LEXUS RX 300

1998 — 2003 of release

Repair and operation of the car



Lexus RX 300
+ Lexus RX-300 cars
+ Governing bodies and methods of operation
+ Settings and routine maintenance of the car
+ Engine
+ Cooling systems of the engine, heating, ventilation and air conditioning
+ A power supply system and production of the fulfilled gases
+ Systems of electric equipment of the engine
+ Automatic transmission and interaxal differential
+ Transmission line
- Brake system
   General information and security measures
   Removal, installation and check of pedals of the brake system
   Check of the brake system via the socket of the module of management
   Removal and installation of the tank and main brake cylinder (MBC)
   Removal, check and installation of the amplifier of brakes
   Replacement of brake shoes
   Removal, dismantling, check, assembly and installation of supports of brake mechanisms
   Dismantling, check and assembly of the parking brake
   Valve check of distribution of brake effort
   Removal and installation of the activator of brakes
   Removal and installation of wheel sensors
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ Schematic diagrams of electric connections


2598ff35



Check of the brake system via the socket of the module of management

The components of the brake system interfaced to the control unit

1 — the pro-slipping existence Indicator
K/L ABS
K/L VSC
2 — the VSC Sensor
3 — Rotors of wheel sensors
4 — the Relay э / the ABS motor
5 — Back wheel sensors
6 — the relay No. 2 Block
7 — the SOL ABS Relay

8 — the delay Sensor
9 — D/V of stoplights
10 — DLC No. 3
11 — VSC Buzzer
12 — the Sensor of an angle of rotation of a steering wheel
13 — Rotors of forward wheel sensors
14 — Forward wheel sensors
15 — the Actuation mechanism of brakes
16 — the VSC Control unit

The table of checks of the brake system by means of measurement of signals on contacts of the socket of the control unit is given below.

Contacts of the socket of the control unit

Contacts

Color of wires

Check conditions

Tension, In

SRLR (A37-1) <—> GND (A38-6, 31, A39-8, 17)

B-O <—> W-B

Ignition is included, To/L ABS does not burn

10 ÷ 14

AST (A37-6) <—> GND (A38-6, 31, A39-8, 17)

B-Y <—> W-B

Ignition is included, To/L ABS does not burn

10 ÷ 14

SRLH (A37 - 7) <—> GND (A38-6, 31, A39-8, 17)

Y-B <—> W-B

Ignition is included, To/L ABS does not burn

10 ÷ 14

SFRR (A37 - 8) <—> GND (A38-6, 31, A39-8, 17)

BR-W <—> W-B

Ignition is included, To/L ABS does not burn

10 ÷ 14

SMV2 (A37-15) <—> GND (A38-6, 31, A39-8, 17)

R <—> W-B

Ignition is included, To/L ABS does not burn

10 ÷ 14

SFRH (A37-16) <—> GND (A38-6, 31, A39-8, 17)

V-W <—> W-B

Ignition is included, To/L ABS does not burn

10 ÷ 14

RLO (A37-18) <—> GND (A38-6, 31, 39-8, 17)

P-L <—> W-B

The movement with a speed of 20 km/h

Generation of impulses

SMV1 (A37-22) <—> GND (A38-6, 31.A39-8, 17)

W-L <—> W-B

Ignition is included, To/L ABS does not burn

10 ÷ 14

SMC1 (A38-2) <—> GND (A38-6, 31, A39-8, 17)

L-Y <—> W-B

Ignition is included, To/L ABS does not burn

10 ÷ 14

SMC2 (A38-3) <—> GND (A38-6, 31, A39-8, 17)

G-B <—> W-B

Ignition is included, To/L ABS does not burn

10 ÷ 14

SRC1 (A38-4) <—> GND (A38-6, 31, A39-8, 17)

R-Y <—> W-B

Ignition is included, To/L ABS does not burn

10 ÷ 14

SRC2 (A38-5) <—> GND (A38-6, 31, A39-8, 17)

