key battery MITSUBISHI ECLIPSE 1991 User Guide

FUEL SYSTEM - MPI System inspection <1.8L Engine>14-59
--..When it is noticed that an irregularity has continued for a
specified time or longer from when the irregular signal is
initially monitored. Passing a certain number, the engine
control unit judges that an irregularity has occurred, memorizesthe malfunction code, and outputs the signal to the
self-diagnosis output terminal.
There are 14 diagnosis items, and the diagnosis results can beread out with a voltmeter.
Moreover, since memorization of the malfunction codes is
backed up directly by the battery, the diagnosis results are
memorized even if the ignition key is turned off. The malfunc-
tion codes will, however, be erased when the battery terminal
or the engine control unit connector is disconnected.
Caution
If the sensor connector is disconnected with the ignition
switch turned on, the malfunction code is memorized. In
this case, disconnect the battery terminal’
(-) for 10seconds or more, and the diagnosis memory will be
erased.The 14 diagnosis items are provided as follows, and if plural
items are activated, they are all indicated sequentially from thesmallest code number.
perature sensor
CautionFor the malfunction code of the ignition timing adjustment
signal, the light for the ignition timing adjustment terminal
lights up when short-circuited to ground.
Consequently, it is output when the ignition timing
adjustment is grounded when adjusting ignition timing,
but in this case there is not abnormality.
CHECK PROCEDURE (SELF-DIAGNOSIS)N14PCAElPrecautions for Operation
(1) When battery voltage is low, no detection of failure is
possible. Be sure to check the battery for voltage and otherconditions before starting the test.
(2) Diagnosis item is erased if the battery or the engine controlunit connector is disconnected. Do not disconnect the
battery before the diagnosis result is completely read.
(3) After check and correction are over, disconnect ground
cable for
10 seconds or more from negative terminal of
battery and connect it again to make sure that failure code
is erased.

FUEL SYSTEM - MPI System Inspection <2.0L DOHC Engine>
SELF-DIAGNOSIS14-73
N14PAAEThe engine control unit monitors the input/output signals
(some signals at all times and the others under specified
conditions) of the engine control unit.
When it is noticed that an irregularity has continued for a
specified time or longer from when the irregular signal is
initially monitored. Passing a certain number, the engine
control unit judges that an irregularity has occurred, memorizesthe malfunction code, and outputs the signal to the
self-diagnosis output terminal.
There are 14 diagnosis items, and the diagnosis results can beread out with a voltmeter.
Moreover, since memorization of the malfunction codes is
backed up directly by the battery, the diagnosis results are
memorized even if the ignition key is turned off. The malfunc-
tion codes will, however, be erased when the battery terminal
or the engine control unit connector is disconnected.
CautionIf the sensor connector is disconnected with the ignition
switch turned on, the malfunction code is memorized. In
this case, disconnect the battery terminal
(-) for 10seconds or more, and the diagnosis memory will be
erased.The 14 diagnosis items are provided as follows, and if plural
items are activated, they are all indicated sequentially from thesmallest code number.
arometnc pressure sensor
CHECK PROCEDURE (SELF-DIAGNOSIS)Precautions for OperationN14PCAE2(1) When battery voltage is low, no detection of failure is
possible. Be sure to check the battery for voltage and otherconditions before starting the test.
(2) Diagnosis item is erased if the battery or the engine controlunit connector is disconnected. Do not disconnect the
battery before the diagnosis result is completely read.
(3) After check and correction are over, disconnect ground
cable for 10 seconds or more from negative terminal of
battery and connect it again to make sure that failure code
is erased.

AUTOMATIC TRANSAXLE - Troubleshooting21-179
@: ELC-4PJT
@I: Diagnosis control
0: Ground
16R1336
OBTAINING FAULT CODES(1) Connect the voltmeter to the connector for diagnosis.
(2) Read the output fault codes.
Then follow the remedy procedures according to the
“FAULT
CODE DESCRIPTION” on the following page.
NOTEl As many as a maximum of
terr fault codes, in the
sequence of occurrence, can be stored in the Random
Access Memory (RAM) incorporated within the control
unit.l If the number of stored fault codes or fault patterns
exceeds ten, already stored fault codes will be erased,
in sequence beginning with the oldest.
l Do not disconnect the battery until all fault codes or
fault patterns have been read out, because all stored
fault codes or fault patterns will be canceled when the
battery is disconnected.
(3) If the fail-safe system is activated and the transaxle is
locked in
3rd gear, the fault code in the Fail-Safe Code
Description will be stored in the RAM.
Three of these fault codes can be stored.
(4) The
cancelation will occur if, with the transaxle locked in
3rd gear, the ignition key is turned to the OFF position, but
the fault code is stored in the RAM.

23-16BODY - Troubleshooting
OPERATION
Key-reminder warning0 Battery voltage is always supplied, through sub
fusible link No.
@, to the key-reminder switch.0 When the driver’s seat door is opened while the
ignition key is still in the key cylinder, the door
switch is switched ON, electricity flows to sub
fusible link No.
0, the key-reminder switch, the
buzzer, the door switch, and ground, and the
buzzer sounds.
Seat belt warning0 Battery voltage is applied, through fuse No.
0,to the seat belt timer when the ignition key is at
the “ON” position.0 Electricity flows to sub fusible link No. @, the
key-reminder switch, the seat belt warning light,
the seat belt timer, and ground, and the seat beltwarning light illuminates for approx. 6 seconds.0
If the driver does not buckle the seat belt, the seatbelt switch is switched ON, electricity flows to
sub fusible link No. @, the key-reminder switch,the buzzer, the seat belt switch, the seat belt
warning timer, and ground, and the buzzer
sounds for approx. 6 seconds.0 When the driver buckles the seat belt, the seat
belt switch is switched OFF and the buzzer stops.
TROUBLESHOOTING HINTS
Key-reminder warningThe key-reminder warning doesn’t sound.
(1) The seat belt warning function is OK.
l Check the door switch.
(2) The seat belt warning also doesn’t function.0 Check the buzzer.
Seat belt warning1. The seat belt warning doesn’t function.
(1) The seat belt warning light illuminates.0 Check the seat belt switch.
(2) The seat belt warning light also does not
function (but the key-reminder warning
functions normally. 10 Check the seat belt timer.
(3) The seat belt warning light also does not
function (and the key-reminder warning also
does not function).0 Check the key-reminder switch.
2.The buzzer doesn’t stop even though the driver’s
seat belt has been buckled.0 Check the seat belt switch.
3.The seat belt warning light doesn’t illuminate (but
the buzzer sounds).l Check the light bulb.
’ I