Engine Controls - System & Component Testing: Other Kia Spectra I рестайлинг

IDLE AIR CONTROL VALVE

Note. Only component testing procedure is covered. For Idle Air Control (IAC) valve system and circuit testing procedure, see appropriate SELF-DIAGNOSTICS article.

Turn ignition off. Disconnect Idle Air Control (IAC) valve 3-pin harness connector for Optima & Magentis (Canadian), Rio, Spectra and Sportage, and 6-pin harness connector for Sedona. For IAC valve location see scheme 1- (Scheme 50). Check resistance between IAC valve terminals. For IAC valve terminal identification and resistance specification. (Scheme 51) See IDLE AIR CONTROL VALVE RESISTANCES table. If resistances are not as specified, replace IAC valve. For IAC valve removal and installation, see IDLE AIR CONTROL VALVE under AIR INDUCTION SYSTEM in REMOVAL, OVERHAUL & INSTALLATION article.

Scheme 50

IDLE AIR CONTROL VALVE RESISTANCES

ENGINE CONTROL MODULE

Note. Engine Control Module (ECM), can also be referred to as Powertrain Control Module (PCM). For ECM location. see scheme 1- (Scheme 50).

Note. For ECM removal and installation, see ENGINE CONTROL MODULE under COMPUTERIZED ENGINE CONTROLS in REMOVAL, OVERHAUL & INSTALLATION article.

1. Using a Digital Volt-ohmmeter (DVOM), check for ignition power, battery power, and ground at terminals listed in table by application. Turn ignition on. Check for ignition voltage at ECM power terminals. Turn ignition off. Check for battery voltage between ECM power and ground terminals. For ECM connectors and terminals identification. (Scheme 52)- (Scheme 58) and for ECM ignition power, battery power and ground terminals, see «ECM POWER & GROUND TERMINALS»(ref-133266-S13551001612002022000000) table. ECM POWER & GROUND TERMINALS Model (1) Terminals No. Optima & Magentis (Canadian) 2.4L (A/T) Battery Power B26 Ignition Power B1, B7, C7, C19, C28 Ground B2, B8, C6, C18, C27 Optima & Magentis (Canadian) 2.4L (M/T) Battery Power D10 Ignition Power A12, A25, D12 Ground A13, A26, D21 Optima & Magentis (Canadian) 2.7L Battery Power V7 Ignition Power V1, V8, V9 Ground V4, V5, V6, Z5 Rio Battery Power (B01) 7 Ignition Power (B01) 1, 8, 9 Ground (B01) 4, 5, 6 Sedona Battery Power B18 Ignition Power B4, B6, B17, C1, C8, C20 Ground B5, B16, C2, C9, C21 Spectra Battery Power 12 Ignition Power 13, 45 Ground 3, 51, 61, 74, 78, 80 Sportage (A/T) Battery Power 26 Ignition Power 54, 58, 86 Ground 6, 28, 34, 55, 72 Sportage (M/T) Battery Power 26 Ignition Power 54, 58 Ground 6, 28, 34, 55, 86 (1) For circuit identification, see WIRING DIAGRAMS article. For connector views (Scheme 52)- (Scheme 58).
2. If battery voltage is not present, check appropriate fuses. Check ECM B+ fuses, FUEL INJ fuses and IGN COILS fuses in engine or passenger compartment fuse/relay boxes. Replace fuse(s) as necessary and check for cause of blown fuse. If fuses are okay, check EGI main relay. See «RELAYS & SOLENOIDS»(ref-133266-S07889557092002052100000) under RELAYS & SOLENOIDS. If relay is okay, locate and repair power open between main relay and ECM connector or ground open between body and ECM connector.

Scheme 51

Scheme 52

Scheme 53

Scheme 54

Scheme 55

Scheme 56

Scheme 57

CAMSHAFT POSITION SENSOR

Note. Only component testing procedure is covered. For Camshaft Position (CMP) sensor system and circuit testing procedure, see appropriate SELF-DIAGNOSTICS article.

Note. For CMP location see scheme 1- (Scheme 50).

Note. For CMP sensor removal and installation, see CAMSHAFT POSITION SENSOR under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION article.

Optima & Magentis (Canadian)

Note. DO NOT use OBD-II Data Link Connector (OBD-II DLC) for lab scope power source as this will affect waveform.

Set lab scope time to 20 milliseconds and voltage to 5 volts. Start engine and allow it to reach normal operating temperature. With engine at idle, compare CMP sensor waveform to normal CMP sensor waveform. (Scheme 59) Connect lab scope as follows

1. On 2.4L (A/T), connect lab scope positive probe to ECM connector B01 terminal No. B16 (Black wire). (Scheme 52) Connect lab scope negative probe to ground.
2. On 2.4L (M/T), connect lab scope positive probe to ECM connector B01 terminal No. D18 (Black wire). (Scheme 53) Connect lab scope negative probe to ground.
3. On 2.7L, connect lab scope positive probe to ECM connector B01 terminal No. F7 (Black wire). (Scheme 54) Connect lab scope negative probe to ECM connector B01 terminal No. F8 (Black/White wire).

If waveform is erratic, replace CMP sensor.

Rio

Note. DO NOT use OBD-II Data Link Connector (OBD-II DLC) for lab scope power source as this will affect waveform.

Connect lab scope positive probe to ECM connector B04 terminal No. 18 (Red/Black wire). (Scheme 55) Connect lab scope negative probe to ground. Set lab scope time to 20 milliseconds and voltage to 5 volts. Start engine and allow it to reach normal operating temperature. With engine at idle, compare CMP sensor waveform to normal CMP sensor waveform. (Scheme 59) If waveform is erratic, replace CMP sensor.

Sedona

Note. DO NOT use OBD-II Data Link Connector (OBD-II DLC) for lab scope power source as this will affect waveform.

Connect lab scope positive probe to ECM connector B01 terminal No. B8 (White/Green wire). (Scheme 56) Connect lab scope negative probe to ground. Set lab scope time to 20 milliseconds and voltage to 5 volts. Start engine and allow it to reach normal operating temperature. With engine at idle, compare CMP sensor waveform to normal CMP sensor waveform. (Scheme 59) If waveform is erratic, replace CMP sensor.

Spectra

Note. DO NOT use OBD-II Data Link Connector (OBD-II DLC) for lab scope power source as this will affect waveform.

Connect lab scope positive probe to ECM connector terminal No. 79 (Blue/Red wire). (Scheme 57) Connect lab scope negative probe to ground. Set lab scope time to 20 milliseconds and voltage to 5 volts. Start engine and allow it to reach normal operating temperature. With engine at idle, compare CMP sensor waveform to normal CMP sensor waveform. (Scheme 59) If waveform is erratic, replace CMP sensor.

Sportage

Note. DO NOT use OBD-II Data Link Connector (OBD-II DLC) for lab scope power source as this will affect waveform.

Connect lab scope positive probe to ECM connector terminal No. 44 (White/Red wire). (Scheme 58) Connect lab scope negative probe to ground. Set lab scope time to 20 milliseconds and voltage to 5 volts. Start engine and allow it to reach normal operating temperature. With engine at idle, compare CMP sensor waveform to normal CMP sensor waveform. (Scheme 59) If waveform is erratic, replace CMP sensor.

Scheme 58

CHASSIS ACCELERATION SENSOR

Note. Only component testing procedure is covered. For Chassis Acceleration (CA) sensor system and circuit testing procedure, see appropriate SELF-DIAGNOSTICS article.

Spectra & Sportage

On Spectra, CA sensor is located in right side of engine compartment, behind strut tower. On Sportage, CA sensor is located in right rear engine compartment, below starter. Turn ignition on. On Spectra, backprobe and measure voltage between CA sensor 3-pin harness connector terminal No. 3 (Red/Black wire) and ground. On Sportage, backprobe and measure voltage between CA sensor 3-pin harness connector terminal No. 3 (Blue/Green wire) and ground. (Scheme 60) Check for voltage spike (less than one volt) while tapping CA sensor bracket. If no voltage spike is observed, replace sensor. For CA sensor removal and installation, see CHASSIS ACCELERATION SENSOR under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION article.

Scheme 59

CRANKSHAFT POSITION SENSOR

Note. Only component testing procedure is covered. For Crankshaft Position (CKP) sensor system and circuit testing procedure, see appropriate SELF-DIAGNOSTICS article.

Note. For CMP location. see scheme 1- (Scheme 50).

Note. For CKP sensor removal and installation, see appropriate CAMSHAFT POSITION SENSOR under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION article.

Note. DO NOT use OBD-II Data Link Connector (OBD-II DLC) for lab scope power source as this will affect waveform.

Set lab scope time to 50 milliseconds and voltage to 5 volts. Start engine and allow it to reach normal operating temperature. With engine at idle, compare CKP sensor waveform to normal CKP sensor waveform. (Scheme 61) Connect lab scope as follows

1. On 2.4L (A/T), backprobing, connect lab scope positive probe to ECM connector B01 terminal No. B5 (Yellow wire) and negative probe to ground. (Scheme 52)
2. On 2.4L (M/T), backprobing, connect lab scope positive probe to ECM connector B01 terminal No. D19 (Yellow wire)and negative probe to ground. (Scheme 53)
3. On 2.7L, backprobing, connect lab scope positive probe to ECM connector B01 terminal No. M8 (Yellow wire) and negative probe to ECM connector B01 terminal No. M21 (Black/White wire). (Scheme 54)

If waveform is erratic, replace CKP sensor.

