Engine Control System/Fuel System

Specifications

Specifications

Fuel Delivery System

Items	Specification
Fuel tank	Capacity	35 L (9.2 US gal, 37.0 US qt, 30.8 Imp. qt)
Fuel filter	Type	Paper Type
Fuel Pressure	Low Pressure Fuel Hose	480–520 kPa (4.9–5.3 kgf/cm², 69.6–75.4 psi)
	High Pressure Fuel Hose	2–20 MPa (20.4–203.9 kgf/cm², 290.1–2900.8 psi)
Fuel pump	Type	Electric, In-Tank Type
	Which was driven	Electric Motor
High pressure fuel pump	Type	Mechanical Type
	Which was driven	Camshaft

Gauges

Throttle Position Sensor (TPS) [Built into ETC Module]

Item		Opening Percentage (%)	Output Voltage (V) [Vref = 5 V]
TP1	THA	8,5 - 11,5	0,43 - 0,58
	THW	88 - 96	4,40 - 4,80
TP2	THA	88,5 - 91,5	4,43 - 4,58
	THW	2 - 10	0,10 - 0,50
Fail-safe		Throttle Valve Stuck at 5°
Supply Voltage (V)		4,8 - 5,2
Type		Non-Contact Hall IC Sensor [built into ETC module]

Manifold Absolute Pressure Sensor (MAPS) ▷ Type: Piezoresistive pressure sensor

Pressure [kPa (kgf/cm², psi)]	Output Voltage (V) [Vref = 5 V]
32,5 (0,33, 4,71)	0,5
284 (2,90, 41,19)	4,5

Intake Air Temperature Sensor (IATS) ▷ Type: Thermistor type

Temperature		Resistance (kOhm)
°C	°F
-40	-40	40,93 - 48,35
-30	-22	23.43 - 27.34
-20	-4	13.89 - 16.03
-10	14	8,5 - 9,7
0	32	5.38 - 6.09
10	50	3,48 - 3,90
20	68	2,31 - 2,57
30	86	1,9 - 2,1
40	104	1,08 - 1,21
50	122	0,76 - 0,85
60	140	0,54 - 0,62
70	158	0,40 - 0,45
80	176	0,29 - 0,34
90	194	0,22 - 0,26
100	212	0,17 - 0,20
110	230	0,13 - 0,15
120	248	0,10 - 0,12
130	266	0,08 - 0,09

Ambient Temperature Sensor (ATS) ▷ Type: Thermistor type

Temperature [°C (°F)]	Resistance (kOhm)
-40(-40)	811,1 - 956,8
-20(-4)	255,6 - 287,7
0(32)	91,5 - 98,8
20(68)	36,6 - 38,0
30(86)	23,8 - 24,7
40(104)	15,7 - 16,6
50(122)	10,6 - 11,3
60(140)	7,2 - 7,9
80(176)	3,6 - 4,0

Boost Pressure Sensor (BPS)

Pressure [kPa (kgf/cm², psi)]	Output Voltage (V) [Vref = 5 V]
32,5 (0,33, 4,71)	0,5
284 (2,90, 41,19)	4,5

▷ Type: Piezoresistive pressure sensor. Engine Coolant Temperature Sensor (ECTS) ▷ Type: Thermistor type

Temperature		Resistance (kOhm)
°C	°F
-40	-40	48.14
-20	-4	14.13 - 16.83
0	32	5,79
20	68	2,31 - 2,59
40	104	1,15
60	140	0,59
80	176	0,32
100	212	0,19
110	230	0,145 - 0,149
120	248	0,12

Crankshaft Position Sensor (CKPS) Except ISG

Item	Specification
Type	Magnetic Field Type
Coil Resistance (Ω)	819–1001 [20 °C]
Pin	2

ISG only

Item	Specification
Type	Hall Effect Type
Air Gap (mm)	0,5 - 1,5
Pin	3

Camshaft Position Sensor (CMPS)

Item	Specification
Type	Hall Effect Type
Air Gap (mm)	0,5 - 1,5
Pin	3

Knock Sensor (KS)

Item	Specification
Resistance (MΩ)	4,87
Capacitance (pF)	850 - 1150
Type	Piezoelectric
Pin	2

Heated Oxygen Sensor (HO2S) HO2S [Bank 1/Sensor 1]

Item	Specification
Heater Resistance (Ω)	2,5–4,0 [20 °C]
Type	Linear
Pin	6

HO2S [Bank 1 / Sensor 2]

Item	Specification
Heater Resistance (Ω)	Approximately 9.0 [20 °C]
Type	Binary
Pin	4