GR-R <—> W-B

Ignition is included, To/L ABS does not burn

10 ÷ 14

SFLR (A38-7) <—> GND (A38-6, 31, A39-8, 17)

R-B <—> W-B

Ignition is included, To/L ABS does not burn

10 ÷ 14

SRRH (A38-8) <—> GND (A38-6, 31, A39-8, 17)

BR-Y <—> W-B

Ignition is included, To/L ABS does not burn

10 ÷ 14

SRRR (A38-9) <—> GND (A38-6, 31, A39-8, 17)

GR-L <—> W-B

Ignition is included, To/L ABS does not burn

10 ÷ 14

VCM (A38-10) <—> GND (A38-6, 31, A39-8, 17)

B <—> W-B

Ignition is included

4.5 ÷ 5.5

FR+ (A38-14) <—> FR-(A38-13)

V <—> P

Ignition is included, slowly rotate a forward right wheel

Generation of alternating current

FL+ (A38-16) <—> FL-(A38-15)

LG <—> L

Ignition is included, slowly rotate a forward left wheel

Generation of alternating current

SR (A38-19) <—> R+ (A38-1)

Y-G <—> GR

Ignition is included, To/L ABS does not burn

10 ÷ 14

SFLH (A38-21) <—> GND (A38-6, 31, A39-8, 17)

G <—> W-B

Ignition is included, To/L ABS does not burn

10 ÷ 14

PMC (A38-22) <—> E2 (A38-23)

W <—> R

Ignition is included, To/L ABS does not burn

0.3 ÷ 0.7

E2 (A38-23) <—> GND (A38-6, 31, A39-8, 17)

R <—> W-B

Ignition is switched off

Conductivity

FSS (A38-24) <—> GND (A38-6, 31, A39-8, 17)

The screen <—> W-B

Ignition is switched off

Conductivity

MT (A38-28) <—> GND (A38-6, 31, A39-8, 17)

LG-B <—> W-B

Ignition is included (the relay э / the motor is switched off)

Lower than 1.5

MR (A38-29) <—> GND (A38-6, 31, A39-8, 17)

B-W <—> W-B

Ignition is included, э / the ABS motor is stopped

10 ÷ 14

VGS (A39-1) <—> GGND (A39-10)

R <—> B

Ignition is included

4.5 ÷ 5.5

GL1 (A39-2) <—> GGND (A39-10)

W <—> B

Ignition is included, the car is on the horizontal platform

2 ÷ 3

Tc (A39-3) <—> GND (A38-6, 31, A39-8, 17)

P-B <—> W-B

Ignition is included

10 ÷ 14

Ts (A39-4) <—> GND (A38-6, 31, A39-8, 17)

W-L <—> W-B

Ignition is included

10 ÷ 14

IG1 (A39-6) <—> GND (A38-6, 31, A39-8, 17)

B-R <—> W-B

Ignition is included

10 ÷ 14

NEO (A39-7) <—> GND (A38-6, 31, A39-8, 17)

L-O <—> W-B

Idling

Generation of impulses

GL2 (A39-9) <—> GGND (A39-10)

G <—> B

Ignition is included, the car is on the flat platform

2.0 ÷ 3.0

GGND (A39-10) <—> GND (A38-6, 31, A39-8, 17)

B <—> W-B

Ignition is switched off

Conductivity

RR+ (A39-11) <—> RR-(A39-12)

GR-R <—> L

Ignition is included, slowly rotate a back right wheel

Generation of alternating current

ENG+ (A39-14) <—> ENG-(A39-22)

R-Y <—> BR-W

Ignition is included, idling

Generation of impulses

GSS (A39-18) <—> GND (A38-6, 31, A39-8, 17)

The screen <—> W-B

Ignition is switched off

Conductivity

RL+ (A39-19) <—> RL-(A39-20)

L-Y <—> L-W

Ignition is included, slowly rotate a back left wheel

Generation of alternating current

PKB (A39-15) <—> GND (A38-6, 31, A39-8, 17)

R-L <—> W-B

Ignition is included, the parking brake is cocked

Lower than 2.0

Ignition is included, the parking brake is released

10 ÷ 14

TRC+ (A39-24) <—> TRC-(A39-16)

