Contents Section: Testing & Diagnostics All sections

General Information - Fuel System - g2.4 DOHC Hyundai Santa Fe II рестайлинг

Testing & Diagnostics 20 illustrations ~2166 words

Fuel Delivery System

ItemsSpecification
Fuel TankCapacity68 lit. (18.0 U.S.gal., 71.9 U.S.qt., 59.8 lmp.qt.)
Fuel FilterTypePaper type
Fuel Pressure RegulatorRegulated Fuel Pressure324 ~ 363 kPa (3.3 ~ 3.7 kgf/cm 2 , 46.9 ~ 52.6 psi)
Fuel PumpTypeElectrical, in-tank type
Driven byElectric motor

FUEL DELIVERY SYSTEM SPECIFICATIONS

Sensors

Manifold Absolute Pressure Sensor (MAPS)

  1. Type: Piezo-resistive pressure sensor type
  2. Specification MANIFOLD ABSOLUTE PRESSURE SENSOR SPECIFICATIONS Pressure (kPa) Output Voltage (V) 20.0 0.79 46.7 1.84 101.3 4.0

Intake Air Temperature Sensor (IATS)

  1. Type: Thermistor type
  2. Specification INTAKE AIR TEMPERATURE SENSOR SPECIFICATIONS Temperature [°C(°F)] Resistance (kohms) -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

Engine Coolant Temperature Sensor (ECTS)

  1. Type: Thermistor type
  2. Specification ENGINE COOLANT TEMPERATURE SENSOR SPECIFICATIONS Temperature [°C(°F)] Resistance (kohms) -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) [integrated into ETC Module]

  1. Type: Variable resistor type
  2. Specification THROTTLE POSITION SENSOR SPECIFICATIONS Throttle Angle(°) Output Voltage (V) TPS1 TPS2 0 0 5.0 10 0.48 4.52 20 0.95 4.05 30 1.43 3.57 40 1.90 3.10 50 2.38 2.62 60 2.86 2.14 70 3.33 1.67 80 3.81 1.19 90 4.29 0.71 100 4.76 0.24 105 5.0 0 C.T (6~15°) 0.29 ~ 0.71 4.29 ~ 4.71 W.O.T (93~102°) 4.43 ~ 4.86 0.14 ~ 0.57 THROTTLE POSITION SENSOR SPECIFICATIONS Item Resistance (kohms) TPS1 0.875 ~ 1.625 [20°C (68°F)] TPS2 0.875 ~ 1.625 [20°C (68°F)]

Crankshaft Position Sensor (CKPS)

  1. Type: Hall effect type

Camshaft Position Sensor (CMPS)

  1. Type: Hall effect type

Knock Sensor (KS)

  1. Type: Piezo-electricity type
  2. Specification KNOCK SENSOR SPECIFICATIONS Item Specification Capacitance (pF) 850 ~ 1, 150

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

  1. Type: Zirconia (ZrO2) [Linear] Type
  2. Specification HEATED OXYGEN SENSOR (BANK 1/SENSOR 1) SPECIFICATIONS Item Specification Heater Resistance (ohms) 2.5 ~ 4.0 [20°C (69.8°F)]

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

  1. Type: Zirconia (ZrO2) [Binary] Type
  2. Specification HEATED OXYGEN SENSOR (BANK 1/SENSOR 2) SPECIFICATIONS A/F Ratio (lambda) Output Voltage (V) RICH Approx. 0.9 LEAN Approx. 0.04 HEATED OXYGEN SENSOR (BANK 1/SENSOR 2) SPECIFICATIONS Item Specification Heater Resistance (ohms) 3.3 ~ 4.1 [21°C (69.8°F)]

Accelerator Position Sensor (APS)

  1. Type: Variable resistor type
  2. Specification ACCELERATOR POSITION SENSOR SPECIFICATIONS Accelerator Position Output Voltage (V) APS1 APS2 C.T 0.7 ~ 0.8 0.29 ~ 0.46 W.O.T 3.85 ~ 4.35 1.93 ~ 2.18

Fuel Tank Pressure Sensor (FTPS)

  1. Type: Piezo - Resistivity type
  2. Specification FUEL TANK PRESSURE SENSOR SPECIFICATIONS Pressure (kPa) Output Voltage (V) -3.75 4.4 ~ 4.6 0 1.4 ~ 1.6 +1.25 0.4 ~ 0.6

