Lexus ES300 (1997 year). Manual — part 310

DI–16

–

DIAGNOSTICS

ENGINE

168

1997 LEXUS ES300 (RM511U)

DTC No.

(See Page)

Detection Item

Trouble Area

MIL*

Memory

P0402

(

DI–81

)

Exhaust Gas Recirculation

Flow Excessive Detected

EGR valve stuck open

VSV for EGR open malfunction

Short in VSV circuit for EGR

Open or short in EGR valve position sensor circuit

EGR valve position sensor

ECM

P0420

(

DI–84

)

Catalyst System Efficiency

Below Threshold

Three–way catalytic converter

Open or short in heated oxygen sensor circuit

Heated oxygen sensor

*2

P0440

(

DI–87

)

Evaporative Emission Control

System Malfunction

Vapor pressure sensor

Fuel tank cap incorrectly installed

Fuel tank cap cracked or damaged

Vacuum hose cracked, holed, blocked, damaged or

disconnected

Hose or tube cracked, holed, damaged or insufficient seal

Fuel tank cracked, holed or damaged

Charcoal canister cracked, holed or damaged

P0441

(

DI–93

)

Evaporative Emission Control

System Incorrect Purge Flow

Open or short in VSV circuit for EVAP

VSV for EVAP

Open or short in vapor pressure sensor circuit

Vapor pressure sensor

Open or short in VSV circuit for vapor pressure sensor

VSV for vapor pressure sensor

Vacuum hose cracked, holed, blocked, damaged or

disconnected

Charcoal canister cracked, holed or damaged

P0446

(

DI–93

)

Evaporative Emission Control

System Vent Control

Malfunction

Open or short in VSV circuit for EVAP

VSV for EVAP

Open or short in vapor pressure sensor circuit

Vapor pressure sensor

Open or short in VSV circuit for vapor pressure sensor

VSV for vapor pressure sensor

Vacuum hose cracked, holed, blocked, damaged or

disconnected

Charcoal canister cracked, holed or damaged

P0450

(

DI–104

)

Evaporative Emission Control

System Pressure Sensor

Malfunction

Open or short in vapor pressure sensor circuit

Vapor pressure sensor

ECM

P0500

(

DI–106

)

Vehicle Speed Sensor

Malfunction

Open or short in speed signal circuit

Open or short in speed sensor circuit for ABS

Combination meter

ECM

ABS ECU

P0505

(

DI–109

)

Idle Control System

Malfunction

IAC valve is stuck or closed

Open or short in IAC valve circuit

Open or short in A/C signal circuit

Air intake (hose loose)

*1

:

MIL lights up

*2

: MIL lights up on U.S.A. and Canadian specification vehicles

–

DIAGNOSTICS

ENGINE

DI–17

169

1997 LEXUS ES300 (RM511U)

DTC No.

(See Page)

Detection Item

Trouble Area

MIL*

Memory

P1300

(

DI–112

)

Igniter Circuit Malfunction

Open or short in IGF or IGT circuit from igniter to ECM

Igniter

ECM

P1335

(

DI–117

)

Crankshaft Position Sensor

Circuit Malfunction

(during engine running)

Open or short in crankshaft position sensor circuit

Crankshaft position sensor

ECM

–

P1410

(

DI–118

)

EGR Valve Position Sensor

Circuit Malfunction

Open or short in EGR valve position sensor circuit

EGR valve position sensor

ECM

P1411

(

DI–122

)

EGR Valve Position Sensor

Circuit Range/Performance

Problem

EGR valve position sensor

P1520

(

DI–123

)

Stop Light Switch Signal

Malfunction

Short in stop light switch signal circuit

Stop light switch

ECM

P1600

(

DI–126

)

ECM BATT Malfunction

Open in back up power source circuit

ECM

P1780

(

DI–128

)

Park/Neutral Position Switch

Malfunction

Short in park/neutral position switch circuit

Park/neutral position switch

ECM

*: –

MIL does not light up

MIL lights up

DI098–01

S06290

Engine Coolant
Temp. Sensor

Heated Oxygen Sensor
(Bank 1 Sensor 2)

