sensor KIA CARNIVAL 2007 Repair Manual

2007 > 2.7L V6 GASOLINE >
INSPECTION
FUNCTION AND OPERATION PRICIPLE
Accelerator Position Sensor (APS) is installed on the accelerator pedal module and detects the rotation angle of the
accelerator pedal. The APS is one of the most important sensors in engine control system, so it consists of the two
sensors which adapt individual sensor power and ground line. The second sensor monitors the first sensor and its
output voltage is half of the first one. If the ratio of the sensor 1 and 2 is out of the range (approximately 1/2), the
diagnostic system judges that a malfunction has occurred.
SPECIFICATION
Pedal Position Output Voltage (V) [Vref = 5.0V]
APS1 APS2
C.T 0.7 ~ 0.8V 0.29 ~ 0.46V
W.O.T 3.85 ~ 4.35V 1.93 ~ 2.18V
Item Sensor Resistance
APS1 0.7 ~ 1.3kΩ at 20°C (68°F)
APS2 1.4 ~ 2.6kΩ at 20°C (68°F)
CIRCUIT DIAGRAM

Heated Oxygen Sensor(HO2S)

2007 > 2.7L V6 GASOLINE >
INSPECTION
FUNCTION AND OPERATION PRICIPLE
Heated Oxygen Sensor (HO2S) consists of zirconium and alumina and is installed on upstream and downstream of the
Manifold Catalyst Converter (MCC). After it compares oxygen consistency of the atmosphere with the exhaust gas, it
transfers the oxygen consistency of the exhaust gas to the PCM. When A/F ratio is rich or lean, it generates
approximately 1V or 0V respectively. In order that this sensor normally operates, the temperature of the sensor tip is
higher than 370°C (698°F). So it has a heater which is controlled by the PCM duty signal. When the exhaust gas
temperature is lower than the specified value, the heater warms the sensor tip.
SPECIFICATION
A/F Ratio Output Voltage (V)
RICH 0.80 ~ 0.92
LEAN 0.1
Item Specification

CVVT Oil Temperature Sensor(OTS)

2007 > 2.7L V6 GASOLINE >
INSPECTION
FUNCTION AND OPERATION PRICIPLE
The CVVT Oil Temperature Sensor (OTS) is a negative coefficient thermistor used by the PCM tl measure engine oil
temperature for the purpose of adjusting CVVT calculations.
SPECIFICATION
Temperature Resistance (kΩ)
°C °F
- 40 - 4052.0
- 20 -416.5
0 32 6.0
20 682.45
40 104 1.10
60 1400.544
80 1760.290
100 2120.164
120 2480.099
CIRCUIT DIAGRAM

COMPONENT INSPECTION
1.Turn ignition switch OFF.
2. Disconnect OTS connector.
3. Remove the OTS.
4. After immersing the thermistor of the sensor into water (or engine coolant), measure resistance between OTS
terminals 1 and 2.
5.Check that the resistance is within the specification.
Specification: Refer to SPECIFICATION.

Knock Sensor(KS)

2007 > 2.7L V6 GASOLINE >
INSPECTION
FUNCTION AND OPERATION PRICIPLE
Knocking is a phenomenon characterized by undesirable vibration and noise and can cause engine damage. Knock
Sensor (KS) senses engine knocking and the two sensors are installed inside the V- valley of the cylinder block. When
knocking occurs, the vibration from the cylinder block is applied as pressure to the piezoelectric element. At this time,
this sensor transfers the voltage signal higher than the specified value to the PCM and the PCM retards the ignition
timing. If the knocking disappears after retarding the ignition timing, the PCM will advance the ignition timing. This
sequential control can improve engine power, torque and fuel economy.
SPECIFICATION
Item Specification
Capacitance (pF) 950 ~ 1,350pF
WAVEFORM

Crankshaft Position Sensor
(CKPS)

2007 > 2.7L V6 GASOLINE >
INSPECTION
FUNCTION AND OPERATION PRICIPLE
Crankshaft Position Sensor (CKPS) detects the crankshaft position and is one of the most important sensors of the
engine control system. If there is no CKPS signal input, fuel is not supplied and the main relay does not operate. That
is, vehicle can't run without CKPS signal. This sensor is installed on transaxle housing and generates alternating
current by magnetic flux field which is made by the sensor and the target wheel when engine runs. The target wheel
consists of 58 slots and 2 missing slots on 360 CA (Crank Angle).
WAVEFORM
CIRCUIT DIAGRAM