Abs HONDA CR-V 1999 RD1-RD3 / 1.G Owner's Manual

'98 - 00 mod€ls:
The scan tool indicates Diagnostic Trouble Code (DTC) P0452: A low voltage problem in the Fuel Tank Pressure
sensof.
The fuel tank Dressure sensor converts fuel tank absolute pressure into electrical signals and inputs the ECM/PCM.
OUTPUTVOLTAGEtvl{.5
0,5-? KPA(-50 mmHg,-2 in.Hgl
+7 kPr
l5O mmHg,2 in.Hgl
PRESSURE
ECM/PCM CONNECTOR A (32P)
Wire side ot female terminals
FUEL TANKPRESSURE SENSOR3P CONNECTOR tc6a6l
voc2(YEL/BLUI
Wire side ol fsmale terminals
(cont'd)
11-209
Th. MIL has been reoorted on.DTC m452 is stored.
Check the vacuum lin6:Check the vacuum lines of the fueltank pressure sensor for misrouting, leakage, breakage and clog-ging.
Are the vacuum lines OK?
Problem veriticstion:1. Do the ECM/PCM ResetProcedure-2. Remove the luelfillcap.3. Turn the ignition switch ONfl r).4. Monitor the FTP Sensor volt'age with the Honda PGMTester, or measure voltagebetween body ground andECM/PCM terminalA29.Intermittent failuro, system is OKat this lima. Chack lor Door con-nections or loose wi.es at C580llocrted rt access panell, C646lluel tank Daessure sensor) andat the ECM/PCM.
ls lhere approx. 2.5 V?
Check lor an open in wir€ lVeC2line):1. Turn the ignition switch OFF.2. Reinstallthe fuel fill cap.3. Disconnect the fuel tank pres-
sure sensor 3P connector,4. Turn the ignition switch ON (ll).
5- Measure voltage between thefLrel tank pressure sensor 3Pconnector No. 1 terminal andNo.2 terminal.
Replir opon in the wire b€tw€enth6 tuel tank pressure lensot andthe ECM/PCM {A29).ls there approx. 5 V?
YES
(To page 11-210)
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Disassembly
1.Remove the transfer covers A and B.
TRANSFER
TRANSFEF
Replace.
Cut the locktabs ofthe locknut using a chisel. Keep
of the chiseled particles out of the transfer housing
LOCKNUTLOCK TAB
atl
3. Hold the transfer shaft with a 14 mm Allen wrench
clamped in a bench vise.
Loosen the transter shaft locknut. The transfer shaft
locknut has lett-hand threads.
Remove the transfer shaft assembly, transfer drive
gear,25 mm thrust shim. transfer shaft collar. and
tapered roller bearing from the transfer housing.
TRANSFER SHAFTASSEMBLY
TAPERED ROLLERBEARING
TRANSFER SHAFTCOLLAR
TRANSFER DRIVE
GEAR
THRUST SHIM,25 mmSelective pan
(cont'd)
14 mm ALLEN WRENCH
13-47
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1. Remove the A/T gear position switch harness
cramp.
Remove the y'VT gear position switch cover.
Remove the bolt securing the ly'T gear position switch
harness clamp on the end cover, then remove the A/T
gear position switch.
Remove the 12 bolts securing the end cover. then
remove the cover.
Slip the special tool onto the mainshaft as shown.
6. Engage the park pawl with the park gear.
7. Cut the locktabs of each shaft locknut using a chisel as
shown. Keep all chiseled particles out of the transmis-
ston.
M=tt"
Align the hole of the sub-shaft 1st gear with the hole
of the transmission housing. then insert a pin to lock
the sub-shaft while removing the sub-shaft locknut.
Remove the locknuts and conical spring washers from
each shaft.
NOTE:
Mainshaft and countershaft locknuts have left-
hand threads.
Clean the old countershaft locknut. lt is used to
install the press fit park gear on the countershaft.
MAINSHAFT
PIN8 mm pin,
commercially
SUB-SHAFTLOCKNUTReplace.COUNTERSHAFTLOCKNUTReplace.
CONICAL SPNING WASHERSReplace.
9. Remove the lock pin that was installed to hold the
sub-shaft.
10. Remove the special tool from the mainshaft.
11. Remove the 1st clutch, mainshaft 1st gear assembly,
and mainshaft 1st gear collar.'12. Remove the sub-shaft 1st gear.
13. Remove the park pawl, pawl spring, pawl shaft. and
pawl stoP.
14. Remove the park lever from the control shaft.
15. Using a universal two jaw puller, remove the park
gear, one-way clutch, and countershaft 1st geal
assemblv.
{Commercially available)
1SY GEAR
Remove the needle bearing and countershaft 1st gear
co ar.
