Lexus ES300 (2002 year). Service manual — part 377

05-12

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DIAGNOSTICS

SFI SYSTEM (1MZ-FE)

165

2002 LEXUS ES300 REPAIR MANUAL (RM911U)

LONG FT #2

Long term fuel trim of bank 2/

Min.: -100 %, Max.: 100 %

0

±

20 %

TOTAL FT #2

Total fuel trim of bank 2/

Min.: 0.5, Max.: 1.496

Idling: 0.5 - 1.4

AF FT B1 S1

Short term fuel trim associated

with the bank 1, sensor 1/

Min.: 0, Max.: 1.999

Lean: 0 < 1
St i hi

t i Ai F

l R ti

1

AF FT B2 S1

Short term fuel trim associated

with the bank2, sensor 1/

Min.: 0, Max.: 1.999

Stoichiometric Air-Fuel Ratio = 1

Rich: 1 < 1.999

CTP SW

Closed throttle position switch/

ON or OFF

Throttle fully closed: ON

Throttle open: OFF

FUEL SYS #1

Fuel system status (Bank1) /
OL or CL or OLDRIVE or
OLFAULT or CLFAULT

OL: Open Loop-has not yet sa-
tisfied conditions to go closed
loop.

CL: Closed Loop-using oxygen
sensor(s) as feed back for fuel
control.

OL DRIVE: Open loop due to

FUEL SYS #2

Fuel system status (Bank2) /

OL or CL or OL DRIVE or

OL FAULT or CL FAULT

Idling after warming up: CL

driving conditions. (power enrich-
ment, deceleration eneanment)

OL FAULT: Open loop due to de-
tected system fault.

CL FAULT: Closed loop, but fault
with at least one oxygen sensor
may be using single oxygen sen-
sor for fuel control.

FC IDL

Idle fuel cut /

ON or OFF

Fuel cut operation: ON

MIL

MIL status /

ON or OFF

MIL ON: ON

STARTER SIG

Starter signal /

ON or OFF

Cranking: ON

A/C SIG

A/C signal /

ON or OFF

A/C ON: ON

PNP SW [NSW]

Neutral position switch signal /

ON or OFF

P or N position: ON

ELECT LOAD SIG

Electrical load signal /

ON or OFF

Defogger switch ON: ON

STOP LIGHT SW

Stop light switch /

ON or OFF

Brake pedal depressed: ON

Brake pedal released: OFF

PS OIL PRESS SW

Power steering signal /

ON or OFF

Steering position is;
center: OFF
Except center:ON

PS SIGNAL

Power steering signal/

ON or OFF

After engine start: OFF

After steer the steering: ON

INTAKE CTL VSV1

VSV status for intake control

(Bank1) /

ON or OFF

VSV operating: ON

INTAKE CTL VSV2

VSV status for intake control

(Bank1) /

ON or OFF

VSV operating: ON

FUEL PUMP / SPD

Fuel pump / speed status /

ON/H or OFF/M,L

Idling: ON

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DIAGNOSTICS

SFI SYSTEM (1MZ-FE)

05-13

166

2002 LEXUS ES300 REPAIR MANUAL (RM911U)

A/C MAG CLUTCH

A/C magnet clutch status /

ON or OFF

A/C magnet clutch ON: ON

EVAP VSV

VSV status for EVAP control /

ON or OFF

VSV operating: ON

VVT CTRL B2

VVT control status (Bank 2) /

ON or OFF

VVT system operation: ON

VVT CTRL B1

VVT control status (Bank 2) /

ON or OFF

VVT system operation: ON

SHIFT

Actual Gear Position/

1st, 2nd, 3rd 4th

Shift Lever Position is;

L: 1st

2: 1st or 2nd

D(O/D OFF): 1st, 2nd or 3rd

D(O/D ON): 1st, 2nd, 3rd or 4th

LOCK UP SOL

Lock Up Solenoid Status/

ON or OFF

Lock Up: ON

Except Lock Up: OFF

OVERDRV CUT SW1

O/D SW Status/

ON or OFF

O/D SW Push: ON

O/D SW Release: OFF

REVERSE

PNP SW Status/

ON or OFF

Shift lever position is;
R: ON
Except R: OFF

The shift lever position and these

values are different, there are fail-

ures of the PNP switch or shift

cable adjustment.

4TH/DRIVE

PNP SW Status/

ON or OFF

Shift lever position is;
D: ON
Except D: OFF

The shift lever position and these

values are different, there are fail-

ures of the PNP switch or shift

cable adjustment.

2ND

PNP SW Status/

ON or OFF

Shift lever position is;
2: ON
Except 2: OFF

The shift lever position and these

values are different, there are fail-

ures of the PNP switch or shift

cable adjustment.

LOW

PNP SW Status/

ON or OFF

Shift lever position is;
L: ON
Except L: OFF

The shift lever position and these

values are different, there are fail-

ures of the PNP switch or shift

cable adjustment.