VSV for EVAP

VSV for ACIS

Vapor Pressure
Sensor

Crankshaft Position
Sensor

Camshaft Position
Sensor

Heated Oxygen Sensor
(Bank 1 Sensor 1)

Heated Oxygen Sensor
(Bank 2 Sensor 1)

Park/Neutral Position Switch

Knock Sensor 1

Knock Sensor 2

EGR Gas Temp. Sensor

Injector

DLC1

ECM

EGR Valve
Position Sensor

VSV for EGR

DLC3

VSV for Vapor
Pressure Sensor

IAC Valve

Mass Air Flow Meter

Igniter

DI–18

–

DIAGNOSTICS

ENGINE

170

1997 LEXUS ES300 (RM511U)

PARTS LOCATION

DI099–01

FI6810

E10

E9

E8

E7

3433 3231

30 2928 27

17

18

19

20

21

22

23

24

25

26

11

12

13

14

15

16

1

2

3

4

5

6

7

8

9

10

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

ECM Terminals

–

DIAGNOSTICS

ENGINE

DI–19

171

1997 LEXUS ES300 (RM511U)

TERMINALS OF ECM

Symbols (Terminals No.)

Wiring Color

Condition

STD Voltage (V)

BATT (E7 – 14)

– E1 (E8 – 16)

B–Y

↔

BR

Always

9

∼

14

+B (E7 – 23)

– E1 (E8 – 16)

B–Y

↔

BR

IG switch ON

9

∼

14

VC (E9 – 1) – E2 (E9 – 22)

Y

↔

BR

IG switch ON

4.5

∼

5.5

VTA1 (E9

7)

E2 (E9

22)

L

BR

IG switch ON

Throttle valve fully closed

0.3

∼

1.0

VTA1 (E9 – 7) – E2 (E9 – 22)

L

↔

BR

IG switch ON

Throttle valve fully open

3.2

∼

4.9

VG (E9 – 8) – E2G (E8 – 7)

P

↔

R–B

Idling , A/C switch OFF

1.1

∼

1.5

THA (E9 – 21) – E2 (E9 – 22)

L–Y

↔

BR

Idling, Intake air temp. 20

°

C (68

°

F)

0.5

∼

3.4

THW (E9 –20) – E2 (E9 – 22)

G–B

↔

BR

Idling, Engine coolant temp. 80

°C (176°F)

0.2

∼

1.0

STA (E10 – 13) – E1 (E8 – 16)

GR

↔

BR

Cranking

6.0 or more

#10 (E10

10)

IG switch ON

9

∼

14

#10 (E10 – 10)

– E01 (E10 – 34)

L

↔

BR

Idling

Pulse generation

(See page

DI–57

)

#20 (E10

9)

IG switch ON

9

∼

14

#20 (E10 – 9)

– E01 (E10 – 34)

R

↔

BR

Idling

Pulse generation

(See page

DI–57

)

#30 (E10

8)

IG switch ON

9

∼

14

#30 (E10 – 8)

– E01 (E10 – 34)

Y

↔

BR

Idling

Pulse generation

(See page

DI–57

)

#40 (E10

7)

IG switch ON

9

∼

14

#40 (E10 – 7)

– E01 (E10 – 34)

W

↔

BR

Idling

Pulse generation

(See page

DI–57

)

#50 (E10

6)

IG switch ON

9

∼

14

#50 (E10 – 6)

– E01 (E10 – 34)

R–L

↔

BR

Idling

Pulse generation

(See page

DI–57

)

#60 (E10

5)

IG switch ON

9

∼

14

#60 (E10 – 5)

– E01 (E10 – 34)

G

↔

BR

Idling

Pulse generation

(See page

DI–57

)

IGT1 (E10 – 24)

– E1 (E8 – 16)

GR

↔

BR

Idling

Pulse generation

(See page

DI–112

)

IGT2 (E10 – 16)

– E1 (E8 – 16)

BR–Y

↔

BR

Idling

Pulse generation

(See page

DI–112

)

IGT3 (E10 – 15)

– E1 (E8 – 16)

LG–B

↔

BR

Idling

Pulse generation

(See page

DI–112

)