Диагностика и устранение неисправностей · 15 — Pajero II 1991–1998 — руководство по ремонту

Диагностика и устранение неисправностей · 15

TROUBLESHOOTING · 15

1998 · FUEL [13] · страница 15 из 104 · Открыть оригинал PDF ↗

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LIST OF FAIL-SAFEIBACK-UP FUNCTIONS

When the failure ofa major Sensor is detected by the self diagnosis functions, the preset control logic
provides controls to assure safe operation of the vehicle:

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Распознанный текст таблицы — требует сверки с оригиналом
Trouble itemControls to be provided in the event of trouble
Air flow sensortimingand basic ignition timing read from the preset map based on the
Injector basic drive
throttle position sensor (TPS) signal and engine speed signal (crank angle sensor signal)
idlingspeed control
(2) Idle speed control servo fixed at predetermined position, and no
achieved_
Intake air tempera-
ture sensor
Controls provided on the assumption that intake air temperature is 25*C
Throttle position
sensor: (TPS)
No additional fuel injection provided on the basis of throttle position sensor signal at accelera-
tion
Engine coolant
temperature sensor
Controls provided on the assumption that engine coolant temperature is 80PC
(Even if the sensor signal returns to normal, this control mode is retained until the ignition
switch is set to OFF,)
Cam position
sensor
(1) Fuel injected into all cylinders simultaneously
(Provided that no No. 1 cylinder top dead center has been detected since the ignition
switch was placed in the ON position)
(2) Fuel cut 4 seconds after a failure was detected
cylinder top dead center has been detected since the ignition
(Provided that no No.
switch was placed in the ON position)
Barometric
pressure sensor
Controls provided on the assumption that barometric pressure is 101 kPa
Detonation sensor"
<6G74-SOHC 24
Valve Engine>
is switched from the timing for super petrol to the timing for standard
timing
The ignition
petrol.
Ignition coil and
power transistor
unit
Fuel cut for cylinders whose ignition signal is abnormal
Oxygen sensorNo air-fuel ratio feedback control (closed loop control) achieved
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