Lexus ES300 (2002 year). Manual - part 294

0529F-03

F41247

Combination Meter

 ABS Warning Light

 VSC Warning Light

 Brake Warning Light

 TRAC OFF Indicator Light

 SLIP Indicator Light

Skid Control ECU

Steering Sensor

Stop Lamp Switch

Front Speed Sensor

ABS R/B

Rear Speed Sensor

ABS & Traction Actuator

Skid Control Buzzer

Yaw Rate Sensor
(Include Deceleration Sensor)

TRAC OFF Switch

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DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

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2002 LEXUS ES300 REPAIR MANUAL   (RM911U)

LOCATION

0529G-03

F40901

S8

S7

S6

S5

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DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

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2002 LEXUS ES300 REPAIR MANUAL   (RM911U)

TERMINALS OF ECU

Symbols (Terminals No.)

Wiring Color

Condition

STD Voltage (V)

SRLR (S5 - 1) - GND (S5 - 15,

22, S8 - 2, 3)

LG-B 

↔

 W-B

IG switch ON, ABS warning light OFF

10 - 14

SM1- (S5 - 2) - GND (S5 - 15,

22, S8 - 2, 3)

Y-G 

↔

 W-B

IG switch OFF

Below 1.0

SM1+ (S5 - 3) - GND (S5 - 15,

22, S8 - 2, 3)

L-R 

↔

 W-B

IG switch ON, ABS warning light OFF

Below 1.0

SM2- (S5 - 4) - GND (S5 - 15,

22, S8 - 2, 3)

B-L 

↔

 W-B

IG switch OFF

Below 1.0

SM2+ (S5 - 5) - GND (S5 - 15,

22, S8 - 2, 3)

B-W 

↔

 W-B

IG switch ON, ABS warning light OFF

Below 1.0

AST (S5 - 6) - GND (S5 - 15,

22, S8 - 2, 3)

R 

↔

 W-B

IG switch ON, ABS warning light OFF

10 - 14

SRLH (S5 - 7) - GND (S5 - 15,

22, S8 - 2, 3)

G-Y 

↔

 W-B

IG switch ON, ABS warning light OFF

10 - 14

SFRR (S5 - 8) - GND (S5 -

15, 22, S8 - 2, 3)

W-R 

↔

 W-B

IG switch ON, ABS warning light OFF

10 - 14

PMC (S5 - 10) - E2 (S5 - 19)

B 

↔

 W

IG switch ON, stop light switch OFF

0.3 - 0.9

E3 (S5 - 12) - GND (S5 - 15,

22, S8 - 2, 3)

R 

↔

 W-B

IG switch OFF

Continuity

FSS (S5 - 13) - GND (S5 - 15,

22, S8 - 2, 3)

Shielded 

↔

 W-B

IG switch OFF

Continuity

MT (S5 - 14) - GND (S5 - 15,

22, S8 - 2, 3)

R-W 

↔

 W-B

IG switch ON (Motor relay is OFF)

Below 1.5

SFRH (S5 - 16) - GND (S5 -

15, 22, S8 - 2, 3)

R-B 

↔

 W-B

IG switch ON, ABS warning light OFF

10 - 14

PMC2 (S5 - 18) - E3 (S5 - 12)

W 

↔

 R

IG switch ON, stop light switch OFF

0.3 - 0.9

E2 (S5 - 19) - GND (S5 - 15,

22, S8 - 2, 3)

W 

↔

 W-B

IG switch OFF

Continuity

VCM (S5 - 20) - GND (S5 -

15, 22, S8 - 2, 3)

R 

↔

 W-B

IG switch ON

4.5 - 5.5

VCM2 (S5 - 21) - GND (S5 -

15, 22, S8 - 2, 3)

B 

↔

 W-B

IG switch ON

4.5 - 5.5

VYS (S6 - 1) - GND (S5 - 15,

22, S8 - 2, 3)

R 

↔

 W-B

IG switch ON

4.5 - 5.5

YSS (S6 - 3) - GND (S5 - 15,

22, S8 - 2, 3)

Shielded 

↔

 W-B

IG switch OFF

Continuity

TRIG (S6 - 6) - GND (S5 - 15,

22, S8 - 2, 3)

Y-R 

↔

 W-B

IG switch ON

Above 3.5

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DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

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2002 LEXUS ES300 REPAIR MANUAL   (RM911U)

CSW (S6 - 7) - GND (S5 - 15,

22, S8 - 2, 3)