Rail Pressure Sensor (RPS)

Item	Specification
Rated Voltage (V)	5
Operating Voltage (V)	4,75 - 5,25
Connector	3

Pressure		Output Voltage (V) [Vref=5V]
bar	[MPa (kgf/cm², psi)]
0	0 (0, 0)	0,5
175	14 (142, 2031)	2,5
350	28 (286, 4061)	4,5

Accelerator Pedal Position Sensor (APS)

Accelerator Position	Output Voltage (V) [Vref = 5 V]
	VPA1	VPA2
THA	0,7 - 0,8	0,32 - 0,42
THW	3,98 - 4,22	1,93 - 2,17

WGT Electric Actuator Drive Sensor [built into EWGA]

Item	Specification
Supply Voltage (V)	4-6

Actuator

DC Motor [Built into ETC Module]

Item	Specification
Coil Resistance (Ω)	0,3–100 [20 °C]
Maximum Allowable Current (A)	< 10,0
Type	DC Motor [Built into ETC Module]

Injector

Item		Specification
Coil Resistance (Ω)		1.43–1.57 (23°C)
Fuel Pressure	bar	200 - 267
	MPa	20,0 - 26,7
	kgf/cm²	203 - 2722,6
	psi	2900 - 3872,5
Pin		2

Purge Control Solenoid Valve (PCSV)

Item	Specification
Coil Resistance (Ω)	18,5–22,5 [23 °C]
Pin	2

CVVT Oil Control Valve (OCV)

Item	Specification
Coil Resistance (Ω)	6,9–7,9 [20 °C]
Control Current (mA)	100 - 1000
Rated Voltage (V)	12
Insulation Resistance (MΩ)	50 [500 V DC/1 min]
Pin	2

WGT Electric Actuator DC Motor [built into EWGA]

Item	Specification
Maximum current (A)	< 6,0
Coil Resistance (Ω)	2,4 ± 0,36
Supply Voltage (V)	13,5
Supply Voltage Range (V)	9 - 16
Operating Frequency (kHz)	0,9 - 1,1

RCV Control Solenoid Valve

Item	Specification
Coil Resistance (Ω)	28,3–31,1 [20 °C]
Pin	2

Fuel Pressure Control Valve (FPCV)

Item		Specification
Coil Resistance (Ω)		0,54 [20 °C]
Pin		2
Peak Current (A)		5.3
Holding Current (A)		2,68
High-Pressure Fuel Pressure	bar	20 - 200
	MPa	2 - 20
	kgf/cm²	20,4 - 203,9
	psi	290,1 - 2900,8

Service Standard

Item	Specification
Ignition Timing (°)	TDC 0° ± 10°
Idle Speed (rpm)	A/C OFF (Neutral, N, P range)	850 ± 100
	A/C ON	850 ± 100

Tightening torque

Engine Control System

Item	kgf·m	N·m	lbf·ft
ECM Module Bracket Mounting Bolt/Nut	1,0 - 1,2	9,8 - 11,8	7,2 - 8,7
ECM Mounting Nut	1,0 - 1,2	9,8 - 11,8	7,2 - 8,7
Electronic Throttle Control (ETC) Module Mounting Bolt	0,8 - 1,0	7,8 - 9,8	5,7 - 7,2
Manifold Absolute Pressure Sensor (MAPS) Mounting Screw	0,65 - 0,85	6,4 - 8,3	4,7 - 6,1
Intake Air Temperature Sensor (IATS) Mounting Screw	0,65 - 0,85	6,4 - 8,3	4,7 - 6,1
Boost Pressure Sensor (BPS) Mounting Bolt	0,8 - 1,2	7,8 - 11,7	5,7 - 8,6
Engine Coolant Temperature Sensor (ECTS)	2,0 - 4,0	19,6 - 39,2	14,4 - 28,9
Crankshaft Position Sensor (CKPS) Mounting Bolt	1,0 - 1,2	9,8 - 11,8	7,2 - 8,7
Camshaft Position Sensor (CMPS) Mounting Bolt [Bank 1/Intake]	1,0 - 1,2	9,8 - 11,8	7,2 - 8,7
Camshaft Position Sensor (CMPS) Mounting Bolt [Bank 1/Exhaust]	1,0 - 1,2	9,8 - 11,8	7,2 - 8,7
Knock Sensor (KS) Mounting Bolt	1,9 - 2,4	18,6 - 23,5	13,7 - 17,3
Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 1]	4,0–5,0	39,2 - 49,1	28,9 - 36,2
Heated Oxygen Sensor (HO2S) [Bank 1 / Sensor 2]	4,0–5,0	39,2 - 49,1	28,9 - 36,2
Rail Pressure Sensor (RPS)	3.1 - 4.1	30,0 - 35,0	22,1 - 29,5
Accelerator Pedal Position Sensor (APS) Mounting Nut [APS is integrated into the accelerator pedal module]	1,3 - 1,6	12,7 - 15,7	9,4 - 11,6
Purge Control Solenoid Valve (PCSV) Bracket Mounting Bolt	1,0 - 1,2	9,8 - 11,8	7,2 - 8,7
CVVT Oil Control Valve (OCV) Mounting Bolt [Bank 1/Intake]	1,0 - 1,2	9,8 - 11,8	7,2 - 8,7
CVVT Oil Control Valve (OCV) Mounting Bolt [Bank 1/Exhaust]	1,0 - 1,2	9,8 - 11,8	7,2 - 8,7
Electric Wastegate Actuator (EWGA) Mounting Bolt	0,6 - 0,8	6,0 - 8,0	4,4 - 5,9
RCV Solenoid Valve Bracket Mounting Bolt	1,0 - 1,2	9,8 - 11,8	7,2 - 8,7

