EasyManua.ls Logo

Toyota 2VZ-FE User Manual

Toyota 2VZ-FE
324 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
ENGINE MECHANICAL
EM-1
ENGINE MECHANICAL – Description, Operation

Table of Contents

Question and Answer IconNeed help?

Do you have a question about the Toyota 2VZ-FE and is the answer not in the manual?

Toyota 2VZ-FE Specifications

General IconGeneral
Engine TypeV6
Compression Ratio9.0:1
Fuel SystemMulti-Point Fuel Injection
Fuel TypeGasoline
ValvetrainDOHC, 4 valves per cylinder
Block MaterialCast Iron
Head MaterialAluminum
Displacement2.5 L
Bore x Stroke87.5 mm x 69.2 mm (3.44 in x 2.72 in)

Summary

ENGINE MECHANICAL

PREPARATION

Preparation steps and special service tools for engine mechanical tasks.

SST (SPECIAL SERVICE TOOLS)

Lists special service tools required for engine mechanical procedures.

ENGINE TUNE–UP

Covers inspections and adjustments related to engine tune-up procedures.

INSPECTION AND ADJUSTMENT OF VALVE CLEARANCE

Details the process for inspecting and adjusting engine valve clearance.

Adjusting Shim Selection Using Chart

Provides charts for selecting appropriate shims for valve clearance adjustment.

INTAKE

Specific information related to intake system adjustments and specifications.

INSPECTION AND ADJUSTMENT OF IGNITION TIMING

Procedure for inspecting and adjusting the engine's ignition timing.

Troubleshooting

Guidance for diagnosing and resolving engine mechanical problems.

COMPRESSION CHECK

Procedure for checking the compression pressure of engine cylinders.

TIMING BELT COMPONENTS

Overview of components related to the engine's timing belt system.

REMOVAL OF TIMING BELT

Step-by-step instructions for removing the engine timing belt.

INSPECTION OF TIMING BELT COMPONENTS

Details on inspecting various components of the timing belt system.

INSTALLATION OF TIMING BELT

Procedure for installing the engine timing belt and related components.

CYLINDER HEADS COMPONENTS

Diagram and list of components related to the engine cylinder heads.

REMOVAL OF CYLINDER HEADS

Instructions for the removal of the engine cylinder heads.

DISASSEMBLY OF CYLINDER HEADS

Steps for disassembling the engine cylinder heads.

INSPECTION, CLEANING AND REPAIR OF CYLINDER HEAD COMPONENTS

Procedures for inspecting, cleaning, and repairing cylinder head parts.

INSPECT CAMSHAFTS AND BEARINGS

Guide for inspecting camshafts and their associated bearings.

ASSEMBLY OF CYLINDER HEADS

Instructions for the reassembly of engine cylinder heads.

INSTALLATION OF CYLINDER HEADS

Procedure for installing the engine cylinder heads.

CYLINDER BLOCK

CYLINDER BLOCK REMOVAL OF ENGINE

Steps for removing the engine assembly from the cylinder block.

CYLINDER BLOCK COMPONENTS

Diagram and list of components related to the cylinder block.

CYLINDER BLOCK PREPARATION FOR DISASSEMBLY

Preparation steps before disassembling the cylinder block.

CYLINDER BLOCK DISASSEMBLY OF CYLINDER BLOCK

Detailed instructions for disassembling the cylinder block.

CYLINDER BLOCK INSPECTION AND REPAIR OF CRANKSHAFT

Procedures for inspecting and repairing the engine crankshaft.

CYLINDER BLOCK ASSEMBLY OF PISTON AND CONNECTING ROD ASSEMBLIES

Steps for assembling the piston and connecting rod assemblies.

CYLINDER BLOCK ASSEMBLY OF CYLINDER BLOCK

Instructions for the reassembly of the cylinder block.

CYLINDER BLOCK INSTALLATION OF ENGINE

Procedure for installing the engine assembly into the vehicle.

SERVICE SPECIFICATIONS

SERVICE SPECIFICATIONS SPECIFICATIONS

Compilation of technical specifications and values for service.

EFI SYSTEM

DESCRIPTION

General description of the Electronic Fuel Injection system.

PREPARATION SST (SPECIAL SERVICE TOOLS)

Lists special service tools and recommended equipment for EFI system.

OPERATION System Circuit

Diagram illustrating the EFI system's electrical circuit operation.

