jm at_20040129

JM Automatic Transaxle

1 Chonan Technical Service Training Center

Automatic Transaxle

- HIVEC -

Published by

Chonan Technical Service Training Center



Contents



1. General

1.1 Introduction

JM car has adopted a HIVEC automatic transaxle that is being widely applied on Hyundai

passenger and RV vehicles.

The main features include:

4 speed HIVEC (F4A42) model that was applied on XD and GK.

Sports mode lever is aupported for the SUV vehicle concept.

A/T relay related DTC was changed.

It has been delayed to adopt the fully variable force solenoid valve in JM. (Will be applied on the

next model of JM)

In case of Beta 2.0, the integrated SIEMENS PCM is applied.

Specifications

HIVEC Items

F4A42

Engine type Beta 2.0L Delta 2.7L D-2.0L C/Rail

Weight (kg) 80.6

Dist. betw. Shaft 204

Length (mm) 400

1st. 2.842

2nd. 1.529

3rd. 1.000

4th. 0.712

Gear

ratio

R 2.480

Final gear ratio 4.626 4.407(4WD)

4.042 (2WD) 4.042

Solenoid valve 5EA (PWM: Duty control)

Shift pattern Variable

Planetary gear set 2sets

(Output planetary / Overdrive planetary)

Clutch 3EA

Brake 2EA



Overdrive clutch

Reverse clutch

LR brake

2nd brake

Under drive clutch

Damper

clutch

One-way clutch

OWC 1EA

Shift range Sports mode (H-matic)

Without OD-OFF switch

Type ATF SP-3

Volume 7.8ℓ ATF

Replacement

Interval (Km)

100,000(Normal condition)

40,000(Hard condition)

1.2 Structure



Operating Element Symbol Function

Under drive clutch UD Connect input shaft and under drive sun gear

Reverse clutch REV Connect input shaft and reverse sun gear

Overdrive clutch OD Connect input shaft and over drive carrier

Low & Reverse brake LR Hold LR annulus gear and OD carrier

Second brake 2ND Hold reverse sun gear

One way clutch OWC Restrict the rotating direction of direct sun gear

1.3 Operating elements

Range Gear UD

Clutch

OD

Clutch

2nd

Brake

LR

Brake

REV

Clutch OWC

P,N ~ ~ ~ ~ ~

1 ~ ~ ~

2 ~ ~ ~

3 ~ ~ ~ ~ D

4 ~ ~ ~ ~

R ~ ~ ~ ~

1) : OWC is operated when shifts from 1st gear to 2nd gear.

2) L&R brake is released in 1st gear when the vehicle speed is more than 5KPH approximately.

: OWC1 is operated when shifts from 1st gear to 2nd gear.

Number of Disks

Items F4A42

U/D Clutch 4

O/D Clutch 4

REV Clutch 2

2ND Brake 3

LR Brake 6



2. Control System

2.1 Sensors

Sensor Function

Input shaft speed sensor Detect turbine speed at UD retainer

Output shaft speed sensor Detect T/F drive gear speed at T/F driven gear

Crank angle sensor Detect engine speed

TPS Throttle opening ratio by potentiometer

Air conditioner switch A/C load by thermister

Inhibitor switch Select lever position by contact switch

Brake switch Brake pedal position

Vehicle speed sensor Detect vehicle speed by speedometer driven gear

Sport mode switch Sport mode On/Off signal

Vehicle speed sensor Vehicle speed

Sport mode up-shift switch Sport mode up-shift signal

Sport mode downshift switch Sport mode downshift signal

Request of torque reduction Send the request of torque reduction to ECM

ESPCM, Engine ECM In case of CAN communication

A/T CONTROL RELAY

Shift pattern control

Hydraulic pressure

control during shift

Damper clutch control

HIVEC control

Mutual control

Diagnosis control

TCM Input shaft speed

Output shaft speed

Oil temperature

Inhibitor s/w

Brake s/w

DCCSV

L&R SOLENOID VALVE

2ND SOLENOID VALVE

UD SOLENOID VALVE

OD SOLENOID VALVE

DIAGNOSIS

ENG ECM (CAN Method)

ESPCM (CAN Method)

Sports mode S/W - Selection - Up shift - Down shift



Input shaft & Output shaft speed sensor

- Type: Hall sensor

- Current consumption: 22mA (MAX.)

- Sensor body and sensor connector have been unified as one.

- Hall type sensor: specification

Input shaft speed sensor 1.3 Air gap (mm)

Output shaft speed sensor 0.85

Input shaft speed sensor over 1MΩ Coil

Resistance Output shaft speed sensor over 1MΩ

High 4.85.2V Peak-Peak

Voltage Low 0.8V

Oil Temperature Sensor

The oil temperature sensor is of the thermistor type, and senses the automatic transaxle fluid

temperature. Using the signal from this sensor, TCM controls the shift pattern optimally during shift.

In order to operate the damper clutch, this signal is also referred.

