Contents

Trouble diagnosis - index

• Alphabetical and P No. Index for DTC

Precautions

• Precautions for supplemental restraint system (SRS) “Air bag” and “Seat belt pre-tensioner”
• Precautions for on board diagnostic (OBD) system of engine and A/T
• Engine fuel and emission control system
• Precautions
• Wiring diagrams and trouble diagnosis

Preparation

• Special service tools
• Commercial service tools

Engine and emission control overall system

• Engine control component parts location
• Circuit diagram
• System diagram
• Vacuum hose drawing
• System chart

Engine and emission basic control system description

• Multiport fuel injection (MFI) system
• Distributor ignition (DI) system
• Air conditioning cut control
• Fuel cut control (at no load and high engine speed)
• Evaporative emission system
• Positive crankcase ventilation

Basic service procedure

• Fuel pressure release
• Fuel pressure check
• Fuel pressure regulator check
• Injector
• Fast idle cam (FIC)
• Idle speed / ignition timing / idle mixture ratio adjustment

On board diagnostic system description

• Introduction
• Two trip detection logic
• Emission-related diagnostic information
• Malfunction indicator lamp (MIL)
• OBD system operation chart
• Consult-II
• Generic scan tool (GST)

Trouble diagnosis - introduction

• Introduction
• Work flow

Trouble diagnosis - basic inspection

• Basic inspection

Trouble diagnosis - general description

• DTC inspection priority chart
• Fail-safe chart
• Symptom matrix chart
• Consult-II reference value in data monitor mode
• Major sensor reference graph in data monitor mode
• ECM terminals and reference value

Trouble diagnosis - specification value

• Description
• Testing condition
• Inspection procedure
• Diagnostic procedure

Trouble diagnosis for intermittent incident

• Description
• Diagnostic procedure

Trouble diagnosis for power supply

• Main power supply and ground circuit

DTC P0100 mass air flow sensor (MAFS)

• Component description
• Consult-II reference value in data monitor mode
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Overall function check
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0105 absolute pressure sensor

• Component description
• On board diagnosis logic
• DTC confirmation procedure
• Overall function check
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0110 intake air temperature sensor

• Component description
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0115 engine coolant temperature sensor (ECTS) (circuit)

• Component description
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0120 throttle position sensor

• Description
• Consult-II reference value in data monitor mode
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0125 engine coolant temperature (ECT) sensor

• Description
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0130 heated oxygen sensor 1 (front) (circuit)

• Component description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Overall function check
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0131 heated oxygen sensor 1 (front) (lean shift monitoring)

• Component description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Overall function check
• Diagnostic procedure
• Component inspection

DTC P0132 heated oxygen sensor 1 (front) (rich shift monitoring)

• Component description
• Consult-II reference value in data monitor
• ECM Terminals and Reference Value
• On board diagnosis logic
• DTC confirmation procedure
• Overall function check
• Diagnostic procedure
• Component inspection

DTC P0133 heated oxygen sensor 1 (front) (response monitoring)

• Component description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Overall function check
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0134 heated oxygen sensor 1 (front) (high voltage)

• Component description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0135 heated oxygen sensor 1 heater (front)

• Description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0137 heated oxygen sensor 2 (rear) (min. voltage monitoring)

• Component description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Overall function check
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0138 heated oxygen sensor 2 (rear) (max. voltage monitoring)

• Component description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Overall function check
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0139 heated oxygen sensor 2 (rear) (response monitoring)

• Component description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Overall function check
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0140 heated oxygen sensor 2 (rear) (high voltage)

• Component description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Overall function check
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0141 heated oxygen sensor 2 heater (rear)

• Description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0171 fuel injection system function (lean side)

• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure

DTC P0172 fuel injection system function (rich side)

• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure

DTC P0180 fuel tank temperature sensor

• Component description
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0300 - P0306 NO.6-1 cylinder misfire, multiple cylinder misfire

• On board diagnosis logic
• DTC confirmation procedure
• Diagnostic procedure
• Component inspection

DTC P0325 knock sensor (KS)

• Component description
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0335 crankshaft position sensor (CKPS) (OBD)

