Page 1145 of 1681
lgnition System
23-88
Component Location lndex
rGNlTroN TTMTNG COJTRqL SYSTEM
. lnspection and sefting, page 23-90
DISTRIBUTORTop End lnspeclion, page 23-92Removal/lnstallation, pages 23-92, 93Overhaul, page 23 94Reassembly, page 23-95lgnition Coil TesvReplacement, page 23 96lgnition Control Module (lCM) lnput Test, page 23-97
PLUGSInspection, pago 23-98
IGN'TION WIRESInspection, page 23-95
SERVICE CHECK CONNECTOR I2PIIWi]6 coloEi BRN/WHT I
land BLK j
Page 1153 of 1681

lgnitionSystem
Coil TestlgnitionlgnitionCoilReplacement
1. With the ignition switch OFF, remove the distribu-
tor ignition (Dl) cap, rotor, and cap seal, then remove
the leak cover.
Remove the two screws to disconnect the BLK/YEL
and WHT/BLU wires lrom the coil.
Remove the two screws, and slide the ignition coil
out of the distributor ignition (Dl) housing.
DISTRIBUTOR IGNITION {DIIHOUSING
ROTOR
WHT/BLU WIRE
2.
1.With the ignition switch OFF, remove the distribu-
tor ignition (Dl) cap.
Remove the two screws to disconnect the BLK/YEL
and WHT/BLU wi.es from terminals A ( + ) and B {- )
respectively.
SECONDARYWINDINGTERMINAL
3. Using an ohmmeter, measure resistance between
the terminals. ReDlace the coilif the resistance is not
within soecifications.
NOTE: Resistance will vary with the coil temper-
ature; specifications are at 68oF (20oC)
Plimary Winding Rssistance(Between th€ A 8nd B torminalsl: 0.6-O,8 ohms
Socondary Winding Resistance(Betwe€n the A and secondary winding torminalsl:
12.4-19.2 kA
B (-t
SECONDARYWllrlDlNGTENMINAL
TERMINAL A (+I
A {+}
{
t
l
tl
t9
t
L--
23-96
Page 1154 of 1681

lgnition Control Module (lCM) Input Test
NOTE:
a See section 1 1 if the malfunction indicator lamp (MlLl
has been reported on.a Perform an input test for the ignition control module(lCM) after finishing the fundamental tests for the ig-nition system and the fuel and emissions systems.a The tachometer should operate normally.
1. Remove the distributo. ignition (Dl) cap, the rotor,and the leak cover.
2. Disconnect the BLK/YEL, WHT/BLU, YEL/GRN, andBLU wires from the lCM.
3. Turn the ignition switch ON {ll}. Check for voltage
between the BLK/YEL wire and body ground.
There should be battery voltage.
a lf there is no battery voltage, check the BLKiYEL
wire between the ignition switch and the lCM.a It there is battery voltage, go to step 4,
)
I
)
BLU WIRE
YEL/GRN I,\'IRE
4. Turn the ignition switch ON (ll). Check for voltage
between the WHT/BLU wire and body ground.
There should be battery voltage.
a lf there is no battery voltage, check:- ignition coil.- WHT/BLU wire between the ignition coil and
tcM.
a lf there is battery voltage, go to step 5.
5. Disconnect the 32P connector from the ECM, and
check for continuity on the YEUGRN wire between
the ICM and ECM.
There should be continuity.
6. Check for continuity on the YEL/GRN wire to bodygrouno.
There should be no continuity.
7.Reconnect the ECM 32P connector.
Disconnect the gauge assembly 13P connector,
TCM 26P connector, and cruise control l4P connector.
9. Check for continuity on the BLU wire between the
ICM and tachometer.
There should be continuity.
'10. Check for continuity on the BLU wire to body ground.
There should be no continuity.
1 1 . lf all the tests are normal, reconnect the connectors,
and replace the lCM.
23-97
/i
Page 1155 of 1681

