front end HONDA CR-V 1998 RD1-RD3 / 1.G User Guide
[x] Cancel search | Manufacturer: HONDA, Model Year: 1998, Model line: CR-V, Model: HONDA CR-V 1998 RD1-RD3 / 1.GPages: 1395, PDF Size: 35.62 MB
Page 275 of 1395
ECM/PCM CONNECTOF C (31PI
Wire side o{ female terminal€ECM/PCM CONNECTOR C (31P)NOTE: Standard battery voltage is 12 V.
TermidalD.3criptionSignal
8LI(WHTPOzSHTC {PRIII4ABY HEATEDOXYGEN SENSOR HEATERCONTROL)
Drivss prim6ry h$ted oxygsn sensorWilh ignition switch ON (ll): baneryvoltsgeWith ftrllywarmsd up €ngine runnang: duty
2"WHT/GBNALTC (ALTERNATOR CON,TROL)Sonds alternalor control signsl.With fully wafmod up €ngine rnningr ban€ryvoltagoDu ng driving with small elsctrical lo6d: 0 v
3'1FED/8LUKS (KNOCK SENSOR)Dstects KS signal.With engine knockang: pulses
5WHT/REDALTF (ALTERNATOR FR SIG-NAL}Detects alternator FR signal.Wth fullywarmed up €ngine running:0 V-batteryvoltag€ {d€pending on slsctrical load)
1GRN,4trHTSG1 (SENSOR 680UND}Ground for l/tAP sensor.L€ss than 1.0 v 6t all times
8BLUCKPP (CKP SENSOF P SIDE)Dat€cls CKP s6nsor.With €ngin€ runningr puls€s
9CKPI.,I| {CKP SENSOF M SIDE)Ground for CKP s€nsor.
15PHO2S {PRIMARY HEATEDOXYGEN SENSOR, SENSOR 1)Detocts pfimary he6t6d oxygen ssnsor
{sonsor 1)signal.with ihfottls fully opened from idle with fully,
walm6d up engins: above 0.6 VWith throttlo quickly clossd: below 0.4 v
17RED/GRNMAP (MANIFOLD ABSOLUTEPRESSURE SENSOR)
D6tects MAP s€nsor sign6l.With ignition switch ON (ll):about 3 VAt idls: aboul 1.0 V {dspsnding on engine speed)
18GRN/BLKSG2 (SENSOB GNOUNDiLsss than 1.0 V at all tim€s
19YEUBEDVCCl {SENSOR VOLTAGE)Power soufce to MAP s€nsor.With ignition switch ON (ll): about 5 VWith ignition switch OFF:0 V
20GRNTDCP {TDC SENSOR P SIDE)Derecis TDC sensor.With engine funning: Pulses
2lREDTDCM ITDC SENSOR M SID€)Ground for TDC sensor.
22BLU/REDCKFP (CKF SENSOR PSIDE)Dstscts CKF s€nsor.With sngins running: pulsss
23BLU/WHTVSS (VEHICLE SPEED SEN-soR)Dstscrs vss signal.With ignition switch ON (ll)and front wheelsrotaringrcyclss 0 v- 6bout 5 V or ban€ry voltage
25RED//ELIAT (INTAKE AIR TEMPERA'TURE SENSOB)Detacts IAT sensor signal.With igniiion switch ON (ll): about 0.1 - 4.8 V(d€p€nding on iniate air t€mp€raturc)
26REO/WHTECT {ENCINE COOLANTTEMPERATURE SENSOR)oetscts ECT sensor signal.With ignition switch ON (ll): about 0.1 4.8 V
{doponding on 6ngin€ coolanl lemper6tu16)
27RED/BLKTPS (THROTTLE POSITIONSENSOR)Dotects TP sensor signrl.with rhrottls fully op€n: aboui 4.8 vwith throtrl6 fullyclosed: about 0.5 v
2AYEUBLUVCC2lSENSOR VOLTAG€}Provid€s s€nsor voltage.With ignilion switch ON (ll): about 5 VWhh ignition switch OFF: 0 V
29YELCYPP ICYP SENSO8 P SIDE)Dsrscts CYP sensor.With €ngins runningr pulsss
30BLKCYPM (CYP SENSOR M SIDE)Ground for CYP sansor.
31WHT/REDCKFM {CKF SENSOR M SIDE)6.ound lof CKF ssnsor signal.
11. AfT 13. '94 model'2:M/T 14:'99- 0o modsls.5: USA
(cont'd)
11-73
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Page 449 of 1395
Transmission Assembly
Removal (cont'd)
20. Remove the intermediate shaft.
21.Tie plastic bags over the both ends of the intermedi-
ate shaft. Coat all precision finished surfaces withclean engine oil.