LG 

↔

 W-B

IG switch ON, TRC OFF switch OFF

10 - 14

P (S6 - 9) - GND (S5 - 15, 22,

G W

W B

IG switch ON, shift lever is in P range

8 - 14

P (S6   9)   GND (S5   15, 22,

S8 - 2, 3)

G-W 

↔

 W-B

IG switch ON, shift lever is in other than P range

Below 1.5

YAW2 (S6 - 10) - GND (S5 -

15, 22, S8 - 2, 3)

W 

↔

 W-B

IG switch ON, yawrate sensor is stationary

2 - 3

GSS (S6 - 11) - GND (S5 - 15,

22, S8 - 2, 3)

Shielded 

↔

 W-B

IG switch OFF

Continuity

YD (S6 - 16) - GND (S5 - 15,

22, S8 - 2, 3)

G 

↔

 W-B

IG switch ON, VSC warning light OFF

Above 4.5

SS1+ (S6 - 18) - SS1- (S6 -

27)

P 

↔

 V

Engine idling, slowly tun steering wheel

Pulse generation

GYAW (S6 - 20) - GND (S5 -

15, 22, S8 - 2, 3)

B 

↔

 W-B

IG switch OFF

Continuity

GL1 (S6 - 21) - GND (S5 - 15,

22, S8 - 2, 3)

Y 

↔

 W-B

IG switch ON, vehicle is stopped

0.5 - 4.5

GL2 (S6 - 22) - GND (S5 - 15,

22, S8 - 2, 3)

L 

↔

 W-B

IG switch ON, vehicle is stopped

0.5 - 4.5

NEO (S6 - 26) - GND (S5 -

15, 22, S8 - 2, 3)

BR-W 

↔

 W-B

Engine idling

Pulse generation

D/G (S6 - 28) - GND (S5 - 15,

22, S8 - 2, 3)

W 

↔

 W-B

IG switch ON

10 - 14

WA (S7 - 1) - GND (S5 - 15,

R B

W B

IG switch ON, ABS warning light ON

4 - 8

WA (S7   1)   GND (S5   15,

22, S8 - 2, 3)

R-B 

↔

 W-B

IG switch ON, ABS warning light OFF

Below 2.0

SP1 (S7 - 2) - GND (S5 - 15,

22, S8 - 2, 3)

L-O 

↔

 W-B

Vehicle drives at about 20 km/h (12 mph)

Pulse generation

STP (S7 - 3) - GND (S5 - 15,

G W

W B

Stop light switch OFF

Below 1.5

STP (S7   3)   GND (S5   15,

22, S8 - 2, 3)

G-W 

↔

 W-B

Stop light switch ON

8 - 14

WT (S7 - 4) - GND (S5 - 15,

L

W B

IG switch ON, TRAC OFF indicator light ON

Below 2.0

WT (S7   4)   GND (S5   15,

22, S8 - 2, 3)

L 

↔

 W-B

IG switch ON, TRAC OFF indicator light OFF

10 - 14

BZ (S7 - 5) - GND (S5 - 15,

P B

W B

IG switch ON, skid control buzzer is sounded

Below 1.0 

↔

10 - 14

BZ (S7   5)   GND (S5   15,

22, S8 - 2, 3)

P-B 

↔

 W-B

IG switch ON, skid control buzzer is not sounded

10 - 14

IND (S7 - 6) - GND (S5 - 15,

LG

W B

IG switch ON, SLIP indicator light ON

Below 2.0

IND (S7   6)   GND (S5   15,

22, S8 - 2, 3)

LG 

↔

 W-B

IG switch ON, SLIP indicator light OFF

10 - 14

IG1 (S7 - 7) - GND (S5 - 15,

22, S8 - 2, 3)

B-R 

↔

 W-B

IG switch ON

10 - 14

LBLO (S7 - 8) - GND (S5 - 15,

R W

W B

IG switch ON, fluid in master cylinder reservoir above MIN level

and parking brake switch is OFF (Brake warning light is OFF)

Below 2.0

LBLO (S7   8)   GND (S5   15,

22, S8 - 2, 3)

R-W 

↔

 W-B

IG switch ON, fluid in master cylinder reservoir below MIN level

or parking brake switch is ON (Brake warning light ON)

10 - 14

ENG+ (S7 - 9) - ENG- (S7 -

18)

W 

↔

 B

IG switch ON

Pulse generation

Ts (S7 - 10) - GND (S5 - 15,

22, S8 - 2, 3)

LG-B 

↔

 W-B

IG switch ON

10 - 14

TRC+ (S7 - 11) - TRC- (S7 -

20)