• Component description
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0340 camshaft position sensor (CMPS)

• Component description
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0420 three way catalyst function

• On board diagnosis logic
• DTC confirmation procedure
• Overall function check
• Diagnostic procedure

DTC P0440 EVAP control system (small leak) (negative pressure)

• On board diagnosis logic
• DTC confirmation procedure
• Diagnostic procedure

DTC P0443 EVAP canister purge volume control solenoid valve (circuit)

• Description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0446 evaporative emission (EVAP) canister vent control valve (circuit)

• Component description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0450 evaporative emission (EVAP) control system pressure sensor

• Component description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0455 EVAP control system (gross leak)

• On board diagnosis logic
• DTC confirmation procedure
• Diagnostic procedure

DTC P0500 vehicle speed sensor (VSS)

• Component description
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Overall function check
• Wiring diagram
• Diagnostic procedure

DTC P0505 idle air control valve (IACV) - auxiliary air control (AAC) valve

• Description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0510 closed throttle position switch

• Component description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Overall function check
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P0600 A/T control

• System description
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Overall function check
• Wiring diagram
• Diagnostic procedure

DTC P0605 ECM

• Component description
• On board diagnosis logic
• DTC confirmation procedure
• Diagnostic procedure

DTC P1105 MAP / BARO switch solenoid valve

• Description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P1148 closed loop control

• On board diagnosis logic
• DTC confirmation procedure
• Overall function check
• Diagnostic procedure

DTC P1217 engine over temperature (overheat)

• System description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• Overall function check
• Wiring diagram
• Diagnostic procedure
• Main 12 causes of overheating
• Component inspection

DTC P1320 ignition signal

• Component description
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P1336 crankshaft position sensor (CKPS) (OBD) (COG)

• Component description
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P1440 EVAP control system (small leak) (positive pressure)

• On board diagnosis logic
• DTC confirmation procedure

DTC P1444 EVAP canister purge volume control solenoid valve

• Description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P1446 evaporative emission (EVAP) canister vent control valve (close)

• Component description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P1447 evaporative emission (EVAP) control system purge flow monitoring

• System description
• On board diagnosis logic
• DTC confirmation procedure
• Overall function check
• Diagnostic procedure

DTC P1448 evaporative emission (EVAP) canister vent control valve (open)

• Component description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Overall function check
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P1490 vacuum cut valve bypass valve (circuit)

• Description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P1491 vacuum cut valve bypass valve

• Description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Overall function check
• Wiring diagram
• Diagnostic procedure
• Component inspection

DTC P1605 A/T diagnosis communication line

• Component description
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Wiring diagram
• Diagnostic procedure

DTC P1706 park / neutral position (PNP) switch

• Component description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• On board diagnosis logic
• DTC confirmation procedure
• Overall function check
• Wiring diagram
• Diagnostic procedure

Injector

• Component description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• Wiring diagram
• Diagnostic procedure
• Component inspection

Start signal

• Consult-II reference value in data monitor
• ECM terminals and reference value
• Wiring diagram
• Diagnostic procedure

Fuel pump

• System description
• Component description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• Wiring diagram
• Diagnostic procedure
• Component inspection

Power steering oil pressure switch

• Component description
• Consult-II reference value in data monitor
• ECM terminals and reference value
• Wiring diagram
• Diagnostic procedure
• Component inspection

Iacv-ficd solenoid valve

• Component description
• ECM terminals and reference value
• Wiring diagram
• Diagnostic procedure
• Component inspection

Air conditioner high pressure switch

• System description
• ECM terminals and reference value
• Wiring diagram
• Diagnostic procedure
• Component inspection

Mil and data link connectors

• Wiring diagram

Service data and specifications (SDS)

• Fuel pressure regulator
• Idle speed and ignition timing
• Ignition coil
• Mass air flow sensor
• Engine coolant temperature sensor
• Heated oxygen sensor 1 heater (front)
• Fuel pump
• IACV-AAC valve
• Injector
• Resistor
• Throttle position sensor
• Calculated load value
• Intake air temperature sensor
• Heated oxygen sensor 2 heater (rear)
• Crankshaft position sensor (OBD)
• Fuel tank temperature sensor