1997 HONDA CR-V Head

Charging System
Troubleshooting (cont'dl
'97 modol: Alternator Control System Test {U.S.A. model)
NOTE: Before testing, check proper operation ofthe ELD by checking for a DTC (see section .11).
CAUTION: Be sure to use a voltmeterwith ils positive terminal connected tobattery positive and hs negative termi-nalto the 4P connector terminal No. 2.
BATTERY
Wire side offemale terminals
{WHT/GRNI
ALTERNATORirP CONNECTOR
ALTEFNATOR4P CONNECTOR
Chock for a short in the circuitIALTC line):1. Disconnect the 4P connectorfrom the alternator.2. Start the engine, and turn theheadlights thigh beami ON.3. Me8sure voltage between the4P connector terminal No. 2and the positive terminal ofthe battery.
lstherelVorless?
Check for an open in the wire(ALTC linel:1. Turn the headlight and igni-tion switch OFF.2. Disconnect the 32P connectorfrom the ECN4/PCM.3. Check tor continuity betweenthe EcM/PcM 32P connectorterminal No.30 and alternator4P connector terminal No. 2-
Repair open in the wi.e betwoenthe atternator and ECM/PCM.ls there continuity?
Check for a shorl in the wiroIALTC line):1. Turn the headlight and ign;,I|on swrtcn UFF2. Disconnect the 32P connectorfrom the EcM/PcM.3. Check tor continuity betweenthe ECM/PCN4 32P connectorterminal No. 30 and bodyground.
Subslitute a known-good ECM/PCM, and recheck.It prescribed voha96 b now avail-able, replace the original ECM/PCM.
ls there continuity?
R€prir short in the wire betweenthe altornator and the ECM/PCM.
ECM/PCM CONNECTOR A I32PI
,/1./1810
./ l./t4161718t9202121
26272A293032
Wire side of ] ALTCfemale terminals I tWHT/cRNl
tlWHT/GRN)
female terminals
I
1
ECM/PCM CONNECTOR A {32P}
,/ ,/46810
,/1,/1416l7t8'1920212321
272A2S30:t2
Wire side of I ALTCfemale terminals {WHT/GRNI
f)
4-26
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R'oR
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'98 -'9O modols: Alternator Contlol SYstem Te3t (U.S.A' model)
NOTE: Before testing, check proper operation of the ELD by checking for a DTC (see section 11)
EATTERY
CAUTION: Be surc to uso a voltmetorwith its oo3itive torminel connccted to
battery po3hivo tnd its negativo teami'
nal to the 4P connector torminal No 2.
ECM,/PCM CONNECTORc {31P)
Wire side olfemale terminals
cIWHT/GRN)
Wire side oltemale terminals
ALTERNATOR4P CONNECTOR
ALTC
IWHT/GBNI
ECM/PCM CONNECTOR C {31P}
(cont'd)
Chock tor . short in tha circuit
IALTC lino):1. Disconnoct the 4P connectorIrom the alternator.2. Start the engine, and turn the
headlights (high beam) ON.
3. Measure voltage between the4P connector terminal No. 2
and the positive terminal oIthe battsry.
lsthere 1V or less?
Check for an opon in the wire
IALTC line):1. Turn the headlight and igni-
tion switch OFF.2. Disconnect the 31P connectorfrom the ECM/PCM.3. Check tor continuity betweenth6 ECM/PCM 31P connectorterminal No. 2 and alternator4P connector terminal No. 2.
Ropair open in the wiro betweenthe ahornrtor and ECM/PCM.
Chack lor a rhort in tho wire
{ALTC lincl:'!. Turn the headlight and igni'tion switch OFF.2. Disconnect the 31P connectorIrom the ECM/PCM.3. Ch6ck for continuity betweenthe ECM/PCM 31P connectorterminal No. 2 and bodyground.
Substituto . known-good ECM/
PCM, .nd rochock.lf prdcdb€d voltage b now av.il-able, repl.ce the original ECM/
rcM.
Rcpair rhort in thc wire b.twconth. ahGrn.tol.nd the EcM/PcM.
4-27
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Cruise Gontrol
Actuator Test (cont'dl
5. With voltage and vacuum still applied, try to pull the
actuator rod out by hand. You should not be able topull it out. lf you can. it is defectrve.
8.
9.
7.
Disconnect ground from the No. 3 terminal. The actu-
ator rod should return. lf it does not return, but the
vent hose and filter are not plugged, the solenoid
valve assembly is defective.
Repeat steps 2 through 5. and disconnect ground
from the No. l terminal. The actuator rod should
return. lf it does not return, but the vent hose and
filter are not plugged, the solenoid valve assembly
is defective.
lf you replace the solenoid valve assembly, be sure
to use new O-rings on each solenoid.
Disconnect power and ground from the 4P connector.
Disconnect the vent hose from the actuator. Connect
a vacuum pump to the actuator vent hose port, and
apply vacuum. The actuator rod should pull in com-pletely. lf not, the vacuum valve is stuck open.
Replace the actuator,
4-42
I
't.
Actuator Replacement
3.
4.
7.
Ar
Pull back the boot. and loosen the locknut. Then dis-
connect the cable from the bracket.
Disconnect the cable end from the actuator rod.