Fuel Delivery System

Item	kgf·m	N·m	lbf·ft
Fuel Tank Mounting Nut	4,0 - 5,5	39,2 - 54,0	28,9 - 39,8
Fuel Pump Plate Cover Mounting Bolt	0,2 - 0,3	2,0 - 2,9	1,4 - 2,2
Filler Neck Assembly Mounting Bolt	0,8 - 1,2	7,8 - 11,8	5,8 - 8,7
Filler Neck Bracket Assembly Mounting Bolt	0,8 - 1,2	7,8 - 11,8	5,8 - 8,7
Delivery Pipe and Injector Assembly Mounting Bolt	1,9 - 2,4	18,6 - 23,5	13,7 - 17,4
High Pressure Fuel Pipe Flange Nut	2,7 - 3,3	26,5 - 32,4	9,5 - 23,9
High Pressure Fuel Pipe Function Block Mounting Bolt	1,0 - 1,2	9,8 - 11,8	7,2 - 8,7
High Pressure Fuel Pump Mounting Bolt	1,3 - 1,5	12,8 - 14,7	9,4 - 10,9

Special Service Tools

Special Service Tools

Tool Name/Number	Illustration	Description
Fuel Pressure Sensor 09353-24100		Used to measure the fuel rail pressure.
Fuel Pressure Sensor Adapter 0K353-D4100		Used to connect the high-pressure fuel pump and the low-pressure fuel feed hose for measuring fuel line pressure.
Heated Oxygen Sensor Socket Wrench 09392-1Y100		Used to remove and install the heated oxygen sensor. ※ SST 09392-2H100 can also be used.
Torque Wrench Head 09314-3Q100 or 09314-27130 (19 mm)		Used for removal/installation of the high pressure fuel line.
Injector Seal Guide and Calibration Tool 09353-2B000		Used to install the injector combustion seal onto the injector.

Troubleshooting

Basic Troubleshooting Procedures

Basic Troubleshooting Procedure

Customer Problem Analysis Check Sheet

General Inspection Procedure. Resistance Measurement Conditions: Measured resistance of electronic parts at high temperature after starting the vehicle may be high or low. Therefore, all resistances must be measured at ambient temperature (20 °C, 68°F), unless otherwise specified.Intermittent Problem Inspection Procedure: Sometimes the most difficult troubleshooting case is when the problem symptom occurs but cannot be reproduced during testing. For example, if the problem appears only when the vehicle is cold, but not when it is warm. In this case, the technician must carefully complete the Customer Problem Analysis Sheet and recreate (simulate) the environment and conditions under which the vehicle had the problem.

1. 1
   Clear the Diagnostic Trouble Code (DTC).
2. 2
   Inspect the connector connection and check the terminal for poor contact, loose wire, bent, broken or corroded pins, then make sure the connectors are always securely fastened.

   

3. 3
   Gently shake the connector and wire harness vertically and horizontally.
4. 4
   Repair or replace the faulty component.
5. 5
   Perform a road test to confirm that the problem has disappeared.

● Simulate vibration

a.	Sensors and Actuators: Lightly tap the sensors, actuators or relays with your finger.

b.	Connectors and Harness: Lightly shake the connector and wiring harness in the vertical and then in the horizontal direction.

