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Automatic Transmission
Brake Steering

Automatic Transmission
-V -_ Overall A760E 6-speed automatic transmission super ECT with multi-mode automatic transmission ATF filling procedure is slightly changed from GS430 / 300 A760E ATM x 3GR-FE Compact and lightweight 6-speed super ECT. ATF WS is used. [Reference] Basic construction and operation is the same as the GS430 / 300. ATF filling procedure is slightly changed from GS430 / 300 to improve serviceability.

Service Point (Automatic Transmission)
-_ Inspection ATF inspection procedure (No level gauge (dip-stick) and filler tube) Check Items Visually check for ATF leaks of the following areas - Overflow Plug - Drain Plug - Oil seal - Each case joint, etc. New ATF inspection procedure (No level gauge (dip-stick) and filler tube). [Inspection procedure] 1. Visually check the fluid leak. 2. If there is ATF leak from transmission, adjust the ATF level. Note: If there is no ATF leak from transmission, adjustment of the ATF level is no required. Notice: ***Removing of the overflow plug without engine running will flow out fluid. Follow the procedures for fluid refill and fluid level check to prevent accidental loss of fluid. NOTE: If there is no ATF leak from transmission, check of the ATF level is no required

-_ Initial Refill / Replacement Service procedure Refill the ATF Start the engine Activate the test mode Adjust the ATF level Lifts the vehicle Remove the refill plug and the overflow plug Fill up ATF from the refill hole until overflowing from the overflow plug Install the overflow plug Refill ATF* from the refill hole Install the refill plug Lowering the vehicle Refill Plug Overflow Plug [Refill the ATF] 1. Lifts the vehicle (its level). 2. Remove the refill plug and the overflow plug. 3. Fill up ATF from the refill hole until overflowing from the overflow plug. 4. Install and tighten the overflow plug. 5. Refill ATF from the refill hole (The amount of the refilled ATF is different depending on the content of work). HINT: If you cannot add the listed amount of fluid, do the following. 1) Install the refill plug. 2) Allow the engine to idle with the A/C OFF. 3) Move the shift lever through entire gear range to circulate fluid. 4) Wait for 30 seconds with the engine idling. 5) Stop the engine. 6) Remove the refill plug and add fluid. 6. Install the refill plug. 7. Lowering the vehicle. Note: No need to add ATF if few amounts of ATF flows on the service, such as A/T oil cooler hose replacement etc. *: The amount of the refilled ATF is different depending on the content of work

Reference (Automatic Transmission)
-V -_ Overflow Tube and Overflow Plug Overflow Plug Height of overflow tube decides the quantity of ATF. Overflow Tube

-V -_ Notice of ATF WS DO NOT USE ATF T-IV for transmission which is using ATF WS Refill Plug Cover - New automatic transmission with ATF type WS is designed for ATF WS using. If required ATF is not filled, the designed performance will not achieved. - Tightening torque for refill plug: 39 N·m (400 kgf·cm, 29 ft·lbf.) NOTE: If this notice is not followed, there is a possibility that sufficient potential cannot be performed

-_ Fluid level check Service procedure Refill the ATF Start the engine Activate the test mode Adjust the ATF level P R N D S + - Start the engine Shift the shift lever into all position [Start the engine] 1. Start the engine. 2. Shift all position from P to S (1-6) range, and return to P range at engine idling and brake depressing.

-_ Fluid level check (without Intelligent Tester) Service procedure (Test mode) Connect TC and CG of DLC3 Shift alternately the shift lever from N to D position Confirm the D range indicator of combination meter lights up for 2 secs. Remove the SST from DLC3 Refill the ATF Start the engine Activate the test mode Adjust the ATF level P R N D S + - 1.5 secs. or less D N 6 secs. or more [Check the ATF temperature] (without Intelligent Tester) 1. Connect SST to the TC and CG of DLC3 (SST No ). 2. Shift alternately from N to D range position until “D” position indicator lights up. 3. Confirm “D” position indicator lights up for 2 seconds (Shift to test mode). 4. Remove the SST from DLC3. “D” Range Indicator

-_ Fluid level check (with Intelligent Tester) Service procedure (DATA LIST) Refill the ATF Start the engine Activate the test mode Adjust the ATF level DATA LIST Connect the Intelligent Tester Select the DATA LIST of the A/T Check ATF temp. on the display Check AT Fluid Temperature [Check the ATF temperature] (with Intelligent Tester) 1. Connect the Intelligent Tester. 2. Select the DATA LIST of the A/T. 3. Check ATF temperature on the display.

