Engine Control System/Fuel System

Service Data

Service Data

Fuel Delivery System

Items	Specification
Fuel tank	Capacity	50 L (13.2 US gal, 52.8 US qt, 43.9 Imp qt)
Fuel filter	Type	Paper Type
Fuel Pressure	Low Pressure Fuel Hose	More than 500 kPa (more than 5.0 bar, more than 5.09 kgf/cm², more than 72.51 psi)
	High Pressure Fuel Hose	2.0–20.0 MPa (20.4–203.9 kgf/cm², 290.1–2900.7 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

Manifold Absolute Pressure Sensor (MAPS)

▷ Type: Piezoresistive pressure sensor

▷ Specifications

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

Intake Air Temperature Sensor (IATS)

▷ Type: Thermistor Type

▷ Specifications

Temperature		Resistance (kOhm)
°C	°F
-40	-40	40,93 - 48,35
-20	-4	13.89 - 16.03
0	32	5.38 - 6.09
10	50	3,48 - 3,90
20	68	2,31 - 2,57
40	104	1,08 - 1,21
50	122	1,56 - 1,74
60	140	0,54 - 0,62
80	176	0,29 - 0,34

Ambient Temperature Sensor (ATS)

▷ Type: Thermistor Type

▷ Specifications

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)

▷ Type: Piezoresistive pressure sensor

▷ Specifications

Pressure [kPa (kgf/cm², psi)]	Resistance (kOhm)
32,5 (0,33, 4,71)	0,5
284 (2,90, 41,19)	4,5

Engine Coolant Temperature Sensor (ECTS)

▷ Type: Thermistor Type

▷ Specifications

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

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

▷ Type: Non-contact Hall IC sensor

▷ Specifications

Throttle Angle (°)	Output voltage (V)
	TP1	TP2
0	0,5	4,5
10	0,96	4.05
20	1,41	3,59
30	1,87	3.14
40	2,32	2,68
50	2,78	2,23
60	3,23	1,77
70	3,69	1,32
80	4.14	0,86
90	4.6	0,41
98	4,65	0,35
THA (0)	0,5	4,5
THW (86)	4.41	0,59

Crankshaft Position Sensor (CKPS)

▷ Type: Magnetic field sensitive

▷ Specifications

Item	Specification
Coil Resistance (Ω)	774–946 [20 °C]

Camshaft Position Sensor (CMPS)

▷ Type: Hall Effect

Knock Sensor (KS)

▷ Type: Piezoelectric type

▷ Specifications

Item	Specification
Resistance (MΩ)	4,87

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

▷ Type: Zirconia (ZrO2) [Linear] type

▷ Specifications

Item	Specification
Heater Resistance (Ω)	2,4–4,0 [20 °C]

Heated Oxygen Sensor (HO2S) [Bank 1/Sensor 2]

▷ Type: Zirconia (ZrO2) [Binary] type

▷ Specifications

A/F Ratio (λ)	Output voltage (V)
RICH	0,6 - 1,0
LEAN	0 - 0,4

Item	Specification
Heater Resistance (Ω)	approx. 9.0 [20 °C]

Rail Pressure Sensor (RPS)

▷ Type: Piezoelectric type

▷ Specifications

Accelerator Pedal Position Sensor (APS)

▷ Type: Variable resistor

▷ Specifications

Accelerator Position	Output voltage (V)
	VPA1	VPA2
THA	0,7 - 0,8	0,33 - 0,43
THW	3,98 - 4,22	1,93 - 2,17

Actuators

Injector

▷ Specifications

Item	Specification
Coil Resistance (Ω)	1,5 ± 0,075 [20 °C]

ETC Motor [built into ETC module]

▷ Specifications

Item	Specification
Coil Resistance (Ω)	1,38 [20 °C]

Purge Control Solenoid Valve (PCSV)

▷ Specifications

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

CVVT Oil Control Valve (OCV)

▷ Specifications

Item	Specification
Coil Resistance (Ω)	6,9–7,9 [20 °C]

Fuel Pressure Control Valve (FPCV)

▷ Specifications

Item	Specification
Coil Resistance (Ω)	0,5 [20 °C]

Ignition Coil

▷ Type: Rod

▷ Specifications

Item	Specification
Primary Winding Resistance (Ω)	0,56 ± 10% [20 °C]
Secondary Winding Resistance (kΩ)	2,0 ± 15% [20 °C]