Note. DO NOT use OBD-II Data Link Connector (OBD-II DLC) for lab scope power source, as this will affect waveform.

Backprobing, connect lab scope positive probe to ECM connector B04 terminal No. 20 (White wire) and negative probe to ECM connector B04 terminal No. 10 (Green wire). (Scheme 55) Start engine and allow it to reach normal operating temperature. With engine at idle, observe CKP waveform. Compare to normal waveform. (Scheme 61) If CKP sensor waveform is erratic, replace CKP sensor.

Note. DO NOT use OBD-II Data Link Connector (OBD-II DLC) for lab scope power source, as this will affect waveform.

Backprobing connect lab scope positive probe to ECM connector B01 terminal No. B2 (Yellow/Green wire) and negative probe to ground. (Scheme 56) Start engine and allow it to reach normal operating temperature. With engine at idle, observe CKP waveform. Compare to normal waveform. (Scheme 61) If CKP sensor waveform is erratic, replace CKP sensor.

Note. DO NOT use OBD-II Data Link Connector (OBD-II DLC) for lab scope power source, as this will affect waveform.

Backprobing connect lab scope positive probe to ECM connector B01 terminal No. 34 (White/Green wire) and negative probe to ECM connector terminal No. 78 (Black/Yellow wire). (Scheme 57) Start engine and allow it to reach normal operating temperature. With engine at idle, observe CKP waveform. Compare to normal waveform. (Scheme 61) If CKP sensor waveform is erratic, replace CKP sensor.

Note. DO NOT use OBD-II Data Link Connector (OBD-II DLC) for lab scope power source as this will affect waveform.

Backprobing connect lab scope positive probe to ECM connector B01 terminal No. 43 (Yellow/Blue wire) and negative probe to ECM connector terminal No. 6 (Black/Blue wire). (Scheme 58) Start engine and allow it to reach normal operating temperature. With engine at idle, observe CKP waveform. Compare to normal waveform. (Scheme 61) If CKP sensor waveform is erratic, replace CKP sensor.

Scheme 60

ENGINE COOLANT TEMPERATURE SENSOR

Note. Only component testing procedure is covered. For Engine Coolant Temperature (ECT) sensor system and circuit testing procedure, see appropriate SELF-DIAGNOSTICS article.

Note. For ECT sensor location. see scheme 1- (Scheme 50).

Note. For ECT sensor removal and installation, see ENGINE COOLANT TEMPERATURE SENSOR under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION article.

Remove (ECT) sensor. Place sensor and thermometer in container with water and slowly heat water. Measure resistance between ECT sensor terminals No. 1 & 3. (Scheme 62) Note resistance at specified temperatures. For ECT sensor specifications, see ECT SENSOR RESISTANCE SPECIFICATIONS table. Replace ECT sensor as necessary. For ECT sensor removal and installation, see ENGINE COOLANT TEMPERATURE SENSOR under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION article.

ECT SENSOR RESISTANCE SPECIFICATIONS

Scheme 61

FUEL TANK PRESSURE SENSOR

Note. Only component testing procedure is covered. For Fuel Tank Pressure (FTP) sensor system and circuit testing procedure, see appropriate SELF-DIAGNOSTICS article.

Note. For FTP sensor removal and installation, see appropriate FUEL TANK PRESSURE SENSOR under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION article.

Note. On Spectra, component testing procedure does not apply (not equip).

Vent fuel tank by removing fuel filler cap. Ensure ignition is off. Locate FTP sensor 3-pin harness connector under rear seat, through fuel pump assembly access panel on vehicle floor (except Optima & Magentis (Canadian)). For Optima & Magentis (Canadian) remove fuel pump access cover in trunk. Disconnect FTP sensor harness connector. Check resistance between FTP sensor connector terminals. (Scheme 63) See FUEL TANK PRESSURE SENSOR RESISTANCE SPECIFICATIONS table. If FTP sensor is not as specified, replace FTP sensor.

FUEL TANK PRESSURE SENSOR RESISTANCE SPECIFICATIONS

Scheme 62

Optima & Magentis (Canadian) (2.4L)

Note. Only component testing procedure is covered. For Heated Oxygen (HO2S) sensor system and circuit testing procedure, see appropriate SELF-DIAGNOSTICS article.

Note. For H02S sensor location. see scheme 1- (Scheme 50).

Note. For HO2S sensor removal and installation, see appropriate HEATED OXYGEN SENSOR under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION article.

Note. HO2S heater resistance will vary depending on temperature. In some instances, temperature value is not given by manufacturer.

1. Disconnect front or rear HO2S 4-pin harness connector. At front or rear HO2S side connector measure resistance between terminals No. 3 and 4. (Scheme 64) HO2S heater resistance should be between 3-6 ohms at 68°F (20°C). If HO2S is not as specified, replace HO2S.
2. Connect HO2S connector. Start and run engine at normal operating temperature for at least 10 minutes. Using scan tool, lab scope or voltmeter, monitor appropriate HO2S signal. If using voltmeter or lab scope, connect positive lead to front or rear HO2S harness connector terminal No. 2 (Tan wire). Connect negative lead to ground. HO2S signal should switch from lean to rich, or rich to lean, at least 3 times every 10 seconds. Front HO2S signal should switch between 0-1 volt. Rear HO2S signal should switch between.6-.8 volt. If HO2S is not as specified, replace HO2S.

Optima & Magentis (Canadian) (2.7L)

1. Disconnect front or rear HO2S 4-pin harness connector. At front or rear HO2S side connector measure resistance between terminals No. 3 and 4. (Scheme 64) HO2S heater resistance should be between 3-6 ohms at 68°F (20°C). If HO2S is not as specified, replace HO2S.
2. Connect HO2S connector. Start and run engine at normal operating temperature for at least 10 minutes. Using scan tool, lab scope or voltmeter, monitor appropriate HO2S signal. If using voltmeter or lab scope, connect positive lead to right front HO2S harness connector terminal No. 2 (Violet wire) or to left front HO2S harness connector terminal No. 2 (Yellow wire). Connect negative lead to ground. On rear HO2S, connect positive lead to right rear HO2S connector terminal No. 2 (Violet wire) or to left rear HO2S connector terminal No. 2 (Violet/White wire). Signal should switch from lean to rich, or rich to lean, at least 3 times every 10 seconds. Front HO2S signal should switch between 0-1 volt. Rear HO2S signal should switch between.6-.9 volt. If HO2S is not as specified, replace HO2S.

1. Disconnect front or rear HO2S 4-pin harness connector. At front or rear HO2S side connector measure resistance between terminals No. 1 and 3. (Scheme 64) HO2S heater resistance should be between 3-7 ohms at 68°F (20°C). If HO2S is not as specified, replace HO2S.
2. Connect HO2S connector. Start and run engine at normal operating temperature for at least 10 minutes. Using scan tool, lab scope or voltmeter, monitor appropriate HO2S signal. If using voltmeter or lab scope, connect positive lead to front HO2S harness connector terminal No. 3 (Yellow/Blue wire) or to rear HO2S harness connector terminal No. 3 (Light-green/Yellow wire). Connect negative lead to ground. HO2S signal should switch from lean to rich, or rich to lean, at least 3 times every 10 seconds. Front HO2S signal should switch between 0-1 volt. Rear HO2S signal should switch between.6-.9 volt. If HO2S is not as specified, replace HO2S.

1. Disconnect front or rear HO2S 4-pin harness connector. At front or rear HO2S side connector measure resistance between terminals No. 3 and 4. (Scheme 64) HO2S heater resistance should be between 3-6 ohms at 68°F (20°C). If HO2S is not as specified, replace HO2S.
2. Connect HO2S connector. Start and run engine at normal operating temperature for at least 10 minutes. Using scan tool, lab scope or voltmeter, monitor appropriate HO2S signal. If using voltmeter or lab scope, connect positive lead to right front HO2S harness connector terminal No. 2 (Yellow/Green wire) or to left front HO2S harness connector terminal No. 2 (Blue wire). Connect negative lead to ground. On rear HO2S, connect positive lead to right rear HO2S connector terminal No. 2 (White/Yellow wire) or to left rear HO2S connector terminal No. 2 (Red wire). Signal should switch from lean to rich, or rich to lean, at least 3 times every 10 seconds. Front HO2S signal should switch between 0-1 volt. Rear HO2S signal should switch between.6-.9 volt. If HO2S is not as specified, replace HO2S.

1. Disconnect front or rear HO2S 4-pin harness connector. At front or rear HO2S side connector measure resistance between terminals No. 1 and 3. (Scheme 64) HO2S heater resistance should be between 2-4 ohms at 68°F (20°C). If HO2S is not as specified, replace HO2S.
2. Connect HO2S connector. Start and run engine at normal operating temperature for at least 10 minutes. Using scan tool, lab scope or voltmeter, monitor appropriate HO2S signal. If using voltmeter or lab scope, connect positive lead to front HO2S harness connector terminal No. 4 (Green/Brown wire) or to rear HO2S harness connector terminal No. 4 (Green/White wire). Connect negative lead to ground. HO2S signal should switch from lean to rich, or rich to lean, at least 3 times every 10 seconds. Front HO2S signal should switch between 0-1 volt. Rear HO2S signal should switch between.6-.8 volt. If HO2S is not as specified, replace HO2S.

