ignition KIA CARNIVAL 2007 Service Manual

63Injector (Cylinder #2) control
output
Idle
PulseBattery Voltage
14.06V
Max. 1.0V 44.2mV
64 Injector (Cylinder #3) control
output
Idle
PulseBattery Voltage
14V
Max. 1.0V 38.31mV
65 - yy y y
66 - yy y y
67 Heated Oxygen Sensor [Bank 2 /
Sensor 1] Heater control output
Engine Run
PulseHi: Battery Voltage
14.07V
Lo: Max. 1.0V 275mV
68 Injector (Cylinder #4) control
output
Idle
PulseHi: Battery Voltage
13.96V
Lo: Max. 1.0V 55.71mV
69 Injector (Cylinder #5) control
output
Idle
PulseHi: Battery Voltage
14V
Lo: Max. 1.0V 40.82mV
70 Heated Oxygen Sensor [Bank 1 /
Sensor 1] Heater control output
Engine Run
PulseHi: Battery Voltage
14.07V
Lo: Max. 1.0V 275mV
71 Injector (Cylinder #6) control
output
Idle
PulseHi: Battery Voltage
13.95mV
Lo: Max. 1.0V 55.77mV
72 Injector (Cylinder #1) control
output
Idle
PulseHi: Battery Voltage
14.07V
Lo: Max. 1.0V 56.7mV
73 Heated Oxygen Sensor [Bank 2 /
Sensor 2] Heater control output
Engine Run
PulseHi: Battery Voltage
13.87V
Lo: Max. 1.0V 275mV
74 Heated Oxygen Sensor [Bank 1 /
Sensor 2] Heater control output
Engine Run
PulseHi: Battery Voltage
14.07V
Lo: Max. 1.0V 275mV
75 - yy y y
76 Battery Power AlwaysDCBattery Voltage
12.39V
1.0 mA or below 1.5 mA 0.34mA
77 Ignition Coil (Cylinder #3) control
output Idle
Pulse 1st Voltage:
200~400V 289V
ON Voltage: Max. 2V 1.87V
78 Ignition Coil (Cylinder #5) control
output Idle
Pulse 1st Voltage:
200~400V 279V
ON Voltage: Max. 2V 1.93V
79 Ignition Coil (Cylinder #1) control
output Idle
Pulse 1st Voltage:
200~400V 269V
ON Voltage: Max. 2V 1.91V
80 - yy y y

2007 > 2.7L V6 GASOLINE >
INSPECTION
FUNCTION AND OPERATION PRINCIPLE
Mass Air Flow Sensor (MAFS) is a hot - film type sensor and is located in between the air cleaner and the throttle
body. It consists of a tube, a sensor assembly and honeycomb cell and detects intake air quantity flowing into the
intake manifold. Air flows from the air cleaner assembly through the honeycomb cell and over the hot film element. At
this time, heat transfer is generated by convection and this sensor loses its energy. This sensor detects the mass air
flow by using the energy loss and transfers the information to the PCM by frequency. The PCM calculates fuel quantity
and ignition timing.
SPECIFICATION
Air Flow (kg/h) Output Frequency (Hz)
12.6 kg/h 2,617Hz
18.0 kg/h 2,958Hz
23.4 kg/h 3,241Hz
32.4 kg/h 3,653Hz
43.2 kg/h 4,024Hz
57.6 kg/h 4,399Hz
72.0 kg/h 4,704Hz
108.0 kg/h 5,329Hz
144.0 kg/h 5,897Hz
198.0 kg/h 6,553Hz
270.0 kg/h 7,240Hz
360.0 kg/h 7,957Hz
486.0 kg/h 8,738Hz
666.0 kg/h 9,644Hz
900.0 kg/h 10,590Hz
CIRCUIT DIAGRAM

COMPONENT INSPECTION
1.Turn ignition switch OFF.
2. Disconnect IATS connector.
3. Measure resistance between IATS terminals 4 and 5.
4.Check that the resistance is within the specification.
Specification: Refer to SPECIFICATION.

2007 > 2.7L V6 GASOLINE >
INSPECTION
FUNCTION AND OPERATION PRICIPLE
Engine Coolant Temperature Sensor (ECTS) is located in the engine coolant passage of the cylinder head for
detecting the engine coolant temperature. The ECTS uses a thermistor whose resistance changes with the
temperature. The electrical resistance of the ECTS decreases as the temperature increases, and increases as the
temperature decreases. The reference 5 V in the PCM is supplied to the ECTS via a resistor in the PCM.That is, the
resistor in the PCM and the thermistor in the ECTS are connected in series. When the resistance value of the
thermistor in the ECTS changes according to the engine coolant temperature, the output voltage also changes. During
cold engine operation the PCM increases the fuel injection duration and controls the ignition timing using the
information of engine coolant temperature to avoid engine stalling and improve drivability.
SPECIFICATION
Temperature Resistance(kΩ)
°C °F
- 40 - 4048.14
- 20 -414.13 ~ 16.83
0 325.79
20 682.31 ~ 2.59
40 104 1.15
60 140 0.59
80 176 0.32
CIRCUIT DIAGRAM

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

COMPONENT INSPECTION
1.Connect a scantool on Diagnoisis Link Connector (DLC).
2. Start engine and check output voltages of APS 1 and 2 at C.T and W.O.T.
Specification
Condition Output Voltage (V)
APS1 APS2
C.T 0.70 ~ 0.80 0.29 ~ 0.46
W.O.T 3.85 ~ 4.35 1.93 ~ 2.18
3. Turn ignition switch OFF and disconnect the scantool from the DLC.
4. Disconnect APS connector and measure resistance between APS terminals 5(6) and 4(5) (APS 1).
Specification: Refer to SPECIFICATION.
5. Disconnect APS connector and measure resistance between APS terminals 6(3) and 2(4) (APS 2).

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.

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

2007 > 2.7L V6 GASOLINE >
INSPECTION
FUNCTION AND OPERATION PRICIPLE
Based on information from various sensors, the PCM measures the fuel injection amount. The fuel injector is a
solenoid- operated valve and the fuel injection amount is controlled by length of time that the fuel injector is held open.
The PCM controls each injector by grounding the control circuit. When the PCM energizes the injector by grounding
the control circuit, the circuit voltage should be low (theoretically 0V) and the fuel is injected. When the PCM de-
energizes the injector by opening control circuit, the fuel injector is closed and circuit voltage should momentarily peak.
If an injector connector is disconnected for more than 46 seconds while the engine runs, the PCM will determine
that the cylinder is misfiring and cut fuel supply. So be careful not to exceed 46 seconds. But the engine runs
normally in 10 seconds after turning the ignition key off.
SPECIFICATION
Item Specification
Coil Resistance (Ω) 13.8 ~ 15.2Ω at 20°C (68°F)
CIRCUIT DIAGRAM

COMPONENT INSPECTION
1.Turn ignition switch OFF.
2. Disconnect injector connector.
3. Measure resistance between injector terminals 1 and 2.