Remove the rear engine stiffene. and clutch hous-Ing cover.
13-10
23. Remove the right front mounvbracket.
RIGHT FRONTMOUNT/BRACKET
Place a jack under the transmission, raise it just
enough to take it off of the mounts, then remove
the transmission mount bracket and transmission
mount.
TRANSMISSION MOUNT
MOUNT BRACKET
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Page 519 of 1395
Description
General Operation
The Automatic transmission is a 3-element torque converter and triple-shaft electronically controlled unit which provides 4
speeds forward and 1 reverse speed The unit is positioned in line with the engine'
There are two tvoes of automatic transmission on CR-V; the four-wheel drive (4WD) model ('97 - 00)' and the front-wheel
drive (2WD) model ('98 - 00).
Toroue Converter, G€ars, and Clutches
The torque converter consists of a pump. turbine. and stator assembly in a single unit. The torque converter is connected to
the engine crankshatt. These parts turn together as a unit as the engine turns. Around the outside of the torque converter is
a ring gear which meshes with the starter pinion when the engine is started. The torque converter assembly serves as a fly-
wheel while transmitting power to the transmission mainshaft.
The transmission has three parallel shafts: the mainshaft. the countershaft, and the sub-shaft. The mainshaft is in line with
the engine crankshaft. The mainshaft includes the 1st, 2nd. and 4th clutches, and gears lor 3rd,2nd,4th. reverse and 1st
(3rd gear is integral with the mainshaft, while reverse gear is integral with the 4th gear). The countershaft includes the 3rd
clutch and gears for 3rd,2nd, 4th, reverse, 1st, and park. Reverse and 4th gears can be locked to the countershaft at its cen-
ter, providing 4th gear or reverse, depending on which way the selector is moved. The sub-shaft includes the lst-hold
clutch and gears for lst and 4th.
The gears on the mainshaft are in constant mesh with those on the countershaft and sub-shaft. When certain combinations
of gears are engaged by the ctutches, power is transmitted from the mainshaft to the countershaft to provide E, D!, tr, tr,
and E position ('97 - 98 models). and E. E, E, and E position ('99 - 00 models)'
Electlonic Control
The electronic controt system consists of the Powenrain Control Module (PCM), sensors, a linear solenoid, and four
solenoid valves. Shifting and lock-up are electronically controlled for comfortable driving under all conditions. The PCM is
located below the dashboard, under the kick panel on the passenger's side.
Hydraulic Control
The valve bodies include the main valve body, the secondary valve body, the regulator valve body, the servo body, and
the lock up valve body. They are bolted to the torque converter housing. The main valve body contains the manual valve,
the 1-2 shift valve, the 2nd orifice control valve. the CPB {Clutch Pressure Back-up) valve, the modulator valve, the servo
control valve. the relief valve, and ATF pump gears. The secondary valve body contains the 2-3 shift valve, the 3-4 shift
valve, the 3,4 orifice control valve. the 4th exhaust valve and the CPC (Clutch Pressure Control) valve. The regulator valve
bodv contains the pressure regulator valve, the torque converter check valve, the cooler relief valve, and the lock-up con-
trol valve. The servo body contains the servo valve which is integrated with the reverse shift tork, and the accumulators
The lock-up valve body contains the lock-up shift valve and the lock-up timing valve. The linear solenoid and the shift con-
trol solenoid valve Ay'B are bolted to the outside of the transmission housing, and the lock-up control solenoid valve Ay'B is
bolted to the outside of the torque converter housing. Fluid trom the regulator passes through the manual valve to the
various control valves. The clutches receive fluid from their respective feed pipes or internal hydraulic circuit
ShiftControl Mechanism
input from various sensors located throughout the vehicle determines which shift control solenoid valve the PCM will acti-
vate. Activating a shift control solenoid valve changes modulator pressure, causing a shift valve to move. This pressurizes
a line to one of the clutches. engaging that clutch and its corresponding gear. The shift control solenoid valves A and B are
controlled by the PCM.
Lock-up Mechanism
tn E! position (,97 - 98 modets) and in E position ('99 - O0 models), in 3rd and 4th, and in Del position in 3rd ('97 - 98
models) and in El position with Over,Drive (O/D) is OFF (by pressing rhe O/D switchl in 3rd ('99 - 00 models), pressurized
fluid is drained from the back of the torque converter through a fluid passage, causing the lock-up piston to be held
against the torque converter cover, As this takes place, the mainshaft rotates at the same speed as the engine crankshaft.
