Pajero II Workshop Manual 1991 · FUEL · страница 201 из 339 · Открыть оригинал PDF ↗

Текст распознан со скана. Числа и обозначения можно сверить с оригиналом ниже.

SELF-DIAGNOSIS

The engine control unit monitors the inputloutput
signals (some signals at all times and the others
under specified conditions) of the engine control
unit,

When it is noticedthatanirregularityhascon-
tinued forspecified time or longerfromwhen
the irregular signal is initially monitored, passing
certainnumber,theenginecontrolunit judges
thatanirregularityhas occurred,memorizesthe
malfunction code, andoutputs the signal tothe
self-diagnosis output terminals_
There are15 diagnosis items, includingthenor-
mal state, and the diagnosis resultscan be read
out witha multi-use tester
Moreover, since memorization of the malfunction
codes isbackedup directly bythe battery, the
diagnosis results are memorized even if the igni-
tionkeyisturnedoff.Themalfunctioncodes
will, however,beerasedwhenthe batteryter-
minal or the engine control unit connector is dis-
connected.
The malfunction codes are also erased by setting
the ignition switch to theONposition and then
sendingthemalfunction-code-erasesignalfrom
the multi-use tester to the engine control unit.

Caution

If the sensor connector is disconnectedwhile
theignitionswitchisON;themalfunction
codeismemorized.Inthis instance,either
sendthemalfunction-code-erasesignalfrom
themulti-usetestertothe enginecontrol
unit, the diagnosis memory will be erased:
The15 diagnosis items are provided as follows
and if plural items are activated, they are all indi-
cated sequentially fromthesmallestcodenum-
ber

Caution

Ignition timing adjustment signal malfunction
codeis output when the ignition timingad-
justment terminal line is short-circuited to the
earthTherefore , the malfunction code is out-
put when the ignition timing adjustment ter-
minal is earthed, however, this is notmal-
function.

DIAGNOSIS CHART

Таблица в оригинале

Распознанный текст таблицы — требует сверки с оригиналом

Output f	Diagnosis item	Diag	nosis code	Check item (Remedy)
preerence
order		No.	Memory
	Engine control unit			(Replace engine control unit)
	Oxygen sensor	11	Retained	Harness and connector Oxygen sensor Fuel pressure Injectors (Replace if defective.) Intake air leaks
	Air flow sensor	12	Retained	Harness ad connector (If harness and connector are normal, replace air flow sensor assembly)
	Intake air temperature sensor	13	Retained	Harness and connector Intake air temperature sensor
	Throttle position sensor	14	Retained	Harness and connector Throttle position sensor Idle position switch

Mitsubishi Motors CorporationFeb1991

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