Engine Control System - 3.8L: Diagnosis Hyundai Genesis I рестайлинг

ECM Problem Inspection Procedure

1. TEST ECM GROUND CIRCUIT: Measure resistance between ECM and chassis ground using the backside of ECM harness connector as ECM side check point. If the problem is found, repair it. Specification: Below 1ohms
2. TEST ECM CONNECTOR: Disconnect the ECM connector and visually check the ground terminals on ECM side and harness side for bent pins or poor contact pressure. If the problem is found, repair it.
3. If problem is not found in Step 1 and 2 , the ECM could be faulty. If so, replace the ECM with a new one, and then check the vehicle again. If the vehicle operates normally then the problem was likely with the ECM.
4. RE-TEST THE ORIGINAL ECM: Install the original ECM (may be broken) into a known-good vehicle and check the vehicle. If the problem occurs again, replace the original ECM with a new one. If problem does not occur, this is intermittent problem (Refer to "Intermittent Problem Inspection Procedure" in Basic Inspection Procedure).

Inspection

1. Connect the GDS on the Data Link Connector (DLC).
2. Measure the output voltage of the BPS at idle and IG ON. Specification: Refer to " «SPECIFICATION»(ref-590369-S41190040012013121700000) "

Scheme 212

1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2. Disconnect the barometric pressure sensor connector (A).
3. Remove the installation bolt (B), and then remove the sensor from the air cleaner assembly.

1. Turn the ignition switch OFF.
2. Disconnect the IATS connector.
3. Measure resistance between the IATS terminals 3 and 4.
4. Check that the resistance is within the specification. Specification: Refer to " «SPECIFICATION»(ref-590369-S14022449402013121700000) "

Scheme 213

1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2. Disconnect the manifold absolute pressure sensor connector (A).
3. Remove the installation bolts (B), and then vertically remove the sensor from the surge tank.

1. Connect the GDS on the Data Link Connector (DLC).
2. Measure the output voltage of the MAPS at idle and IG ON. Condition Output Voltage (V) IG ON Approx. 4.44V Idle Approx. 0.75V

Scheme 214

1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2. Disconnect the manifold absolute pressure sensor connector (A).
3. Remove the installation bolts (B), and then vertically remove the sensor from the surge tank.

1. Turn the ignition switch OFF.
2. Disconnect the ECTS connector.
3. Remove the ECTS (Refer to " «REMOVAL»(ref-590369-S41318792852013121700000) ").
4. After immersing the thermistor of the sensor into engine coolant, measure resistance between the ECTS terminals 3 and 4.
5. Check that the resistance is within the specification. Specification: Refer to " «SPECIFICATION»(ref-590369-S19445382572013121700000) "

Scheme 215

1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2. Remove the air cleaner assembly (Refer to " «INTAKE AND EXHAUST SYSTEM»(ref-590357) " in EM group).
3. Disconnect the engine coolant temperature sensor connector (A).
4. Remove the spring clip (B), and then pull the sensor from the water temperature control assembly. CAUTION: Note that engine coolant may be flowed out from the water temperature control assembly when removing the sensor.
5. Supplement the engine coolant (Refer to " «ENGINE COOLING SYSTEM»(ref-590355) " in EM group).

1. Check the signal waveform of the CMPS and CKPS using the GDS. Specification: Refer to " «WAVE FORM»(ref-590369-S23935714282013121700000) "

Scheme 216

1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2. Remove the air cleaner assembly (Refer to " «INTAKE AND EXHAUST SYSTEM»(ref-590357) " in EM group).
3. Disconnect the crankshaft position sensor connector (A).
4. Remove the installation bolt (B), and then vertically remove the sensor from the transaxle housing.

1. Check the signal waveform of the CMPS and CKPS using the GDS. Specification: Refer to " «WAVE FORM»(ref-590369-S12090016512013121700000) "

1. Turn the ignition switch OFF.
2. Disconnect the HO2S connector.
3. Measure resistance between the HO2S terminals 1 and 2.
4. Check that the resistance is within the specification. Specification: Refer to " «SPECIFICATION»(ref-590369-S28867074642013121700000) "

Scheme 217

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Scheme 224

1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2. Disconnect the connector (A), and then remove the sensor (B). NOTE: Note that the SST (Part No.: 09392-2H100) is useful when removing the heated oxygen sensor. [Bank 1/Sensor 1] [Bank 1/Sensor 2] [Bank 2/Sensor 1] [Bank 2/Sensor 2]

1. Connect the GDS on the Data Link Connector (DLC).
2. Measure the output voltage of the RPS at idle and various engine speed. Condition Output Voltage (V) Idle Approx. 1.2 1, 500 rpm 2.0 ~ 2.2 6, 300 rpm Approx. 2.8

Scheme 225

1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2. Release the residual pressure in fuel line (Refer to " «RELEASE RESIDUAL PRESSURE IN FUEL LINE»(ref-590370-S18993748492013121700000) " in this group). CAUTION: When removing the fuel pump relay, a Diagnostic Trouble Code (DTC) may occur. Delete the code with the GDS after completion of "Release Residual Pressure in Fuel Line" work.
3. Remove the intake manifold (Refer to " «INTAKE MANIFOLD»(ref-590357-S29578244502013121700000) " in EM group).
4. Disconnect the rail pressure sensor connector (A), and then remove the sensor (B) from the delivery pipe.

