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
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Check of the brake system via the socket of the module of management
The components of the brake system interfaced to the 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
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Contacts
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Color of wires
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Check conditions
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Tension, In
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SRLR (A37-1) <—> GND (A38-6, 31, A39-8, 17)
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B-O <—> W-B
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Ignition is included, To/L ABS does not burn
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10 ÷ 14
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AST (A37-6) <—> GND (A38-6, 31, A39-8, 17)
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B-Y <—> W-B
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Ignition is included, To/L ABS does not burn
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10 ÷ 14
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SRLH (A37 - 7) <—> GND (A38-6, 31, A39-8, 17)
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Y-B <—> W-B
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Ignition is included, To/L ABS does not burn
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10 ÷ 14
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SFRR (A37 - 8) <—> GND (A38-6, 31, A39-8, 17)
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BR-W <—> W-B
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Ignition is included, To/L ABS does not burn
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10 ÷ 14
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SMV2 (A37-15) <—> GND (A38-6, 31, A39-8, 17)
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R <—> W-B
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Ignition is included, To/L ABS does not burn
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10 ÷ 14
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SFRH (A37-16) <—> GND (A38-6, 31, A39-8, 17)
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V-W <—> W-B
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Ignition is included, To/L ABS does not burn
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10 ÷ 14
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RLO (A37-18) <—> GND (A38-6, 31, 39-8, 17)
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P-L <—> W-B
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The movement with a speed of 20 km/h
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Generation of impulses
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SMV1 (A37-22) <—> GND (A38-6, 31.A39-8, 17)
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W-L <—> W-B
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Ignition is included, To/L ABS does not burn
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10 ÷ 14
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SMC1 (A38-2) <—> GND (A38-6, 31, A39-8, 17)
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L-Y <—> W-B
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Ignition is included, To/L ABS does not burn
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10 ÷ 14
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SMC2 (A38-3) <—> GND (A38-6, 31, A39-8, 17)
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G-B <—> W-B
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Ignition is included, To/L ABS does not burn
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10 ÷ 14
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SRC1 (A38-4) <—> GND (A38-6, 31, A39-8, 17)
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R-Y <—> W-B
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Ignition is included, To/L ABS does not burn
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10 ÷ 14
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SRC2 (A38-5) <—> GND (A38-6, 31, A39-8, 17)
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GR-R <—> W-B
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Ignition is included, To/L ABS does not burn
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10 ÷ 14
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SFLR (A38-7) <—> GND (A38-6, 31, A39-8, 17)
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R-B <—> W-B
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Ignition is included, To/L ABS does not burn
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10 ÷ 14
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SRRH (A38-8) <—> GND (A38-6, 31, A39-8, 17)
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BR-Y <—> W-B
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Ignition is included, To/L ABS does not burn
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10 ÷ 14
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SRRR (A38-9) <—> GND (A38-6, 31, A39-8, 17)
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GR-L <—> W-B
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Ignition is included, To/L ABS does not burn
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10 ÷ 14
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VCM (A38-10) <—> GND (A38-6, 31, A39-8, 17)
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B <—> W-B
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Ignition is included
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4.5 ÷ 5.5
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FR+ (A38-14) <—> FR-(A38-13)
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V <—> P
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Ignition is included, slowly rotate a forward right wheel
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Generation of alternating current
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FL+ (A38-16) <—> FL-(A38-15)
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LG <—> L
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Ignition is included, slowly rotate a forward left wheel
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Generation of alternating current
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SR (A38-19) <—> R+ (A38-1)
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Y-G <—> GR
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Ignition is included, To/L ABS does not burn
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10 ÷ 14
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SFLH (A38-21) <—> GND (A38-6, 31, A39-8, 17)
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G <—> W-B
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Ignition is included, To/L ABS does not burn
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10 ÷ 14
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PMC (A38-22) <—> E2 (A38-23)
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W <—> R
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Ignition is included, To/L ABS does not burn
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0.3 ÷ 0.7
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E2 (A38-23) <—> GND (A38-6, 31, A39-8, 17)
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R <—> W-B
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Ignition is switched off
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Conductivity
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FSS (A38-24) <—> GND (A38-6, 31, A39-8, 17)
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The screen <—> W-B
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Ignition is switched off
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Conductivity
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MT (A38-28) <—> GND (A38-6, 31, A39-8, 17)
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LG-B <—> W-B
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Ignition is included (the relay э / the motor is switched off)
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Lower than 1.5
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MR (A38-29) <—> GND (A38-6, 31, A39-8, 17)
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B-W <—> W-B
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Ignition is included, э / the ABS motor is stopped
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10 ÷ 14
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VGS (A39-1) <—> GGND (A39-10)
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R <—> B
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Ignition is included
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4.5 ÷ 5.5
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GL1 (A39-2) <—> GGND (A39-10)
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W <—> B
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Ignition is included, the car is on the horizontal platform
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2 ÷ 3
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Tc (A39-3) <—> GND (A38-6, 31, A39-8, 17)
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P-B <—> W-B
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Ignition is included
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10 ÷ 14
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Ts (A39-4) <—> GND (A38-6, 31, A39-8, 17)
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W-L <—> W-B
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Ignition is included
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10 ÷ 14
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IG1 (A39-6) <—> GND (A38-6, 31, A39-8, 17)
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B-R <—> W-B
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Ignition is included
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10 ÷ 14
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NEO (A39-7) <—> GND (A38-6, 31, A39-8, 17)
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L-O <—> W-B
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Idling
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Generation of impulses
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GL2 (A39-9) <—> GGND (A39-10)
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G <—> B