● Simulate heat

a.	Heat the components suspected of causing the malfunction using a hair dryer or other heat source.

● Simulate water spray

a.	Spray water on the vehicle to simulate rainy or high humidity conditions.

● Simulate electrical load

a.	Turn on all electrical systems to simulate excessive electrical loads (radio, fans, lights, rear window defogger, etc.).

Connector Inspection Procedure

1. 1
   Connector Handling

   a.	Never pull on the wire harness when disconnecting connectors.

   b.	When disconnecting a connector with a lock, press or pull the locking lever.

   b.	Listen for a click when connectors lock. This sound indicates that they are securely locked.

   d.	When using a tester to check continuity or measure voltage, always insert the tester probe from the wire harness side.

   e.	Check waterproof connector terminals from the connector side. Waterproof connectors cannot be accessed from the wire harness side.

2. 2
   Connector Checkpoints

   a.	With the connector connected: While holding the connector, check the connection condition and locking efficiency.

   b.	With the connector disconnected: Check for a missing terminal, crimped terminal or broken core wire by gently pulling the wire harness. Visually check for rust, contamination, deformation and bending.

   b.	Check terminal tightness: Insert a spare male terminal into the female terminal, then check the terminal tightness condition.

   d.	Lightly pull each wire to make sure all wires are secured in the terminal.

3. 3
   Connector Terminal Repair

   a.	Clean the contact points using compressed air and/or a cloth.

   b.	If contact pressure is abnormal, replace the female terminal.

4. 4
   Before removing the wire harness, check the position and clamping of the wire harness to restore it correctly.
5. 5
   Check the wiring harness for twisted, stretched, or loose harness sections.
6. 6
   Check the wiring harness for abnormally high temperature.
7. 7
   Check whether the wiring harness rotates, moves or vibrates against a sharp edge of a part.
8. 8
   Check the connection between the wire harness and any installed part.
9. 9
   If the wire harness covering is damaged, secure, repair or replace the harness.
10. 10
    Open Circuit Procedures

    • Continuity Check
    • Voltage Check

    If an open circuit occurs (as shown in [FIG. 1]), it can be located by performing Step 2 (continuity check method) or Step 3 (voltage check method), as shown below.

    

11. 11
    Continuity Check MethodSpecification (resistance): 1 Ω or less → Normal circuit; 1 MΩ or more → Open circuit

    a.

    Disconnect connectors (A) and (C) and measure the resistance between connectors (A) and (C), as shown in [FIG. 2]. In [FIG. 2], the measured resistance is above 1 MΩ for line 1 and less than 1 Ω for line 2. Specifically, the open is in line 1. (Line 2 is normal.) To find the exact break point, check the sub-section of line 1 as described in the next step.

    b.

    Disconnect connector (B) and measure the resistance between connectors (C) and (B1) and between (B2) and (A), as shown in [FIG. 3]. In this case, the measured resistance between connectors (C) and (B1) is above 1 MΩ, so there is an open circuit between terminal 1 of connector (C) and terminal 1 of connector (B1).

12. 12
    Voltage Check Method

    a.	With each connector still connected, measure the voltage between chassis ground and terminal 1 of each of connectors (A), (B) and (C), as shown in [FIG. 4]. The measured voltage of each connector is 5 V, 5 V and 0 V respectively. Therefore, there is an open circuit between connectors (C) and (B).

13. 13
    Short to Ground Check Method

    • Continuity Check with Chassis Ground

    If a short to ground occurs, as shown in [FIG. 5], the broken point can be located by performing Step 2 (continuity check method with chassis ground), as shown below.

    

14. 14
    Continuity Check Method (with Chassis Ground)Specification (resistance): 1 Ω or less → Short to ground; 1 MΩ or more → Normal circuit

    a.

    Disconnect connectors (A) and (C) and measure the resistance between connector (A) and body ground, as shown in [FIG. 6]. The measured resistance is below 1 Ω for line 1 and above 1 MΩ for line 2. Specifically, the short to ground is in line 1. (Line 2 is normal.) To find the exact break point, check the sub-section of line 1 as described in the next step.

    b.

    Disconnect connector (B) and measure the resistance between connector (A) and chassis ground and between (B1) and chassis ground, as shown in [FIG. 7]. The measured resistance between connector (B1) and chassis ground is 1 Ω or less. The short to ground is between terminal 1 of connector (C) and terminal 1 of connector (B1).

Wire Harness Inspection Procedure: Electrical Circuit Inspection Procedure ● Check for open circuit ● Check for short circuit ● Voltage drop test. This test checks the voltage drop across a wire, connection, or switch.