1. Turn the ignition switch OFF.
2. Disconnect the OTS connector.
3. Remove the OTS (Refer to " «REMOVAL»(ref-590369-S41618151462013121700000) ").
4. After immersing the thermistor of the sensor into engine coolant, measure resistance between the OTS terminals 1 and 2.
5. Check that the resistance is within the specification. Specification: Refer to " «SPECIFICATION»(ref-590369-S18153541352013121700000) "

Scheme 226

1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2. Remove the air cleaner assembly (Refer to " «INTAKE AND EXHAUST SYSTEM»(ref-590357) " in EM group).
3. Disconnect the connector (A), and then remove the CVVT oil temperature sensor (B).

1. Connect the GDS on the Data Link Connector (DLC).
2. Turn the ignition switch ON.
3. Measure the output voltage of the APS 1 and 2 at C.T and W.O.T. Specification: Refer to " «SPECIFICATION»(ref-590369-S05661429612013121700000) "

Scheme 227

Scheme 228

1. Turn the ignition switch OFF and disconnect the negative (-) battery cable.
2. Disconnect the accelerator position sensor connector (A).
3. Disconnect the accelerator control connector (B).
4. Remove the accelerator pedal in the direction of "Removal direction" in the figure after removing the installation bolt (B).

1. Connect the GDS on the Data Link Connector (DLC).
2. Measure the output voltage of the FTPS. Specification: Refer to " «SPECIFICATION»(ref-590369-S12559954942013121700000) "

Scheme 229

Scheme 230

1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2. Remove the floor mat in the trunk (Refer to " «SEAT & POWER SEAT»(ref-590398) " in BD group).
3. Remove the service cover (A).
4. Disconnect the fuel tank pressure sensor connector (A).
5. Remove the fuel tank pressure sensor after removing the installation bolt.

1. Turn the ignition switch OFF.
2. Disconnect the injector connector.
3. Measure resistance between the injector terminals 1 and 2.
4. Check that the resistance is within the specification. Specification: Refer to " «SPECIFICATION»(ref-590369-S41162519722013121700000) "

1. Turn the ignition switch OFF.
2. Disconnect the PCSV connector.
3. Measure resistance between the PCSV terminals 1 and 2.
4. Check that the resistance is within the specification. Specification: Refer to " «SPECIFICATION»(ref-590369-S05749793472013121700000) "

Scheme 231

1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2. Disconnect the purge control solenoid valve connector (A).
3. Disconnect the vapor hoses (B, C) from the purge control solenoid valve.
4. Remove the valve (B) from the bracket.

1. Turn the ignition switch OFF.
2. Disconnect the OCV connector.
3. Measure resistance between the OCV terminals 1 and 2.
4. Check that the resistance is within the specification. Specification: Refer to " «SPECIFICATION»(ref-590369-S39616528662013121700000) "

Scheme 232

Scheme 233

1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2. Remove the intake manifold (Refer to " «INTAKE AND EXHAUST SYSTEM»(ref-590357) " in EM group).
3. Disconnect the CVVT oil control valve connector (A).
4. Remove the installation bolt (B), and then remove the valve from the engine. [Bank 1] [Bank 2]

Scheme 234

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Scheme 237

1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2. Disconnect the CVVT oil control valve connector (A). [Bank 1] [Bank 2]
3. Remove the cylinder head cover (Refer to " «CYLINDER HEAD ASSEMBLY»(ref-590351) " in EM group).
4. Remove the installation bolt (A), and then remove the valve from the engine. [Bank 1] [Bank 2]

1. Turn the ignition switch OFF.
2. Disconnect the VIS valve connector.
3. Measure resistance between the VIS valve terminals 1 and 2.
4. Check that the resistance is within the specification. Specification: Refer to " «SPECIFICATION»(ref-590369-S20321213822013121700000) "

Scheme 238

1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2. Disconnect the variable intake solenoid valve connector (A).
3. Disconnect the vacuum hoses (B, C) from the valve.
4. Remove the installation nut (D), and then remove the valve from the surge tank.

1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2. Disconnect the fuel pressure regulator valve connector.
3. Measure resistance between the fuel pressure regulator valve terminals 1 and 2.
4. Check that the resistance is within the specification. Specification: Refer to " «SPECIFICATION»(ref-590369-S20969613732013121700000) "

1. Turn the ignition switch OFF.
2. Disconnect the CCV connector.
3. Measure resistance between the CCV terminal 1 and 2.
4. Check that the resistance is within the specification. Specification: Refer to " «SPECIFICATION»(ref-590369-S18714766402013121700000) "
5. Disconnect the vapor hose connected with the canister from the CCV.
6. Connect a vacuum pump to the nipple.
7. Ground the CCV control line and apply battery voltage to the CCV power supply line.
8. Apply vacuum and check the valve operation. Specification: Vacuum maintained

Scheme 239

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Scheme 241

1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2. Remove the service cover (A) in the trunk.
3. Disconnect the canister close valve connector (A).
4. Disconnect the ventilation hose (B) from the canister close valve.
5. Remove the CCV from the fuel tank air filter assembly after removing 2 bolts (A).