GR <—> P-B

Ignition is included, idling

Generation of impulses

BRL (A40-1) <—> GND (A38-6, 31, A39-8, 17)

G <—> W-B

Ignition is included, liquid level in GTTs is higher than a tag of "MIN", the parking brake is released

10 ÷ 14

RRO (A40-3) <—> GND(A38-6, 31, A39-8, 17)

V <—> W-B

The movement with a speed of 20 km/h

Generation of impulses

VSCW (A 40-4) <—> GND (A 38-6, 31, A 39-8, 17)

W-G <—> W-B

Ignition is included, burns To/L VSC

Lower than 2.0

Ignition is included, To/L VSC does not burn

10 ÷ 14

WA (A40-5) <—> GND (A38–6, 31, A39-8, 17)

B-Y <—> W-B

Ignition is included, burns To/L ABS

Lower than 2.0

Ignition is included, To/L ABS does not burn

10 ÷ 14

IND (A40-6) <—> GND (A38-6, 31, A39-8, 17)

W-L <—> W-B

Ignition is included, the pro-slipping existence indicator burns

Lower than 2.0

Ignition is included, the indicator of existence of pro-slipping does not burn

10 ÷ 14

Contacts

Color of wires

Check conditions

Tension, In

STP (A40-7) <—> GND (A38-6, 31, A39-8, 17)

G - <<—> W-B

Stoplights do not burn

Lower than 1.5

Stoplights burn

8 ÷ 14

VYS (A40-9) <—> GYAW (A40-27)

R-L <—> R-W

Ignition is included

4.5 ÷ 5.5

LBL (A40-11) <—> GND (A38-6, 31, A39-8, 17)

R-W <—> W-B

Ignition is included, liquid level in GTTs is higher than a tag of "MIN"

About 4 ÷ 8

SS1 + (A40-14) <—> SS1-(A40-23)

LG-B <—> LG

Idling, slowly turn a steering wheel

Generation of impulses

R (A40-15) <—> GND (A38-6, 31, A39-8, 17)

R-B <—> W-B

Ignition is included, the AT selector lever in situation "R"

8 ÷ 14

Ignition is included, the AT selector lever in the situation other than "R"

Lower than 1.5

SP1 (A40-16) <—> GND (A38-6, 31, A39-8, 17)

R-B <—> W-B

The movement with a speed of 20 km/h

Generation of impulses

YSS (A40-18) <—> GND (A38-6, 31, A39-8, 17)

The screen <—> W-B

Ignition is switched off

Conductivity

YD (A40-19) <—> GND (A38-6, 31, A39-8, 17)

W-R <—> W-B

Ignition is included, To/L VSC does not burn

4.5 ÷ 5.5

BZ (A40-20) <—> GND (A38-6, 31, A39-8, 17)

G-O <—> W-B

Ignition is included, VSC buzzer works

Lower than 1.0 <—> 10 ÷ 14

Ignition is included, the buzzer of VSC does not sound

10 ÷ 14

D (A40-22) <—> GND (A38-6, 31, A39-8, 17)

GR <—> W-B

Ignition is included, the AT selector lever in situation "D"

8 ÷ 14

Ignition is included, the AT selector lever in situation, other than "D"

Lower than 1.5

P (A40-24) <—> GND (A38-6, 31, A39-8, 17)

G-W <—> W-B

Ignition is included, the AT selector lever in situation "P"

8 ÷ 14

Ignition is included, the AT selector lever in the situation other than "P"

Lower than 1.5

D/G (A40-25) <—> GND (A38-6, 31, A39-8, 17)

W <—> W-B

Ignition is included

10 ÷ 14

GYAW (A40-27) <—> GND (A38-6, 31, A39-8, 17)

R-W <—> W-B

Ignition is switched off

Conductivity

YAW (A40-28) <—> GYAW (A40-27)

B <—> R-W

Ignition is included, the car in stationary conditions

2 ÷ 3