1. Disconnect front or rear HO2S 4-pin harness connector. At front or rear HO2S side connector measure resistance between terminals No. 1 and 3. (Scheme 64) HO2S heater resistance should be between 6 ohms at 68°F (20°C). If HO2S is not as specified, replace HO2S.
2. Connect HO2S connector. Start and run engine at normal operating temperature for at least 10 minutes. Using scan tool, lab scope or voltmeter, monitor appropriate HO2S signal. If using voltmeter or lab scope, connect positive lead to front HO2S harness connector terminal No. 4 (Yellow/White wire) or to rear HO2S connector harness terminal No. 4 (Blue wire). HO2S signal should switch from lean to rich, or rich to lean, at least 3 times every 10 seconds. Front HO2S signal should switch between.1-.9 volts. Rear signal should switch between.6-.7 volts. If HO2S is not as specified, replace HO2S.

Scheme 63

INTAKE AIR TEMPERATURE SENSOR

Note. Only component testing procedure is covered. For Intake Air Temperature (IAT) sensor system and circuit testing procedure, see appropriate SELF-DIAGNOSTICS article.

Note. For IAT sensor location. see scheme 1- (Scheme 50).

Note. For IAT sensor removal and installation, see appropriate INTAKE AIR TEMPERATURE SENSOR under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION article.

Optima & Magentis (Canadian) (2.4L), Sedona & Spectra

IAT sensor, is built into Mass Air Flow (MAF) sensor. Disconnect MAF/IAT sensor 5-pin harness connector. Measure resistance between IAT sensor terminal No. 1 and 2 for Optima (2.4L) and Spectra. And terminal No. 1 and 3 for Sedona. (Scheme 65) Resistance should be 2.22-2.82 k/ohms at 68°F (20°C). If resistance is not as specified, replace IAT sensor.

Disconnect IAT sensor 2-pin harness connector. Located IAT sensor on back part of intake manifold. Measure resistance between IAT sensor terminals No. 1 and 2. (Scheme 65) Resistance should be 2.22-2.82 k/ohms at 68°F (20°C). If resistance is not as specified, replace IAT sensor.

Disconnect IAT sensor 2-pin harness connector. Locate IAT sensor on intake manifold, near fuel injector No. 4. Measure resistance between IAT sensor terminals 1 and 2. (Scheme 65) Resistance should be 2.22-2.82 k/ohms at 68°F (20°C). If resistance is not as specified, replace IAT sensor.

Disconnect IAT sensor 2-pin harness connector. Located IAT sensor on air cleaner assembly. Measure resistance between IAT sensor terminals No. 1 and 2. (Scheme 65) Resistance should be 2.22-2.82 k/ohms at 68°F (20°C). If resistance is not as specified, replace IAT sensor.

KNOCK SENSOR

Note. Only component testing procedure is covered. See appropriate SELF-DIAGNOSTICS article.

Note. For Knock sensor location see scheme 1- (Scheme 50).

Note. For Knock sensor removal and installation, see appropriate KNOCK SENSOR under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION article.

Knock sensor is located on left side of engine block. Disconnect 2-pin harness connector from sensor. At component side connector measure resistance between terminals No. 1 and 2. (Scheme 66) Resistance should be 4.50-5.50 k/ohms at 68°F (20°C). If resistance is not as specified, replace Knock sensor.

There are 2 knock sensors, one on each side of block. Disconnect 3-pin harness from sensor. At component side connector measure resistance between terminals No. 2 and 3. (Scheme 66) Resistance should be 4.50-5.50 k/ohms at 68°F (20°C). If resistance is not as specified, replace Knock sensor.

Remove knock sensor from engine. Mount knock sensor in jaws of bench vise. Connect voltmeter between knock sensor connector terminals No. 1 and 2. (Scheme 66) Using hammer, sharply rap on bench vise and check for voltage spike (less than one volt). If no voltage spike is observed, replace knock sensor.

Knock sensor is located on right side of engine block. Disconnect 2-pin harness connector from sensor. At component side connector measure resistance between terminals No. 1 and 2. (Scheme 66) Resistance should be 4.50-5.50 k/ohms at 68°F (20°C). If resistance is not as specified, replace Knock sensor.

Remove knock sensor from engine. Mount knock sensor in jaws of bench vise. Connect voltmeter between knock sensor connector terminals No. 1 and 2. (Scheme 66) Using hammer, sharply rap on bench vise and check for voltage spike (less than one volt). If no voltage spike is observed, replace knock sensor.

Knock sensor is located on right side of engine, above oil filter. Turn ignition on. Backprobe and measure voltage between knock sensor connector terminal No. 1 (Yellow/Green wire) and ground. (Scheme 66) Tap engine crossmember bracket and check for voltage spike (less than one volt). If no voltage spike is observed, replace knock sensor.

Scheme 64

MASS AIR FLOW SENSOR

Note. Only component testing procedure is covered. For Mass Air Flow (MAF) sensor system and circuit testing procedure, see appropriate SELF-DIAGNOSTICS article.

Note. For MAF sensor location. see scheme 1- (Scheme 50).

Note. For MAF sensor removal and installation, see appropriate MASS AIR FLOW SENSOR under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION article.

Warm up engine to normal operating temperature and let idle. Using DVOM to backprobe, measure voltage between following MAF sensor harness connector terminals and ground

1. On 2.4L, terminal No. 5 (Brown wire). (Scheme 67) At idle, voltage should be 1.2-1.6 volts. When engine is accelerated voltage should increase, at 3000 RPM voltage should be between 1.6-2.2 volts. If voltage is not as specified, replace MAF sensor.
2. On 2.7L, terminal No. 2 (Yellow wire). (Scheme 67) At idle, voltage should be 0.6-1.0 volts. When engine is accelerated voltage should increase, at 2000 RPM voltage should be between 1.0-1.6 volts. If voltage is not as specified, replace MAF sensor.

Warm up engine to normal operating temperature and let idle. Backprobe and measure voltage between MAF sensor harness connector terminal No. 2 (Green/Blue wire) and ground. (Scheme 67) At idle, voltage should be 0.6-0.8 volts. When engine is accelerated, voltage should be between 3.0-4.0 volts at 3000 RPM. If voltage is not as specified, replace MAF sensor.

Warm up engine to normal operating temperature and let idle. Backprobe and measure voltage between MAF sensor harness connector terminal No. 5 (Brown wire) and ground. (Scheme 67) At idle, voltage should be 0.6-0.8 volts. When engine is accelerated, voltage should be about 1.0 volts at 2000 RPM. If voltage is not as specified, replace MAF sensor.

Warm up engine to normal operating temperature and let idle. Backprobe and measure voltage between MAF sensor harness connector terminal No. 5 (Red/White wire) and ground. (Scheme 67) At idle, voltage should be 0.8-1.2 volts. When engine is accelerated, voltage should be between 3.5-4.0 volts at 3000 RPM. If voltage is not as specified, replace MAF sensor.

Warm up engine to normal operating temperature and let idle. Backprobe and measure voltage between MAF sensor harness connector terminal No. 1 (Red/Green wire) and ground. (Scheme 67) At idle, voltage should be 0.8-1.2 volts. When engine is accelerated, voltage should be between 3.5-4.0 volts at 3300 RPM. If voltage is not as specified, replace MAF sensor.

Scheme 65

MANIFOLD ABSOLUTE PRESSURE SENSOR

Note. Only component testing procedure is covered. For Manifold Absolute Pressure (MAP) sensor system and circuit testing procedure, see appropriate SELF-DIAGNOSTICS article.

Note. For MAP sensor location see scheme 1- (Scheme 50).

Note. For MAP sensor removal and installation, see appropriate MANIFOLD ABSOLUTE PRESSURE SENSOR under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION article.

Optima & Magentis (Canadian) (2.4L) & Sedona

Turn ignition off. Locate MAP sensor on upper center part of intake manifold. Using DVOM backprobe MAP sensor 4-pin harness connectors terminal No. 1 and 4. (Scheme 68) Check voltage with ignition on. Voltage should be 4-5 volts. Also check voltage with engine running at idle. Voltage should be 0.8-2.4 volts. If voltage is not as specified, replace MAP sensor.

Scheme 66

THROTTLE POSITION SENSOR

Note. Only component testing procedure is covered. For Throttle Position (TP) sensor system and circuit testing procedure, see appropriate SELF-DIAGNOSTICS article.

Note. For TP sensor location. see scheme 1- (Scheme 50).

Note. For TP sensor removal and installation, see appropriate THROTTLE POSITION SENSOR under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION article.

1. Turn ignition off. Disconnect TP 3-pin sensor harness connector. Measure resistance at component side between connector terminals No. 2 and 3. (Scheme 69) With throttle fully closed, resistance should be 3.5-6.5 k/ohms. If resistances are as specified, go to next step. If resistances are not as specified, Adjust or replace TP sensor as necessary.
2. Connect TP sensor connector. Turn ignition on. Backprobe and measure voltage between TP sensor connector terminals No. 1 (Blue wire) and No. 3 (Black/White wire). (Scheme 69) With throttle fully closed voltage should be.3-.9 volts. With throttle wide open, voltage should be 4.0-4.6 volts. If voltages are not as specified, Adjust or replace TP sensor as necessary.