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Ignition is included, the car is on the flat platform
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2.0 ÷ 3.0
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GGND (A39-10) <—> GND (A38-6, 31, A39-8, 17)
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B <—> W-B
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Ignition is switched off
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Conductivity
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RR+ (A39-11) <—> RR-(A39-12)
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GR-R <—> L
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Ignition is included, slowly rotate a back right wheel
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Generation of alternating current
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ENG+ (A39-14) <—> ENG-(A39-22)
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R-Y <—> BR-W
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Ignition is included, idling
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Generation of impulses
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GSS (A39-18) <—> GND (A38-6, 31, A39-8, 17)
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The screen <—> W-B
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Ignition is switched off
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Conductivity
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RL+ (A39-19) <—> RL-(A39-20)
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L-Y <—> L-W
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Ignition is included, slowly rotate a back left wheel
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Generation of alternating current
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PKB (A39-15) <—> GND (A38-6, 31, A39-8, 17)
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R-L <—> W-B
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Ignition is included, the parking brake is cocked
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Lower than 2.0
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Ignition is included, the parking brake is released
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10 ÷ 14
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TRC+ (A39-24) <—> TRC-(A39-16)
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GR <—> P-B
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Ignition is included, idling
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Generation of impulses
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BRL (A40-1) <—> GND (A38-6, 31, A39-8, 17)
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G <—> W-B
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Ignition is included, liquid level in GTTs is higher than a tag of "MIN", the parking brake is released
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10 ÷ 14
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RRO (A40-3) <—> GND(A38-6, 31, A39-8, 17)
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V <—> W-B
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The movement with a speed of 20 km/h
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Generation of impulses
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VSCW (A 40-4) <—> GND (A 38-6, 31, A 39-8, 17)
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W-G <—> W-B
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Ignition is included, burns To/L VSC
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Lower than 2.0
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Ignition is included, To/L VSC does not burn
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10 ÷ 14
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WA (A40-5) <—> GND (A38–6, 31, A39-8, 17)
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B-Y <—> W-B
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Ignition is included, burns To/L ABS
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Lower than 2.0
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Ignition is included, To/L ABS does not burn
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10 ÷ 14
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IND (A40-6) <—> GND (A38-6, 31, A39-8, 17)
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W-L <—> W-B
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Ignition is included, the pro-slipping existence indicator burns
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Lower than 2.0
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Ignition is included, the indicator of existence of pro-slipping does not burn
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10 ÷ 14
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Contacts
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Color of wires
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Check conditions
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Tension, In
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STP (A40-7) <—> GND (A38-6, 31, A39-8, 17)
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G - <<—> W-B
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Stoplights do not burn
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Lower than 1.5
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Stoplights burn
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8 ÷ 14
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VYS (A40-9) <—> GYAW (A40-27)
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R-L <—> R-W
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Ignition is included
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4.5 ÷ 5.5
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LBL (A40-11) <—> GND (A38-6, 31, A39-8, 17)
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R-W <—> W-B
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Ignition is included, liquid level in GTTs is higher than a tag of "MIN"
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About 4 ÷ 8
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SS1 + (A40-14) <—> SS1-(A40-23)
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LG-B <—> LG
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Idling, slowly turn a steering wheel
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Generation of impulses
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R (A40-15) <—> GND (A38-6, 31, A39-8, 17)
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R-B <—> W-B
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Ignition is included, the AT selector lever in situation "R"
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8 ÷ 14
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Ignition is included, the AT selector lever in the situation other than "R"
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Lower than 1.5
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SP1 (A40-16) <—> GND (A38-6, 31, A39-8, 17)
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R-B <—> W-B
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The movement with a speed of 20 km/h
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Generation of impulses
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YSS (A40-18) <—> GND (A38-6, 31, A39-8, 17)
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The screen <—> W-B
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Ignition is switched off
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Conductivity
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YD (A40-19) <—> GND (A38-6, 31, A39-8, 17)
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W-R <—> W-B
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Ignition is included, To/L VSC does not burn
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4.5 ÷ 5.5
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BZ (A40-20) <—> GND (A38-6, 31, A39-8, 17)
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G-O <—> W-B
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Ignition is included, VSC buzzer works
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Lower than 1.0 <—> 10 ÷ 14
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Ignition is included, the buzzer of VSC does not sound
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10 ÷ 14
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D (A40-22) <—> GND (A38-6, 31, A39-8, 17)
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GR <—> W-B
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Ignition is included, the AT selector lever in situation "D"
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8 ÷ 14
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Ignition is included, the AT selector lever in situation, other than "D"
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Lower than 1.5
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P (A40-24) <—> GND (A38-6, 31, A39-8, 17)
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G-W <—> W-B
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Ignition is included, the AT selector lever in situation "P"
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8 ÷ 14
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Ignition is included, the AT selector lever in the situation other than "P"
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Lower than 1.5
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D/G (A40-25) <—> GND (A38-6, 31, A39-8, 17)
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W <—> W-B
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Ignition is included
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10 ÷ 14
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GYAW (A40-27) <—> GND (A38-6, 31, A39-8, 17)
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R-W <—> W-B
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Ignition is switched off
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Conductivity
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YAW (A40-28) <—> GYAW (A40-27)
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B <—> R-W
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Ignition is included, the car in stationary conditions
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2 ÷ 3
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