RCV Control Solenoid

▷ Specifications

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

Electric Wastegate Actuator (EWGA)

▷ Specifications

Item		Specification
Motor ,	Supply Voltage (V)	13,5
	Supply Voltage Range (V)	9 - 16
	Max. Current (A)	< 8,5
	Type	DC motor
Sensor	Type	Hall effect, non-contact
	Supply Voltage (V)	4,9 - 5,1
Pin		6

Service Standard

Item		Specification
Ignition Timing (°)		TDC 2 ± 10
Idle Speed (rpm)	A/C OFF	Neutral, N, P Range	630 ± 100
		D Range	630 ± 100
	A/C ON	Neutral, N, P Range	630 ± 100
		D Range	630 ± 100

Tightening Torque

Tightening torque

Engine Control System

Item	kgf·m	N·m	lbf·ft
ECM Mounting Nut	1,0 - 1,2	9,8 - 11,8	7,2 - 8,7
ECM Bracket Mounting Bolt	1,0 - 1,2	9,8 - 11,8	7,2 - 8,7
Manifold Absolute Pressure Sensor Mounting Bolt	1,0 - 1,2	9,8 - 11,8	7,2 - 8,7
Intake Air Temperature Sensor Mounting Bolt	1,0 - 1,2	9,8 - 11,8	7,2 - 8,7
Boost Pressure Sensor Mounting Bolt	1,0 - 1,2	9,8 - 11,8	7,2 - 8,7
Engine Coolant Temperature Sensor Installation	2,0 - 4,0	19,6 - 39,2	14,4 - 28,9
Crankshaft Position Sensor Mounting Bolt	0,8 - 1,2	7,8 - 11,8	5,8 - 8,7
Camshaft Position Sensor Mounting Bolt (Bank 1/Intake)	0,8 - 1,2	7,8 - 11,8	5,8 - 8,7
Camshaft Position Sensor Mounting Bolt (Bank 1/Exhaust)	0,8 - 1,2	7,8 - 11,8	5,8 - 8,7
Knock Sensor Mounting Bolt	1,9 - 2,5	18,6 - 24,5	13,7 - 18,1
Heated Oxygen Sensor Installation (Bank 1 / Sensor 1)	4,0–5,0	39,2 - 49,1	28,9 - 36,2
Heated Oxygen Sensor Installation (Bank 1 / Sensor 2)	4,0–5,0	39,2 - 49,1	28,9 - 36,2
Rail Pressure Sensor Installation	3,0 - 3,5	29,4 - 34,3	21,7 - 25,3
Electronic Throttle Body Mounting Bolt	1,0 - 1,2	9,8 - 11,8	7,2 - 8,7
Purge VSV Bracket Mounting Bolt	1,0 - 1,2	9,8 - 11,8	7,2 - 8,7
CVVT Oil Control Valve Mounting Bolt (Bank 1/Intake)	1,0 - 1,2	9,8 - 11,8	7,2 - 8,7
CVVT Oil Control Valve Mounting Bolt (Bank 1/Exhaust)	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
Filler Neck Bracket Mounting Bolt	0,9 - 1,0	8,8 - 9,8	6,5 - 7,2
Accelerator Pedal Module Mounting Nut	1,3 - 1,6	12,8 - 15,6	9,4 - 11,5
Delivery Pipe Mounting Bolt	1,9 - 2,4	18,6 - 23,5	13,7 - 17,4
High Pressure Fuel Pump Mounting Bolt	1,3 - 1,5	12,8 - 14,7	9,4 - 10,9
High Pressure Fuel Hose Mounting Nut	2,7 - 3,3	26,5 - 32,4	19,5 - 23,9
High Pressure Fuel Pipe Function Block Mounting Bolt	1,0 - 1,2	9,8 - 11,8	7,2 - 8,7

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 pipe for measuring fuel rail 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

Basic Inspection Procedure

Electronic Component Resistance Measurement Conditions

Measured resistance may be high or low when the vehicle is at high temperature after driving. Therefore, all resistance values must be measured at ambient temperature (20 °C, 68°F) unless otherwise specified.

Intermittent Problem Inspection Procedure

Sometimes the most difficult case in troubleshooting is when the 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 should carefully complete the Customer Problem Analysis Sheet and try to recreate (simulate) the environment and conditions present when the problem occurred.

1. 1

   Clear the Diagnostic Trouble Code (DTC).