-_ Fluid level check Service procedure for with ATF warmer model With ATF warmer model requires the following Refill the ATF Start the engine Activate the test mode Adjust the ATF level Start the engine Engine speed raises to 2,500 r.p.m. for 90 sec. Idle for 20 sec. Again, engine speed raises to 2,500 r.p.m. for 90 sec. With ATF warmer model, ATF temp. is usually raised before fast idling is completed. ATF adjustment should be performed after the fast idling completion. To warm-up the engine earlier, perform the following operation during ATF warm-up. 1. Start the engine. 2. Rise the engine speed to 2,500 r.p.m. and held for 90 sec.. 3. Then idle for 20 sec.. 4. Again, rise the engine speed to 2,500 r.p.m. and held for 90 sec..

-_ Fluid level check Service procedure for with ATF warmer model If the D range indicator turns to ON (ATF temp.: 46 – 56 °C [ °F]) Idling speed is less than 1,000 r.p.m. Idling speed is more than 1,000 r.p.m. 5. D range indicator turns to ON (The ATF temp. reaches 46 °C [115 °F]). 6. Check idling speed. - 1,000 r.p.m. or less >>> adjust the ATF level - 1,000 r.p.m. or more >>> all over again All over again (ATF temp. is cooled) Adjust the fluid level

-_ Fluid level check Service procedure Check that ATF is a proper temperature Lift up the vehicle with engine running Remove the overflow plug If ATF will overflows, wait and proceed to the Step4 If no ATF overflow, perform the procedure listed right Retighten the overflow plug and refill plug with a new gasket Refill the ATF Start the engine Activate the test mode Adjust the ATF level Install the overflow plug Stop the engine Add 0.4 liters [0.42 US qts, 0.35 lmp qts] of ATF Allow the engine to idle and wait for 10 seconds Return to Step1 [Adjust the ATF oil level] The ATF temperature must be between °C [ °F] to check the ATF level. 1. Check that ATF is a proper temperature (D range indicator ON = °C [ °F]). 2. Lift-up the vehicle with engine running. 3. Remove the overflow plug. - If ATF will overflows from overflow plug, wait until the overflow slows to a trickle and proceed to Step4. - If no ATF overflow, perform following steps. 1) Install the overflow plug. 2) Stop the engine. 3) Add 0.4 liters [0.42 US qts, 0.35 lmp qts] of ATF from refill plug. 4) Allow the engine to idle and wait for 10 seconds. 5) Recheck the ATF level (return to Step1). 4. Install overflow plug with a new gasket (Specified Torque: 20 N·m (205 kgf·cm, 15 ft·lbf). 5. Install refill plug with a new gasket (Specified Torque: 39 N·m (400 kgf·cm, 29 ft·lbf). [Reference] The Step3 procedure is changed from GS430/300. (Red-colored font: changed from GS430/300)

-_ Fluid level check D Range Position Indicator D Range Position Indicator ATF Temp. No indication Under proper ATF temperature Lights Up Proper ATF temperature 46 – 56 °C (114.8 – F°) Blinking More than proper ATF temperature ATF temperature indication - No indication: Lower temp. - Turn on: Proper temp. - Blinking: Higher temp.

-V -_ Specifications Transmission Type A760E Engine Type 3GR-FE Gear Ratios 1st 3.520 2nd 2.042 3rd 1.400 4th 1.000 5th 0.716 6th 0.586 Reverse 3.244 Fluid Type ATF Type WS

-V -_ ATF Warmer ATF warmer is used for the purpose of warning up the ATF quickly and to set the ATF temp. higher from Engine To Engine ATF warmer is used for all AT model. ATF Warmer ATF Condition Operation During Warm-up Coolant  ATF Warm up the ATF quickly by engine coolant After Warm-up Low, middle load Coolant  ATF Keep the temp. of ATF High load Coolant  ATF Cool down the ATF by engine coolant

