Lexus ES300 (2002 year). Service manual — part 386

-

DIAGNOSTICS

SFI SYSTEM (1MZ-FE)

05-19

172

2002 LEXUS ES300 REPAIR MANUAL (RM911U)

P0171

(

05-66

)

System too Lean (Fuel Trim)
(Bank 1)

Air induction system

Injector blockage

Intake air flow meter

E.F.I. engine coolant temp. sensor

Fuel pressure

Gas leakage on exhaust system

Open or short in A/F sensor (bank 1, sensor 1) circuit

A/F sensor (bank 1, sensor 1)

PCV hose connection

ECM

P0172

(

05-66

)

System too Rich (Fuel Trim)
(Bank 1)

Injector leak, blockage

Intake air flow meter

E.F.I. engine coolant temp. sensor

Ignition system

Fuel pressure

Gas leakage on exhaust system

Open or short in A/F sensor (bank 1, sensor 1) circuit

A/F sensor (bank 1, sensor 1)

PCV hose connection

ECM

P0174

(

05-66

)

System too Lean (Fuel Trim)
(Bank2)

Air induction system

Injector blockage

Intake air flow meter

E.F.I. engine coolant temp. sensor

Fuel pressure

Gas leakage on exhaust system

Open or short in A/F sensor (bank 2, sensor 1) circuit

A/F sensor (bank 2, sensor 1)

PCV hose connection

ECM

P0175

(

05-66

)

System too Rich (Fuel Trim)
(Bank2)

Injector leak, blockage

Intake air flow meter

E.F.I. engine coolant temp. sensor

Ignition system

Fuel pressure

Gas leakage on exhaust system

Open or short in A/F sensor (bank 2, sensor 1) circuit

A/F sensor (bank 2, sensor 1)

PCV hose connection

ECM

P0300

(

05-71

)

Random/Multiple Cylinder Misfire
Detected

Open or short in engine wire

Connector connection

Vacuum hose connection

Ignition system

Injector

Fuel pressure

Intake air flow meter

E.F.I. engine coolant temp. sensor

Compression pressure

Valve clearance

Valve timing

PCV hose connection

ECM

*2

05-20

-

DIAGNOSTICS

SFI SYSTEM (1MZ-FE)

173

2002 LEXUS ES300 REPAIR MANUAL (RM911U)

P0301

(

05-71

)

Cylinder 1 Misfire Detected

Open or short in engine wire

Connector connection

Vacuum hose connection

Ignition system

Injector

Fuel pressure

Intake air flow meter

E.F.I. engine coolant temp. sensor

Compression pressure

Valve clearance

Valve timing

PCV hose connection

ECM

*2

P0302

(

05-71

)

Cylinder 2 Misfire Detected

Open or short in engine wire

Connector connection

Vacuum hose connection

Ignition system

Injector

Fuel pressure

Intake air flow meter

E.F.I. engine coolant temp. sensor

Compression pressure

Valve clearance

Valve timing

PCV hose connection

ECM

*2

P0303

(

05-71

)

Cylinder 3 Misfire Detected

Open or short in engine wire

Connector connection

Vacuum hose connection

Ignition system

Injector

Fuel pressure

Intake air flow meter

E.F.I. engine coolant temp. sensor

Compression pressure

Valve clearance

Valve timing

PCV hose connection

ECM

*2

P0304

(

05-71

)

Cylinder 4 Misfire Detected

Open or short in engine wire

Connector connection

Vacuum hose connection

Ignition system

Injector

Fuel pressure

Intake air flow meter

E.F.I. engine coolant temp. sensor

Compression pressure

Valve clearance

Valve timing

PCV hose connection

ECM

*2

-

DIAGNOSTICS

SFI SYSTEM (1MZ-FE)

05-21

174

2002 LEXUS ES300 REPAIR MANUAL (RM911U)

P0305

(

05-71

)

Cylinder 5 Misfire Detected

Open or short in engine wire

Connector connection

Vacuum hose connection

Ignition system

Injector

Fuel pressure

Intake air flow meter

E.F.I. engine coolant temp. sensor

Compression pressure

Valve clearance

Valve timing

PCV hose connection

ECM

*2

P0306

(

05-71

)

