2007 KIA CARNIVAL Workshop Manual

Variable Intake Solenoid Valve(VIS)

2007 > 2.7L V6 GASOLINE >
INSPECTION
FUNCTION AND OPERATION PRICIPLE
Variable Intake manifold Solenoid (VIS) valves are installed on surge tank (VIS Valve #1) and intake manifold (VIS
Valve #2). These VIS valve #1 and #2 control vacuum modulators which activate valves in surge tank and intake
manifold. These valves are opened or closed by PCM according to engine condition (Refer to below table).
Engine Condition VIS Valve #1
(Surge Tank) VIS Valve #2
(In - manifold) Operation
Low
Speed Closed
ClosedIncreasing engine performance in low engine speed by
reducing intake interference among cylinders
Medium Speed Open
Open or closed Increasing intake efficiency
High
Speed Open
OpenMinimizing intake resistance by shortening intake manifold
length and increasing area of air entrance
SPECIFICATION
Item
Specification
Coil Resistance (Ω) 29.0 ~ 35.0 Ω at 20°C (68°F)
CIRCUIT DIAGRAM

COMPONENT INSPECTION
1.Turn ignition switch OFF.
2. Disconnect VIS Valve connector.
3. Measure resistance between VIS Valve #1,2 terminals 1 and 2.
4.Check that the resistance is within the specification.
Specification: Refer to SPECIFICATION.

Electronic Throttle System(ETS)

2007 > 2.7L V6 GASOLINE >
INSPECTION
FUNCTION AND OPERATION PRICIPLE
ETC (Electronic Throttle Control) system is electronically controlled throttle device which controls the throttle valve. It
consists of ETC motor, throttle body and throttle position sensor (TPS). A mechanical throttle control system receives a
driver's intention via a wire cable between the accelerator and the throttle valve, while this ETC system uses the signal
from the Accelerator Position Sensor (APS) installed on the accelerator pedal. After the PCM receives the APS signal
and calculates the throttle opening angle, it activates the throttle valve by using the ETC motor. Additionally, it can
handle cruise control function without any special devices.
SHEMATIC DIAGRAM

SPECIFICATION
[THROTTLE POSITION SENSOR]Throttle Angle(°) Output Voltage(V) [Vref = 5.0V]
TPS1 TPS2
0° 0V5.0V
10° 0.5V4.5V
20° 0.9V4.1V
30° 1.4V3.6V
40° 1.8V3.2V
50° 2.3V2.7V
60° 2.7V2.3V
70° 3.2V1.8V
80° 3.6V1.4V
90° 4.1V0.9V
100° 4.5V0.5V
110° 5.0V 0V
Item Sensor Resistance
TPS1 4.0 ~ 6.0kΩ at 20°C (68°F)
TPS2 2.7 ~ 4.1kΩ at 20°C (68°F)

[ETC MOTOR]Item Sensor Resistance
Coil Resistance (Ω) 1.275 ~ 1.725Ω at 20°C (68°F)
CIRCUIT DIAGRAM
FAIL-SAFE MODE
ModeDescription Symptom Possible Cause
a. ETC system can't proceed reliable
algorithm procedure

MODE 1FORCED ENGINE
SHUTDOWN Engine stop algorithm procedure
a. Fatal PCM internal programming error
b. Faulty intake system or throttle body
MODE 2 FORCED IDLE &
POWER
MANAGEMENT Forced idle state controlled by
fuel quantity regulation and
ignition timing adjustment a.
ETC system can't control engine power
via throttle device
b. Disabled throttle control or broken throttle
position information
MODE 3 FORCED IDLE Forced idle state and no response
for accelerator activation a.
No information about the accelerator
position
a. Malfuctioning APS 1 and 2, faulty A/D
converter or internal controller
MODE 4 LIMIT
PERFORMANCE & POWER
MANAGEMENT Engine power is determined by
accelerator position and idle
power requirement (Limited
vehicle running)
a.
ETC system can't securely control engine
power
MODE 5 LIMIT
PERFORMANCE a.
Engine power varies with
accelerator position, but driver
perceives lack of engine
power.
b. MIL ON (Normal vehicle
running) a.
Not reliable accelerator position signal or
bad maximum power generation
a. Faulty APS, ignition voltage or internal
controller
MODE 6 NORMALNormal
COMPONENT INSPECTION
1.Connect a scantool on Diagnoisis Link Connector (DLC).
2. Start engine and check output voltages of TPS 1 and 2 at C.T and W.O.T.
Condition Output Voltage (V)
TPS 1 TPS 2
C.T 0.25 ~ 0.9V Min. 4.0V
W.O.T Min. 4.0V 0.25 ~ 0.9V
3. Turn ignition switch OFF and disconnect the scantool from the DLC.
4. Disconnect ETC module connector and measure resistance between ETC module terminals 4 and 1 (TPS 1).
5. Measure resistance between ETC module terminals 7 and 6 (TPS 2).
Specification: Refer to SPECIFICATION.
ETC MOTOR
1.Disconnect ETC module connector and measure resistance between ETC module terminals 5 and 8.