Actuators

Injector

  1. Specification INJECTOR SPECIFICATIONS Item Specification Coil Resistance (ohms) 13.8 ~ 15.2 [20°C (68°F)]

ETC Motor [integrated into ETC Module]

  1. Specification ETC MOTOR SPECIFICATIONS Item Specification Coil Resistance (ohms) 1.2 ~ 1.8 [20°C (68°F)]

Purge Control Solenoid Valve (PCSV)

  1. Specification PURGE CONTROL SOLENOID VALVE SPECIFICATIONS Item Specification Coil Resistance (ohms) 19.0 ~ 22.0 [20°C (68°F)]

CVVT Oil Control Valve (OCV)

  1. Specification CVVT OIL CONTROL VALVE SPECIFICATIONS Item Specification Coil Resistance (ohms) 6.9 ~ 7.9 [20°C (68°F)]

Variable Intake Solenoid (VIS) Valve

  1. Specification VARIABLE INTAKE SOLENOID VALVE SPECIFICATIONS Item Specification Coil Resistance (ohms) 30.0 ~ 35.0 [20°C (68°F)]

Variable Charge Motion Actuator (VCMA)

  1. Specification [Motor] VARIABLE CHARGE MOTION ACTUATOR SPECIFICATIONS Item Specification Coil Resistance (ohms) 3.4 ~ 4.4 [20°C (68°F)]

[Position Sensor]

ItemSpecification
Coil Resistance (kohms)3.44 ~ 5.16 [20°C (68°F)]

POSITION SENSOR SPECIFICATIONS

Ignition Coil

  1. Type: Stick type
  2. Specification IGNITION COIL SPECIFICATIONS Item Specification Primary Coil Resistance (ohms) 0.62 ± 10[][20°C (68°F)] Secondary Coil Resistance (kohms) 7.0 ± 15[][20°C (68°F)]

Canister Close Valve (CCV)

  1. Specification CANISTER CLOSE VALVE SPECIFICATIONS Item Specification Coil Resistance (ohms) 19.8 ~ 21.8 [20°C (68°F)]

Service Standard

ItemSpecification
Ignition Timing (°)BTDC 5 ± 10
Idle Speed (rpm)A/C OFFNeutral, N, P-range680 ± 100
D-range620 ± 100
A/C ONNeutral, N, P-range680 ± 100
D-range650 ± 100

SERVICE STANDARD

Engine Control System

ItemKgf.mN.m
ECM installation bolt0.8 ~ 1.27.8 ~ 11.8
Manifold absolute pressure sensor installation bolt1.0 ~ 1.29.8 ~ 11.8
Crankshaft position sensor installation bolt1.0 ~ 1.29.8 ~ 11.8
Crankshaft position sensor protector installation bolt (M8)1.9 ~ 2.418.6 ~ 23.5
Crankshaft position sensor protector installation bolt (M6)1.0 ~ 1.29.8 ~ 11.8
Camshaft position sensor (Bank 1/Intake) installation bolt1.0 ~ 1.29.8 ~ 11.8
Camshaft position sensor (Bank 1/Exhaust) installation bolt1.0 ~ 1.29.8 ~ 11.8
Knock sensor installation bolt1.9 ~ 2.418.6 ~ 23.5
Heated oxygen sensor (Bank 1/sensor 1) installation4.0 ~ 5.039.2 ~ 49.1
Heated oxygen sensor (Bank 1/sensor 2) installation4.0 ~ 5.039.2 ~ 49.1
Electronic throttle body installation bolt0.8 ~ 1.27.8 ~ 11.8
Purge control solenoid valve bracket installation bolt1.0 ~ 1.29.8 ~ 11.8
CVVT oil control valve (Bank 1/Intake) installation bolt1.0 ~ 1.29.8 ~ 11.8
CVVT oil control valve (Bank 1/Exhaust) installation bolt1.0 ~ 1.29.8 ~ 11.8
Variable charge motion actuator installation bolt0.4 ~ 0.63.9 ~ 5.9
Ignition coil installation bolt1.0 ~ 1.29.8 ~ 11.8