1. Turn ignition off. Disconnect TP sensor 3-pin harness connector. Measure resistance at component side between connector terminals No. 2 and 3. (Scheme 69) With throttle fully closed, resistance should be 1.6-2.4 k/ohms. If resistances are as specified, go to next step. If resistances are not as specified, Adjust or replace TP sensor as necessary.
2. Connect TP sensor connector. Turn ignition on. Backprobe and measure voltage between TP sensor connector terminals No. 1 (Blue wire) and No. 2 (Black/White wire). (Scheme 69) With throttle fully closed voltage should be.2-.8 volts. With throttle wide open, voltage should be 4.0-4.4 volts. If voltages are not as specified, Adjust or replace TP sensor as necessary.

1. Turn ignition off. Disconnect TP sensor 3-pin harness connector. Measure resistance at component side between connector terminals No. 1 and 2. (Scheme 69) With throttle fully closed, resistance should be 1.6-2.4 k/ohms. If resistances are as specified, go to next step. If resistances are not as specified, replace TP sensor as necessary.
2. Connect TP sensor connector. Turn ignition on. Backprobe and measure voltage between TP sensor connector terminals No. 1 (White/Green) and No. 3 (Blue/Orange wire). (Scheme 69) With throttle fully closed voltage should be.2-.8 volts. With throttle wide open, voltage should be 4.0-4.8 volts. If voltages are not as specified, replace TP sensor as necessary.

1. Turn ignition off. Disconnect TP sensor 4-pin harness connector. Measure resistance at component side between connector terminals No. 1 and 4. (Scheme 69) With throttle fully closed, resistance should be 3.5-6.5 k/ohms. If resistances are as specified, go to next step. If resistances are not as specified, Adjust or replace TP sensor as necessary.
2. Connect TP sensor connector. Turn ignition on. Backprobe and measure voltage between TP sensor connector terminals No. 2 (Red/Green wire) and No. 4 (Black/Yellow wire). (Scheme 69) With throttle fully closed voltage should be.3-.9 volts. With throttle wide open, voltage should be 4.0-4.6 volts. If voltages are not as specified, Adjust or replace TP sensor as necessary.

1. Turn ignition off. Disconnect TP sensor 3-pin harness connector. Measure resistance at component side between connector terminals No. 1 and 2. (Scheme 69) With throttle fully closed, resistance should be 1.6-2.4 k/ohms. As throttle is opened, resistance should smoothly increase linearly to 4.1-4.3 k/ohms at wide open throttle If resistances are as specified, go to next step. If resistances are not as specified, replace TP sensor as necessary.
2. Connect TP sensor connector. Turn ignition on. Backprobe and measure voltage between TP sensor connector terminals No. 1 (Black/Green wire) and No. 3 (Blue/Orange wire). (Scheme 69) With throttle fully closed, voltage should be.3-.9 volts. With throttle wide open, voltage should be 4.0-4.4 volts. If voltages are not as specified, replace TP sensor as necessary.

1. Disconnect TP sensor 3-pin connector. Measure resistance at component side between TP sensor connector terminals No. 1 and 2. (Scheme 69) Resistance should be about 1.0 k/ohms with throttle closed and about one ohm with throttle wide open. If resistances are as specified, go to next step. If resistances are not as specified, replace TP sensor as necessary.
2. Connect TP sensor connector. Turn ignition on. Backprobe and measure voltage between TP sensor connector terminals No. 1 (Green/Yellow wire) and No. 3 (Yellow/Black wire). (Scheme 69) With throttle fully closed, voltage should be about.5 volts. With throttle wide open, voltage should be about 4.1 volts. If voltages are not as specified, replace TP sensor as necessary.

Scheme 67

VEHICLE SPEED SENSOR

Note. Only component testing procedure is covered. For Vehicle Speed Sensor (VSS) system and circuit testing procedure, see appropriate SELF-DIAGNOSTICS article.

Note. For VSS sensor location. see scheme 1- (Scheme 50).

Note. For VSS sensor removal and installation, see appropriate VEHICLE SPEED SENSOR under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION article.

Remove VSS from rear of transmission at top of transaxle. Connect 3-10 k/ohm resistor (Scheme 70) Connect voltmeter between terminals No. 2 and 3. Spin shaft of VSS and check for voltage pulsations. There should be 4 voltage pulsations per revolution. If there are not 4 pulsations per revolution, replace VSS.

VSS is mounted on rear of transmission at top of transaxle. Raise and support vehicle. Block one drive wheel. Turn ignition on. Backprobe and measure voltage between VSS connector terminal No. 3 (Green/Orange) wire and ground while assistant spins free drive wheel. Voltage should toggle between 1-10 volts as wheel is rotated. If voltage does not toggle as specified, replace VSS.

Remove VSS from rear of transmission at top of transaxle. Connect 3-10 k/ohm resistor (Scheme 70) Connect voltmeter between terminals No. 2 and 3. Spin shaft of VSS and check for voltage pulsations. There should be 4 voltage pulsations per revolution. If there are not 4 pulsations per revolution, replace VSS.

VSS is mounted on rear of transmission at top of transaxle. Raise and support vehicle. Block one drive wheel. Turn ignition on. Backprobe and measure voltage between VSS connector terminal No. 1 (Green/Orange wire - A/T) or No. 3 (Green/Orange wire - M/T) and ground while assistant spins free drive wheel. Voltage should toggle between 1-10 volts as wheel is rotated. If voltage does not toggle as specified, replace VSS.

On 2WD, VSS is mounted on right side of transmission. On 4WD, VSS is mounted at left rear (transfer case) side of transmission. Raise and support vehicle. Block one drive wheel. Disconnect VSS 2-pin harness connector. Connect DVOM at sensor terminal No. 1 & 2, measure sensor resistance while assistant spins free drive wheel. Resistance should toggle between 0-10 ohms. If voltage does not toggle as specified, replace VSS.

Scheme 68

BRAKE PEDAL SWITCH

Note. Only component testing procedure is covered. For brake pedal switch circuit testing, see appropriate WIRING DIAGRAM article.

Optima & Magentis (Canadian) (With Cruise Control)

1. Disconnect brake pedal switch 4-pin harness connector. Locate brake pedal switch mounted at upper part of brake pedal assembly. Measure resistance between brake pedal switch terminals No. 1 and 2. (Scheme 71) With brake pedal released, there should be no continuity. With brake pedal depressed, there should be continuity. Adjust or replace switch as necessary.
2. Measure resistance between brake pedal switch terminals No. 3 and 4. With brake pedal released, there should be continuity. With brake pedal depressed, there should be no continuity. Adjust or replace switch as necessary.

Optima & Magentis (Canadian) (Without Cruise Control)

1. Disconnect brake pedal switch 2-pin harness connector. Locate brake pedal switch mounted at upper part of brake pedal assembly. Measure resistance between brake pedal switch terminals No. 1 and 2. (Scheme 71) With brake pedal released, there should be no continuity. With brake pedal depressed, there should be continuity. Adjust or replace switch as necessary.

1. Disconnect brake pedal switch 2-pin harness connector. Locate brake pedal switch mounted at upper part of brake pedal assembly. Measure resistance between brake pedal switch terminals No. 1 and 2. (Scheme 71) With brake pedal released, there should be no continuity. With brake pedal depressed, there should be continuity. Adjust or replace switch as necessary.

1. Disconnect brake pedal switch 4-pin harness connector. Locate brake pedal switch mounted at upper part of brake pedal assembly. Measure resistance between brake pedal switch terminals No. 1 and 4 (Red wire and White wire). (Scheme 71) With brake pedal released, there should be no continuity. With brake pedal depressed, there should be continuity.
2. Measure resistance between brake pedal switch terminals No. 2 and 3 (Green/White wire and Yellow wire). With brake pedal released, there should be continuity. With brake pedal depressed, there should be no continuity. Adjust or replace switch as necessary.

Spectra (With Cruise Control)

1. Disconnect brake pedal switch 4-pin harness connector. Locate brake pedal switch mounted at upper part of brake pedal assembly. Measure resistance between brake pedal switch terminals No. 1 and 4 (Pink/Black wire and Red/Black wire). (Scheme 71) With brake pedal released, there should be no continuity. With brake pedal depressed, there should be continuity.
2. Measure resistance between brake pedal switch terminals No. 2 and 3 (Blue wire and Brown/Red wire). With brake pedal released, there should be continuity. With brake pedal depressed, there should be no continuity. Adjust or replace switch as necessary.

Spectra (Without Cruise Control)

1. Disconnect brake pedal switch 2-pin harness connector. Locate brake pedal switch mounted at upper part of brake pedal assembly. Measure resistance between brake pedal switch terminals No. 1 and 2. (Scheme 71) With brake pedal released, there should be no continuity. With brake pedal depressed, there should be continuity. Adjust or replace switch as necessary.

