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Engine Controls - Self-Diagnostics: Other Hyundai Tiburon I рестайлинг

Testing & Diagnostics ~3015 words

Failure Conditions

  1. ECM will set DTC P0102 and illuminate MIL when sensor output indicates an open circuit, or airflow less than 0.5 grams per second for 0.5 second with an engine speed greater than 200 RPM during 2 drive cycles. DTC indicates an unusually low airflow rate being read by MAF sensor or ECM.
  2. ECM will set DTC P0103 and illuminate MIL when sensor output indicates an airflow exceeding expected flow by more than 2 grams per second for 0.5 second during 2 drive cycles. DTC indicates an unusually high airflow rate being read by MAF sensor or ECM.
  1. ECM will set DTC P0112 and illuminate MIL when sensor output indicates a temperature less than -49°F (-45°C) for 0.2 second during 2 drive cycles. ECM will check IAT sensor when engine has operated 4 minutes, 10 seconds and then idles for 30 seconds with no fuel cut-off during a coast-down. DTC indicates a temperature detected by IAT and ECM that is less than expected after engine is warmed up.
  2. ECM will set DTC P0113 and illuminate MIL when sensor output indicates a temperature more than 284°F (140°C) for 0.2 second during 2 drive cycles. ECM will check IAT sensor when engine has operated 4 minutes, 10 seconds and then idles for 30 seconds with no fuel cut-off during a coast-down. DTC indicates a temperature detected by IAT and ECM that is more than expected after engine is warmed up.
  1. ECM will set DTC P0116 and illuminate MIL during 2 drive cycles when: ECT sensor reports an out of range temperature that is less than -49°F (-45°C) or more than 284°F (140°C) for 0.2 second. ECT sensor performance curve temperature decreases more than 68°F (20°C) less than ECM model curve for 0.2 second. ECM model curve is based on fuel delivery, ambient air temperature and engine operating time.
  2. ECM will set DTC P0117 and illuminate MIL when sensor output indicates a temperature less than -49°F (-45°C) for 0.2 second during 2 drive cycles.
  3. ECM will set DTC P0118 and illuminate MIL when sensor output indicates a temperature more than 284°F (140°C) for 0.2 second during 2 drive cycles.
  1. ECM will set DTC P0121 and illuminate MIL when engine load indicated by Throttle Position (TP) sensor and Mass Airflow (MAF) sensor are different. Indicated values from TP and MAF sensors or ECM do not result in an expected engine load value.
  2. ECM will set DTC P0122 and illuminate MIL when TP sensor signal decreases 40 percent less than a preprogrammed value stored in ECM (based on engine load) for more than 0.2 second.
  3. ECM will set DTC P0123 and illuminate MIL when TP sensor signal increases 130 percent more than a preprogrammed value stored in ECM (based on engine load) for more than 0.2 second.
  1. ECM will set DTC P0130 and illuminate MIL when detected front HO2S output is not -80.0-380.0 mV (-0.08-0.38 volt) when rear HO2S output is more than 500.0 mV (0.5 volt) during 2 drive cycles. Once during each drive cycle, ECM will check front HO2S output voltage for 5 seconds. This DTC indicates abnormal front HO2S operation is being read by ECM.
  2. ECM will set DTC P0136 and illuminate MIL when detected rear HO2S output is not 400-500 mV (0.4-0.5 volt) after system is in closed-loop operation during 2 drive cycles. This DTC indicates an abnormal reading by rear HO2S or ECM after engine has operated at normal operating temperature for 3 minutes.
  1. ECM will set DTC P0131 and illuminate MIL when detected front HO2S output voltage decreases to less than -128 mV (-0.128 volt) for 0.5 second during 2 drive cycles. After front HO2S heater has operated for 3 minutes and 20 seconds, ECM will begin monitoring HO2S output voltage every 0.5 second. This DTC indicates an unusually lean air fuel mixture being detected by front HO2S or ECM.
  2. ECM will set DTC P0137 and illuminate MIL when detected rear HO2S output voltage decreases to less than -128 mV (-0.128 volt) for 0.5 second during 2 drive cycles. After system is in closed-loop and engine has operated for 3 minutes, ECM will monitor HO2S output voltage for 0.5 second. This DTC indicates an extremely low voltage detected by rear HO2S or ECM.
  1. ECM will set DTC P0132 and illuminate MIL when detected front HO2S output voltage increases to more than 1.058 volts for 0.5 second during 2 drive cycles. After front HO2S heater has operated for 3 minutes and 20 seconds, ECM will begin monitoring HO2S output voltage every 0.5 second. This DTC indicates an extremely rich air fuel mixture being detected by front HO2S or ECM.
  2. ECM will set DTC P0138 and illuminate MIL when detected rear HO2S output voltage increases to more than 1.058 volts for 0.5 second during 2 drive cycles. After system is in closed-loop and engine has operated for 3 minutes and 20 seconds, ECM will monitor HO2S output voltage for 0.5 second. This DTC indicates an extremely high voltage detected by rear HO2S or ECM.
  1. ECM will set DTC P0133 and illuminate MIL when ECM does not sense the following condition during 2 drive cycles: Over a period of 2.3 seconds, ECM must detect 10 cycles from lean-to-rich or rich-to-lean when engine speed is 2000-3000 RPM, engine load range is 1.9-4.7 milliseconds, catalytic converter temperature is more than 673°F (356°C) and system is in closed loop. ECM must make some correction in air fuel ratio within 133 seconds when engine speed is 1600-2400 RPM, engine load range is 1.35-1.80 milliseconds, catalytic converter temperature is more than 673°F (356°C) and system is in closed loop. DTC P0133 indicates engine air fuel ratio is not being adjusted by front HO2S signal or ECM as expected, or as often as expected when engine is at normal operating temperature or normal use.
  2. ECM will check rear HO2S operation after engine has operated for 3 minutes and 20 seconds. ECM will measure front HO2S output voltage when rear HO2S output voltage is more than 500 mV (0.5 volt). ECM will set DTC P0134 and illuminate MIL, if during 2 drive cycles the front HO2S output voltage is not 400-600 mV (0.4-0.6 volt) for 5 seconds. This DTC indicates front HO2S is not active within expected range once the engine is at normal operating temperature.
  1. ECM will set DTC P0135 and illuminate MIL when ECM detects front HO2S heater circuit resistance that is less than 4.6 ohms, or more than 19.5 ohms, during 2 drive cycles. After engine has operated for 3 minutes, ECM will begin monitoring front HO2S heater circuit. This DTC indicates an unusually high or low resistance in heater circuit being monitored by ECM or front HO2S.
  2. ECM will set DTC P0141 and illuminate MIL when ECM detects rear HO2S heater circuit resistance that is less than 4.6 ohms, or more than 19.5 ohms, during 2 drive cycles. After engine has operated for 3 minutes, ECM will begin monitoring rear HO2S heater circuit. This DTC indicates an unusually high or low resistance in heater circuit being monitored by ECM or front HO2S.