System Operation FUEL SYSTEM

Description of the EFI system's fuel supply operation.

AIR INDUCTION SYSTEM

Explanation of the EFI system's air intake and control.

ELECTRONIC CONTROL SYSTEM

Overview of the EFI system's electronic control unit and sensors.

PRECAUTIONS INSPECTION PRECAUTIONS MAINTENANCE PRECAUTIONS

Important precautions for EFI system inspection and maintenance.

FUEL SYSTEM

Detailed information and procedures for the EFI fuel system.

FUEL SYSTEM Fuel Pump

Description and inspection of the EFI system's fuel pump.

REMOVAL OF FUEL PUMP

Steps for removing the EFI system's fuel pump.

Cold Start Injector

Information on the EFI system's cold start injector.

Fuel Pressure Regulator

Details on the EFI system's fuel pressure regulator.

Injectors

Information regarding EFI system injectors, including inspection.

Injectors REMOVAL OF INJECTORS

Procedure for removing the EFI system injectors.

Injectors INSPECTION OF INJECTORS

Steps for inspecting the EFI system injectors.

Injectors INSTALLATION OF INJECTORS

Procedure for installing the EFI system injectors.

Fuel Tank and Lines COMPONENTS

Diagram and list of components for the EFI fuel tank and lines.

AIR INDUCTION SYSTEM Air Flow Meter

Details on the EFI system's air flow meter.

Throttle Body

Information and inspection of the EFI system's throttle body.

Idle Speed Control (ISC) Valve

Inspection and service procedures for the EFI system's ISC valve.

Electronic Control Unit (ECU) TERMINALS OF ECU

Layout and terminal identification for the EFI system's ECU.

INSPECTION OF ECU

Procedures for inspecting the EFI system's Electronic Control Unit.

Fuel Cut RPM INSPECTION OF FUEL CUT RPM

Inspection procedure for the EFI system's fuel cut RPM.

EXHAUST SYSTEM

EXHAUST PIPES AND HEAT INSULATORS COMPONENTS

Diagram and list of components for exhaust pipes and heat insulators.

EMISSION CONTROL SYSTEMS

SYSTEM PURPOSE

Overview of emission control systems and their purposes.

COMPONENT LAYOUT AND SCHEMATIC DRAWING

Layout and schematic diagrams of emission control systems.

POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM

Details on the PCV system for emission control.

INSPECTION OF PCV VALVE

Procedure for inspecting the PCV valve.

FUEL EVAPORATIVE EMISSION CONTROL (EVAP) SYSTEM

Explanation of the EVAP system for fuel emissions control.

INSPECTION OF CHARCOAL CANISTER

Procedure for inspecting the charcoal canister in the EVAP system.

EXHAUST GAS RECIRCULATION (EGR) SYSTEM

Details on the EGR system for emission control.

INSPECTION OF EGR SYSTEM

Procedures for inspecting the EGR system components.

THREE–WAY CATALYST (TWC) SYSTEM

Information on the three-way catalyst system for emission control.

COOLING SYSTEM

DESCRIPTION

General description of the engine cooling system.

OPERATION

Explanation of how the engine cooling system operates.

PREPARATION RECOMMENDED TOOLS

Recommended tools for cooling system preparation.

CHECK AND REPLACEMENT OF ENGINE COOLANT

Procedure for checking and replacing engine coolant.

WATER PUMP COMPONENTS

Diagram and list of components for the water pump.

REMOVAL OF WATER PUMP

Step-by-step instructions for removing the water pump.

WATER PUMP INSPECTION OF WATER PUMP

Procedure for inspecting the water pump.

THERMOSTAT REMOVAL OF THERMOSTAT

Procedure for removing the engine thermostat.

RADIATOR CLEANING OF RADIATOR

Instructions for cleaning the engine radiator.

INSPECTION OF RADIATOR

Procedure for inspecting the radiator and its components.

REMOVAL OF RADIATOR

Steps for removing the engine radiator.

INSTALLATION OF RADIATOR

Procedure for installing the engine radiator.

ELECTRIC COOLING FANS SYSTEM CIRCUIT

Diagram of the electric cooling fan system circuit.

LOCATION OF ELECTRIC COOLING FAN COMPONENTS

Location of electric cooling fan system components.

ON–VEHICLE INSPECTION

On-vehicle inspection procedures for electric cooling fans.

Low Temperature (Below 85C (185F))

Inspection steps for cooling fans at low temperatures.

