1998 HONDA CR-V Ignition

lgnition Control Module (lCMl Input Test
NOTE:
. See section 11 when the malfunction indicator lamp(MlL) comes on.
. Perform an input test for the ignition control module(lCM) after finishing the fundamental tests for the
ignition system and the fuel and emissions systems.
. '97 -'98 models: The tachometer should operate nor-
mally if the ICM is OK.
L Remove the distributor ignition (Dl) cap, the distrib-
utor ignition (Dl) rotor, and the leak cover.
2. Disconnect the wires from the lCM.
8LU WIRE{'97 - '98 models}
4-19
7.
Turn the ignition switch ON {ll). Check for voltage
between the BLK,^/EL wire and body ground. There
should be battery voltage.
. lf there is no battery voltage, check the BLK/rEL
wire betlveen the ignition switch and the lclvl.
. lf there is baftery voltage, go to step 4.
Turn the ignition switch ON (ll). Check for voltage
between the WHT/BLU wire and body ground. There
should be battery voltage.
. lf there is no batteryvoltage, check:- ignition coil.- WHT/BLU wire between the ICM and ignition
corl.
. lf there is battery voltage, go to step 5,
'97 model: Disconnect the ECM/PCM connector A(32P). Check for continuity on the YEL/GRN wire
between the ICM and ECM/PCM. There should be
continuity.'98 - 00 models: Disconnect the ECM,PCM connector
B (25P). Check for continuity on the YEUGRN wire
between the ICM and ECM/PCM. There should be
continuity.
Check for continuity on the YEUGRN wire to body
ground. There should be no continuity.
Reconnect the ECM/PClvl connector.
'97 -'98 models: Check for continuity on the BLU
wire between the test tachometer connector and the
lCM. There should be continuity.
'97 -'98 models: Check for continuity on the BLU
wire to body ground. There should be no continuity.
lf all the tests are normal, replace the lCM.
9.
'10.
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lgnition System
lgnition Coil Test
Using an ohmmeter, measure resistance between the
terminals. lf the resistance is not within sDecifications,
replace the ignition coil.
NOTE: Resistance will vary with the coil temperature;
specifications are at 68"F (20'C).
Plimary Winding Resistance
{Between the A and B terminals):
0.6it - 0.77 0
Secondary Winding Resistance
{Between the A and secondary winding terminals):
12.8 - 19.2 kO
TERMINAL A {+l
4-20
eo
lgnition Wire Inspection and Test
1.Carefully remove the ignition wires by pulling on
the rubber boots. Do not bend the wires; you might
break them inside.
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.
IGNITION WIRE
Connect the ohmmeter probes and measure resis-
tance.
lgnition Wire Resistance:
25 kO max. at 68'F 120'Cl
IGNITION WIRE
4. lf the resistance exceeds 25 kO, replace the ignition
wire.
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Spark Plug Inspection
Inspect the electrodes and ceramic insulator for:
. lmproper gap. Oil-fouling. Carbon deposits. Cracked centerelectrode insulator
Burned or worn electrodes may be caused by:
. Advanced ignition timing
. Loose spark plug
. Plug heat range too hot
. Insufficient cooling
Fouled plug may be caused by:
. Retarded ignition timing
. Oil in combustion chamber
. Incorrect spark plug gap
. Plug heat range too cold
. Excessive idling/low speed runnang
. Clogged air cleaner element
. Deteriorated ignition wires
I
2. Check the electrode gaP.
. Adjust the gap with a suitable gapping tool.
Electrode Gap
Standard 1.1 3 ' mm (0.043 Loo. in)
Replace the plug if the center electrode is rounded
as shown below:
Spark Plugs
'97 - '98 modsls:
ROUNDEOELECTRODE
,--, /(--/| | r--'--'--r-.--l-:=---:1
:
ZFR5F-11 (NGK)
KJ16CR-111 (DENSO)
'99 - 00 models;
ZFR6F-11 (NGK)
KJ2OCR-111 (DENSO)
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
(1.8 kgf.m. 13lbf.ft).
4-21
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Gharging System
Troubleshooting
lf the charging system light does not come on or does not go off, or the battery is dead or low, test the following items inthe order listed below:
1. Battery (see section 23)
2. Charging system light
3. Voltage
4. Alternator control system (U.S.A. model)
5. Alternator/regulator
Charging System Light Test
ALTERNATOR 4P CONNECTOR{U.S,A. modell
(BLK/YEL)
2
3
Wire sade offemale terminals
I
I
I
ALTERNATOR 3P CONNECTORlCaneda model'
Iemale terminals
[ ]: Canada model
Chsrging Systom Light Check:Turn the ignition switch ON {ll),and make sure the charging system light comes on.
