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2007 > 2.7L V6 GASOLINE >
DESCRITION
Ignition timing is controlled by the electronic control ignition timing system. The standard reference ignition timing data
for the engine operating conditions are preprogrammed in the memory of the ECM (Engine Control Module).
The engine operating conditions (speed, load, warm- up condition, etc.) are detected by the various sensors. Based on
these sensor signals and the ignition timing data, signals to interrupt the primary current are sent to the ECM. The
ignition coil is activated, and timing is controlled.
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2007 > 2.7L V6 GASOLINE >
DESCRIPTION
Components FunctionRemarks
Crankcase Emission System a. Positive Crankcase Ventilation (PCV)
valve HC reduction
Variable flow rate type
Evaporative Emission System a. Evaporative emission canister
b. Purge Control Solenoid Valve (PCSV) HC reduction
HC reduction
Duty control solenoid valve
Exhaust Emission System a. MFI system (air- fuel mixture control
device)
b. Three- way catalytic converter CO, HC, NOx reduction
CO, HC, NOx reduction
Heated oxygen sensor feedback type
Monolithic type
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2007 > 2.7L V6 GASOLINE >
DESCRIPTION
Modifications to the combustion chamber, intake manifold, camshaft and ignition system form the basic control system.
These items have been integrated into a highly effective system which controls exhaust emissions while maintaining
good driveability and fuel economy.
AIR/FUEL MIXTURE CONTROL SYSTEM [MULTIPORT FUEL INJECTION (MFI) SYSTEM]
This in turn allows the engine to produce exhaust gases of the proper composition to permit the use of a three way
catalyst. The three way catalyst is designed to convert the three pollutants (1) hydrocarbons (HC), (2) carbon
monoxide (CO), and (3) oxides of nitrogen (NOx) into harmless substances. There are two operating modes in the MFI
system.
1. Open Loop air/fuel ratio is controlled by information programmed into the ECM.
2. Closed Loop air/fuel ratio is adjusted by the ECM based on information supplied by the oxygen sensor.
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during testing. An example would be if a problem appears only when the vehicle is cold but has not appeared when
warm. In this case, the technician should thoroughly make out a "CUSTOMER PROBLEM ANALYSIS SHEET" and
recreate (simulate) the environment and condition which occurred when the vehicle was having the issue.1. Clear Diagnostic Trouble Code (DTC).
2. Inspect connector connection, and check terminal for poor connections, loose wires, bent, broken or corroded pins,
and then verify that the connectors are always securely fastened.
3.Slightly shake the connector and wiring harness vertically and horizontally.
4. Repair or replace the component that has a problem.
5. Verify that the problem has disappeared with the road test.
● SIMULATING VIBRATION
a. Sensors and Actuators
: Slightly vibrate sensors, actuators or relays with finger.
Strong vibration may break sensors, actuators or relays
b. Connectors and Harness
: Lightly shake the connector and wiring harness vertically and then horizontally.
● SIMULATING HEAT
a. Heat components suspected of causing the malfunction with a hair dryer or other heat source.
a.DO NOT heat components to the point where they may be damaged.
b. DO NOT heat the ECM directly.
● SIMULATING WATER SPRINKLING
a. Sprinkle water onto vehicle to simulate a rainy day or a high humidity condition.
DO NOT sprinkle water directly into the engine compartment or electronic components.
● SIMULATING ELECTRICAL LOAD
a. Turn on all electrical systems to simulate excessive electrical loads (Radios, fans, lights, rear window defogger,
etc.).
CONNECTOR INSPECTION PROCEDURE
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2007 > 2.7L V6 GASOLINE >
SPECIFICATIONS
FUEL DELIVERY SYSTEM
Items Specification
Fuel Tank Capacity80 lit. (21.1 U.S.gal., 17.6 Imp.gal.)
