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

)