-V -_ Planetary Gear Unit Planetary gear unit consists of three planetary gear units, four clutches / brakes / one-way clutches B4 F3 B2 F2 B3 C3 C1 C4 B1 F1 C2 F4 Input Shaft Input Output Three planetary units, four clutches, four brakes, and four one-way clutches. : Clutch : Brake : One-way Clutch

-V -_ Planetary Gear Unit Planetary gear unit consists of three planetary gear units, four clutches / brakes / one-way clutches No. 3 Clutch (C3) No. 1 Clutch (C1) No. 3 Brake (B3) No. 2 Clutch (C2) No. 1 Brake (B1) Front Planetary Gear No. 2 Brake (B2) No. 4 Brake (B4) Input Shaft Output Shaft Center Planetary Gear No. 4 Clutch (C4) Rear Planetary Gear No. 4 One-way Clutch (F4) Intermediate Shaft No. 1 One-way Clutch (F1) No. 3 One-way Clutch (F3) No. 2 One-way Clutch (F2)

-V -_ Planetary Gear Unit Specifications Transmission Type A760E Engine Type 3GR-FE Clutch C1 Number of Disc 4 C2 5 C3 C4 3 Brake B1 B2 B3 B4 One-way Clutch F1 Number of Sprags 24 F2 25 F3 26 F4 27

-V -_ Valve Body The valve body consists of the upper and lower valve bodies and 9 solenoid valves Linear Solenoid SLU Linear Solenoid SL2 Shift Solenoid S3 Shift Solenoid S2 9 solenoid valves including 4 linear control solenoid valves. Shift Solenoid S4 Shift Solenoid S1 Shift Solenoid SR Linear Solenoid SLT Linear Solenoid SL1

-V -_ Valve Body Function of solenoid valves Solenoid Valve Type Function Shift Solenoid Valve S1 3-way Switches the 1-2 shift valve Switches the SL1 relay valve S2  Switches the 2-3 shift valve Switches the 5-6 shift valve S3 Switches the 3-4 shift valve S4 Switches the 4-5 shift valve SR Switches the C4 relay valve Switches the B1 relay valve Linear Solenoid Valve SL1  C1 clutch pressure control Accumulator back pressure control SL2 Brake pressure control SLT Line pressure control SLU Lock-up clutch pressure control Shift solenoid valve: 3-way for all shift solenoid valve.

-V -_ Planetary Gear Unit Operating condition Gear Clutch Brake One-way Clutch C1 C2 C3 C4 B1 B2 B3 B4 F1 F2 F3 F4 Parking Reverse   Neutral 1st 2nd 3rd  4th 5th 6th : Operation : During Engine Braking : Only for Connection

-V -_ Electronic Control System System A760E Clutch Pressure Control Clutch to clutch shift control  Clutch pressure optimal control Line pressure optimal control High Response Shift Control Flex Lock-up Clutch Control Lock-up Clutch Control Engine Torque Control Garage Shift Control (“N” to “D” Squat Control) AI-SHIFT Control Shift Down Control Orifice Switching Control Multi-mode Automatic Transmission (with paddle shift)

High Friction Brake Pad
-V -_ Front Brake High friction pads for high brake performance and excellent brake feeling High Friction Brake Pad Caliper [Front Brake] High Friction Brake Pad: All models High Friction Brake Pad Pad material: Non-asbestos with Metal Coefficient of Friction: 0.45  Conventional Type Brake Pad Pad material: Non-asbestos Coefficient of Friction: 0.3 –0.4  [Maintenance Schedule] Maintenance schedule for brake pad and disc is the same as conventional model. Disc Rotor

Service Point (Brake) Front Brake
-_ Front Brake When brake pads are replaced, brake disc thickness is required to be measured The high brake performance is achieved by proper wear of brake pads and discs. As a result, the brake discs may wear earlier than the ones on the conventional brake system [Service point for high friction brake pad] - The high brake performance is achieved by proper wear of brake pads and discs. As a result, the brake discs may wear earlier than the ones on the conventional brake system. - When brake pads are replaced, brake disc thickness is required to be measured. - It is dangerous to continue driving when brake pads and discs have exceeded the wear limit. - Brake dust can be easily removed from the wheel by washing the wheel with water. CAUTION It is dangerous to continue driving when brake pads and discs have exceeded the wear limit

