Pajero II Workshop Manual 1991 · FUEL · страница 94 из 339 · Открыть оригинал PDF ↗
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TROUBLE DIAGNOSIS QUICK REFERENCE CHART
Таблица в оригинале
Распознанный текст таблицы — требует сверки с оригиналом
| Trouble code No. | Diagnosis item | Description | Major cause | Remarks (Symptoms, etc ) |
|---|---|---|---|---|
| Engine control unit | Trouble in engine control unit itself | Engine stalls Engine cannot be started. | ||
| 11 | Oxygen sensor | Air-fuel ratio feedback control (closed loop control) is in effect but oxygen sensor signal voltage does not | Defective oxygen sensor 21 Open or short circuit in oxygen sensor circuit, Or connector in loose contact | Poor exhaust emission purifying performance |
| change (air-fuel mixture lean/rich), | Improper fuel pressure Defective injector Air drawn in through gasket clearance, etc. (6) Defective engine control unit | Poor exhaust emission purifying performance Poor startability Unstable idling Poor acceleration | ||
| 12 | Air flow sensor | Air flow sensor signal frequency 1OHz or less even with engine running | Defective air flow sensor (2) Open or short circuit in air flow sensor circuit, Or connector in loose contact Defective engine control unit | Poor acceleration Improper idling speed Unstable idling |
| 13 | Intake air temperature sensor | (1) Intake air tempera ture sensor signal voltage over 4.5V (2) Intake air tempera- ture sensor signal voltage less than 0.27v | Defective intake air temperature sensor (2) Open or short circuit in intake air temperature sensor circuit, connector in loose contact or Defective engine control unit | Somewhat poor driveability At high tempera- tures Poor startability (b) Unstable idling |
| 14 | Throttle posi- tion sensor | Throttle position sensor signal voltage less than 0.2v (2) Throttle position signal sensor | Throttle position sensor out of order or maladjusted (2) Open or short circuit in throttle position sensor circuit, connector in poor contact | Somewhat poor acceleration Engine stalls |
| voltage over 2V even with idle position switch at ON | (3) Idle position switch ON failure (4) Short circuit in idle position signal line (5) Defective engine control unit | Engine stalls. Engine cannot be raced, |
NOTE
Failsafelbackup function is in operation.
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