1989-Mitsu-Factory Manual · mpi system · страница 27 из 48 · Открыть оригинал PDF ↗
| Chk itm | Che | ck description | Probable cause of malfunction (or | |
|---|---|---|---|---|
| ec es | Check cond | itions | Normal value | action) |
| Oxygen sensor l Data reading D Item No. 17 | l Engine warm-up (Using the oxygen sensor signal, check the air/fuel mixture ratio, and also check the condition of control by the engine control unit.) | Engine speed (rpm.) 700 (idle) 2.000 | Voltage (mV) 400 or lower : (changes) 600-I ,000 | l If the oxygen sensor signal is normal, the engine control unit is regulating the air/fuel mixture ratio normally. l If the oxygen sensor output voltage is low at all times, check whether OI not there is intake of air. l If the oxygen sensor output voltage is high at all times, check for leakage of the injector. |
| Air flow sensor l Data reading | l Engine warm-up | Engine condition | Frequency (Hz) | l If the air flow sensor output frequency suddenly changes |
| l Item No. 12 | 700 rpm (Idling) | 25-45 | greatly, improper contact ofthe air flow sensor or connector is probable. | |
| 2,000 rpm | 85-105 | l If the output frequency of the air flow sensor is unusually high or low | ||
| Racing | Increase | c&eck the air cleaner element. l If the output frequency of the air | ||
| D Data reading It N 13 | l Malfunction of intake air | |||
| l em o. | ||||
| ensor or related | ||||
| the fixed SAS. |
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