A.	Connect the positive lead of the voltmeter to the end of the wire (or to the connector or switch side) closest to the battery.

B.	Connect the negative lead to the other end of the wire (or the other side of the connector or switch).

C.	Operate the circuit.

D.	The voltmeter will show the voltage difference between two points. A difference or drop of more than 0.1 V (50 mV in 5 V circuits) may indicate a problem. Check the circuit for loose or dirty connections.

Symptom Troubleshooting Table

Main Symptom	Diagnostic Procedure	Also check
Cannot Start (Engine does not crank)	1 Check the battery. (Refer to Engine Electrical System - "Battery") 2 Test the starter. (Refer to Engine Electrical System - "Starter") 3 Clutch Start Switch (M/T)
Cannot Start (Incomplete combustion)	1 Check the battery. (Refer to Engine Electrical System - "Battery") 2 Check the fuel pressure 3 Check the ignition circuit. (Refer to Engine Electrical System - "Ignition System") 4 Troubleshoot the immobilizer system. (Refer to Body Electrical System - "Immobilizer System") (If the immobilizer lamp is flashing)	Trouble Code Low compression Intake air leaks Slipping or broken timing belt Contaminated Fuel
Hard to Start	1 Check the battery. (Refer to Engine Electrical System - "Battery") 2 Check the fuel pressure 3 Check the ECT sensor and circuit (check DTC) 4 Check the ignition circuit. (Refer to Engine Electrical System - "Ignition System")	Trouble Code Low compression Intake air leaks Contaminated Fuel Weak ignition spark
Poor Idling (Rough, unstable or incorrect idle)	1 Check the fuel pressure. 2 Check the injector. (Refer to Engine Control System - "Injector") 3 Check the long-term fuel trim and short-term fuel trim. (See CUSTOMER DATA FLOW) 4 Check the idle air control circuit (check DTC). 5 Inspect and check the throttle body 6 Check the ECT sensor and circuit (check DTC)	Trouble Code Low compression Intake air leaks Contaminated Fuel Weak ignition spark
Engine Stalls	1 Check the battery. (Refer to Engine Electrical System - "Battery") 2 Inspect the fuel pressure. (Refer to Fuel System - "Fuel Pressure Inspection") 3 Check the idle air control circuit (check DTC). 4 Check the ignition circuit. (Refer to Engine Electrical System - "Ignition System") 5 Check the CKPS circuit (check DTC)	Trouble Code Intake air leaks Contaminated Fuel Weak ignition spark
Poor Driveability (Surging)	1 Inspect the fuel pressure. (Refer to Fuel System - "Fuel Pressure Inspection") 2 Inspect and check the throttle body 3 Check the ignition circuit. (Refer to Engine Electrical System - "Ignition System") 4 Check the ECT sensor and circuit (check DTC) 5 Check the exhaust system for possible blockage. (Refer to Engine Mechanical System - "Turbocharger and Exhaust Manifold") 6 Check the long-term fuel trim and short-term fuel trim (refer to CUSTOMER DATA FLOW).	Trouble Code Low compression Intake air leaks Contaminated Fuel Weak ignition spark
Knock	1 Check the fuel pressure. (Refer to Fuel System - "Relieve Residual Pressure in the Fuel Line") 2 Inspect the engine coolant. (Refer to Engine Mechanical System - "Radiator") 3 Inspect the radiator and electric cooling fan system. (Refer to Engine Mechanical System - "Radiator") 4 Check the spark plugs. (Refer to Engine Electrical System - "Ignition System")	Trouble Code Contaminated Fuel
Poor Fuel Economy	1 Check the customer's driving habits: Is the air conditioner kept on constantly or the defroster mode turned on? Is the tire pressure correct? Is an excessively heavy load being carried? Is the acceleration too strong or too frequent? 2 Check the fuel pressure. (Refer to Fuel System - "Relieve Residual Pressure in the Fuel Line") 3 Check the injector. (Refer to Engine Control System - "Injector") 4 Check the exhaust system for possible blockage 5 Check the ECT sensor and circuit	Trouble Code Low compression Intake air leaks Contaminated Fuel Weak ignition spark
Hard to Refuel (Overflow during refueling)	1 Inspect the fuel tank hose/tube. · Pinched, kinked or blocked? · Torn filler hose 2 Inspect the fuel tank vapor hose between the EVAP canister and the air filter 3 Check the EVAP canister	Gas station fuel nozzle malfunction (If this problem occurs at a specific gas station during refueling)