ENGINE CONTROL SYSTEM TIGHTENING TORQUE SPECIFICATIONS

ItemKgf.mN.m
Fuel tank installation nut4.0 ~ 5.539.2 ~ 54.0
Filler-neck assembly bracket installation nut0.4 ~ 0.63.9 ~ 5.9
Accelerator pedal module installation nut1.7 ~ 2.616.7 ~ 25.5
Delivery pipe installation bolt1.9 ~ 2.418.6 ~ 23.5
Delivery pipe installation nut (<--> Fuel feed tube)0.8 ~ 1.07.8 ~ 9.8

FUEL DELIVERY SYSTEM TIGHTENING TORQUE SPECIFICATIONS

Special Service Tools

SPECIAL SERVICE TOOLS Tool (Number and Name) Illustration Application Fuel Pressure Gauge (09353-24100) Measuring the fuel line pressure Fuel Pressure Gauge Adapter (09353-38000) Connection between the delivery pipe and the fuel feed line Fuel Pressure Gauge Connector (09353-24000) Connection between the Fuel Pressure Gauge (09353-24100) and the Fuel Pressure Gauge Adapter (09353-38000) Heated Oxygen Sensor Socket Wrench (09392-2H100) Removal and installation of the heated oxygen sensor

Scheme 42

Scheme 42: Special Service Tools

Scheme 43

Scheme 43

Scheme 44

Scheme 44

Scheme 45

Scheme 45

Basic Troubleshooting Guide

  1. Bring Vehicle to Workshop
  2. Analyze Customer's Problem Ask the customer about the conditions and environment relative to the issue (Use CUSTOMER PROBLEM ANALYSIS SHEET).
  3. Verify Symptom, and then Check DTC and Freeze Frame Data Connect the GDS to Diagnostic Link Connector (DLC). Record the DTC and freeze frame data. NOTE: To erase DTC and freeze frame data, refer to Step 5 .
  4. Confirm the Inspection Procedure for the System or Part Using the SYMPTOM TROUBLESHOOTING GUIDE CHART, choose the correct inspection procedure for the system or part to be checked.
  5. Erase the DTC and Freeze Frame Data WARNING: NEVER erase DTC and freeze frame data before completing Step 2 MIL/DTC in "CUSTOMER PROBLEM ANALYSIS SHEET".
  6. Inspect Vehicle Visually Go to Step 11 if you recognize the problem.
  7. Recreate (Simulate) Symptoms of the DTC Try to recreate or simulate the symptoms and conditions of the malfunction as described by customer. If DTC(s) is/are displayed, simulate the condition according to troubleshooting procedure for the DTC.
  8. Confirm Symptoms of Problem If DTC(s) is/are not displayed, go to Step 9. If DTC(s) is/are displayed, go to Step 11 .
  9. Recreate (Simulate) Symptom Try to recreate or simulate the condition of the malfunction as described by the customer.
  10. Check the DTC If DTC(s) does (do) not occur, refer to INTERMITTENT PROBLEM PROCEDURE in «BASIC INSPECTION PROCEDURE»(/hyundai/santa-fe/ii-2010-2012/remont/testing-diagnostics/#general-information-fuel-system-g24-dohc__basic-inspection-procedure) . If DTC(s) occur(s), go to Step 11.
  11. Perform troubleshooting procedure for DTC
  12. Adjust or repair the vehicle
  13. Confirmation test
  14. END

Scheme 46

Scheme 46: Customer Problem Analysis Sheet

Basic Inspection Procedure

Measuring Condition of Electronic Parts' Resistance

The measured resistance at high temperature after vehicle running may be high or low. So all resistance must be measured at ambient temperature (20°C, 68°F), unless stated otherwise.

Note. The measured resistance in except for ambient temperature (20°C, 68°F) is reference value.

Intermittent Problem Inspection Procedure

Sometimes the most difficult case in troubleshooting is when a problem symptom occurs but does not occur again 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.