“R” shows the disc rotor for RH
Brake -V Front Brake (G.C.C. countries only) Spiral fin type ventilated disc brake to improve cooling performance Spiral Fin [Front Brake] (G.C.C. countries only) Spiral fin type ventilated disc is used to improve cooling performance. Note: “R” mark is marked to the disc rotor RH “L” mark is marked to the disc rotor LH “R” shows the disc rotor for RH

Steering EPS (Electric Power Steering) Motor drives the rack directly
-_ EPS (Electric Power Steering) Motor drives the rack directly Resolver Type Torque Sensors Vehicle speed sensing type EPS. The steering gear unit consisting of the brushless motor, reduction mechanism and the torque sensors. The motor directly drive the rack. [Reference] Major Difference From GS430 / 300. - EPS relay is integrated in EPS ECU. - Diagnosis communication uses CAN protocol. Steering Gear Unit Burushless Motor Reduction Mechanism Rotational Angle Sensor

Steering System Diagram -V -_ CAN Gateway ECU BEAN DLC3 EPS ECU
Engine ECU CAN Gateway ECU BEAN Skid Control ECU DLC3 P/S EPS ECU P/S Warning Light Temp. Sensor Torque Sensors Boost Converter EPS Motor Drive (27-34V) Engine ECU: sends engine speed signal Skid Control ECU: sends vehicle speed signal Battery (12V) Rotation Angle Sensor

Steering Torque Sensor (Resolver Type)
-_ Torque Sensor (Resolver Type) Torque sensor detects the twist of torsion bar, changes it into the electric signal, and outputs it to EPS ECU Main Shaft (Input Shaft) Torsion Bar Resolver 1 to EPS ECU Resolver 2 Pinion Shaft (Output Shaft) Rack Shaft

Steering Torque Sensor (Resolver Type)
-_ Torque Sensor (Resolver Type) Torque sensor consists of resolver 1, 2 and torsion bar Resolver 1 of rotor portion is fixed to main shaft, resolver 2 of rotor portion is fixed to pinion shaft. Main Shaft (Input Shaft) Torsion Bar Resolver 1 (Stator Portion) The two resolvers for the torque sensor are mounted to the main shaft (input shaft) and the pinion shaft (output shaft) respectively, which are coupled with the torsion bar. Resolver 1 (Rotor Portion) Resolver 2 (Rotor Portion) Pinion Shaft (Output Shaft) Resolver 2 (Stator Portion)

Reference (Steering) Torque Sensor (Resolver Type)
-_ Torque Sensor (Resolver Type) Resolvers of rotor portion generate a relative angle difference of a twist of the torsion bar Main Shaft (Input Shaft) Resolver 1 (Rotor Portion) The resolver 1 and 2 of the rotor portion generate a relative angle difference that is equivalent to twisting of the torsion bar, and the resolver 1 and 2 of stator portions receive the angles of the rotors in the form of electric signals and output them to the EPS ECU. Resolver 2 (Rotor Portion) Pinion Shaft (Output Shaft)

-_ Torque Sensor (Resolver Type) Characteristic of resolver Exciting Coil Detection Coil 1 2 3 4 4 1 3 2

-_ Torque Sensor (Resolver Type) Detection method of torque sensor Stator Portion Rotor Portion Stator Portion Signal A Signal B EPS ECU applies 12V to exciting coil.

-_ Torque Sensor (Resolver Type) Detection method of torque sensor Stator Portion Rotor Portion Stator Portion Signal A Signal B

-_ Torque Sensor (Resolver Type) One resolvor outputs two signals with which the phase lagged 90 degrees to detect a relative angle Output Signal (V) t Resolver (Rotor Portion) Signal A Relative angle can be detected by comparing the signal A and signal B waveforms. Signal B AUTO Resolver (Stator Portion) MANUAL

-_ Torque Sensor (Resolver Type) Resolver of rotor portion outputs the straight signal, when resolver of stator portion stayed Output Signal (V) t Resolver (Rotor Portion) Signal A Signal B Resolver (Stator Portion)

-_ Torque Sensor (Resolver Type) When vehicle is driven straight, resolver 1 and 2 output the signals of the same signal [Resolver 1 Output Signal] [Resolver 2 Output Signal] t t t t

-_ Torque Sensor (Resolver Type) When steering is turned, relative angle difference is created between the resolver 1 and 2 of rotor portion [Resolver 1 Output Signal] [Resolver 2 Output Signal] t t t t When the driver turns the steering wheel, a relative angle difference is created between the resolver 1 and 2 of rotor portion, and based on these signals, the EPS ECU calculates the assist current from relative angle difference.

