Engine Control System: Diagnosis Kia Sedona II 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»(ref-584200-S01529498442013110100000) .

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 .

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 .

1. Connect the GDS on the Data Link Connector (DLC).
2. Measure the output voltage of the MAPS at idle and IG ON.

VOLTAGE SPECIFICATION

1. Turn the ignition switch OFF.
2. Disconnect the ECTS connector.
3. Remove the ECTS. Refer to «REMOVAL»(ref-584201-S30207232472013110100000) .
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 .

Scheme 86

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-584173) .
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 «COOLING SYSTEM»(ref-584176) .

1. Check the signal waveform of the CMPS and CKPS using the GDS.

Specification: Refer to WAVE FORM .

1. Check the signal waveform of the CMPS and CKPS using the GDS.

Specification: Refer to WAVE FORM .

1. Turn the ignition switch OFF.
2. Disconnect the HO2S connector.
3. Measure resistance between the HO2S terminals 3 and 4.
4. Check that the resistance is within the specification.

Specification: Refer to SPECIFICATION .

1. Turn the ignition switch OFF.
2. Disconnect the OTS connector.
3. Remove the OTS. Refer to «REMOVAL»(ref-584201-S05234879872013110100000) .
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 .

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 .

1. Connect the GDS on the Data Link Connector (DLC).
2. Measure the output voltage of the FTPS.

Specification: Refer to SPECIFICATION .

Scheme 87

1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2. Remove the 2nd seat. Refer to «REAR SEAT»(ref-584203-S21587261872013110100000) .
3. Remove the fuel pump service cover (A).
4. Disconnect the fuel tank pressure sensor connector (A).
5. Remove the fuel tank pressure sensor (B) after removing the nuts.

Scheme 88

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 .

Scheme 89

Scheme 90

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-584204-S16745383502013110100000) . 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 surge tank. Refer to «INTAKE AND EXHAUST SYSTEM»(ref-584173) .
4. Disconnect the injector (Bank 1) connector (A). NOTE: The injector (Bank 2) connector was disconnected when removing the surge tank.
5. Remove the delivery pipe installation bolts (B).
6. Remove the installation nuts (A), and then remove the delivery pipe & injector assembly from the engine.
7. Remove the fixing clip (A), and then separate the injector (B) from the delivery pipe.

Scheme 91

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 .

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 .

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 .

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-584201-S03679915562013110100000) .
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 92

Scheme 93

1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2. Disconnect the canister close valve connector (A).
3. Disconnect the ventilation tube (B).
4. Remove the canister close valve.