Mitsubishi 1992 3000GT, Service Manual

Page: 604 / 1308

AUTOMATIC TRANSAXLE Troubleshooting
Based upon use of the troubleshooting guide, the prob-
able location of the problem should be estimated.
I
Checks should be made of fluid levels and the condition
of the ATF, as well as the condition of the manual control
cables; adjustments should then be made if found to
be necessary.
If a presumption has been made that there is an
malconditionsomewhere in the electronic-control
tern, check the fault code, in order to determine
probable location of the problem, by using a multi-use
tester or voltmeter.
When the abnormal system is discovered, check each
element (sensors, etc.) one by one, and make repairs
as necessary.
When the abnormal condition is presumed to be in
the hydraulic-pressure-control system, check by mak-
ing an oil-pressure test.
When the result of the oil-pressure test does not satisfy
the specified pressure, check each system at places
related to the valve body, check the hydraulic-pressure
oassaaes for leakaae. etc.
If the problem is unusually dirty ATF, abnormal noises,
oil leakage, or slippage of the clutch or brakes, or an
abnormalcondition of the transaxle itself, disassemble
and repair the transaxle.
Functional malfunctions of the can lead to other
problems, such as those described below:
(1) Improper maintenance and/or adjustments
(2) Malfunctions of the electronic control functions
(3) Malfunctions of mechanical functions
(4) Malfunctions of hydraulic control functions
(5) Malfunctions of engine performance
etc.
In order to properly determine (“Troubleshoot”) the source
of these malfunctions, it is first essential to methodically ques-
tion the user concerning the details of the problem, such
as the condition of the problem, the situation at the time
the problem occurred, and any other relevant information,
all in as much detail as possible. The user should also be
asked whether or not the problem has occurred more than
once, and under what conditions.
Subsequently, certain tests should be conducted in a certain
order, as described at the left.
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