Together with hydraulic control, the PcM optimizes the timing of the lock-up mechanism The lock-up valves control the
range of lock-up according to lock-up control solenoid valves A and B, and the linear solenoid. When lock-up control
solenoid valves A and B activate, the modulator pressure changes. The lock-up control solenoid valves A and B and the
linear solenoid are controlled by the PCM.
{cont'd)
14-3
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Page 656 of 1395
A/T Gear Position Switch
Replacement
@ Make 3ure lifts, iacks, and safety stands
ar€ placod properly lsoo soction 1).
1. Raise the front of the vehicle, and support it with
safety stands (see section 1).
2. Set the parking brake, and block both rear wheels
securely.
3. Shift to E position.
Remove the A/T gear position switch connector
from the connector bracket, then disconnect it.
Remove the AfI gear position switch harness clamp.
5x1.0mm12Nm11.2kgf.m,8.7 tbf.fttBRACIGT
14-140
6. Remove the harness clamp from the end cover,
then remove the Aff gear position switch cover and
Ay'T gear position switch.
A/T GEAF POSITIONswrTcH covER6x1.0mm12 N.m 11.2 kgt m.8.7 lbf.ftl
1.Set the IVT gear position switch to E position. The
AfI gear position switch clicks in E position.
POSmON
6x1.0mm12 N.m
{1.2 kg{.m,8.7 lbtftl
swlTcH
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Page 676 of 1395
Fluid Level
Checking
NOTE: Keep all foreign particles out of the transmis-
ston,
1. Warm up the engine to normal operating tempera-ture (the radiator fan comes on)
Park the vehicle on level ground. Turn off theengine.
Remove the dipstick (yellow loop) from the trans-mission, and wipe it with a clean cloth.
Insert the dipstick into the transmission.
DIPSTICK
Remove the dipstick and check the fluid level. lt
should be between the upper and lower marKs.
lf the level is below the lower mark. pour the recom-mended fluid into the filler hole to bring it to the uppermark, Always use Genuine Honda Premium FormulaAutomatic Transmission Fluid (ATF). Using a non-Honda ATF can affect shift oualitv.
lt
El--
UPPERMARKMARK
14-160
7. Insert the dipstick back into the transmission in the
direction shown.
DIPSTICK
FRONT
-'-Y'
Insrall the dipstick within
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Page 677 of 1395
Pressure Testing
Changing
NOTE: Keep all foreign particles out of the transmis-
sion.
1. Bring the transmission up to operating temperature
(the radiator fan comes on) by driving the vehicle.
Park the vehicle on level ground. turn the engane
off. then remove the drain Plug.
NOTE: lf a cooler flusher is to be used, see page
14-264 and 14-265.
TRANSMISSIONEND COVER
DRAIN18 x 1.5 mmSEALING WASHEBReplace.49 N.m {5.0 kgt.m, 36 lbf.tl)
Reinstall the drain plug with a new sealing washer,
then refill the transmission with the recommended
fluid to the uDper mark on the dipstick. Always use
Genuine Honda Premium Formula Automatic
Transmission Fluid (ATF) Using a non-Honda ATF
can affect shift quality.
Automatic Transmission Fluid Capacity:
4WD;
2.9 { (3.1 US qt. 2.6 lmp qt) 8t change
5.8 ? {7.2 US $, 6.0 lmp qt} at ovethaul
2WD:
2.7 | l2.S US qt,2.1lmp qtl ai change
5.9 ? {6.2 US $, 5.2 lmp qtl at ovolhaul
2.
a
a
1.
Wlrile testing, be careful of the rotaling wheols.
Mako sure lifts, iacks, and safety stands ar€ placed
properly (see scction 11.
Before testing, be sure the transmission fluid is
filled to the proPer level.
4WD:
Raise the vehicle (see section 11.
2WD:
Raise the front of the vehicle, and make sure it is
securely supported. Set the parking brake, and block
both rear wheels securely.
Allow all four wheels {4WD) or front wheels (2wD}
to rotate freely.
Warm up the engine (the radiator fan comes on),
then stop it and connect the tachometer.
Connect the oil pressure gauges to each inspection
hole securely, and do not allow dust or other foreign
particles to enter the inspection holes.
TOROUE: 18 N'm ll.8 kgf'm, 13 lbf'ft)
5.
A/T PRESSURE HOS€,2210 mm07MAJ - PYiOllA
{4 Requircd}
,4'/"' ,a
W'
A/T PRESSURE HOSEADAPTER07MAJ - PYt0120(il Rcquiledl
6. Measure the following Pressure:. Line Pressure ..........,14-162
. 1st. 1st-hold Clutch Pressure .............'. 14-162
. 2nd,3rd and 4th Clutch Pressure .......... 14-163
7. Install new sealing washers and the sealing bolts in
the inspection holes, and tighten to the specified
toroue.