INSPECTION OF ELECTRIC COOLING FAN COMPONENTS

Inspection of individual electric cooling fan components.

LUBRICATION SYSTEM

DESCRIPTION

General description of the engine lubrication system.

OPERATION

Explanation of how the engine lubrication system operates.

OIL PUMP

Description and operation of the engine oil pump.

PREPARATION SST (SPECIAL SERVICE TOOLS)

Special service tools and equipment for lubrication system prep.

OIL PRESSURE CHECK

Procedure for checking engine oil pressure.

REPLACEMENT OF ENGINE OIL AND OIL FILTER

Steps for replacing engine oil and the oil filter.

OIL PUMP REMOVAL OF OIL PUMP

Instructions for removing the engine oil pump.

DISASSEMBLY OF OIL PUMP

Steps for disassembling the engine oil pump.

INSPECTION OF OIL PUMP

Procedures for inspecting the engine oil pump.

ASSEMBLY OF OIL PUMP

Instructions for assembling the engine oil pump.

INSTALLATION OF OIL PUMP

Procedure for installing the engine oil pump.

IGNITION SYSTEM

GENERAL DESCRIPTION PRECAUTIONS

General precautions for the ignition system.

DESCRIPTION

Overview of the ignition system's components and function.

PREPARATION SST (SPECIAL SERVICE TOOLS)

Special service tools for ignition system preparation.

ON–VEHICLE INSPECTION SPARK TEST

Procedure for performing a spark test on the ignition system.

INSPECTION OF HIGH–TENSION CORDS

Inspection procedures for high-tension ignition cords.

INSPECTION OF IGNITION COIL

Inspection procedures for the ignition coil.

INSPECTION OF DISTRIBUTOR

Inspection procedures for the ignition system distributor.

DISTRIBUTOR COMPONENTS

Diagram and list of distributor components.

REMOVAL OF DISTRIBUTOR

Steps for removing the ignition system distributor.

INSTALLATION OF DISTRIBUTOR

Procedure for installing the ignition system distributor.

ADJUST IGNITION TIMING

Procedure for adjusting the engine's ignition timing.

ENGINE TROUBLESHOOTING

HOW TO PROCEED WITH TROUBLESHOOTING

General guidelines on how to approach engine troubleshooting.

How to Proceed with Troubleshooting Using Volt/Ohm Meter and TCCS Checker

Using diagnostic tools for troubleshooting engine control system issues.

CUSTOMER PROBLEM ANALYSIS CHECK SHEET ENGINE CONTROL System Check Sheet

Customer problem analysis form for engine control system issues.

DIAGNOSIS SYSTEM DESCRIPTION

Explanation of the engine's diagnostic system.

Diagnosis Inspection ”CHECK” ENGINE WARNING LIGHT CHECK

Procedure for checking the 'CHECK' engine warning light.

DIAGNOSTIC CODES

List and explanation of diagnostic trouble codes for the engine.

SYMPTOM SIMULATION

Methods for simulating symptoms to diagnose intermittent problems.

TERMINALS OF ECU

Identification of ECU connector terminals for troubleshooting.

DIAGNOSTIC CODE CHART

Chart correlating diagnostic codes with inspection circuits.

BASIC INSPECTION

Fundamental checks to perform before detailed troubleshooting.

MATRIX CHART OF PROBLEM SYMPTOMS

Chart correlating problem symptoms with relevant systems.

CIRCUIT INSPECTION

Detailed circuit inspection procedures for diagnosing faults.

Diag. Code 12 RPM Signal

Troubleshooting steps for diagnostic code 12 (RPM Signal).

Diag. Code 16 ECT Control Signal CIRCUIT DESCRIPTION

Circuit description for diagnostic code 16 (ECT Control Signal).

INSPECTION PROCEDURE

Step-by-step inspection procedures for troubleshooting.

Diag. Code 22 Water Temp. Sensor Signal CIRCUIT DESCRIPTION

Circuit description for diagnostic code 22 (Water Temp. Sensor).

INSPECTION PROCEDURE

Inspection steps for diagnosing water temperature sensor issues.

Diag. Code 24 Intake Air Temp. Sensor Signal CIRCUIT DESCRIPTION

Circuit description for diagnostic code 24 (Intake Air Temp. Sensor).

INSPECTION PROCEDURE

Inspection steps for diagnosing intake air temp. sensor issues.