G 

↔

 L

IG switch ON

Pulse generation

FRO (S7 - 13) - GND (S5 - 15,

22, S8 - 2, 3)

GR-R 

↔

 W-B

Vehicle drives at about 20 km/h (12 mph)

Pulse generation

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DIAGNOSTICS

ABS WITH EBD & BA & TRAC & VSC SYSTEM

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2002 LEXUS ES300 REPAIR MANUAL   (RM911U)

VSCW (S7 - 14) - GND (S5 -

R L

W B

IG switch ON, VSC warning light ON

Below 2.0

VSCW (S7   14)   GND (S5 

15, 22, S8 - 2, 3)

R-L 

↔

 W-B

IG switch ON, VSC warning light OFF

10 - 14

RR+ (S7 - 16) - RR- (S7 - 15)

P 

↔

 L

IG switch ON, slowly turn right rear wheel

Pulse generation

Tc (S7 - 19) - GND (S5 - 15,

22, S8 - 2, 3)

P-B 

↔

 W-B

IG switch ON

10 - 14

PKB (S7 - 21) - GND (S5 - 15,

P

L

IG switch ON, parking brake switch ON

Below 1.5

PKB (S7   21)   GND (S5   15,

22, S8 - 2, 3)

P 

↔

 L

IG switch ON, parking brake switch OFF

10 - 14

RL+ (S7 - 22) - RL- (S7 - 23)

R 

↔

 G

IG switch ON, slowly turn left rear wheel

Pulse generation

+BO (S7 - 24) - GND (S5 - 15,

22, S8 - 2, 3)

P 

↔

 W-B

Always

10 - 14

R+ (S8 - 1) - GND (S5 - 15,

22, S8 - 2, 3)

GR-R 

↔

 W-B

IG switch ON

10 - 14

SRM1 (S8 - 4) - GND (S5 -

15, 22, S8 - 2, 3)

Y-R 

↔

 W-B

IG switch ON, ABS warning light OFF

10 - 14

SRC2 (S8 - 5) - GND (S5 - 15,

22, S8 - 2, 3)

B-Y 

↔

 W-B

IG switch ON, ABS warning light OFF

10 - 14

SFLH (S8 - 6) - GND (S5 - 15,

22, S8 - 2, 3)

L-B 

↔

 W-B

IG switch ON, ABS warning light OFF

10 - 14

SFLR (S8 - 7) - GND (S5 - 15,

22, S8 - 2, 3)

W-L 

↔

 W-B

IG switch ON, ABS warning light OFF

10 - 14

SRRH (S8 - 8) - GND (S5 -

15, 22, S8 - 2, 3)

W-R 

↔

 W-B

IG switch ON, ABS warning light OFF

10 - 14

SRRR (S8 - 9) - GND (S5 -

15, 22, S8 - 2, 3)

R-G 

↔

 W-B

IG switch ON, ABS warning light OFF

10 -14

SR (S8 - 10) - R+ (S10 - 1)

GR 

↔

 L-B

IG switch ON, ABS warning light OFF

Below 1.0

FR+ (S8 - 13) - FR- (S8 - 12)

W 

↔

 B

IG switch ON, slowly turn right front wheel

Pulse generation

SRM2 (S8 - 21) - GND (S5 -

15, 22, S8 - 2, 3)

Y-B 

↔

 W-B

IG switch ON, ABS warning light OFF

10 - 14

+BI (S8 - 22) - GND (S5 - 15,

22, S8 - 2, 3)

W-R 

↔

 W-B

IG switch ON, ABS warning light OFF

10 - 14

MR (S8 - 23) - GND (S5 - 15,

22, S8 - 2, 3)

W-B 

↔

 W-B

IG switch ON, ABS motor stops

10 - 14

MRF (S8 - 24) - GND (S5 -

15, 22, S8 - 2, 3)

GR-L 

↔

 W-B

IG switch ON

Below 1.0

LBL- (S8 - 25) - GND (S5 -

15, 22, S8 - 2, 3)

R-W 

↔

 W-B

IG switch ON, fluid in master cylinder reservoir above MIN level

4 - 8

FL+ (S8 - 28) - FL- (S8 - 27)

BR 

↔

 Y

IG switch ON, slowly turn left front wheel

Pulse generation

SRC1 (S8 - 31) - GND (S5 -

15, 22, S8 - 2, 3)

B-R 

↔

 W-B

IG switch ON, ABS warning light OFF

10 - 14