lgnition System
1. Inspect the electrodes and ceramic insulator for:
Spark Plug lnspection
. lmproper gap. Oil-fouling. Carbon deposits. Cracked centerelectrode insulatorDamagedgaskei
Burned or worn electrodes may be caused by:
. Advanced ignition timing. Loose spark plug
. Plug heat range too low. Insufficient cooling
Fouled plugs may be caused bY:. Retarded ignition liming. Oil in combustion chamber. Incorrect spark plug gap
. Plug heat range too high. Excessive rdling'low speed running
. Clogged air cleaner element. Deteriorated ignition coil or ignition wires
81881, 818C5 engine:
. Adjust the gap wjth a suitable gapping tool, and
replace the plug if the center electrode is rounded
as shown below.
Electrode Gap:
Standard 'l .1 ; r mm {0.043 ; ooa in)
E.
23-98
3.818C1 engine:
a Do not adjust the gap ol a platinum tip plug;
replace the spark plug it the center electrode is
rounded or if the gap is not within the specifi-
cattons.
Electrode Gap:
Standard I t.s-3., mm (0.051-3.oo4in)
5.
PLATINUM TIP
NOTE: Use onlv the spark plugs listed below
Spark plug
Bl88l engine:
NGK I ZFR5F-11
DENSO I KJ 16CR-111
818C1 engine:
NGK PFR6G-13
DENSO I PK2OPR-113
818C5 engine:
NGK PFR6G-I1
DENSO PK2OPR-111
Apply a small quantity ot anti-seize compound to the
plug threads belore installing the plugs.
Screw the plugs into the cylinder head tinger tight,
then torque them to 18 N.m (1 .8 kgf.m, 13lbf.ft).
Page 1165 of 1681
Charging System
Alternator Overhaul
CAUTION: Do not remove the pulley unless the tront
bearing needs replacement.
To loosen the pulley locknut, use 10 mm and 22 mm
wrenches. lf necessary, use an impact wrench.
DENSO:
PULLEY LOCKNUT1'11 N.ft (11.3 kgf.m,82 lbt.ft)
FRONT BEARING
STATOR/DRIVE ENDHOUSINGOENSO:Test, page 23-1'10MITSUBISHIITest, page 23-112
PULLEY
CAUTION: Do not get grease
or oil on the slip rings.
BRUSH HOLDERINSULATOR
offiEND COVER
k-"o*"... ".,"' BRACKET
23-108
L_
ROTOR
PULLEY
10 mm 8OX WRENCH
BEARING
Page 1167 of 1681
Charging System
Rotor Slip Ring Test
DENSO:'l . Check that there is continuity between the slip rings.
ROTOR SHAFT
Check that there is no continuity between the slip
rings and the rotor or rotor shaft.
lf the rotor fails either continuity check, replace the
alternator.
Stator Test
1 . Check that there is continuity between each pair ot
leads.
Check that there is no continuity between each lead
and the coil core.
lf the coil lails either continuity check, replace the
alternator.
2.
3.
2.
3.
23-110
cotl coRE
b-.
Page 1170 of 1681

i'[
Rotor Slip Ring TestAlternator Brush Inspection
Separate the drive-end housing from the rear hous-
ing as described on page 23-l 1 1.
Separate the rear housing from the stator/rectifier
assembly by removing the four screws and the ter-
minal nut from the rear housing (see page 23-111).
Measure the length of the brushes with vernier
calrpers.
Alternator Brush Length:
O Standard (NEW)O Service Limit
19.0 mm (0.75 in)5.0 mm (0.20 in)
lf the brushes are less than the service limit, replace
them.
23-113
{
J
lFr
MITSUBISHI:
1. Checkthe resistance between the slip rings.
There should be 1.8 - 3.0 ohms.
. lf resistance meets the specification, go to step 2,
. lf resistance does not meet the specification,
replace the alternator.
SLIP RII{GS
Check that there is no continuity between the slip
rings and the rotor or rotor shaft.
lf the rotor fails either continuity check, replace the
alternator.
Stator Test
1. Check that there is continuity between each pair of
leads.
co|LconE
Check that there is no continuity between each
and the coil core.
lf the coil core fails either continuity check, replace
the alternator.
ROIOR SHAFT
J
"-
Page 1177 of 1681
Gauge Assembly
Component Location Index
VEHICLE SPEED SENSOR {VSSITest, page 23-128Input Test, page 23-128Replacement, page 23-130
GAUGE ASSEMBLYGauge Location Index, page 23-12:|fndicator Location Index. page 23-121Terminal Location Index, page 23-121Eulb Location, pag6 23-122Disassembly, page 23-127Removal, paqe 23-126
FUEL GAUGE SENDING UNITTest, page 23-132Replacement, page 23-132
PARKING BRAKE SWNCHTest, page 23-135
ARAKE FLUID LEVEL SWITCHTest, page 23,135
ENGINE OIL PRESSURE SWITCHTest, p6ge 23-130
ENGINE COOLANT TEMPERATUFE IECTI GAUGESENOING UNITTest, page 23-134
23-120