ECM will set a DTC and illuminate the MIL if an open circuit, short to ground or a short to battery voltage is detected in a fuel injector circuit during 2 drive cycles.

Failure Conditions (Elantra & Tiburon)

ECM will set a DTC P0300 and illuminate the MIL if 2 misfires per 100 engine revolutions are detected during 2 drive cycles. The misfire rate is measured every 200 revolutions when the following conditions are met

  1. Engine has been running for more than 5 seconds.
  2. Engine speed is 600-4000 RPM.
  3. Engine load time is greater than 2.3 mS.
  4. Throttle is closed during deceleration.
  5. Transaxle is not shifting.
  6. Vehicle is on a smooth road (acceleration sensor reports less than 0.2 g acceleration).

When misfire rate increases, there is a danger of catalytic converter damage and MIL will blink on and off. Catalytic converter temperature could exceed 3542°F (1950°C) if misfire rate increases sufficiently. This DTC indicates a problem with cylinder ignition being read by ECM.

ECM will set DTC P0301, P0302, P0303 or P0304 and illuminate the MIL if 2 misfires per 100 engine revolutions are detected during 2 drive cycles. The misfire rate is measured every 200 revolutions when the following conditions are met

  1. Engine has been operating for more than 5 seconds.
  2. Engine speed is 600-4000 RPM.
  3. Engine load time is greater than 2.3 mS.
  4. Throttle is closed during deceleration.
  5. Transaxle is not shifting.
  6. Vehicle is on smooth road (acceleration sensor reports less than 0.2 g acceleration).

When misfire rate increases, there is a danger of catalytic converter damage and MIL will blink on and off. Catalytic converter temperature could exceed 3542°F (1950°C) if misfire rate increases sufficiently. This DTC indicates a problem with a specific cylinder ignition being read by ECM.