Scheme 47

Scheme 47: Basic Inspection Procedure
  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 Sensors and Actuators : Slightly vibrate sensors, actuators or relays with finger. WARNING: Strong vibration may break sensors, actuators or relays Connectors and Harness : Lightly shake the connector and wiring harness vertically and then horizontally. Simulating Heat Heat components suspected of causing the malfunction with a hair dryer or other heat source. WARNING: DO NOT heat components to the point where they may be damaged. DO NOT heat the ECM directly. Simulating Water Sprinkling Sprinkle water onto vehicle to simulate a rainy day or a high humidity condition. WARNING: DO NOT sprinkle water directly into the engine compartment or electronic components. Simulating Electrical Load Turn on all electrical systems to simulate excessive electrical loads (Radios, fans, lights, rear window defogger, etc.).

Scheme 48

Scheme 48: Connector Inspection Procedure

Scheme 49

Scheme 49

Scheme 50

Scheme 50

Scheme 51

Scheme 51

Scheme 52

Scheme 52

Scheme 53

Scheme 53
  1. Handling of Connector Never pull on the wiring harness when disconnecting connectors. When removing the connector with a lock, press or pull locking lever. Listen for a click when locking connectors. This sound indicates that they are securely locked. When a tester is used to check for continuity, or to measure voltage, always insert tester probe from wire harness side. Check waterproof connector terminals from the connector side. Waterproof connectors cannot be accessed from harness side. NOTE: Use a fine wire to prevent damage to the terminal. Do not damage the terminal when inserting the tester lead.
  2. Checking Point for Connector While the connector is connected: Hold the connector, check connecting condition and locking efficiency. When the connector is disconnected: Check missed terminal, crimped terminal or broken core wire by slightly pulling the wire harness. Visually check for rust, contamination, deformation and bend. Check terminal tightening condition: Insert a spare male terminal into a female terminal, and then check terminal tightening conditions. Pull lightly on individual wires to ensure that each wire is secured in the terminal.
  3. Repair Method of Connector Terminal Clean the contact points using air gun and/or shop rag. NOTE: Never use sand paper when polishing the contact points, otherwise the contact point may be damaged. In case of abnormal contact pressure, replace the female terminal.

Wire Harness Inspection Procedure

  1. Before removing the wire harness, check the wire harness position and crimping in order to restore it correctly.
  2. Check whether the wire harness is twisted, pulled or loosened.
  3. Check whether the temperature of the wire harness is abnormally high.
  4. Check whether the wire harness is rotating, moving or vibrating against the sharp edge of a part.
  5. Check the connection between the wire harness and any installed part.
  6. If the covering of wire harness is damaged; secure, repair or replace the harness.

Scheme 54

Scheme 54: Electrical Circuit Inspection Procedure

Scheme 55

Scheme 55

Scheme 56

Scheme 56

Scheme 57

Scheme 57
  1. Check Open Circuit Procedures for Open Circuit Continuity Check Voltage Check If an open circuit occurs (as seen in [ (Scheme 50) ]), it can be found by performing Step 2 (Continuity Check Method) or Step 3 (Voltage Check Method) as shown below. Continuity Check Method NOTE: When measuring for resistance, lightly shake the wire harness above and below or from side to side. Specification (Resistance) 1ohms or less --> Normal Circuit 1Mohms or Higher --> Open Circuit Disconnect connectors (A), (C) and measure resistance between connector (A) and (C) as shown in [ (Scheme 51) ]. In [ (Scheme 51).] the measured resistance of line 1 and 2 is higher than 1Mohms and below 1 ohms respectively. Specifically the open circuit is line 1 (Line 2 is normal). To find exact break point, check sub line of line 1 as described in next step. Disconnect connector (B), and measure for resistance between connector (C) and (B1) and between (B2) and (A) as shown in [ (Scheme 52) ]. In this case the measured resistance between connector (C) and (B1) is higher than 1Mohms and the open circuit is between terminal 1 of connector (C) and terminal 1 of connector (B1). Voltage Check Method With each connector still connected, measure the voltage between the chassis ground and terminal 1 of each connectors (A), (B) and (C) as shown in [ (Scheme 53) ]. The measured voltage of each connector is 5V, 5V and 0V respectively. So the open circuit is between connector (C) and (B).