Sportage (With Cruise Control)

1. Disconnect brake pedal switch 4-pin harness connector. Locate brake pedal switch mounted at upper part of brake pedal assembly. Measure resistance between brake pedal switch terminals No. 1 and 4 (Yellow wire and Orange wire). (Scheme 71) With brake pedal released, there should be no continuity. With brake pedal depressed, there should be continuity.
2. Measure resistance between brake pedal switch terminals No. 2 and 3 (Blue wire and Gray wire). With brake pedal released, there should be continuity. With brake pedal depressed, there should be no continuity. Adjust or replace switch as necessary.

Sportage (Without Cruise Control)

1. Disconnect brake pedal switch 2-pin harness connector. Locate brake pedal switch mounted at upper part of brake pedal assembly. Measure resistance between brake pedal switch terminals No. 1 and 2. (Scheme 71) With brake pedal released, there should be no continuity. With brake pedal depressed, there should be continuity. Adjust or replace switch as necessary.

Scheme 69

CLUTCH PEDAL POSITION SWITCH

Note. Only component testing procedure is covered. For clutch pedal position switch circuit testing, see appropriate WIRING DIAGRAM article.

Optima & Magentis (Canadian), Spectra & Sportage

Disconnect Clutch Pedal Position (CPP) switch 2-pin harness connector. Locate CPP switch mounted at upper part of clutch pedal assembly. Check continuity between CPP switch terminals. (Scheme 72) With clutch pedal depressed, there should be continuity. With clutch pedal released, there should not be continuity. Adjust or replace CPP switch as necessary.

Scheme 70

POWER STEERING PRESSURE SWITCH

Note. Only component testing procedure is covered. For Power Steering Pressure (PSP) switch system and circuit testing procedure, see appropriate SELF-DIAGNOSTICS article.

Note. For PSP sensor location. see scheme 1- (Scheme 50).

Note. For PSP sensor removal and installation, see appropriate POWER STEERING PRESSURE SENSOR under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION article.

Power Steering Pressure (PSP) switch closes in response to an increase in power steering fluid pressure (load condition). With switch closed, a monitored voltage circuit supplied by ECM is pulled low to vehicle ground through switch. ECM then sends a signal to ISC actuator to adjust idle speed to compensate for increased engine load.

1. Turn ignition off, disconnect power steering pressure switch 1-pin harness connector located on power steering pump. Using a DVOM, check for continuity between switch and chassis ground. (Scheme 73) Start engine, continuity should not exist with wheels in straight-ahead position and engine idling. Continuity should exist when steering wheel is turned.
2. Turn engine off. Turn ignition switch to ON position. Measure voltage between switch connector and ground. If battery voltage is present, circuit is okay. If battery voltage is not present, repair circuit between switch and ECM.

Scheme 71

TRANSMISSION RANGE SWITCH

Note. Only component testing procedure is covered. For Transmission Range Switch system and circuit testing procedure, see appropriate SELF-DIAGNOSTICS article.

Note. For Transmission Range Switch location. see scheme 1- (Scheme 50).

Note. For Transmission Range Switch removal and installation, see appropriate TRANSMISSION RANGE SWITCH under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION article.

Transmission range switch is located on top left of transaxle (except Sportage). On Sportage 2WD, transmission range switch is located on right side of transmission. On Sportage 4WD, transmission range switch is located on left rear of transfer case.

Disconnect battery negative cable. Disconnect transmission range switch connector. Using DVOM, check continuity in between transmission range switch terminals. See TRANSMISSION RANGE SWITCH SPECIFICATIONS table. If sensor does not test as specified, adjust or repair as needed.

TRANSMISSION RANGE SWITCH SPECIFICATIONS

Scheme 72

Scheme 73

Scheme 74

Scheme 75

RELAYS

Note. Only component testing procedure is covered. For circuit testing and identification, see WIRING DIAGRAMS article.

ECM Control Relay (Optima & Magentis (Canadian) 2.4L)

1. Remove ECM control relay located in vehicle right side of dash. (Scheme 78) Check for continuity between relay terminals No. 1 and No. 3. (Scheme 79) If continuity does not exist, go to next step. If continuity exists, replace relay.
2. Check for continuity between relay terminals No. 4 and No. 6. (Scheme 79) If continuity does not exist, go to next step. If continuity exists, replace relay.
3. Connect a jumper wire between positive battery terminal and relay terminal No. 5. Connect another jumper wire between negative battery terminal and relay terminal No. 7. Check continuity between relay terminals No. 1 and No. 3. If continuity exist, go to next step. If continuity does not exist, replace relay.
4. Connect a jumper wire between positive battery terminal and relay terminal No. 6. Connect another jumper wire between negative battery terminal and relay terminal No. 8. Check for battery voltage at terminal No. 4. Voltage should exist. If battery voltage does not exist, replace relay.

Scheme 76

Scheme 77

Fuel Pump & Main Relays (Optima & Magentis (Canadian) 2.7L)

Note. Use same procedure to check fuel pump or main relay.

1. Remove fuel pump or main relay, located in vehicle right side of dash. (Scheme 78) Check for continuity between relay terminals No. 1 and No. 5. (Scheme 80) If continuity does not exist, go to next step. If continuity exists, replace relay.
2. Connect a jumper wire between positive battery terminal and relay terminal No. 4. Connect another jumper wire between negative battery terminal and relay terminal No. 2. Go to next step.
3. Check continuity between relay terminals No. 1 and No. 5. Continuity should exist. If continuity does not exist, replace relay.

Scheme 78

Fuel Pump & Main Relays (Rio)

Note. Use same procedure to check fuel pump or main relay.

1. Remove fuel pump or main relays from fuse/relay box. Located at left side of engine compartment. Check for continuity between relay terminals No. 2 and No. 3. (Scheme 81) If continuity does not exist, go to next step. If continuity exists, replace relay.
2. Connect a jumper wire between positive battery terminal and relay terminal No. 1. Connect another jumper wire between negative battery terminal and relay terminal No. 4. Go to next step.
3. Check continuity between relay terminals No. 2 and No. 3. Continuity should exist. If continuity does not exist, replace relay.

Scheme 79

Fuel Pump & Main Relays (Sedona)

Note. Testing for fuel pump and main relays for Sedona is not available from manufacturer.

Fuel Pump & Main Relays (Spectra)

Note. Use same procedure to check fuel pump or main relay.

1. Remove fuel pump or main relay from fuse/relay box. Located at left side of engine compartment. Check for continuity between relay terminals No. 1 and 3. (Scheme 82) If continuity does not exist, go to next step. If continuity exists, replace relay.
2. Connect a jumper wire between positive battery terminal and relay terminal No. 2. Connect another jumper wire between negative battery terminal and relay terminal No. 4.
3. Check continuity between relay terminals No. 1 and 3. Continuity should exist. If continuity does not exist, replace relay.

Scheme 80

Fuel Pump & Main Relays (Sportage)

Note. Use same procedure to check fuel pump or main relay.

1. Remove fuel pump or main relay from fuse/relay box. Located at right side of engine compartment. Check for continuity between relay terminal No. 1 and terminals No. 5. (Scheme 83) If continuity does not exist, go to next step. If continuity exists, replace relay.
2. Connect a jumper wire between positive battery terminal and relay terminal No. 4. Connect another jumper wire between negative battery terminal and relay terminal No. 2.
3. Check continuity between relay terminal No. 1 and terminals No. 5. Continuity should exist. If continuity does not exist, replace relay.

Scheme 81

SOLENOIDS

For solenoids and valves testing procedure, see appropriate test in EMISSION SYSTEMS & SUB-SYSTEMS .

FUEL SYSTEM - DELIVERY

Note. If fuel pressure is not as specify, perform fuel filter inspection. For fuel filter location, removal & installation, see FUEL FILTER under FUEL SYSTEM in REMOVAL, OVERHAUL & INSTALLATION article. If fuel filter check okay, check fuel pump. See FUEL PUMP OPERATION .

Except Optima & Magentis (Canadian)

To release fuel pressure, remove rear seat cushion. Locate access to fuel pump harness connector. Disconnect fuel pump harness connector. Start engine and allow to idle until it stalls. Turn ignition off. Disconnect negative battery cable. When testing or repair is complete, reconnect fuel pump connector and negative battery cable. Install rear seat cushion. Prime fuel system. See PRIMING FUEL SYSTEM .

To release fuel pressure, locate access to fuel pump harness connector in trunk. Disconnect fuel pump harness connector. Start engine and allow to idle until it stalls, turn ignition off. Disconnect negative battery cable. When testing or repairs are complete, reconnect fuel pump harness connector and negative battery cable. Prime fuel system. See PRIMING FUEL SYSTEM .

PRIMING FUEL SYSTEM

After performing any operation that requires releasing fuel pressure, fuel system should be primed to prevent long cranking times. To prime fuel system, jumper Data Link Connector (DLC) terminal FUEL PUMP and (B+). On Optima & Magentis (Canadian), DLC is located on left side under dash. On all other models, DLC is located on left side of engine compartment. (Scheme 84), (Scheme 85) or (Scheme 86). Turn ignition on for no longer than 10 seconds to run pump and pressurize fuel system. Turn ignition off and remove jumper wire. Check for leaks. Repair any leaks as necessary.