ECM will set DTC P0326 and MIL will not be illuminated if knock sensor output voltage is less than 650 mV (0.65 volt) during 2 drive cycles. ECM will perform a 4 second check when the

  1. Starter is not engaged.
  2. Engine speed is more than 2520 RPM.
  3. Engine coolant temperature is more than 122°F (50°C).
  4. Engine load is greater than 2.5 mS.

This DTC indicates an unexpected vibration is being detected by knock sensor or ECM under normal engine operation.

  1. ECM will set DTC P0335 and MIL will be illuminated if CKP signal voltage is zero with starter engaged for 4 seconds or 8 revolutions and CMP sensor signal indicates engine rotation. ECM performs this check every time engine is started. DTC P0335 indicates that there is no CKP signal detected by CKP sensor or ECM when CMP sensor signal verifies engine rotation.
  2. ECM will set DTC P0336 and MIL will be illuminated immediately if CKP sensor signal does not indicate 2 missing teeth in exactly the same location on tone wheel during 2 successive engine revolutions. ECM performs this check for 5 seconds when engine is operating at more than 2000 RPM. DTC P0336 indicates a problem with crankshaft being read by CKP sensor or ECM.
  1. ECM will set DTC P0342 and MIL will be illuminated if there is more than one CMP sensor signal during 2 engine revolutions when engine speed is more than 760 RPM during 2 drive cycles. This DTC indicates an unexpected camshaft position reading by CMP or ECM when engine is rotating.
  2. ECM will set DTC P0343 and MIL will be illuminated if there is no CMP sensor signal within 200 engine revolutions when engine speed is more than 760 RPM during 2 drive cycles. This DTC indicates an unexpected camshaft position reading by CMP or ECM when engine is rotating.

Catalytic converter efficiency is determined by comparing front and rear HO2S signals. ECM will set a DTC and illuminate MIL if front and rear HO2S signals are similar more than 60 percent of the time during 2 of 4, 170-second monitoring periods during 2 drive cycles. ECM measure HO2S output signals when the following conditions are met

  1. ECM is operating in closed loop.
  2. Engine speed is 1800-3200 RPM.
  3. Catalytic converter temperature is more than 702°F (372°C).
  4. Fuel vapor canister purge function is more than 0.9.
  5. Vehicle is not shifting gears.
  6. Engine load time is 1.4-4.5 mS.

This DTC indicates that catalytic converter has been found to have a low efficiency according to the readings of front and rear HO2S.

  1. ECM will set DTC P0441 and illuminate MIL if detected EVAP system purge flow rate is incorrect.
  2. ECM will set DTC P0442 and illuminate MIL if a leak is detected in EVAP system.
  3. ECM will set DTC P0443 and illuminate MIL if a Purge Control Solenoid Valve (PCSV) malfunction is detected.
  4. ECM will set DTC P0455 and illuminate MIL if purge control valve is stuck open creating a leak.
  1. ECM will set DTC P0444 and illuminate MIL if an open circuit is detected in driver stage of EVAP system purge control solenoid circuit during 2 drive cycles.
  2. ECM will set DTC P0445 and illuminate MIL if a short circuit is detected in driver stage of EVAP system purge control solenoid circuit during 2 drive cycles.
  1. ECM will set DTC P0446 and illuminate MIL if pressure differential is less than 0.09 psi (.006 kg/cm 2 ) when tested during 2 drive cycles. DTC indicates there is no difference in pressure inside or outside EVAP canister, or that close valve is not operating properly.
  2. ECM will set DTC P0447 and illuminate MIL if a short to ground is detected in EVAP canister close valve circuit during 2 drive cycles.
  3. ECM will set DTC P0448 and illuminate MIL if a short to battery voltage is detected in EVAP canister close valve circuit during 2 drive cycles.
  1. ECM will set DTC P0451 and illuminate MIL if pressure differential varies more than 0.1 psi (.007 kg/cm 2 ) within 1.5 seconds over a 15-second sampling time during 2 drive cycles when the following conditions are met: Pressure difference between fuel tank and atmosphere is more than -0.02 psi (-.0014 kg/cm 2 ). EVAP control system is fully closed. Engine is idling. Engine coolant temperature is more than 20°F (-7°C). Barometric pressure sensor indicates an altitude of not more than 8000 feet. Fuel tank vapor content is less than 0.03 psi (0.002 kg/cm 2 ). Fuel tank is at least 15 percent full. This DTC indicates a sudden change in fuel tank pressure being read by fuel tank pressure sensor or ECM.
  2. ECM will set DTC P0452 and illuminate MIL if difference between fuel tank pressure and ambient atmospheric pressure is less than -0.4 psi (-0.028 kg/cm 2 ) during 2 drive cycles. This DTC indicates an extremely large difference between fuel tank pressure and ambient pressure is being read by fuel tank pressure sensor or ECM.
  3. ECM will set DTC P0453 and illuminate MIL if difference fuel tank pressure and ambient atmospheric pressure is more than 0.4 psi (0.028 kg/cm 2 ) during 2 drive cycles. This DTC indicates an extremely large difference between fuel tank pressure and ambient pressure being read by fuel tank pressure sensor or ECM.