2. 2

   Inspect the connector and check the terminals for poor contact, loose wires, bent, broken or corroded contacts, then make sure all 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

   Confirm that the problem is resolved by performing a road test.

● Simulate vibration

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

b.	Connectors and Harness : Lightly shake the connector and wiring harness vertically, then horizontally.

● 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 a rainy day or high humidity condition.

● Simulate electrical load

a.	Turn on all electrical systems to simulate excessive electrical load (radio, fans, headlights, 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 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.	While the connector is connected: While holding the connector, check the connection condition and lock effectiveness.

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

   b.	Check the terminal tightening condition: Insert a spare plug into the socket, then check the terminal tightening condition.

   d.	Gently pull on individual wires to make sure each wire is secured in the terminal.

3. 3

   Connector Terminal Repair Method

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

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

Wiring Harness Inspection Procedure

1. 1

   Before removing the harness, check the harness position and clamps so that it can be reinstalled correctly.

2. 2

   Check that the wire harness is not twisted, stretched or loose.

3. 3

   Check that the wire harness is not exposed to excessive temperature.

4. 4

   Check whether the harness is rotating, moving, or vibrating, or whether it contacts a sharp edge of a part.

5. 5

   Check the connection between the wire harness and any installed part.

6. 6

   If the harness covering is damaged, secure, repair or replace the harness.

Electrical Circuit Inspection Procedure

● Check for open circuit

1. 1

   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 in the figures below.

   

2. 2

   Continuity Check Method

   Specification (Resistance)

   1 Ω or less → Normal circuit

   1 MΩ or more → Open circuit

   a.

   Disconnect connectors (A) and (C), then measure the resistance between connector (A) and (C), as shown in [FIG. 2]. In [FIG. 2], the measured resistance of lines 1 and 2 is more than 1 MΩ and less than 1 Ω, respectively. Therefore, the open circuit is line 1 (line 2 is normal). To find the exact break point, check the sub-line of line 1 as described in the next step.

   b.

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

3. 3

   Voltage Check Method

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

● Check for short circuit

1. 1

   Short to Ground Check Method

   • Continuity Check with Chassis Ground

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

   

2. 2

   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), then measure the resistance between connector (A) and body ground, as shown in [FIG. 6]. In this example, the measured resistance of lines 1 and 2 is less than 1 Ω and more than 1 MΩ, respectively. Therefore, the short to ground is line 1 (line 2 is normal). To find the exact damaged point, check the sub-line 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. There is a short to ground between terminal 1 of connector (C) and terminal 1 of connector (B1).

● Voltage Drop Test

This test checks the voltage drop across a wire or through a connection or switch.

A.	Connect the positive lead of the voltmeter to the end of the wire (or 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 display 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 motor. (Refer to Engine Electrical System - Starter Motor) 3 Inhibitor switch (A/T) or clutch start switch (M/T)
Cannot Start (Incomplete combustion)	1 Check the battery. (Refer to Engine Electrical System - Battery) 2 Check the fuel pressure (Refer to Fuel Delivery System - Fuel Pressure Inspection) 3 Check the ignition circuit. (Refer to Engine Electrical System - Ignition System) 4 Immobilizer System Troubleshooting (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 (Refer to Fuel Delivery System - Fuel Pressure Inspection) 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. (Refer to Fuel Delivery System - Fuel Pressure Inspection) 2 Check the injector. (Refer to Engine Control System - Injector) 3 Check the long-term fuel trim and short-term fuel trim. (Refer to 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 Check the fuel pressure. (Refer to Fuel Delivery 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 Check the fuel pressure. (Refer to Fuel Delivery 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 Inspect the exhaust system for possible blockage. (Refer to Engine Mechanical System - "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 Delivery System - Fuel Pressure Inspection) 2 Inspect the engine coolant. (Refer to Engine Mechanical System - Radiator) 3 Inspect the radiator and the electric cooling fan. (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 running continuously or is the defroster mode on? · Is the tire pressure correct? · Is an excessively heavy load being carried? · Is acceleration too strong or too frequent? 2 Check the fuel pressure. (Refer to Fuel Delivery System - Fuel Pressure Inspection) 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. · Is it pinched, kinked, or blocked? · Is the filler hose torn? 2 Inspect the fuel tank vapor hose between the EVAP canister and the air filter 3 Check the EVAP canister	Defective fuel filler nozzle at gas station (If this problem occurs at a specific gas station during refueling)