1.
4.
.J.
Disconnect the 4P connector from the actuator.
Disconnect the vacuum hose from the vacuum tank.
Pull out the vent hose.
Remove the three mounting bolts and the actuator
with the bracket.
ACTUATORACTUATOR
CABLE
lf necessary, disconnect the cable end from the link-
age over the accelerator pedal, then turn the grom-
met 90' in the bulkhead. and remove the cable.
Install in the reverse order of removal, and adjust
free play at the actuator rod after connecting the
cable (see page 4-43).
I
6.
I
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Engine
Engine RemovaUlnstallation ................ 5-1
Cylinder Head/Valve Train ................... 6-1
Engine Bfock .......... ...........7-1
Engine Lubrication ...........8-1
Intake Manifold/Exhaust System ........ 9-1
Cooling ......... 10-1
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Cylinder Head/Valve Train
Speciaf Tools .............6-2
Valve Clearance
Adiustment ............6-3
Valve Seals
Replacement (cylinder head
removal not requiredl ................. 6-5
Crankshaft Pulley and Pulley Bolt
Replacement .........6-7
Timing Belt
I llustrated lndex ............................... 6-8
Inspection ............., 6-9
Tension Adjustment ........................ 6-9
Removal ...........,..... 6-10
lnstallation .............6-11
Crankshaft Speed Fluctuation (CKFI
Sensor
Replacement .........6-13
Cylinder Head
lllustrated lndex ............................... 6-14
Removal .................6-16
Warpage ................6-27
lnstallation ............. 6-30
Camshafts
lnspection ..............6-22
Valves, Valve Springs and Valve Seals
Removal ................, 6-23
lnstallation ............. 6-29
Valve Guides
Valve Movement ............,,,,.,............ 6-25
Replacement .........6-25
Reaming .................6-27
Valve Seats
Reconditioning ......6-28
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Valve Clearance
Adiustment
Adjust the valves only when the cylinder head tempera-
ture is less than 100"F (38"C).
1. Remove the cylinder head cover.
Remove the middle cover (see page 6-11).
Set the No. 1 piston at TDC. The "UP" mark on the
pulleys should be at the top, and the TDC marks on
the pulleys should align with the pointers on the back
POINTERPOINTER
Adjust the valves on No. 1 cylinder.
Intake: 0.08 - 0.12 mm (0.003 - 0.005 inl
Exhaust: 0.16 - 0.20 mm (0.006 - 0.008 in)
Loosen the locknut, and turn the adiustment screw
until the feeler gauge slides back and forth with a
slight amount of drag.
LOCI(NUT9 x 0.75 m.n
Adiusting Screw Locations:
INTAKE
No.4 No.3 No.2
(cont'd)
6-3
25 N.m 12.5 kgf.m, 18lbf.ft)
EXHAUST
No. 1
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Valve Clearancev
Adjustment (cont'dl
6. Tighten the locknut, and check the clearance agajn.
Repeat the adjustment if necessary.
GAUGE
Rotate the crankshaft 180" counterclockwise (camshaft
pulley turns 90').
The "UP" marks should be on the exhaust side. Adjust
the valves on No. 3 cylinder.
.UP" MARKS
7.
8. Rotate the crankshaft 180" counterclockwise to brinq
No. 4 piston to TDC.
The "UP" marks should be pointing straight down.
Adjust the valves on No. 4 cylinder.
Rotate the crankshaft 180'counterclockwise to brino
No.2 piston to TDC.
The "UP" marks should be on the intake side. Adiust
the valves on No. 2 cylinder.
Install the cylinder head cover (see page 6-32).
Retorque the crankshaft pulley bolt (see page 6-7).
10.
11.
"UP" MARKS
"UP" MARKS
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Valve Seals
Replacement (cylinder head removal not required)
The procedure shown below applies when using the in-
car valve spring compressor (Snap-on YA8845 with
YA8845-2A 7/8" auachment). Use approved eye protec-
tion.
1. Turn the crankshaft so that the No. 1 and the No. 4
pistons are at top dead center (TDC).
2. Remove the cylinder head cover.
3. Remove the distributor.
4. Loosen and disconnect the timing belt from the
camshaft pulleys.
5. Remove the camshaft holder bolts. then remove the
camshaft holders, the camshafts and rocker arms.
lntake Valve Seals
6. Using the 6 mm bolts supplied with the tool, mount
the two uprights to the cylinder head at the end
camshaft holders. The uprights fit as shown.
7. Insert the cross shaft through the top hole of the
two uprights,
at.
9.
Select the 7/8 in. diameter long compressor attach-
ment, and fasten the attachment to the front hole of
the lever arm with the speed pin supplied.
Position the piston at TDC, and insen an air adaptor
into the spark plug hole. Pump air into the cylinder
to keep the valve closed while compressing the
springs and removing the valve keepers.
10. Put shop towels over the oil passages to prevent
the valve keepers from falling into the cylinder
head.
Position the lever arm under the cross shaft so the
lever is perpendicular to the shaft and the compres-
sor attachment rests on top of the retainer for the
spring being compressed. Use the rear position slot
on the lever as shown,
't1.
OIL PASSAGE
OIL PASSAGES
(cont'd)
6-5
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