DIAGNOSTIC CHART

Diagnostic chart for air-fuel ratio lean/rich malfunctions.

INSPECTION PROCEDURE

Inspection steps for air-fuel ratio related faults.

Diag. Code 27 Sub–oxygen Sensor Signal (California Only) CIRCUIT DESCRIPTION

Circuit description for diagnostic code 27 (Sub-Oxygen Sensor).

DIAGNOSTIC CHART

Diagnostic chart for sub-oxygen sensor faults.

INSPECTION PROCEDURE

Inspection steps for diagnosing sub-oxygen sensor issues.

Diag. Code 31 or 32 Air Flow Meter Signal CIRCUIT DESCRIPTION

Circuit description for diagnostic codes 31/32 (Air Flow Meter).

INSPECTION PROCEDURE

Inspection steps for diagnosing air flow meter issues.

Diag. Code 41 Throttle Position Sensor Signal CIRCUIT DESCRIPTION

Circuit description for diagnostic code 41 (Throttle Position Sensor).

INSPECTION PROCEDURE

Inspection steps for diagnosing throttle position sensor issues.

Diag. Code 42 Vehicle Speed Sensor Signal CIRCUIT DESCRIPTION

Circuit description for diagnostic code 42 (Vehicle Speed Sensor).

INSPECTION PROCEDURE

Inspection steps for diagnosing vehicle speed sensor issues.

Diag. Code 43 Starter Signal CIRCUIT DESCRIPTION

Circuit description for diagnostic code 43 (Starter Signal).

INSPECTION PROCEDURE

Inspection steps for diagnosing starter signal issues.

Diag. Code 52 Knock Sensor Signal CIRCUIT DESCRIPTION

Circuit description for diagnostic code 52 (Knock Sensor).

DIAGNOSIS CODE DETECTION DRIVING PATTERN

Driving pattern for detecting knock sensor malfunctions.

DIAGNOSTIC CHART

Diagnostic chart for knock sensor issues.

INSPECTION PROCEDURE

Inspection steps for diagnosing knock sensor issues.

Diag. Code 53 Knock Control Signal CIRCUIT DESCRIPTION

Circuit description for diagnostic code 53 (Knock Control).

DIAGNOSTIC CHART

Diagnostic chart for knock control system issues.

Diag. Code 71 EGR System Malfunction (California Only) CIRCUIT DESCRIPTION

Circuit description for diagnostic code 71 (EGR System).

DIAGNOSIS CODE DETECTION DRIVING PATTERN

Driving pattern for detecting EGR system malfunctions.

DIAGNOSTIC CHART

Diagnostic chart for EGR system malfunctions.

INSPECTION PROCEDURE

Inspection steps for diagnosing EGR system issues.

Diag. Code 51 Switch Condition Signal CIRCUIT DESCRIPTION

Circuit description for diagnostic code 51 (Switch Condition).

DIAGNOSTIC CHART

Diagnostic chart for switch condition signals.

INSPECTION PROCEDURE

Inspection steps for diagnosing switch condition signals.

INSPECTION PROCEDURE

Inspection steps for diagnosing throttle position sensor signals.

EXHAUST SYSTEM

EXHAUST PIPES AND HEAT INSULATORS COMPONENTS

Diagram and list of components for exhaust pipes and heat insulators.

EMISSION CONTROL SYSTEMS

SYSTEM PURPOSE

Overview of emission control systems and their purposes.

COMPONENT LAYOUT AND SCHEMATIC DRAWING

Layout and schematic diagrams of emission control systems.

POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM

Details on the PCV system for emission control.

INSPECTION OF PCV VALVE

Procedure for inspecting the PCV valve.

FUEL EVAPORATIVE EMISSION CONTROL (EVAP) SYSTEM

Explanation of the EVAP system for fuel emissions control.

INSPECTION OF CHARCOAL CANISTER

Procedure for inspecting the charcoal canister in the EVAP system.

EXHAUST GAS RECIRCULATION (EGR) SYSTEM

Details on the EGR system for emission control.

INSPECTION OF EGR SYSTEM

Procedures for inspecting the EGR system components.

THREE–WAY CATALYST (TWC) SYSTEM

Information on the three-way catalyst system for emission control.

COOLING SYSTEM

DESCRIPTION

General description of the engine cooling system.

OPERATION

Explanation of how the engine cooling system operates.

PREPARATION RECOMMENDED TOOLS

Recommended tools for cooling system preparation.