-_ Torque Sensor (Resolver Type) EPS ECU decides assist voltage to a EPS motor from difference in relative position of resolver 1 and 2  1   1 - 2 EPS ECU Assist Voltage 2

Steering Motor (Brushless Type)
-V -_ Motor (Brushless Type) Motor is concentric with rack shaft, and consists of rotation angle sensor, stator and rotor Coil Rotation Angle Sensor Stator Motor The motor is high power output, brushless type motor that is driven by a voltage of 27-34V. Boost converter in EPS ECU converts the voltage of the battery from 12V to 27-34V and supplies this power source to the motor. Magnet Rack Shaft Rotor

Protrusion for Rotation Angle Sensor
Steering -V -_ Motor (Brushless Type) Coil Protrusion for Rotation Angle Sensor Stator Rack Shaft Rotation Angle Sensor Rotor with Magnet

Ball Screw Reduction Gear
Steering -V -_ Reduction Mechanism Movement of motor travels to ball screw reduction gear, via balls, to gear that is created on rack shaft Ball Screw Reduction Gear Ball Rack Shaft Rotor Ball screw reduction gear is fixed to rotor

Steering Reduction Mechanism
-V -_ Reduction Mechanism Ball is circulating the inside of the ball screw reduction gear by the ball director Ball screw reduction gear has four ball directors Ball Director Ball Screw Reduction Gear Ball Director Ball Ball Screw Reduction Gear Rack Shaft Rotor Ball screw reduction gear is fixed to rotor

Steering Rotation Angle Sensor (Resolver Type)
-_ Rotation Angle Sensor (Resolver Type) Detects the rotation angle of the motor for preventing torque fluctuations Rotation Angle Sensor Output Signal (V) t Signal A Detection method of position is the same as the torque sensor. Relative angle can be detected by comparing the signal A and signal B waveforms. Signal B Rotor Rack Shaft Protrusion

Assist Power Current Output
Steering -V -_ EPS Operation Relationship between the steering torque and the assist power current output Low Assist Power Current Output Vehicle Speed The EPS ECU receive signals from various sensors, judges the current vehicle condition, and determines the assist current to be applied to the motor accordingly. High Steering Torque

Steering EPS Operation
-V -_ EPS Operation There are the following functions in assist control Item Function Basic Control Calculates the assist current from the steering torque value and the vehicle speed, and actuates the motor Inertia Compensation Control Improves the starting movement of the motor when the driver starts to turn the steering wheel Recovery Control During the short interval between the time the driver fully turns the steering wheel and the wheels try to recover, this control assists the recovery force Damper Control Regulates the amount of assist when the driver turns the steering wheel while driving at high speeds, thus damping the changes in the yaw rate of the vehicle body Voltage Boost Control Boosts the battery voltage in the EPS ECU. It maintains 0 volts when the driver does not turn the steering wheel or the vehicle is being driven straight. It effects variable control between 27 to 34 volts in accordance with the load, when the driver is turning the steering wheel. System Overheat Protection Control Estimates the motor temp. based on the amperage and the current duration . If the temp. exceeds the standard, it limits the amperage to prevent the motor from overheating

Steering -V -_ Diagnosis When malfunction occurs in EPS system, EPS ECU controls following control; Turns on P/S warning light and fail-safe operation DTC No. Detection Item P/S C1511 / 11 Torque sensor malfunction Illuminate C1512 / 11 C1513 / 11 C1515 / 15 Torque sensor zero point adjustment undone C1516 / 16 Torque sensor zero point adjustment incomplete C1521 / 25 Motor malfunction C1522 / 25 C1523 / 24 C1524 / 24 C1525 / 17 Rotation angle sensor output initialization undone C1526 / 18 Rotation angle sensor output initialization incomplete C1528 / 12 Motor rotation angle sensor malfunction DTCs store in memory [Torque Sensor Malfunction] C1511: Torque sensor (TRQ1) signal error or stop C1512: Torque sensor (TRQ2) signal error or stop C1513: Deviation between torque sensor TRQ1 and TRQ2 is out of specification [Motor Malfunction] C1521: Motor overcurrent malfunction C1522: Motor current sensor malfunction C1523: Excessively large current deviation C1524: Voltage error between motor terminals

