Kia Carnival (2009+). Manual — part 299

Automatic Transaxle System

Automatic Transaxle System

Automatic Transaxle System

2009 > G 2.7 DOHC >

Electronic Control System

DESCRIPTION

The electronic control system used in the new generation auto transaxle is far superior to the previous systems. This
system is able to adopt a variable shift pattern for smooth and problem free shifting.
A solenoid valve is applied to each of the clutches and brakes and is independently controlled. Feedback control and
correction control is performed in all gears as well as utilization of mutual control system to increase shift feeling.
The torque converter damper clutch uses a partial lock up and full lock-up system. An additional control method called
the HIVEC system (neural network) is adopted to increase shift feeling.

Block Diagram (CAN)

ELECTRIC CONTROL LOCATION

The TCM(PCM) is located on the intake manifold in the engine room.

OPERATING COMPONENTS AND FUNCTIONS

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 (4A/T)

Crank angle sensor

Detect engine speed

TPS(Gasoline)

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

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

ABS-ECM, Engine ECM

In case of CAN communication

Sports Mode

Sports Mode Switch

Sports mode allows the manual up-shift and downshift with the accelerator pedal is depressed. The prompt response
and shift would be obtained due to the continuous shifting without cutting of driving power. The shifting time is also
decreased about 0.1sec during up-shift, 0.2sec during downshift. As the selector lever is pushed upward or downward
one time, the gear is up shifted or downshifted by one gear.
Signals of sports mode switch

Items

Mode S/W

UP S/W

DOWN S/W

D range selection

OFF

OFF

OFF

Sports mode selection

ON

OFF

OFF

Sports mode up-shift selection

ON

ON

OFF

Sports mode downshift selection

ON

OFF

ON

Controller Area Network (CAN)

Previously, for different computers in the vehicle to share the same information, each signal required a different pin
and wiring. However, with the introduction of a CAN system, only two lines are required to achieve the same function.
The information is in digital format. This method does not use an integrated ECM.