Page 1580 of 2189
lgnition System
lgnition Coil Test
Using an ohmmeter, measure resistance between the
terminals. lf the resistance is not within soecifications.
replace the ignition coil.
NOTE: Resistance will vary with the coil temperature;
specifications are at 68'F (20'C).
HITACHI:
Primary Winding Resistance
{Betwesn the A and B lerminalsl;
0.45 - 0.55 0
Secondary Winding Resistanc€
(Between the A and secondary winding terminals):
22.1 - 33.6 kA
TERMINAL B {-)
TERMINAL A
TEC:
Primary Winding Resistsnce
{Between the A and B terminalsl:
0.63 - 0.77 0
Secondary Winding Resistance
(Between the A and secondary winding terminals):
12.8 - 19.2 kO
SECONDARYWINDINGTERMINAL
TERMINAL A
23-110
TERMINAL B (-)
lgnition Wire lnspection and Test
CAUTION: Carelully remove the ignition wires bypulling on the rubber boots, Do not bend the wires; you
might break them inside.
'1. Check the condition of the ignition wire terminals. lf
any terminal is corroded, clean it, and if it is broken
or distorted, replace the ignition wire.
Check for broken,corroded, and bentlermrnals.IGNITION WIRE
Connect ohmmeter probes and measure resistance.
lgnition Wire Resistance:
25 k0 max. at 68"F (20"C)
IGNITION WIRE
3. lf resistance exceeds 25 kO, replace the ignition wire.
Page 1581 of 2189
1. Inspect the electrodes and ceramic insulator for:
Spark Plug lnspection
Crackedinsulator
2.
[ . t.p,op", grp
| . Oil-fouling
i . Carbon deposits
| . Cracked center
I electrode insulator
Burned or worn electrodes may be causecl by:
. Advanced ignition timing
. Loose spark plug
. Plug heat range too low
. Insufficient cooling
Fouled plugs may be caused bY:
. Retarded ignition timang
. Oil in combustion chamber
. Incorrect spark plug gap
. Plug heat rangetoo high
. Excessive idling/low speed running
. Clogged air cleaner element
. Deteriorated ignition coil or ignition wares
D16Y5, D16Y7, D'16Y8 enginel
. Adjust the gap with a suitable gapping tool, and
replace the plug il the center electrode is round-
ed as shown below.
Electrode Gap:
1.1 mm
{o.{X:l in)ROUNDEDELECTRODE
Standard 1.1r8 ' mm (0.043i800oin)
Worn or detormed
1T
23-111
3. 816A2 engine:
. Do not adjust the gap of a platinum tip plug;
replace the spark plug il the center electrode is
rounded or it the gap is not within the specifica
tro ns.
Electlode Gap:
Standard 1.3181mm (0.051 !3oo" in)
flOUNDED ELECTROOE
',/
@_
:
Platinum tip
NOTE: Use only the spark plugs listed below
4. Apply a small quantity of anti seize compound to
the plug threads, and screw the plugs into the cylin
der head finger-tight. Then torque them to 18 N m
11.8 kgf.m, 13lbnft).
Engine TypesSpark Plugs
D16Y5ZFR4F 11 (NGK)
KJ14CR-111 (DENSOi
D16Y7,
D,I6Y8
ZFRSF-11 (NGK)
KJ16CR-111(DENSO)
81642PFR6L.13 (NGK)
PK2OPR.L13 (DENSO}
Page 1582 of 2189
Charging System
Component Location Index
UNDER.HOOD FUSE/RELAY BOX/*Has replaceable ELECTRICAL LOAD II DETECTOR (ELD) UNIT '
Troubleshooting, page 23-1 14Replacement, page 23-120Bectifier Removal, page 23,121Rectifier Test, page 23-122Rear Bearing Replacement, page 23-j24
*ELD unit: USA
CHARGING SYSTEM LIGHT(ln the gauge assembly)Test, page 23- l14
BATTERYTest, page 23-91
ALTERNATOR BELTInspection and Adjustment, page 23-t25
[]
23-112
Page 1583 of 2189
Circuit Diagram
IJNDER HOOD FUSEi RELAY BOX
-
BATTERY
LGNlTIONSWITCH
I
,'-F\I BAT I Gl /
\l_/
I
GRN/RED
I
N0.41 (80A) ,-a No 42 (40A)
ECM/PCM
f7
IWHT/RED
CHARGINGSYSTEMLIGHTI
TWHTi BLU
1323-1
ALTERNATOF
Page 1584 of 2189
Charging System
Troubleshooting
lf the charging system light does not come onthe order listed below:
1. Baftery (see page 23-91)
2. Charging system light
3. Voltage
4. Alternator control system (USA)
5. Alternator/regulator
Charging Systom Light Test
or does not go off, or the battery is dead or low, test the following items in
ALTERNATOR 4P CONNECTORIUSA)
Wire side offemale terminals
IG(8LK/YEL}
ALTERNATOR 3P CONNECTORlC.nadal
Wre side oftemale terminals
[ ]: Canada
23-114
Charging Svstem Light Check-l :lvlake sure the charging systemlight comes on.
Check for a blown No. 15 t7.5 A)fuso .nd a blown charging sys-tom light bulb. ll the fuse .ndbulb .re OK, ropair the open inth6 WHT/BLU wi16.
Does the charging systemlight come on?
Charging System Light Chec*-2:Start the enoine.
Does the charging systemlight go off?
Volta96 ChecklMeaslre the voltage at the No. 1lNo. 2l terminal of the 4P [3Plcon-nector with the ignition switch ONflr).