Scheme 82

Scheme 83

Scheme 84

FUEL PRESSURE

Fuel Pressure (Optima & Magentis (Canadian))

1. Release fuel pressure. See «FUEL PRESSURE RELEASE»(ref-133266-S28650298702002052100000). Disconnect high-pressure fuel hose from fuel delivery pipe. Cover hose connection using rags to avoid spraying of fuel.
2. Using Fuel Pressure Gauge Adapter (09353-38000), install fuel pressure gauge to fuel delivery pipe. (Scheme 87)or (Scheme 88). Torque fuel gauge adapter bolts to 18-26 ft. lbs. (24-35 N.m). Connect negative battery cable.
3. Using fuel pump check terminal connector, activate fuel pump and ensure no fuel leakage is present at pressure gauge or connection. See «PRIMING FUEL SYSTEM»(ref-133266-S30125162592002052100000). If no leaks are present, start engine and allow to idle.
4. Disconnect vacuum hose from fuel pressure regulator, and plug hose end. Measure and record fuel pressure at idle. Reconnect vacuum hose, and again measure and record fuel pressure. See «FUEL PRESSURE SPECIFICATIONS»(ref-133266-S39733966572002041200000) table. If fuel pressures are not within specification, go to next step. If measurements are okay, go to step 8.
5. If fuel pressure is less than specified, check following conditions: Restricted fuel filter. Fuel pressure regulator leaking fuel to fuel return side. Leaking in-tank fuel pick-up hose. Low fuel pump discharge pressure. Repair or replace as necessary. Recheck fuel pressure.
6. If fuel pressure is greater than specified, check for sticking fuel pressure regulator. A restricted or bent fuel return hose or pipe. Repair or replace fuel hose or pipe and fuel pressure regulator. To replace fuel pressure regulator, see FUEL PRESSURE REGULATOR under FUEL SYSTEM in REMOVAL, OVERHAUL & INSTALLATION article.
7. If fuel pressure does not change when regulator vacuum hose is connected and disconnected, check for following conditions: Restricted or damaged vacuum hose. Restricted manifold vacuum port. Sticking or poorly seated fuel pressure regulator valve. Repair or replace as necessary. Recheck fuel pressure.
8. If fuel pressures are as specified, stop engine and check for decrease in fuel pressure gauge. Fuel pressure should hold for approximately 5 minutes. If fuel pressure decreases slowly after engine is stopped, check for leaking injector. See «FUEL INJECTOR LEAKAGE TEST»(ref-133266-S17415988312002052100000), under FUEL INJECTORS. Replace as necessary. If fuel pressure decreases immediately after engine is stopped, check-valve inside fuel pump is not working. Replace fuel pump. To replace fuel pump, see FUEL PUMP under FUEL SYSTEM in REMOVAL, OVERHAUL & INSTALLATION article. After repairs are completed, recheck fuel pressure.
9. After testing is completed, release fuel pressure. See «FUEL PRESSURE RELEASE»(ref-133266-S28650298702002052100000). Disconnect fuel pressure gauge from adapter. Ensure hose connection is covered by shop towel to prevent fuel spray. Remove adapter bolts and adapter. Install NEW "O" ring, and reinstall fuel line with original bolts. Apply battery voltage to fuel pump drive connector terminal. (Scheme 84) Check for fuel leaks. Repair any leaks as necessary.

Scheme 85

Scheme 86

Fuel Pressure (Rio)

1. Release fuel pressure. See «FUEL PRESSURE RELEASE»(ref-133266-S28650298702002052100000). Disconnect high-pressure fuel hose from fuel delivery pipe. Cover hose connection using rags to avoid spraying of fuel. Disconnect battery negative cable. Install fuel pressure gauge (0K2A1 131 001A) on to high-pressure fuel line. (Scheme 89) Connect battery negative cable.
2. Using fuel pump check terminal connector, operate fuel pump and ensure no fuel leakage is present at pressure gauge or connection. See «PRIMING FUEL SYSTEM»(ref-133266-S30125162592002052100000). If no leaks are present, check fuel pressure. See «FUEL PRESSURE SPECIFICATIONS»(ref-133266-S39733966572002041200000) table.
3. If fuel pressure is greater than specified, check for sticking fuel pressure regulator or a restricted or bent fuel return hose or pipe. Repair or replace fuel hoses or pipes and fuel pressure regulator as necessary. To replace fuel pressure regulator, see FUEL PRESSURE REGULATOR under FUEL SYSTEM in REMOVAL, OVERHAUL & INSTALLATION article. If fuel pressure is less than specified, go to next step.
4. Clamp return line and check if fuel pressure rises. If pressure does rise, replace fuel pressure regulator. To replace fuel pressure regulator, see FUEL PRESSURE REGULATOR under FUEL SYSTEM in REMOVAL, OVERHAUL & INSTALLATION article. If pressure does not rise, measure fuel pump maximum pressure. See «MAXIMUM FUEL PRESSURE (RIO & SPECTRA)»(ref-133266-S18548192322002052100000).
5. Stop engine and check for decrease in fuel pressure gauge. See «HOLDING FUEL PRESSURE (RIO & SPECTRA)»(ref-133266-S33690405672002052100000). Fuel pressure should hold for approximately 25 minutes. If fuel pressure decreases slowly after engine is stopped, check for leaking injector. See «FUEL INJECTOR LEAKAGE TEST»(ref-133266-S17415988312002052100000), under FUEL INJECTORS. Replace fuel injectors as necessary. If fuel pressure decreases immediately after engine is stopped, check-valve inside fuel pump is not working. Replace fuel pump. To replace fuel pump, see FUEL PUMP under FUEL SYSTEM in REMOVAL, OVERHAUL & INSTALLATION article. After repairs are completed, recheck fuel pressure.
6. After testing is completed, release fuel pressure. See «FUEL PRESSURE RELEASE»(ref-133266-S28650298702002052100000). Disconnect fuel pressure gauge from adapter. Ensure hose connection is covered by shop towel to prevent fuel spray. Remove adapter bolts and adapter. Replace any old seals with NEW seals, and reinstall fuel line. Apply battery voltage to fuel pump drive connector terminal. (Scheme 85) Check for fuel leaks. Repair any leaks as necessary.

Scheme 87

Scheme 88

1. Release fuel pressure. See «FUEL PRESSURE RELEASE»(ref-133266-S28650298702002052100000). Disconnect high-pressure fuel hose from fuel delivery pipe. Cover hose connection using rags to avoid spraying of fuel.
2. Using Fuel Pressure Gauge Adapter (09353-24100), install fuel pressure gauge to fuel delivery pipe (Scheme 90) Connect negative battery cable.
3. Using fuel pump check terminal connector, operate fuel pump and ensure no fuel leakage is present at pressure gauge or connection. See «PRIMING FUEL SYSTEM»(ref-133266-S30125162592002052100000). If no leaks are present, start engine and allow to idle.
4. Disconnect vacuum hose from fuel pressure regulator, and plug hose end. Measure and record fuel pressure at idle. Reconnect vacuum hose, and again measure and record fuel pressure. See «FUEL PRESSURE SPECIFICATIONS»(ref-133266-S39733966572002041200000) table. If measurements are not within specification, go to next step. If measurements are okay, go to step 8.
5. If fuel pressure is less than specified, check following conditions: Restricted fuel filter. Fuel pressure regulator leaking fuel to fuel return side. Leaking in-tank fuel pick-up hose. Low fuel pump discharge pressure. Repair or replace as necessary. Recheck fuel pressure.
6. If fuel pressure is greater than specified, check for sticking fuel pressure regulator. A restricted or bent fuel return hose or pipe. Repair or replace fuel hose or pipe as necessary, or replace fuel pressure regulator. To replace fuel pressure regulator, see FUEL PRESSURE REGULATOR under FUEL SYSTEM in REMOVAL, OVERHAUL & INSTALLATION article.
7. If fuel pressure does not change when regulator vacuum hose is connected and disconnected, check for following conditions: Restricted or damaged vacuum hose. Restricted manifold vacuum port. Sticking or poorly seated fuel pressure regulator valve. Repair or replace as necessary. Recheck fuel pressure.
8. If fuel pressures are as specified, stop engine and check for decrease in fuel pressure gauge. Fuel pressure should hold for approximately 5 minutes. If fuel pressure decreases slowly after engine is stopped, check for leaking injector. See «FUEL INJECTOR LEAKAGE TEST»(ref-133266-S17415988312002052100000) under FUEL INJECTORS. Replace as necessary. If fuel pressure decreases immediately after engine is stopped, check-valve inside fuel pump is not working. Replace fuel pump. To replace fuel pump, see FUEL PUMP under FUEL SYSTEM in REMOVAL, OVERHAUL & INSTALLATION article. After repairs are completed, recheck fuel pressure and go to next step.
9. After testing is completed, release fuel pressure. See «FUEL PRESSURE RELEASE»(ref-133266-S28650298702002052100000). Disconnect fuel pressure gauge from adapter. Ensure hose connection is covered by shop towel to prevent fuel spray. Remove adapter bolts and adapter. Install NEW "O" ring, and reinstall fuel line with original bolts. Torque bolts to 27-35 INCH lbs (3-4 N.m). Apply battery voltage to fuel pump drive connector terminal. (Scheme 86) Check for fuel leaks. Repair any leaks as necessary.