Remove the ATF cooler lines,
LOCKNUTReplace.
2\
Irot)
PULLER
11.
14-187
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Disassembly
1. Remove the transfer covers A and B.
2. Cut the lock tabs of the locknut usino a chisel.
LOCK TAB
5.
Put a 14 mm Allen wrench in the gear side of the
transfer shaft, then secure the Allen wrench in a
bench vise.
Remove the transfer shaft locknut and the conical
spring washer. The transfer shaft locknut has left
hand threads.
Remove the transfer shaft, transfer drive gear, 25
mm thrust shim, transfer shaft collar, and tapered
roller bearing from the transfer housing.
TRANSFER SHAFT
THRUST SHIM,25 mrnSelective part
CONICAL SPRINGWASHERReplace.
(cont'd)
1a mm ALLEN WRENCH
14-235
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ATF Cooler Hoses
Gonnection
'1. Connect the ATF cooler hoses to the ATF cooler lines. then secure them with the cliDs.
2. Face the tabs of the clips of the transmission side toward the radiator, and face the tabs of the ATF cooler side down-wa rd.
CLIPFace tabs toward radiator.
ATF COOLER LINEATF COOLER LINE
TRANSMISSION
6-8mm(0.2 - 0.3 inl
ATF COOLER
HOSE CLAMP
CLIPFace tabs downward.
2-rlmm10.1 - 0.2 inl
14-266
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Description
Rear Differential
Outline
The Real-time 4WD-Dual Pump System model has a hydraulic clutch and a differential mechanism in the rear differential
assembly. Under normal conditions, the vehicle is driven by the front wheels. However, depending on to the driving force
of the front wheels and the road conditions. the system instantly transmits appropriate driving force to the rear wheels
without requiring the driver to switch between 2WD (tront wheel drive) and 4WD (four wheel drive). The switching mecha-
nism between 2WD and 4WD is integrated into the rear differential assembly to make the system light and compact.
ln addition, the dual-pump system switches off the rear-wheel-drive force when braking in a forward gear. This allows the
braking system to work properly on models equipped with an Anti-lock Braking System (ABS).
Construction
The rear differential assembly consists of the torque control differential case assembly and the rear differential carrier
assembly. The torque control differential case assembly consists of the differential clutch assembly, the companion
flange, and the oil pump body assembly. The rear differential carrier assembly consists of the differential mechanism. The
differential drive and driven gears are hypoid gears.
The oil pump body assembly consists of the front oil pump, the rear oil pump, the hydraulic control mechanism, and the
clutch piston. The clutch piston has a disc spring that constantly provides the differential clutch assembly with a preset
torque to Drevent abnormal sound.
The clutch guide in the differential clutch assembly is connected to the propeller shaft via the companion flange, and it
receives the driving force lrom the transfer assembly. The clutch guide rotates the clutch plate and the front oil pump in
the oil pump body.
The clutch hub in the differential clutch assembly has a clutch disc that is splined with the hypoid drive pinion gear. The
hypoid drive gear drives the rear oil pump.
The front and rear oil pumps are trochoidal pumps. The rear oil pump capacity is 2.5 percent larger that the front oil pump
to handle the rotation difference between the front and rear wheels caused by worn front tires and tight corner braking.
The oil pumps are designed so the fluid intake works as a fluid discharge when the oil pumps rotate in reverse. Genuine
Honda CVT fluid is used instead of differential fluid.
Operation
When there is a difference in rotation speed between the front wheels (clutch guide) and rear wheels (hypoid driven gear),
hydraulic pressure from the front and rear oil pumps engages the differential clutch, and drive force from the transler
assembly is applied to the rear wheels.
The hydraulic pressure control mechanism in the oil pump body selects 4WD mode when the vehicle is started abruptly,
or when accelerating in a forward or reverse gear (causing rotation difference between the front and rear wheels). or
when braking in reverse gear {when decelerating). lt switches to 2WD mode when the vehicle is driven at a constant speed
in forwar! or reverse gear (when there is no rotation difference between the front and rear wheels), or when braking in a
fo rwa rd gear (when decelerating).
To protect the system, the differential clutch assembly is lubricated by hydraulic pressure generated by the oil pumps in
both 4WD and 2WD modes. Also, the thermal switch relieves the hydraulic pressure on the clutch piston and cancels 4WD
mode if the temDerature of the differential fluid rises above normal.
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13, Pull the knuckle outward, and remove the driveshaft
inboard joint from the differential case or bearing
suoDort.
KNUCKLE
Remove the driveshaft outboard joint from the front
wheel hub using a plastic hammer.
PLASTIC HAMMER
14.