Steering Diagnosis -V -_ DTC No. Detection Item P/S C1531 / 25
ECU malfunction Illuminate C1532 / 25 C1533 / 25 C1534 / 25 C1541 / 13 Vehicle speed signal malfunction C1551 / 25 IG power source voltage malfunction C1552 / 22 PIG power supply voltage malfunction C1554 / 23 Power supply relay failure C1555 / 25 Motor relay welding failure C1581 / 26 Assist map number un-writing U0073 / 49 Control module communication bus off U0104 / 45 Lost communication with cruise control module  U0105 / 41 Lost communication with fuel injector control module U0104, U0105: P/S warning light is not turned ON [EPS malfunction] C1531: ECU internal malfunction (CPU malfunction) C1532: ECU internal malfunction (Peripheral circuit malfunction) C1533: ECU internal malfunction (Substrate temp. sensor malfunction) C1534: ECU internal malfunction (EEPROM error)

Steering Diagnosis -V -_ DTC No. Detection Item P/S U0121 / 42
Lost communication with anti-lock brake system (ABS) control module Illuminate U0122 / 42 Lost communication with vehicle dynamic control module  U0405 / 45 Lost Communication With ACC ECU U0122, U0405: P/S warning light is not turned ON

Prohibit steering assist control
-V -_ Fail-safe DTC No. Detection Item Fail-safe Operation C1511 / 11 Torque sensor malfunction Prohibit steering assist control C1512 / 11 C1513 / 11 C1516 / 16 Torque sensor zero point adjustment incomplete C1521 / 25 Motor malfunction C1522 / 25 C1523 / 24 C1524 / 24 C1526 / 18 Rotation angle sensor output initialization incomplete C1528 / 12 Motor rotation angle sensor malfunction

Steering Fail-safe -V -_ DTC No. Detection Item Fail-safe Operation
EPS ECU malfunction Prohibit steering assist control C1532 / 25 C1533 / 25 Protection function which EPS ECU is canceled. And steering assist control is continued C1534 / 25 Amount of power assist is fixed for a 62.5 mph (100 km/h) C1541 / 13 Vehicle speed signal malfunction C1554 / 23 Power supply relay failure C1555 / 25 Motor relay welding failure  Motor overheating Assist current to the motor is limited until temperature falls

Remove, install or replacing
Steering -V -_ Initialization and Calibration Perform the initialization and calibration of EPS system in the following cases Remove, install or replacing Using the Intelligent Tester-II Steering Wheel Steering column assy Steering gear assy EPS ECU Replace the new one Using the SST NOTE: These operation cannot be performed when the DTCs are outputted except C1515 / C1525

Service Point (Steering)
-_ Initialization and Calibration Using the intelligent tester-II Select Chassis  EPS Utility Torque Sensor Adjustment

-_ Initialization and Calibration Using the intelligent tester-II

-_ Initialization and Calibration Using the intelligent tester-II 10

-_ Initialization and Calibration If DTCs are outputted except C1515 / C1525

-_ Initialization and Calibration Using the SST ( ) 1. Initialization of EPS ECU 1. Connect terminals Tc and CG and turn the ignition switch to ON 3. Disconnect and connect terminal Tc 20 times within 20 sec. CG Tc 4. Confirm the P/S warning light indicates 2. Connect terminals Ts and CG P/S 5. Turn the ignition switch to OFF Ts

-_ Initialization and Calibration Using the SST ( ) 2. Calibration of motor rotation angle sensor 1. Connect terminals Ts and CG and turn the ignition switch to ON 2. Turn the steering 45 degree or more (both side) CG N Ts

-_ Initialization and Calibration Using the SST ( ) 3. Calibration of torque sensor 1. Connect terminal Tc after calibration of motor rotation angle sensor 2. Confirm the P/S warning light blinks CG P/S 3. Disconnect SST and turn the ignition switch to OFF Ts

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