Scheme 58

Scheme 58: Check Short Circuit

Scheme 59

Scheme 59

Scheme 60

Scheme 60
  1. Test Method for Short to Ground Circuit Continuity Check with Chassis Ground If short to ground circuit occurs as shown in [ (Scheme 54) ], the broken point can be found by performing Step 2 (Continuity Check Method with Chassis Ground) as shown below.
  2. Continuity Check Method (with Chassis Ground) NOTE: Lightly shake the wire harness above and below, or from side to side when measuring the resistance. Specification (Resistance) 1ohms or less --> Short to Ground Circuit 1Mohms or Higher --> Normal Circuit Disconnect connectors (A), (C) and measure for resistance between connector (A) and Chassis Ground as shown in [ (Scheme 55) ]. The measured resistance of line 1 and 2 in this example is below 1 ohms and higher than 1Mohms respectively. Specifically the short to ground circuit is line 1 (Line 2 is normal). To find exact broken point, check the sub line of line 1 as described in the following step. Disconnect connector (B), and measure the resistance between connector (A) and chassis ground, and between (B1) and chassis ground as shown in [ (Scheme 56) ]. The measured resistance between connector (B1) and chassis ground is 1ohms or less. The short to ground circuit is between terminal 1 of connector (C) and terminal 1 of connector (B1).

Testing For Voltage Drop

This test checks for voltage drop along a wire, or through a connection or switch.

Scheme 61

Scheme 61: Testing For Voltage Drop
  1. Connect the positive lead of a voltmeter to the end of the wire (or to the side of the connector or switch) closest to the battery.
  2. Connect the negative lead to the other end of the wire. (or the other side of the connector or switch)
  3. Operate the circuit.
  4. The voltmeter will show the difference in voltage between the two points. A difference, or drop of more than 0.1 volts (50mV in 5V circuits), may indicate a problem. Check the circuit for loose or dirty connections.

Symptom Troubleshooting Guide Chart

Main symptomDiagnostic procedureAlso check for
Unable to start (Engine does not turn over)Test the battery Test the starter Inhibitor switch (A/T) or clutch start switch (M/T)
Unable to start (Incomplete combustion)Test the battery Check the fuel pressure Check the ignition circuit Troubleshooting the immobilizer system (In case of immobilizer lamp flashing)DTC Low compression Intake air leaks Slipped or broken timing belt Contaminated fuel
Difficult to startTest the battery Check the fuel pressure Check the ECT sensor and circuit (Check DTC) Check the ignition circuitDTC Low compression Intake air leaks Contaminated fuel Weak ignition spark
Poor idling (Rough, unstable or incorrect Idle)Check the fuel pressure Check the Injector Check the long term fuel trim and short term fuel trim (Refer to CUSTOMER DATASTREAM ) Check the idle speed control circuit (Check DTC) Inspect and test the Throttle Body Check the ECT sensor and circuit (Check DTC)DTC Low compression Intake air leaks Contaminated fuel Weak ignition spark
Engine stallTest the Battery Check the fuel pressure Check the idle speed control circuit (Check DTC) Check the ignition circuit Check the CKPS Circuit (Check DTC)DTC Intake air leaks Contaminated fuel Weak ignition spark
Poor driving (Surge)Check the fuel pressure Inspect and test Throttle Body Check the ignition circuit Check the ECT Sensor and Circuit (Check DTC) Test the exhaust system for a possible restriction Check the long term fuel trim and short term fuel trim (Refer to CUSTOMER DATASTREAM )DTC Low compression Intake air leaks Contaminated fuel Weak ignition spark
KnockingCheck the fuel pressure Inspect the engine coolant Inspect the radiator and the electric cooling fan Check the spark plugsDTC Contaminated fuel
Poor fuel economyCheck customer's driving habits Is A/C on full time or the defroster mode on? Are tires at correct pressure? Is excessively heavy load being carried? Is acceleration too much, too often? Check the fuel pressure Check the injector Test the exhaust system for a possible restriction Check the ECT sensor and circuitDTC Low compression Intake air leaks Contaminated fuel Weak ignition spark
Hard to refuel (Overflow during refueling)Test the canister close valve Inspect the fuel filler hose/pipe Pinched, kinked or blocked? Filler hose is torn Inspect the fuel tank vapor vent hose between the EVAP. canister and air filter Check the EVAP. canisterMalfunctioning gas station filling nozzle (If this problem occurs at a specific gas station during refueling)

SYMPTOM TROUBLESHOOTING GUIDE