R6p.ir the op6n in the BLK/YELwire b€twsen tho altornator andund€r-dash tuso/.glay box.
ls there battery voltage?
Page 1585 of 2189
-
Wire side offemale terminals
LtwHT/8LUl
ALTERNATOR 3P CONNECTOR
lCanada)
Wire side oftemale terminals
LIWHT/BLUI
L
{W}IT/BLU)
.+1lr l2l
l3T.l-l-
ir/
(WHT/BLUI
(cont'd)
23-115
{From previous page)
Check tor an open in tho L cir'
cuit-1:1. Turn the ignition switch OFF
2. Disconnect the 4P [3Pl con-
nector from the alternator.
3. Ground the No. 3 terminal of
the 4P l3Plconnector.4. Turn the ignition switch ON (ll)
Turn the ignition swhch OFF, and
rep.ir tho open in tho wHT/
BLU wire.
Does the charging system
light come on?
Check for an open in the L cir-
cuit-2:Disconnect the No 3 terminal o{
the 4P [3PI connector from theground.
Does the charging system
light go off.r
Turn lhe ignition 3whch OFF, and
.epair the 3hort to gtound in the
wHT/Bl-U wire.
ALTERNATOR 4P CONNECTOR(USAI
r?-rl1l2l
FFI
]--
I
I l: canada
Page 1586 of 2189
Charging System
Troubleshooting (cont'd)
Alternator Control System Test (USA): ,96 - 98 modets, ,99 _ 00 Dl6y5 (M/Tl engine
NorE: Before testing. check proper operation of the ELD by confirming with the MrL {see section r 1).
BATTERY
CAUTION: Be 3ure to use a voltmot€.with its plus terminal connected to b.t-tery plus and its minus terminal to the{P connectoi tgmrinal No. 2.c
{WHT/GRNt
Wire side oIfemale terminals
ALTERNATOR.P CONNECTOB
Check for a 3hort in the circuitIALTC linel:1. Reconnect the 4P connectorto the alternator,2. Stan the engine, and turn theheadlights {high beam) ON.3. Measure voltage between the4P connector terminal No. 2and the positive terminal ofthe battery.
ls there 1V or less?
Check for rn opon in tha wire(ALTC linol:1. Turn the headlight and igni-tion switch OFF.2. Disconnect the 32P connectortrom the ECM/PCN4.3. Check tor continuity betweenthe ECM/PCM 32P connectorterminal No. 19 and alternator4P connector terminal No. 2.
Bspair open in thg wire lrstweenthe rhern.tor .nd ECM/PCM.
Check for short in the wire (ALTClinel:1. Turn the headlight and ignition switch OFF.2. Disconnect the 32P connectortrom the ECM/PCM.3. Check tor continuity betweenthe ECM/PCM 32P connectorterminal No. 19 and bodyground.
Subslitute a known-good ECM/PCM, .nd .och6ck.It p.escribod vohago i! now avail-able, replace the original ECM/PCM.
Ropair 3hort in the wiro betweonthe ahe.nator and ECM/PCM.
ECM/PCM CONNECTOR A I32PI
'Ia18I1011
121314151718t9
7
202'l2221
262730
Wire side offemale terminalsALTC(WHT/GRNI
c{WHT/GRNI
ALTERNATORWire side oIfemale terminals
([l
T
12
1
ECM/PCM CONNECTOB A (32PI
I23478910t1
1213 14151617182021222321
262730
Wire side of I AITCfemate terminats
A
(WHT/GRN|
23-116
Page 1587 of 2189
-
Alternator Control System Test {USA}: '99 - 0O models, except Dl6Y5 {M/T} engine
NOTE: Before testing, check proper operation ofthe ELD by confirming with the MIL (see section 11)'
BATTERY
CAUTION: Be sura lo use a voltmeter
with its plus te.minal conneqted io bat-
tery plus and it3 minus tgrminal to ths
4P connoctot tomrinal No. 2.
Wire side of
female terminals
c(WHT/GRNI
wire side offemale terminals
ALTERNATOR.P CONNECTOR
ECM/PCM CONNECTOR C 13lPI
ECM/PCM CONNECTOR C (31PI
(cont'd)
23-117
Check lor a sho.t in the circuit
{ALTC line):1, Beconnect the 4P connector
to the alternator.
2. Start the engine, and turn the
headlights (high beam) ON.
3. Measure voltage between the
4P connector terminal No. 2
and the Positive terminal of
the battery.
ls there 1 V or less?
Chcck for rn opon in the wire(ALTC lin6l:1. Turn the headlight and igni-
tion switch OFF
2. Disconnect the 31P connector
trom the ECM/PCM.
3. Check for continuity betlveen
the ECM/PCM 31P connectorterminal No. 2 and alternator
4P connector terminal No. 2
Repair opcn in the wire botweon
the alternstoi.nd ECM/PCM.ls there continuity?
Check tor short in the wire IALTC
line):1. Turn the headlight and igni-
tion switch OFF2. Disconnect the 31P connector
from the ECM/PCM.
3. Check for continuity between
the ECM/PCM 31P connector
terminal No. 2 and body
ground.
Substitute a known'good ECM/
PCM, and recheck.It prscribed voltagg is now avail'
abl€, replace tho original ECM/
PCM.
Raoair short in the wite between
the alle.nator and ECM/PCM,
1235618I10
/11611lo191 zo2122
23252621?82930JI
ALTC Wire side of(WHT/GRN) female terminals
o
