• Pinpoint Test 4: DTC P0625 And P0626 - Generator Field Terminal Circuit Stuck Low/High
  • Normal Operation
  • Possible Causes
  • Diagnostic Procedure
• Pinpoint Test 5: DTC P065B - Generator Control Circuit Range/Performance
  • Normal Operation
  • Possible Causes
  • Diagnostic Procedure
• Pinpoint Test 6: The Generator Is Noisy
  • Normal Operation
  • Possible Causes
  • Diagnostic Procedure
• Pinpoint Test 7: Radio Interference
  • Normal Operation
  • Possible Causes
  • Diagnostic Procedure
• Starting System - Principles Of Operation
  • Notes
  • Starting System - Anti-Theft Intervention
• Starting System - Inspection/Verification
• Starting System DTC Chart
• Symptom Troubleshooting Chart - Starting System
• Connector End Views - Starting System
• Pinpoint Test 1: The Engine Does Not Crank
  • Normal Operation
  • Possible Causes
  • Diagnostic Procedure
• Pinpoint Test 2: One-Touch Integrated Start (OTIS) Does Not Operate Correctly
  • Normal Operation
  • Possible Causes
  • Diagnostic Procedure
• Pinpoint Test 3: Unusual Starter Noise
  • Possible Causes
  • Diagnostic Procedure
• Component Test - Starter Motor Relay
• Speed Control
  • Notes
  • Principles of Operation
  • Inspection and Verification
  • Speed Control DTC Charts
    • PCM DTC Chart
• Symptom Troubleshooting Chart - Speed Control
• Connector End Views - Speed Control
• Pinpoint Test 1: The Speed Control Is Inoperative
  • Normal Operation
  • Possible Causes
  • Diagnostic Procedure
• Pinpoint Test 2: DTC P1572 Or DTC P1703 - Brake Switch Circuit Failure
  • Normal Operation
  • Possible Causes
  • Diagnostic Procedure
• Pinpoint Test 3: The Speed Control Switches Do Not Operate Correctly
  • Notes
  • Normal Operation
  • Possible Causes
  • Diagnostic Procedure
• Pinpoint Test 4: The Speed Control Does Not Disengage When The Clutch Is Applied
  • Normal Operation
  • Possible Causes
  • Diagnostic Procedure
• Keep Alive Power (KAPWR)
• Unable To Activate Self-Test/Network Communication Error
• General Test Index
• Test 1: Vehicle Reference Voltage (VREF)
• Test 2: Malfunction Indicator Lamp (Mil)
• Test 3: Intermittent
• Test 4: Fuel Delivery System
• Test 5: Positive Crankcase Ventilation (PCV) System
• Test 6: Pcm Power Relay
• Test 7: Fuel Pump Inspection
• Test 8: Fuel Line/Fuel Pressure Hold Inspection
• Test 9: Fuel Injector Inspection
• Test 10: No Start
• Test 11: Ignition Scope Test
  • Notes
  • 2.5L
  • 3.0L