SOLENOID (SLT)

Shift Solenoid SLT Status/

ON or OFF

IG SW ON: ON

SPD (NC)

Counter Gear Speed

display: 50 r/min

D Range is warmed up,4th;
Same as input shaft speed

IGNITION

Ignition counter/

Min.: 0, Max.: 600

0 - 600

CYL #1, #2, #3, #4, #5, #6

Misfire ratio of the cylinder 1/

Min.: 0 %, Max.: 50 %

0 %

AT FLUID TEMP

ATF Temp. Sensor Value/

min.: -40

C (-40

F)

max.: 225

C (437

F)

80

C (176

F)

(After Stall Test)

If the value is ”-40

C (-40

F)” or

”225

C (437

F)”, ATF temp. sen-

sor circuit is opened or shorted.

MIL ON RUN DIST

This parameter indicates the dis-

tance travelled while MIL/

Min.: 0 km, Max.: 65535 km

When there is no DTC:
0 km/h (0 mph)

THROTTLE POS #2

Throttle position sensor No.2 out-

put voltage/

Min.: 0 V, Max.: 5 V

Throttle fully closed: 2.0 - 2.9 V

Throttle fully open: 4.6 - 5.0 V

ACCEL POS #1

Accelerator pedal position sensor

No.1 output voltage/

Min.: 0 V, Max.: 5 V

Accelerator released:
0.5 - 1.1 V

Accelerator depressed:
3.0 - 4.6 V

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DIAGNOSTICS

SFI SYSTEM (1MZ-FE)

167

2002 LEXUS ES300 REPAIR MANUAL (RM911U)

ACCEL POS #2

Accelerator pedal position sensor

No.2 output voltage/

Min.: 0 V, Max.: 5 V

Accelerator released:
2.0 - 2.9 V

Accelerator depressed:
4.6 - 5.0 V

THROTTLE TARGT

Target position of throttle valve/

Min.: 0 V, Max.: 5 V

Idling: 0.4 - 1.0 V

THROTTLE OPN DUTY

Throttle motor opening duty ratio/

Min.: 0 %, Max.: 100 %

Throttle fully closed: 0 %

When accelerator pedal is de-
pressed, duty ratio is increased.

THROTTLE CLS DUTY

Throttle motor closed duty ratio/

Min.: 0 %, Max.: 100 %

Throttle fully closed: 0 %

When accelerator pedal is quick
released, duty ratio is increased.

THROTTLE MOT

Whether or not throttle motor con-

trol is permitted/

ON or OFF

Idling: ON

+BM

Whether or not electric throttle

control system power is inputted/

ON or OFF

Idling: ON

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DIAGNOSTICS

SFI SYSTEM (1MZ-FE)

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2002 LEXUS ES300 REPAIR MANUAL (RM911U)

7.

ACTIVE TEST

HINT:
Performing the ACTIVE TEST using the OBD II scan tool or Hand-held tester allows the relay, VSV, actuator
and so on to operate without parts removal. Performing the ACTIVE TEST as a first step of troubleshooting
is one of the method to shorten the labor time.
It is possible to display the DATA LIST during the ACTIVE TEST.
(a)

Warm up the engine.

(b)

Turn the ignition switch OFF.

(c)

Connect the OBD II scan tool or Hand-held tester to the DLC3.

(d)

Turn the ignition switch ON.

(e)

According to the display on tester, perform the ”ACTIVE TEST”.

Item

Test Details

Diagnostic Note

INJ

VOL

[Test Details]
Control the injection volume
Min.: -12.5 %, Max.: 24.8 %
[Vehicle Condition]
Engine speed: 3000rpm or less.

IAC DUTY RATIO

[Test Details]
Control the IAC duty ratio
Min.: 0 %, Max.: 90 %
[Vehicle Condition]
Vehicle speed: 0 km/h.
Engine speed: Idling
Battery voltage: 8.5V or more.

When Engine

speed does not

change, IAC system has some
failure.

INTAKE CTL VSV1

[Test Details]
Activate the VSV for intake control.
ON or OFF

CAN CTRL VSV

[Test Details]
Activate the VSV for canister control.
ON or OFF

TANK BYPASS VSV

[Test Details]
Activate the VSV for tank bypass.
ON or OFF

EVAP VSV (ALONE)

[Test Details]
Activate the VSV for EVAP control.
ON or OFF

A/C MAG CLUTCH

[Test Details]
Control the A/C magnet clutch.
ON or OFF

FUEL PUMP / SPD

[Test Details]
Control the fuel pump speed.
ON or OFF

VVT CTRL B1

[Test Details]
Activate the VVT system (Bank 1).
ON or OFF

ON: Rough idle or engine stall.

OFF: Normal engine speed.

TC/TE1

[Test Details]
Connect the TC and TE1
ON or OFF

FC IDL PROHBT

[Test Details]
Control the EGR system.
ON or OFF