CHECK AND REPLACEMENT OF ENGINE COOLANT

Procedure for checking and replacing engine coolant.

WATER PUMP COMPONENTS

Diagram and list of components for the water pump.

REMOVAL OF WATER PUMP

Step-by-step instructions for removing the water pump.

WATER PUMP INSPECTION OF WATER PUMP

Procedure for inspecting the water pump.

THERMOSTAT REMOVAL OF THERMOSTAT

Procedure for removing the engine thermostat.

RADIATOR CLEANING OF RADIATOR

Instructions for cleaning the engine radiator.

INSPECTION OF RADIATOR

Procedure for inspecting the radiator and its components.

REMOVAL OF RADIATOR

Steps for removing the engine radiator.

INSTALLATION OF RADIATOR

Procedure for installing the engine radiator.

ELECTRIC COOLING FANS SYSTEM CIRCUIT

Diagram of the electric cooling fan system circuit.

LOCATION OF ELECTRIC COOLING FAN COMPONENTS

Location of electric cooling fan system components.

ON–VEHICLE INSPECTION

On-vehicle inspection procedures for electric cooling fans.

Low Temperature (Below 85C (185F))

Inspection steps for cooling fans at low temperatures.

INSPECTION OF ELECTRIC COOLING FAN COMPONENTS

Inspection of individual electric cooling fan components.

LUBRICATION SYSTEM

DESCRIPTION

General description of the engine lubrication system.

OPERATION

Explanation of how the engine lubrication system operates.

OIL PUMP

Description and operation of the engine oil pump.

PREPARATION SST (SPECIAL SERVICE TOOLS)

Special service tools and equipment for lubrication system prep.

OIL PRESSURE CHECK

Procedure for checking engine oil pressure.

REPLACEMENT OF ENGINE OIL AND OIL FILTER

Steps for replacing engine oil and the oil filter.

OIL PUMP REMOVAL OF OIL PUMP

Instructions for removing the engine oil pump.

DISASSEMBLY OF OIL PUMP

Steps for disassembling the engine oil pump.

INSPECTION OF OIL PUMP

Procedures for inspecting the engine oil pump.

ASSEMBLY OF OIL PUMP

Instructions for assembling the engine oil pump.

INSTALLATION OF OIL PUMP

Procedure for installing the engine oil pump.

IGNITION SYSTEM

GENERAL DESCRIPTION PRECAUTIONS

General precautions for the ignition system.

DESCRIPTION

Overview of the ignition system's components and function.

PREPARATION SST (SPECIAL SERVICE TOOLS)

Special service tools for ignition system preparation.

ON–VEHICLE INSPECTION SPARK TEST

Procedure for performing a spark test on the ignition system.

INSPECTION OF HIGH–TENSION CORDS

Inspection procedures for high-tension ignition cords.

INSPECTION OF IGNITION COIL

Inspection procedures for the ignition coil.

INSPECTION OF DISTRIBUTOR

Inspection procedures for the ignition system distributor.

DISTRIBUTOR COMPONENTS

Diagram and list of distributor components.

REMOVAL OF DISTRIBUTOR

Steps for removing the ignition system distributor.

INSTALLATION OF DISTRIBUTOR

Procedure for installing the ignition system distributor.

ADJUST IGNITION TIMING

Procedure for adjusting the engine's ignition timing.

ENGINE TROUBLESHOOTING

HOW TO PROCEED WITH TROUBLESHOOTING

General guidelines on how to approach engine troubleshooting.

How to Proceed with Troubleshooting Using Volt/Ohm Meter and TCCS Checker

Using diagnostic tools for troubleshooting engine control system issues.

CUSTOMER PROBLEM ANALYSIS CHECK SHEET ENGINE CONTROL System Check Sheet

Customer problem analysis form for engine control system issues.

DIAGNOSIS SYSTEM DESCRIPTION

Explanation of the engine's diagnostic system.

Diagnosis Inspection ”CHECK” ENGINE WARNING LIGHT CHECK

Procedure for checking the 'CHECK' engine warning light.

DIAGNOSTIC CODES

List and explanation of diagnostic trouble codes for the engine.

SYMPTOM SIMULATION

Methods for simulating symptoms to diagnose intermittent problems.

VIBRATION METHOD:

Troubleshooting technique using vibration to trigger faults.

TERMINALS OF ECU

Identification of ECU connector terminals for troubleshooting.