(cont'd)
A/T OIL PRESSUREGAUGE SET W/PANEL07{06 - 0020400
/4\\-J-- (
+..\.-.\-'-\
A/T LOW PBESSUREGAUGE w/PANEL07406 - 0070300
TOROUE: 18 N'm 11.8 kgf'm, 13 lbf'ft)
14-161
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Page 681 of 1395
Transfer Assembly
Removal
@ Make sure the lifts, iacks, and safety
stands are placed properly (see section 11.
1. Raise the front of the vehicle, and make sure it is
supported securely.
2. Set the parking brake, and block both rear wheels
securelv.
3 Drain the automatic transmission fluid (ATF).
Reinstall the drain plug with a new sealing washer'
DRAIN PLUG'18 x'1.5 rnm49 N.m 15.0 kgf.m, 36 lbl.ftl
4. Remove the guard bar and the splash shield.
GUARD 8AR
14-165
5.Disconnect the primary heated oxygen sensor
{Primary HO2S) connector.
Remove exhaust pipe A.
SELF-LOCKINGNUTBeplace.
7.
SEI-F.LOCKINGNUTReplace.
NUTReplace
Remove the shift cable cover.
Remove the snap pin and control pin, then separate
the shift cable from the control lever. Do not bend
the shift cable excessively.
(cont'd)
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Page 688 of 1395
Transmission
21.
Removal (cont'dl
Make reference marks across the transfer assemblv
and propeller shaft flanges. (4WD)
Separate the propeller shaft from the transfer
assembly. (4WD)
I x 1.25 mmReplace.
Remove the intermediate shaft,
Tie plastic bags over the both ends of the intermedi-
ate shaft. Coat all precision finished surfaces with
clean engine oil.
22.
REFERENCE MARKS
14-172
24.Remove the right front mounvbracket.
Remove the ATF cooler hoses at the ATF cooler
lines. Turn the ends of the cooler hoses uo to ore-
vent ATF from flowing out, then plug the lines and
hoses. Check for any sign of leakage at the hose
ioints.
RIGHT FRONTMOUNT/BRACKET
Remove the rear stiffener and torque converter
cover.
Remove the eight drive plate bolts, one at a time.
while rotating the crankshaft pulley.
27.
COVER
DRIVE PLATE
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Page 776 of 1395
Transmission
Installation (cont'dl
8. Install the transmission housing mounting bolts.
TRANSMISSION HOUSING MOUNTING BOLTS12 x 1.25 mm54 N.m 16,5 kgf.m, a7 lbtftl
9. Remove the transmission jack.
10. Attach the torque convener to the drive plate witheight bolts. Rotate the crankshaft as necessarv totighten the bolts to 'll2 of the specified torque, thento the final torque, in a crisscross pattern. Aftertightening the last bolt. check that the crankshaftrotates freelv.
6x1.0mln12 N.m (1.2 tgt m,8.t lbf.frl
6x1.0mm12 N.m {1.219{.m,8.7 tbtft,
12 x t.25 mm34 N.m 13.5 kgf.rn,25 lbf.ft)
8 x 1.25 mm2a N.m 12.5 kgf'm,18 tbt.ftl
DRIVE PLATE
STIFFENER
44 N.rn (4.5 kgt m, 33 lbtftl
11.
12.
Install the torque convener cover and the rear stiff_ener.
Tighten the crankshaft pulley bolt as necessary (seesection 5).
14-260
13. Connect the ATF cooler hoses to the ATF coolerlines (see page 14-266).
. ATF COOLERLINE
'i 'l'r',:,.) -
10 x 1.25 mm44 N.m (4.5 kgf.m,33 tbtftl
CLAMP
12 x 1.25 mm64 N.m 16.5 kg{.m,a7 tbt.ftlFRotrtT
15.
16.
't 4.
SET RINGReplace.
MOUNT/ARACKET
Install the right front mounvbracket.
Install new set rings on the ends of the intermediateshaft and the driveshaft.
Clean the areas where the intermediate shaft con_tacts the transmission {differential) with solvent orcarburetor cleaner, and dry with compressed air.Then install the intermediate shaft in the differen_tial, While installing the intermediate shaft, be surenot to allow dust or other foreign panicles to enterthe transmission.
l0 x 1.25 mm39 N.m 14.0 kgt.n,29 tbf.ftl
INTERMEDIATE SHAFT
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Page 794 of 1395
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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