- Range of temperature : -40145

- Type: Separated type (High / Low temperature)

- Standard value of internal resistance

Temperature

()

Resistance

(k)

Temperature

()

Resistance

(k)

-40 139.5 80 1.08

20 47.7 100 0.63±0.06

0 18.6±2 120 0.38

20 8.1 140 0.25

40 3.8 160 0.16

60 1.98

Inhibitor Switch

- Type: Rotary contact type

- Range of temperature : -40145

- Inhibitor Switch - Continuity check



Terminal Number Range

1 2 3 4 5 6 7 8 9 10

P

R

N

D

3.2 Actuators

Solenoid Valve for Pressure Control

- Sensor type: Normal open 3-way

- Operating temperature : -30130

- Frequency:

LR, 2ND, UD, OD: 61.27Hz (at the ATF temp. -20 above)

DCC: 30.64Hz

- Internal resistance: 2.6Ω or more

- Surge voltage: 56 V

- Identification Color of Each Solenoid Valves

Solenoid valve Wire color Housing Frequency

UD sol. valve White, Red, Red Black 61.27 Hz

OD sol. valve Orange, Red Black 61.27 Hz

L/R sol. valve Brown, Yellow Milky white 61.27 Hz

2’nd sol. valve Green, Red, Red Milky white 61.27 Hz

DCC sol. valve Blue, Yellow, Yellow Black 34.64 Hz

ATF temp. Sensor Black, Red Black

- Controlled Pressure

Solenoid valve Duty 0% Duty 50% Duty 75% Duty 100%

UD, OD, LR, 2ND 10.5±0.1 6.4±0.25 3.6±0.25 0.1 or less

DCC 10.5±0.1 5.9±0.3 3.2±0.3 0.1 or less



Solenoid Valves Schedule

Solenoid valves Operation

Position LR 2ND UD OD *DCC

1st gear OFF ON OFF ON OFF

2nd gear ON OFF OFF ON OFF

3rd gear ON ON OFF OFF ON

4th gear ON OFF ON OFF ON

Reverse OFF ON ON ON OFF

N, P (STD. mode) OFF ON ON ON OFF

N, P (Hold mode) ON OFF ON ON OFF

*: Reference value.

(DCC solenoid valve will be ON when the operating condition is satisfied)

A/T Control Relay

The control relay supplies power to the solenoid valves.

As soon as the A/T control relay is ON, the battery voltage is directly supplied to solenoid valves and

each solenoid valve is operated when the TCM grounds the opposite terminal. (-) Control At fail

safe condition, the power is cut causing 3rd gear hold.

The A/T relay DTC (“A/T relay open or short) is changed from P1723 into P0885 to satisfy the

renewed regulation of OBD.

T C M

B+

A/T control relay

Solenoid valves



Communication

Engine EMS Type TCM PCM Comm. Method

2.0

Beta SIEMENS SIEMENS Yes

Serial Comm.

Interface (SCI)

2.7 Delta SIEMENS MELCO No Controller Area

Network (CAN)

D 2.0 C/Rail BOSCH MELCO No Controller Area

Network (CAN)

- Block diagram (CAN)

3.3 Diagnostic Trouble Code

No Code Display Reference

1 P1704 TPS-SHORT PCM

2 P1703 TPS-OPEN/SHORT (GND) PCM

3 P1702 TPS-MAL.ADJUSTMENT PCM

4 P0713 FLUID TEMP. SNSR-OPEN

5 P0712 FLUID TEMP. SNSR-SHORT

6 P0725 CKP SENSOR-OPEN

7 P0715 INPUT SPEED S. OPEN/SHORT

8 P0720 OUTPUT SPEED S. OPEN/SHORT

9 P0703 STOP LAMP SW-OPEN/SHORT

Engine torque Engine rpm Engine type Throttle open angle Gear shift

CAN BUS

ESPCM

Eng. ECM

TCM TCS operate signal Engine torque Engine rpm Engine type Throttle open angle

No. of fuel cut cylinder Required engine torque

Engine torque Engine rpm Engine type Throttle open angle

No. of fuel cut cylinder Required engine torque



10 P0707 TR SWITCH-OPEN/SHORT (GND)

11 P0708 TR SWITCH-SHORT

12 P0750 L&R SV-OPEN/SHORT

13 P0755 UD SV-OPEN/SHORT

14 P0760 2ND SV-OPEN/SHORT

15 P0765 OD SV-OPEN/SHORT

16 P0743 TCC SOLENDOD-OPEN/SHORT

17 P0731 1ST GEAR INCORRECT RATIO

18 P0732 2ND GEAR INCORRECT RATIO

19 P0733 3RD GEAR INCORRECT RATIO

20 P0734 4TH GEAR INCORRECT RATIO

21 P0740 TCC SOL-DEFECTIVE/STUCK ON

22 P0885 A/T RELAY-OPEN/SHORT (GND)

23 P1630 CAN-BUS-OFF CAN TCM

24 P1631 CAN-TIME OUT ECU CAN TCM

25 P1764 CAN CONTROLLER-MAL. CAN TCM

26 P1749 SERIAL COM. LINK-OPEN/SHORT Integrated ECM

jm at_20040129

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