Check for a blown No. 15 17.5 Alfuse and a blown charging sys-tem light bulb. lf the tusa .ndbulb are OK, repair th€ open inth€ WHT/BLU wire.
Does the charging systemlight come on?
Charging System Light Check{com'd}:Start the engine.
Does the charging systemlight go offfPerform the Alte.nator/RegulatorTest lsee page +281.
Voltage Check:Measure the voltage at the No. IlNo. 2iterminal of the 4P [3Plcon-nector with the ignition switch ON{ ).
Ropair the open in the BLK/YELwiae betwoen the altemator andunder-da3h luso/relay box.
ls there battery voltage?
(To next page)
4-24
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in(From previous page)
Does the charging systemlight come on?
Ch6ck the L circuil:1. Turn the ignition switch OFF.2. Disconnect the 4P [3P] con-nector from the alternator.3. Turn the ignition switch ON (ll).
Repair the short to ground in theWHT/BLU wire.
[ ]: Canada model(cont'd)
4-25
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n-
n-
6. Remove the two screws. then remove the switch.
Check for continuity between the terminals in each
switch position according to the table.
. lf there is continuity, and it matches the table,
replace the cable reel.
. lf there is no continuity in one or both positions,
replace the switch.
lf all tests prove OK, reconnect the cable reel sub-
harness connector.
Reconnect the driver's airbag and front passenger's
airbag connectors, and reinstall the access panel on
the steering wheel.
Reconnect the battery positive cable. then the nega-
tive cable.
After connecting the airbag connectors, confirm
proper system operation: Turn the ignition switch ON
(ll); the SRS indicator light should come on for about
six seconds and then go off.
,s
r.
1e
to
7.
l
9.
10.
SET/RESUME
Terminal
t*,r*
-__\l23
SET ION)o----o
RESUME (ON)o----o
11.
4-41
1.
Actuator Test
Disconnect the actuator cable trom the actuator rod
and the 4P connector.
Connect battery power to the No. 4 terminal and
ground to the No. 1, No. 2 and No. 3 terminals,
Connect a vacuum pump to the vacuum hose. Then
apply vacuum to the actuator.
VACUUM PUMP GAUGE0-30 in.Hg.A973X-041-XXXXX
Terminalside otmale terminals
The actuator rod should pull in completely. lf the rod
pulls in only part-way or not at all, check for a leak-
ing vacuum Iine or defective solenoid.
ACTUATOB ROD
(cont'd)
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Circuit Diagram
UNDER OASHFUSEiRELAY BOX
6; E;';lwHTsLka rtF',*",El-l
I
RAOIATORFANSWITCHfClosed :Above)L 199oF {930C) J
BLK/RED
I
L^,^,.,
T*'
IBLK
I
I
oro,
IGNITION SWITCH
No.41{100A) N0.42140A)
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Goolant Temperature Gauge
Gauge Testing
1. Check the No. 25 (7.5 A) fuse in the under-dash
fuse/relay box before testin9.
2. Make sure the ignition switch is OFF, then discon-
nect the YEL/GRN wire from the coolant tempera-
ture sending unit. and ground it with a jumper wire.
YEL/GRNWIRE
Turn the ignition switch ON {ll). Check that the
pointer of the coolant temperature gauge starts
moving toward the "H" mark. Turn the ignition
switch OFF before the pointer reaches "H" on the
gauge dial. Failure to do so may damage the gauge.
lf the pointer of the gauge does not move at all,
check for an open in the YEL/GRN wire.
lf the wires are OK, replace the coolant temperature
gauge.
lf the coolant temperature gauge works, test the
coolant temperature sending unit.
5.
COOLANT TEMPERATURE
Coolant Temperature Sending Unit
Testing
1. Disconnect the YEUGRN wire from the coolant tem
perature sending unit.
COOLANT TEMPERATURE
POSITIVETERMINAL
YEL/GRN WIRE(Covered withinsulation)
2. Using an ohmmeter, measure the change in resis-
tance between the positive terminal and the engine
(ground) with the engine cold and with the engine
at operating temPerature.
Temperature133.F (56'C)1A5 - 212F
(8s - 100'c)
Resistance(0)13746-30
3. lf the readings are substantially different from the
specitications above, inspect the coolant level and
the cooling system. lf the cooling system is OK,
replace the sending unit.
10-15
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