Fuel Filter (built in Fuel Pump
assembly) Type
High pressure type
Fuel Pressure Regulator (built in
Fuel Pump assembly) Regulated Fuel
Pressure 375 ~ 385 kPa(3.82 ~ 3.92 kgf/cm², 54.3 ~ 55.8 psi)
Fuel Pump Type
Electrical, in - tank type
Driven by Electric motor
SENSORS
MASS AIR FLOW SENSOR (MAFS)
J Type: Hot - film type
J Specification
Air Flow (kg/h) 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
INTAKE AIR TEMPERATURE SENSOR (IATS)
J Type: Thermistor type
J Specification Temperature Resistance (kΩ)
°C °F
- 40 - 40100.87
- 20 -428.58
0 329.40
10 505.66
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20683.51
40 1041.47
60 1400.67
80 1760.33
MANIFOLD ABSOLUTE PRESSURE SENSOR (MAPS)
J Type: Piezo- resistive pressure type
J Specification Pressure (kPa) Output Voltage (V)
20.0kPa 0.79
46.66kPa 1.84
101.32kPa 4.0
ENGINE COOLANT TEMPERATURE SENSOR (ECTS)
J Type: Thermistor type
J 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
THROTTLE POSITION SENSOR (TPS)
J Type: Variable resistor type
J Specification (When reference voltage = 5.0V) Throttle Angle (°) Output Voltage(V)
TPS1 TPS2
0 05.0
10 0.54.5
20 0.94.1
30 1.43.6
40 1.83.2
50 2.32.7
60 2.72.3
70 3.21.8
80 3.61.4
90 4.10.9
100 4.50.5
110 5.00.0
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ItemSensor Resistance (kΩ)
TPS1 4.0 ~ 6.0 [20°C (68°F)]
TPS2 2.7 ~ 4.1 [20°C (68°F)]
ACCELERATOR POSITION SENSOR (APS)
J Type: Variable resistor type
J Specification (When reference voltage = 5.0V) Accelerator Position Output Voltage (V)
APS1 APS2
C.T 0.70 ~ 0.800.29 ~ 0.46
W.O.T 3.85 ~ 4.351.93 ~ 2.18
Item Sensor Resistance (kΩ)
APS1 0.7 ~ 1.3 [20°C (68°F)]
APS2 1.4 ~ 2.6 [20°C (68°F)]
HEATED OXYGEN SENSOR (HO2S)
J Type: Zirconia (ZrO2) type
J Specification A/F Ratio Output Voltage (V)
RICH 0.80 ~ 0.92
LEAN 0.1
Item Resistance (Ω)
Sensor Heater 3.0 ~ 4.0 [21°C (69.8°F)]
CAMSHAFT POSITION SENSOR (CMPS)
J Type: Hall effect type
J Specification Item Specification
Output Voltage (V) High: 4.75 ~ 5.25
Low: 0 ~ 0.7
Air Gap (mm) 0.5 ~ 1.5
CRANKSHAFT POSITION SENSOR (CKPS)
J Type: Magnetic field sensitive type
J Specification Item Specification
Coil Resistance (Ω) 630 ~ 770 [20°C (68°F)]
Air Gap (mm) 0.5 ~ 1.5
KNOCK SENSOR (KS)
J Type: Piezo- electricity type
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J SpecificationItem Specification
Capacitance (pF) 950 ~ 1,350pF
CVVT OIL TEMPERATURE SENSOR (OTS)
J Type: Thermistor type
J 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
ACTUATORS
INJECTOR
J Number: 6
J Specification
Item Specification
Coil Resistance (Ω) 13.8 ~ 15.2 [20°C (68°F)]
PURGE CONTROL SOLENOID VALVE (PCSV)
J Specification Item Specification
Coil Resistance (Ω) 14.0 ~ 18.0 [20°C (68°F)]
VARIABLE INTAKE SOLENOID (VIS) VALVE #1 (SURGE TANK SIDE)
J Specification Item Specification
Coil Resistance (Ω) 29.0 ~ 35.0 [22°C (71.6°F)]
VARIABLE INTAKE SOLENOID (VIS) VALVE #2 (INTAKE MANIFOLD SIDE)
J Specification Item Specification
Coil Resistance (Ω) 29.0 ~ 35.0 [20°C (68°F)]
CVVT OIL CONTROL VALVE (OCV) [BANK 1]
J Specification Item Specification