Fuel Pressure (Spectra)

1. Release fuel pressure. See «FUEL PRESSURE RELEASE»(ref-133266-S28650298702002052100000). Disconnect battery negative cable. Install Fuel Pressure Gauge (0K2A1 131 001) on service port at center of fuel rail. (Scheme 91)
2. Connect battery negative cable. To operate fuel pump, jumper DLC terminals FUEL PUMP and (B+). DLC is located on left side of engine compartment. (Scheme 85)
3. Turn ignition on for 10 seconds or less. Check fuel pressure. See «FUEL PRESSURE SPECIFICATIONS»(ref-133266-S39733966572002041200000) table. Turn ignition off and remove jumper wire.
4. If fuel pressure is too high, check for restricted return line. If return line is open, replace pressure regulator. To replace fuel pressure regulator, see FUEL PRESSURE REGULATOR under FUEL SYSTEM in REMOVAL, OVERHAUL & INSTALLATION article.
5. If fuel pressure is too low, block return line. Operate fuel pump again and see if pressure rises. If pressure rises, replace fuel pressure regulator. To replace fuel pressure regulator, see FUEL PRESSURE REGULATOR under FUEL SYSTEM in REMOVAL, OVERHAUL & INSTALLATION article. If pressure does not rise, check fuel pump maximum pressure. See «MAXIMUM FUEL PRESSURE (RIO & SPECTRA)»(ref-133266-S18548192322002052100000).

Scheme 89

Fuel Pressure (Sportage)

1. Release fuel pressure. See «FUEL PRESSURE RELEASE»(ref-133266-S28650298702002052100000). Disconnect battery negative cable. Install fuel pressure gauge on service fuel rail near fuel filter. (Scheme 92) Connect battery negative cable.
2. Using fuel pump check terminal connector, operate fuel pump and ensure no fuel leakage is present at pressure gauge or connection. See «PRIMING FUEL SYSTEM»(ref-133266-S30125162592002052100000).
3. Start engine and allow it to idle. Disconnect vacuum hose from pressure regulator, and plug hose end, Measure and record fuel pressure at idle. Reconnect vacuum hose, and again measure and record fuel pressure. See «FUEL PRESSURE SPECIFICATIONS»(ref-133266-S39733966572002041200000) table. If pressure is not as specified, check fuel line and filter for restrictions. For fuel filter location, removal & installation, see FUEL FILTER under FUEL SYSTEM in REMOVAL, OVERHAUL & INSTALLATION article. Also check holding fuel pressure and maximum fuel pressure. See «HOLDING FUEL PRESSURE (SPORTAGE)»(ref-133266-S18349744632002052100000) and «MAXIMUM FUEL PRESSURE (SPORTAGE)»(ref-133266-S26376151262002052100000) test.

Scheme 90

Holding Fuel Pressure (Rio & Spectra)

1. Release fuel pressure. See «FUEL PRESSURE RELEASE»(ref-133266-S28650298702002052100000). Disconnect battery negative cable. Install fuel pressure gauge on to high-pressure fuel line. For Rio (Scheme 89) And for Spectra (Scheme 91) Connect battery negative cable.
2. Jumper DLC terminals FUEL PUMP and (B+). DLC is located on left side of engine compartment. (Scheme 85) Turn ignition on for 10 seconds or less to operate fuel pump and pressurize system. Turn ignition off and remove jumper wire.
3. On Rio, check fuel pressure after 25 minutes. On Spectra, check fuel pressure after 15 minutes. See «FUEL PRESSURE SPECIFICATIONS»(ref-133266-S39733966572002041200000) table. If pressure is not as specified, check fuel pump, pressure regulator and injectors.

Holding Fuel Pressure (Sportage)

1. Release fuel pressure. See «FUEL PRESSURE RELEASE»(ref-133266-S28650298702002052100000). Disconnect battery negative cable. Install fuel pressure gauge on service port at front of fuel rail. Connect battery negative cable.
2. Jumper DLC terminals FUEL PUMP and (B+). DLC is located on left side of engine compartment. (Scheme 85) Turn ignition on for 10 seconds or less to operate fuel pump and pressurize system. Turn ignition off and remove jumper wire.
3. Pinch off fuel return hose at pressure regulator. Observe fuel pressure for 5 minutes. It should stay above specified pressure. See «FUEL PRESSURE SPECIFICATIONS»(ref-133266-S39733966572002041200000) table. If pressure drops below specification, replace pressure regulator. To replace fuel pressure regulator, see FUEL PRESSURE REGULATOR under FUEL SYSTEM in REMOVAL, OVERHAUL & INSTALLATION article. Also check fuel pump and injectors.

MAXIMUM FUEL PRESSURE

Note. Maximum fuel pressure specification and test procedure for Optima, Magentis (Canadian) and Sedona is not available from manufacturer.

Maximum Fuel Pressure (Rio & Spectra)

1. Release fuel pressure. See «FUEL PRESSURE RELEASE»(ref-133266-S28650298702002052100000). Disconnect battery negative cable. Remove rear seat cushion. Connect Fuel Pressure Gauge (0K2A1 131 001) to main fuel line at fuel tank. see scheme 49 Connect battery negative cable.
2. To operate fuel pump, jumper DLC terminals FUEL PUMP and (B+). DLC is located on left side of engine compartment. (Scheme 85) Turn ignition on. Check maximum fuel pressure. Do not run fuel pump longer than necessary to check fuel pressure. See «FUEL PRESSURE SPECIFICATIONS»(ref-133266-S39733966572002041200000) table. If fuel pressure is not as specified, replace fuel pump. To replace fuel pump, see FUEL PUMP under FUEL SYSTEM in REMOVAL, OVERHAUL & INSTALLATION article.

Scheme 91

Maximum Fuel Pressure (Sportage)

1. Release fuel pressure. See «FUEL PRESSURE RELEASE»(ref-133266-S28650298702002052100000). Disconnect battery negative cable. Connect fuel pressure gauge to fuel filter and plug outlet of gauge, install clamps as shown see scheme 50 Connect battery negative cable.
2. To operate fuel pump, jumper DLC terminals FUEL PUMP and (B+). DLC is located on left side of engine compartment. (Scheme 85) Turn ignition on. Measure maximum fuel pressure. Do not operate fuel pump longer than necessary to check fuel pressure. See «FUEL PRESSURE SPECIFICATIONS»(ref-133266-S39733966572002041200000) table. Turn ignition off and remove jumper wire. If pressure is not as specified, replace fuel pump. To replace fuel pump, see FUEL PUMP under FUEL SYSTEM in REMOVAL, OVERHAUL & INSTALLATION article.

Scheme 92

FUEL PRESSURE SPECIFICATIONS

SPARK

Note. All model are equipped with a Distributorless Ignition System (DIS).

Note. Ensure high tension leads are routed properly after removal and installation.

Check for spark at each spark plug wire using a high output spark tester. Check spark plug wire resistance on suspect wires. High tension wire resistance should not exceed 16,000 ohms per 3.3 feet.

Camshaft Position Sensor (CMP) sensor detects No. 1 piston at TDC of compression stroke. ECM uses input for fuel and ignition control. For CMP sensor testing, see CAMSHAFT POSITION SENSOR .

Crankshaft Position Sensor (CKP) sensor detects crankshaft angle. ECM uses input to determine engine speed, misfire detection, and for fuel and ignition control. For CKP sensor testing, see CRANKSHAFT POSITION SENSOR .

IGNITION COIL POWER SOURCE

Ensure ignition is off. Disconnect ignition coil harness connectors. Turn ignition on. Check for battery voltage at ignition power source wire. To identify wire, see IGNITION COIL POWER SOURCE table. On all models, if battery voltage is not present, check battery feed circuit, main fuse, ignition switch and wiring harness.

IGNITION COIL POWER SOURCE

Optima, Magentis (Canadian) 2.4L & Sedona

Note. Power transistor is built into ignition coil.

To perform primary coil resistance check, connect negative (-) terminal of a 3 volt power supply to terminal No. 2 of power transistor. (Scheme 95) Check for continuity, about.78 Ohm, between terminals No. 2 and 3. Continuity should exist when terminal No. 1 is connected to 3 volt power (+) supply. When 3 volt power supply is removed, continuity should no longer exist. If problem exists, replace power transistor/ignition coil. To test secondary resistance measure resistance between high-voltage terminals of ignition coil (Scheme 95) For resistance specification, see IGNITION COIL RESISTANCE table.

Scheme 93

Optima & Magentis (Canadian) 2.7L

Measure resistance between connector terminals No. 1 and 2, 1 and 3 and 1 and 4. (Scheme 96) For ignition coil resistance, see IGNITION COIL RESISTANCE table. If resistance is not as specified, replace coil pack.

Scheme 94

Rio, Spectra & Sportage

To check primary coil resistance, disconnect ignition coil harness connector. Using ohmmeter, check primary resistance between positive (+) and negative (-) terminal of coil or coil pack. Check secondary resistance between coil towers. For resistance check procedure on Rio (Scheme 97) For Spectra and Sportage resistance check procedure (Scheme 98) And see IGNITION COIL RESISTANCE table for resistance specification. If readings are not within specification, replace ignition coil(s).