DRIVESHAFT
DRIVESHAFT
Disassembly
Inboard Joint Sid€:
1, Carefully clamp the driveshaft in a vise with softjaws, then remove the set ring from the inboardjoint.
2. Remove the boot bands. Take care not to damage
the boot,
. lf the boot band is a locking tab type, pry up the
locking tabs with a screwdriver, and lift up the
end of the band.
. lf the boot band isawelded typeora low profile
type, carefully cut the boot band with a pair of
diagonal cutters.
. lf the boot band is a double loop type. lift up the
band bend.
Locking Tab
SET BINGReplace.
Welded
{cont'd)
16-5
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Outboard Joint Side:
1. Lift up the three tabs with a screwdriver, then
remove the boot bands, Take care not to damage
the boot.
NOTE:
. lf the boot band is a double loop type, lift up the
band bend.
. lf the boot band is a welded type, cut the boot
band.
. lf the bootband isa lockingtabstype. pry upthe
tabs with a screwdriver, and lift up the end of the
oano.
Ear Clamp
EAR CLAMP BANDReplace.
2. Slide the outboard boot to the inboard ioint side.
Wipe off the grease to expose the driveshaft andthe outboard joint inner race.
Mark the driveshaft at the same position of the out-
board joint end with paint.
TAB
DRIVESHAFT
PAINT MARK
5, Carefullv clamD the driveshaft in a vise.
THREADED AOAPTER,2iI x 1.5 mm07xAc - 0010200
Remove the outboard joint using a special tool asshown.
Remove the driveshatt trom the vise
Remove the stop ring from the driveshaft.
o.
7.
8.
STOP RINGReplace.
Slide hammc..5/8'x lS Throad(Commerically, available)
DRIVESHAFT
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8. Installation is the reverse ofthe removal procedure.
Note these items during installation:
. Be sure the wires are not caught or pinched by
any parts when installing the column.
a Make sure the wire harness is routed and fas-
tened properly.
. Make sure the connectors are properly connected.
. Make sure the steering joint is connected as fol-
lows:
a. lnsert the uDper end of the steering joint onto
the steering shaft (line up the bolt hole with
the flat ot the shaft).
b. Slip the lower end of the steering ioint onto
the Dinion shaft (lins up the bolt hole with the
groove around the shaft). and installthe lower
ioint bolt. Be sure that the lower joint bolt is
securely in the groove in the pinion shaft'
c. Pull on the steering joint to make sure that the
steering joint is JullY seated.
Then install the upper joint bolt and tighten it.
22 N.m (2.2 kgf.m, 16lbt.ftl
UPPER JOINT BOLT
Bolt must Iine uPwith fl6t on shaft.
Flat ponion.
SIEERING JOIMT
STECRING JOINT
LOWER JOINT BOLTBolt must line up withgroove around on shaft,
Inspection
Check the steering column ball bearing and the steer-
ing joint bearings for play and proper movement. lf
there is noisy or if there is excessive play, replace the
steering column as an assemblY
Check the retaining collar for damage. lf it is dam-
aged, replace the retaining collar.
PLASl'tCINJECTIONS
ABSOBBINGPLATE
SHIFT I.EVER
. Check the absorbing plates, absorbing plate guides
and sliding capsules Jor distortion and breakage.
ReDlace the column as an assembly if they are dis-
torted or broken.
SLIDING CAPSUIIThis part is attachedto the column bracketwith the plastic injections.
FETAINING COLLAR
ABSORBINGPLATE GUIDE
|GNMON SWTTCHSee section 23.(cont'd)
17-21
See section 14.
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67. Apply grease to the circumference of the rack end
housing.
68.
69.
RACK END GROOVE
.={@
SILICONE GREASE
Apply a light coat of silicone grease to the boot
grooves on the rack ends.
lnstall the boots in the rack end with the tie-rod
clips.
NOTE: Install the boots with the rack in the straight
ahead position (right and left tie-rods are equal in
length).
RACK ENO
NOTE: Wipe the grease offthe thread section.
TIE.ROD CLIP
17-49
70. Adiust the air hose fitting position of the boots by
turning it as shown below.
LEFT BOOT{Viewed from theleft side)
+rom
''rT.a'.
, tri"
\,'tAr-
{,1@}tr
)Fr1
/\
RIGHT BOOT(Viewed trom theright side)
Front
+
BOOT AIR HOSE FITTING
71. Install new boot bands on the boot, and bend both
sets of locking tabs.
CAUTION: Stake the band locking tabs firmly.
Lightly tap on the doubled-over portions to reduce
their height.
Slide the rack right and left to be cenain that the
boots are not deformed or twisted.
(cont'd)
FIT'I'ING
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