Cylinder 6 Misfire Detected

Open or short in engine wire

Connector connection

Vacuum hose connection

Ignition system

Injector

Fuel pressure

Intake air flow meter

E.F.I. engine coolant temp. sensor

Compression pressure

Valve clearance

Valve timing

PCV hose connection

ECM

*2

P0325

(

05-77

)

Knock Sensor 1 Circuit Malfunc-
tion (Bank 1)

Open or short in knock sensor 1 circuit

Knock control sensor 1 (looseness)

ECM

P0330

(

05-77

)

Knock Sensor 2 Circuit Malfunc-
tion (Bank 2)

Open or short in knock sensor 2 circuit

Knock control sensor 2 (looseness)

ECM

P0335

(

05-80

)

Crankshaft Position Sensor ”A”
Circuit

Malfunction

Open or short in crankshaft position sensor circuit

Crank position sensor

Crankshaft timing pulley

ECM

P0340

(

05-83

)

Camshaft Position Sensor Circuit
Malfunction

Open or short in camshaft position sensor circuit

Crank position sensor No.1

Camshaft timing gear

ECM

P0420

(

05-85

)

Catalyst System Efficiency Be-
low Threshold (Bank 1)

Gas leakage on exhaust system

A/F sensor (bank 1, sensor 1)

Oxygen sensor (bank 1, sensor 2)

Exhaust manifold

P0430

(

05-85

)

Catalyst System Efficiency Be-

low Threshold (Bank 2)

Gas leakage on exhaust system

A/F sensor (bank 2, sensor 1)

Oxygen sensor (bank 2, sensor 2)

Exhaust manifold

05-22

-

DIAGNOSTICS

SFI SYSTEM (1MZ-FE)

175

2002 LEXUS ES300 REPAIR MANUAL (RM911U)

P0440

(

05-88

)

Evaporative Emission Control
System Malfunction

Hose or tube cracked, holed, damaged or insufficient seal

Fuel tank cap incorrectly installed

Fuel tank cap cracked or damaged

Vacuum hose cracked, holed, blocked, damaged or discon-

nected

Fuel tank cracked, holed or damaged

Charcoal canister cracked, holed or damaged

Open or short in vapor pressure sensor circuit

VSV for CCV

VSV for EVAP

VSV for pressure switching valve

Vapor pressure sensor

Fuel tank over fill check valve cracked or damaged

ECM

P0441

(

05-97

)

Evaporative Emission Control
System Incorrect Purge Flow

Vacuum hose cracked, holed blocked, damaged or discon-

nected ((1), (2), (3), (4), (5), (6), (7), (8), (9), (10) and (11) in

Fig. 1)

Fuel tank cap incorrectly installed

Open or short in vapor pressure sensor circuit

Vapor pressure sensor

Open or short in VSV circuit for EVAP

VSV for EVAP

Open or short in VSV circuit for CCV

VSV for CCV

Open or short in VSV circuit for pressure switching valve

VSV for pressure switching valve

Fuel tank cracked, holed or damaged

Charcoal canister cracked, holed or damaged

Fuel tank over fill check valve cracked or damaged

ECM

P0442

(

05-88

)

Evaporative Emission Control
System Malfunction

Same as DTC No. P0440

P0446

(

05-97

)

Evaporative Emission Control
System Malfunction

Same as DTC No. P0441

P0450

(

05-1 12

)

Evaporative Emission Control
System Pressure Sensor Mal-
function

Open or short in vapor pressure sensor circuit

Vapor pressure sensor

ECM

P0451

(

05-1 12

)

Evaporative Emission Control
System Pressure Sensor Range/
Performance

Open or short in vapor pressure sensor circuit

Vapor pressure sensor

ECM

P0500

(

05-1 14

)

Vehicle Speed Sensor Malfunc-
tion

Combination meter

Vehicle speed sensor

Open or short in speed sensor circuit

ECM

Skid control computer assy

P0505

(

05-1 17

)

Idle Control System Malfunction

Throttle body assy

Air induction system

PCV hose connection

ECM

P0605

*3

Internal Control Module Read
Only Memory Error

ECM



P0710

(

05-410

)

Transmission Fluid Temp. Sen-
sor Malfunction

Electronic controlled automatic transmission (ECT)

P0711

(

05-410

)

Transmission Fluid Temp. Sen-
sor Range/Performance Problem

Electronic controlled automatic transmission (ECT)

P0750

(

05-413

)

Shift Solenoid A Malfunction

Electronic controlled automatic transmission (ECT)