Scheme 95

Scheme 96

IGNITION COIL RESISTANCE - Ohms @ 68°F (20°C)

EXHAUST GAS RECIRCULATION SYSTEM (OPTIMA & MAGENTIS (CANADIAN) 2.4L)

Note. For component identification and location (Scheme 99)- (Scheme 100).

1. Exhaust Gas Recirculation (EGR) system is operated by ECM during coasting. ECM activates EGR solenoid valve allowing intake vacuum to EGR valve. The manifold pressure is measured before and after EGR valve has been activated and the corresponding pressure variation is compared with reference value to detect a EGR system malfunction. If malfunction is detected, go to next step.
2. Check all EGR system vacuum hoses, pipe and passage for damage, blockage or restriction between: Throttle body to EGR solenoid valve vacuum hose. EGR solenoid valve to EGR valve vacuum hose. EGR valve to exhaust manifold pipe. EGR valve to intake manifold passage. If malfunction is found, repair or replace as necessary. If no malfunction is found, go to next step.
3. Check EGR valve operation. For EGR valve operation, see «EXHAUST GAS RECIRCULATION VALVE»(ref-133266-S30119767352002022000000) . If EGR valve malfunction is found, repair or replace as necessary. If no malfunction is found, go to next step.
4. Check EGR solenoid valve operation. For EGR solenoid valve operation, see «EXHAUST GAS RECIRCULATION SOLENOID VALVE»(ref-133266-S16843812552002022000000) . If EGR solenoid valve malfunction is found, repair or replace as necessary. If no malfunction is found, go to next step.
5. For more EGR system circuit testing procedure, and check other systems related to EGR system. See appropriate SELF-DIAGNOSTICS article.

Scheme 97

Scheme 98

EXHAUST GAS RECIRCULATION VALVE (OPTIMA & MAGENTIS (CANADIAN) 2.4L)

Note. For Exhaust Gas Recirculation (EGR) valve removal and installation, see EXHAUST GAS RECIRCULATION VALVE under EMISSION SYSTEMS & SUB-SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION article.

1. Connect vacuum pump to EGR valve fitting port. Apply vacuum to EGR valve and observe if vacuum is held. (Scheme 101) If vacuum is held, go to next step. If vacuum is not held, replace EGR valve.
2. While vacuum pump is connected to EGR valve fitting port. Start engine and let it idle. Apply vacuum and observe for idle changes. If idle change is observe, EGR valve is operating properly. If no idle change is notice, turn engine off and go to next step.
3. Remove EGR valve, check for excessive carbon deposit. Connect vacuum pump to EGR valve fitting port. Apply vacuum and ensure EGR valve moves freely, blow air into exhaust pipe port, while vacuum is apply. see scheme 61 Air should go through and out intake port. While blowing air into exhaust pipe port, release vacuum and ensure no air passes through. If malfunction is found, repair or replace EGR valve as necessary.

Scheme 99

Scheme 100

EXHAUST GAS RECIRCULATION SOLENOID VALVE (OPTIMA & MAGENTIS (CANADIAN) 2.4L)

Note. Only component testing procedure is covered. For Exhaust Gas Recirculation (EGR) solenoid valve system and circuit testing procedure, see appropriate SELF-DIAGNOSTICS article.

Note. For EGR solenoid valve removal and installation, see EXHAUST GAS RECIRCULATION SOLENOID VALVE under EMISSION SYSTEMS & SUB-SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION article.

1. Disconnect EGR solenoid valve 2-pin harness connector. Check resistance between EGR solenoid valve terminals. See test procedure No. 1 in (Scheme 102). Resistance should be 24-28 ohms at 68°F (20°C). If resistance is not as specified, replace EGR solenoid valve. If resistance is as specified, go to next step.
2. Using a fused jumper wire, connect battery voltage to terminal No.1, energize EGR solenoid by grounding terminal No. 2. Listen for operational sound (click). Seetest procedure No. 2 in (Scheme 102). If operational sound is heard, go to next step. If operational sound is not heard, replace EGR solenoid valve.
3. Connect vacuum pump to port "A" of EGR solenoid valve. While EGR solenoid valve is operated by battery power, Apply vacuum. See test procedure No. 3 in (Scheme 102). If vacuum is not held, EGR solenoid valve is operating properly. If vacuum is held, replace EGR solenoid valve.

Scheme 101

FUEL EVAPORATION SYSTEM

Note. Only component testing procedure is covered. For component system and circuit testing procedure, see appropriate SELF-DIAGNOSTICS article.

Note. For component removal and installation, see appropriate component under EMISSION SYSTEMS & SUB-SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION article.

Canister Close Valve

1. Canister Close Valve (CCV) is located near EVAP canister. Measure resistance between CCV terminals. Resistance should be 23-26 ohms at 68°F (20°C). (Scheme 104)test procedure No. 1. If resistance is not as specified, replace CCV. If resistance is as specified, go to next step.
2. Remove CCV. CCV should be open. Blow air into port "A" and verify air escapes from port "B". Close CCV using a fused jumper wire connect to battery voltage and terminal No.1, and grounding terminal No. 2. (Scheme 104)test procedure No.2. Blow air into port "A" and verify air does not escape from port "B". If air does not escape from port "B", CCV is operating properly. If air escapes from port "B" replace CCV.

Scheme 102

Evaporative Emissions Canister

Check for loose connections, sharp bends or damage fuel vapor lines, canister cracks or fuel leakage. Repair or replace as necessary. No liquid should exist in Evaporative Emissions Canister (EVAP) canister. For EVAP Canister location, see EVAPORATIVE EMISSIONS CANISTER LOCATION table.

EVAPORATIVE EMISSIONS CANISTER LOCATION

On-Board Refueling Vapor Recovery

Note. For on-board refueling vapor recovery system, only some component testing procedures are available from manufacturer.

On-Board Refueling Vapor Recovery (ORVR) system, is properly designed to prevent the fuel tank vapor emissions (HC), escape to ambient air during refueling.

This system consists of fuel filler neck, fuel vent valve, fuel shot-off valve, fuel cut valve (roll over), two way valve, fuel liquid/vapor separator and charcoal canister. For component identification (Scheme 103)

While refueling, flow and column of refueling draws ambient air into filler pipe so fuel vapor is not emitted in the ambient air. Fuel vapor in tank is then forced to flow into canister via fuel vent valve and fuel liquid/vapor separator, which insulates liquid fuel ingredients and transfer pure vapor into charcoal canister.

While engine is operating, trapped vapor emissions in canister is draw and fed by intake manifold vacuum into engine combustion chamber. According to this process, charcoal canister is purged and recovers its absorbing capability.

Purge Control Solenoid Valve (Optima, Magentis (Canadian) 2.7L, Rio, Spectra & Sportage)

1. Disconnect Purge Control Solenoid Valve (PCSV) 2-pin harness connector. To locate PCSV (Scheme 105)- (Scheme 107). Measure resistance between two terminals (component side). Seetest procedure No. 1 in (Scheme 108). Resistance should be 24-28 ohms at 68°F (20°C). If resistance is not as specified, replace PCSV. If resistance is as specified, go to next step.
2. Remove PCSV. Blow air into port "A" and verify air does not escape from port "B", PCSV should be closed. Open PCSV by jumpering one PCSV terminal to battery positive terminal. Jumper other PCSV terminal to battery negative terminal. See test procedure No. 2 in (Scheme 108). Blow air into port "A" and verify air escapes from port "B". If air escapes from port "B" when PCSV is closed and/or does not escape when PCSV is open, replace PCSV.

Scheme 103

Scheme 104

Scheme 105

Scheme 106

Purge Control Solenoid Valve (Optima, Magentis (Canadian) 2.4L & Sedona)

1. Disconnect Purge Control Solenoid Valve (PCSV) 2-pin harness connector. To locate PCSV (Scheme 109)and (Scheme 110). Measure resistance between two terminals (component side). Seetest procedure No. 1 in (Scheme 111). Resistance should be 23-26 ohms at 68°F (20°C). If resistance is not as specified, replace PCSV. If resistance is as specified, go to next step.
2. Remove PCSV. PCSV is normally closed. Connect a vacuum pump to PCSV port "A" and apply vacuum, vacuum should be held. While applying vacuum, open PCSV by jumpering one PCSV terminal to battery positive terminal. Jumper other PCSV terminal to battery negative terminal. Seetest procedure No. 2 in (Scheme 111). Check if vacuum is released when PCSV is open. If problem exists, replace PCSV.

Scheme 107

Scheme 108

Scheme 109

Two-Way Valve (Overfill Limiter)

1. Two-Way valve consist of a pressure valve and a vacuum valve. Pressure valve side is designed to open when fuel tank internal pressure has increased over normal pressure, and vacuum valve side opens when vacuum has been produced in fuel tank. For Two-Way valve identification see scheme 72 For valve test, go to next step.
2. Connect vacuum pump to inlet side of Two-Way valve. see scheme 73 Apply vacuum, negative pressure is generated and vacuum should be held. If vacuum is not held, replace Two-Way valve. If vacuum is held, go to next step.
3. Connect vacuum pump to outlet side of Two-Way valve. Apply vacuum, negative pressure should not be generated. If is negative pressure is generated, replace Two-Way valve as necessary.

Scheme 110

Scheme 111