1989 MITSUBISHI GALANT fuse

SERVICE BRAKES - Anti-lock Braking System Troubleshooting
W
ith the ignition key in the “ON” posi- No
Check fuse No. 9. If it is
tion, do other warning lights illuminate? blown, correct the cause of
-T-
Yesthe blown fuse and then
replace the fuse.I
Remove the combination
meter, and check with
the ignition key “ON”.
I
Does voltage between har-NoThe harness between the ness
connector terminal
No. 8 and ground indicate
-combination meter from
fuse No. 9 is broken.
battery voltage?
I
Yes Repair harness.
Circuit in combination meter
is broken.
L Repair or replace com-
bination meter.
Turn the ignition switch OFF an
check.
I
Is the ABS warning light normal? (CheckNo
for burned bulb.)c A$Eedyrning light bulb
,
c Replace ABS warning
light bulb.
Yes
Is there continuity between terminals No. No -
8 and 4” or 17’2 on the combinationI Malfunction of combinatio
n
meter
I Repair or replace combi-
meter side? nation meter
Are instrument panel wiring harness, No
-~
engine compartment wiring harness, . Connect connectors firmly.
body wiring harness and ABS wiring
(Check for pins pulled out or
harness connectors connected properly? bent, repair as needed.)
I
1 Yes
I
Broken wire in ECU, valve relay or both
drive circuits. Check and repair both
circuits.
I
NOTE‘1: Non-Turbo . Turbol *:Non-Turbo
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SERVICE BRAKES - Anti-lock Braking System Troubleshooting35-43
MAINFUSIBLELINK @
IGNITION
KgCHm

l
CONTINUED FROM
PREVIOUS PAGE
CONNECTOR
t ,
Is there continuity betweenNo FHarness wire between
body harness connector
ter-data link connector and minals

No.23 and No.24, andABS ECU is broken.
data link connectors No.4 &No.1 O?I
Repair harness.
Yes
I
1 Malfunction of ABS ECUI1-4 Replace ABS ECU.III1
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1 Yes
No - Correct cause of blown fuse and replace fuse.
r
L
W
ith the ignition key
in theNo ~ Is power relay normal?
“ON” position, does the (Refer to P.35-74.)power relay make a “click”noise?
YesNoYes
tI ,
Disconnect ECU connector
and check harness connec-
tor.t
Replace power relay.1
W
ith the ignition key in the
NoHarness wire between
“ON” position, does voltage- power relay and ECU is
between ECU connector ter-
broken.
minal No. 18 and ground in-
dicate the battery voltage?
4
Repair harness.
Yes
tp
Is there continuity betweenNoECU ground line broken
body harness terminal
s
No.9
and No. 34, and
c
ground?Repair harness.I
Yes

35-44SERVICE BRAKES - Anti-lock Braking System Troubleshooting
CABS warning light does not illuminate when ignition key is in “START”\
position.I
[Explanation]
The ABS ECU uses the IG2 power source which isand the ECU turns the valve relay OFF. If the
turned off in the “START” position. The ABS
warning light does not illuminate at this time, there
warning light uses the IGl power source which is is trouble in the warning light circuit on the valve
not turned off even in the “START” position.
relay side.
Consequently, in the “START” position, power is off
KLlh-0u
:LEIGNITIONSWITCH0(IGl) 0
Es10
1
7IIIIIII
I
I!
: Non-Turbo
.
TurboI: Non-Turbo 1
Remove the fuse fo
power source of the
ABS power relay in the
junction block and switch off ABS-ECU.
l Remove and inspect
10 pin connectors ofthe hydraulic unit.
“ON” position, does voltage
between body connector
terminal
No.8 and around1indicate the battery vcltage?
b!$%iii&Broken line between HUand body groundI
Yest
Remove the valve relay. Is - Nothere continuity between Valve relay malfunction
terminal No. 87a and No. 30?I
Yes[Replace-relay
HU harness malfunction
IReplace HU.I
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SERVICE BRAKES -Service Adjustment Procedures35-75
14AO197
FLAT BATTERY REMEDYM35FOAF
When booster cables are used to start the engine when the
battery is completely flat and then the vehicle is immediately
driven without waiting for the battery to recharge itself to
some extent, the engine may misfire, and driving might not be
possible. This happens because A.B.S. consumes a great
amount of current for its self-check function; the remedy is to
either allow the battery to recharge sufficiently, or to remove
the fuse for A.B.S. circuit, thus disabling A.B.S.
The A.B.S. warning light will illuminate when the main fusible
link (for A.B.S.) is removed.
After the battery has sufficiently charged, install the main
fusible link (for A.B.S.) and restart the engine; then check to be
sure the A.B.S. warning light is not illuminated.
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BRAKE FLUID PRESSURE SWITCH CHECK
hl35FOAL
(1) Disconnect the hydraulic pressure switch connector.
(2) Check the continuity between the terminals of hydraulic pressure switch.
Condition Between terminals
Brake pedal not depressed
No conductance
Brake pedal depressed lightlyNo conductance
Brake pedal depressed
stronglyConductance