ECM will set DTC P0501 and illuminate MIL if there is no vehicle speed sensor output signal for 9 seconds during 2 drive cycles when the following conditions are met

  1. Engine speed is more than 2200 RPM.
  2. Engine load is more than 3.0 mS.

This DTC indicates no speed signal is being read by vehicle speed sensor or ECM.

Fault Conditions

ECM will set DTC and illuminate MIL if for 15 seconds (P0506) or for 8 seconds (P0507) ISC actuator driver circuit values and engine idle speed are not in agreement with values stored in ECM during 2 drive cycles when the following conditions are met

  1. ISC actuator passes idle air at a rate greater than 3.3 grams per second (P0506) or 2.2 grams per second (P0507).
  2. Engine speed deviation is less than 100 RPM (P0506) or 200 RPM (P0507).
  3. Vehicle speed is zero.
  4. Engine coolant temperature is more than 167°F (75°C).

This DTC indicates the idle speed control actuator and engine do not agree with ECM on idle speed value.

Failure Conditions Short-Term Fuel Trim

ECM will set DTC and illuminate MIL if short-term fuel trim value goes 10-15 percent rich (P1123) or if short-term fuel trim value goes 10-15 percent lean (P1124) for 30 seconds during 2 drive cycles. DTC P1123 or P1124 will be set when the following conditions are met

  1. ECM is in closed loop operation.
  2. Engine speed is less than 1000 RPM.
  3. Engine coolant temperature is more than 158°F (70°C).
  4. EVAP canister purge system is not operating.
  5. Mass airflow is less than 6.6 grams per second.

Failure Conditions Long-Term Fuel Trim

ECM will set DTC and illuminate MIL if long-term trim value goes 10-15 percent rich (P1127) or lean (P1128) for 30 seconds during 2 drive cycles. DTC P1127 or P1128 will be set when the following conditions are met

  1. Engine load exceeds 2.0 mS.
  2. Engine speed is less than 1000 RPM.
  3. Engine coolant temperature is more than 158°F (70°C).
  4. EVAP canister purge system is not operating.
  5. Mass airflow is 5.5 grams per second or less.
  1. ECM will set DTC P1510 and illuminate MIL if ISC actuator opening coil driver stage is shorted to battery voltage during 2 drive cycles.
  2. ECM will set DTC P1552 and illuminate MIL if ISC actuator closing coil driver stage is shorted to battery voltage during 2 drive cycles.
  1. ECM will set DTC P1513 and illuminate MIL if ISC actuator opening coil driver stage circuit is open or shorted to ground during 2 drive cycles.
  2. ECM will set DTC P1553 and illuminate MIL if ISC actuator closing coil driver stage circuit is open or shorted to ground during 2 drive cycles.
  1. ECM will set DTC P1605 and illuminate MIL if acceleration sensor signal is less than 1.5 volts or more than 3.5 volts during 2 drive cycles. This DTC indicates an extremely rough or smooth road being sensed by the acceleration sensor or ECM.
  2. ECM will set DTC P1606 and illuminate MIL if acceleration sensor signal indicates an acceleration of 0.3 g or more when vehicle speed is zero during 2 drive cycles. This DTC indicates some type of bump being read by acceleration sensor or ECM when vehicle speed is zero.
  1. ECM will set DTC P1611 and illuminate MIL if available voltage is less than 80 percent of battery voltage during 2 drive cycles. ECM makes this check once per trip for 6 seconds after engine speed has increased to more than 240 RPM. This code indicates that lower than expected voltage is being read at the request circuit by ECM.
  2. ECM will set DTC P1613 and illuminate MIL if available voltage is more than 120 percent of battery voltage during 2 drive cycles. ECM makes this check once per trip when Data Link Connector (DLC) terminal No. 15 ("L" data line) is ON and engine speed is less than 800 RPM. This code indicates that higher than expected voltage is being read at the request circuit by ECM.

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