DIAGNOSTIC CODE CHART

Chart correlating diagnostic codes with inspection circuits.

BASIC INSPECTION

Fundamental checks to perform before detailed troubleshooting.

MATRIX CHART OF PROBLEM SYMPTOMS

Chart correlating problem symptoms with relevant systems.

CIRCUIT INSPECTION

Detailed circuit inspection procedures for diagnosing faults.

Diag. Code 12 RPM Signal

Troubleshooting steps for diagnostic code 12 (RPM Signal).

Diag. Code 16 ECT Control Signal CIRCUIT DESCRIPTION

Circuit description for diagnostic code 16 (ECT Control Signal).

INSPECTION PROCEDURE

Step-by-step inspection procedures for troubleshooting.

Diag. Code 22 Water Temp. Sensor Signal CIRCUIT DESCRIPTION

Circuit description for diagnostic code 22 (Water Temp. Sensor).

INSPECTION PROCEDURE

Inspection steps for diagnosing water temperature sensor issues.

Diag. Code 24 Intake Air Temp. Sensor Signal CIRCUIT DESCRIPTION

Circuit description for diagnostic code 24 (Intake Air Temp. Sensor).

INSPECTION PROCEDURE

Inspection steps for diagnosing intake air temp. sensor issues.

DIAGNOSTIC CHART

Diagnostic chart for air-fuel ratio lean/rich malfunctions.

INSPECTION PROCEDURE

Inspection steps for air-fuel ratio related faults.

Diag. Code 27 Sub–oxygen Sensor Signal (California Only) CIRCUIT DESCRIPTION

Circuit description for diagnostic code 27 (Sub-Oxygen Sensor).

DIAGNOSTIC CHART

Diagnostic chart for sub-oxygen sensor faults.

INSPECTION PROCEDURE

Inspection steps for diagnosing sub-oxygen sensor issues.

Diag. Code 31 or 32 Air Flow Meter Signal CIRCUIT DESCRIPTION

Circuit description for diagnostic codes 31/32 (Air Flow Meter).

INSPECTION PROCEDURE

Inspection steps for diagnosing air flow meter issues.

Diag. Code 41 Throttle Position Sensor Signal CIRCUIT DESCRIPTION

Circuit description for diagnostic code 41 (Throttle Position Sensor).

INSPECTION PROCEDURE

Inspection steps for diagnosing throttle position sensor issues.

Diag. Code 42 Vehicle Speed Sensor Signal CIRCUIT DESCRIPTION

Circuit description for diagnostic code 42 (Vehicle Speed Sensor).

INSPECTION PROCEDURE

Inspection steps for diagnosing vehicle speed sensor issues.

Diag. Code 43 Starter Signal CIRCUIT DESCRIPTION

Circuit description for diagnostic code 43 (Starter Signal).

INSPECTION PROCEDURE

Inspection steps for diagnosing starter signal issues.

Diag. Code 52 Knock Sensor Signal CIRCUIT DESCRIPTION

Circuit description for diagnostic code 52 (Knock Sensor).

DIAGNOSIS CODE DETECTION DRIVING PATTERN

Driving pattern for detecting knock sensor malfunctions.

DIAGNOSTIC CHART

Diagnostic chart for knock sensor issues.

INSPECTION PROCEDURE

Inspection steps for diagnosing knock sensor issues.

Diag. Code 53 Knock Control Signal CIRCUIT DESCRIPTION

Circuit description for diagnostic code 53 (Knock Control).

DIAGNOSTIC CHART

Diagnostic chart for knock control system issues.

Diag. Code 71 EGR System Malfunction (California Only) CIRCUIT DESCRIPTION

Circuit description for diagnostic code 71 (EGR System).

DIAGNOSIS CODE DETECTION DRIVING PATTERN

Driving pattern for detecting EGR system malfunctions.

DIAGNOSTIC CHART

Diagnostic chart for EGR system malfunctions.

INSPECTION PROCEDURE

Inspection steps for diagnosing EGR system issues.

Diag. Code 51 Switch Condition Signal CIRCUIT DESCRIPTION

Circuit description for diagnostic code 51 (Switch Condition).

DIAGNOSTIC CHART

Diagnostic chart for switch condition signals.

INSPECTION PROCEDURE

Inspection steps for diagnosing switch condition signals.

INSPECTION PROCEDURE

Inspection steps for diagnosing throttle position sensor signals.

Related product manuals