Manual transmission HONDA CR-V 1999 RD1-RD3 / 1.G Manual Online

Description
Electronic Control System (cont'd)
Descending Control
When the PCM determines that the vehicle is going down a hill in E and @ positions ('97 - 98 models). and in @ posi-
tion {'99 - 00 models), the shitt-up speed from 3rd to 4th gear and from 2nd to 3rd (when the throttle is closed) becomes
faster than the set speed for flat road driving to widen the 3rd gear and 2nd gear driving areas. This, in combination with
engine braking from the deceleration lock-up, achieves smooth driving when the vehicle is descending. There are three
descending modes with different 3rd gear driving areas and 2nd gear driving areas according to the magnitude of a gradi-
ent stored in the PCM. When the vehicle is in 4th gear, and you are decelerating when you are applying the brakes on a
steep hill, the transmission will downshift to 3rd gear, When you accelerate, the transmission will then return to higher
gear.
2ND - 3RD 3RD - 4TH
o50
F
DESCENDING MODE: Downshift Schodule
- : FLAT ROAD MODE
----'-----' I GRADUAL DESCENDING MODE
- - - - - : MEDIUM OESC€NOING MODE
. . ... : STEEP DESCENDING MODE
62 mph Vehicle sp€ed1100 km/hl
Deceleration Control
When the vehicle goes around a corner, and needs to decelerate first and then accelerate, the PCM sets the data for deceleration
control to reduce the number of times the transmission shifts. When the vehicle is decelerating from speeds above 27 mph(4i| km,ih), the PCM shifts the transmission from 4th to 2nd earlier than normal to cope with upcoming acceleration,
14-20
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Description
Hydraulic Control
The hydraulic control system is controlled by the ATF pump, valves, accumulators, and electronically controlled solenoids.
The ATF pump is driven by splines on the end of the torque converter which is aftached to the engine. Fluid from the ATF
pump flows through the regulator valve to maintain specified pressure, through the main valve body, to the manual valve,
directing pressure to each clutch. The valve body includes the main valve body, the regulator valve body, the lock-up
valve body, the secondary valve body, the servo body, the linear solenoid, the shift control solenoid valve Ay'B assembly,
and the lock-up control solenoid valve A/B assembly. The shift control solenoid valve A,/B assembly and the linear
solenoid are bolted on the outside of the transmission housing. The lock-up control solenoid valve A,/B assembly is bolted
on the outside of the torque converter housing.
LINEAR
SHIFT CONTROLSOLENOID VALVE A/BASSEMBLY
SECONDARY VALVEBODY
REGULATORVALVE BOOY
VALVE BODY
SOLENOID VALVE A/BASSEMELY
N
ATF PUMP GEARS
14-24
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Description
Hydraulic Flow (cont'dl
lll Position
As the engine turns, the ATF pump starts to operate. Automatic transmission fluid (ATF) is drawn from (99) and dis-charged into (1). Then, ATF flowing from the ATF pump becomes line pressure ('l). Line pressure (1) js regulated by theregulator valve. Torque converter inlet pressure {92) enters (94) of the torque conveTter through the lock-up shift valve anddischarges into (90) The torque converter check valve prevents torque converter pressure from rising. Under this condi-tion, hydraulic pressure is not applied to the clutches.
NOTE;
. When used. "|eft" o. "right" indicates direction on the hvdraulic circutt.. The hydraulic circuit shows the '97 - 98 models {7 positions}; the '99 - 00 models (6 positions) is similar.
'lF'.j.l
14-30
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Lock-up System
TOROUE CONVERTER
In E position ('97 - 98 models) and in E position ('99 -
OO models) (3rd and 4th), and E position ('97 - 98 mod-
els) and in E position with Over-Drive (O/D) is OFF (by
pressing the O/D switch) ('99 - 00 models) (3rd), pressur-
ized fluid is drained from the back of the torque convert-
er through a fluid passage, causing the lock-up piston to
be held against the torque converter cover, As this takes
Dlace, the mainshaft rotates at the same speed as th8
engine crankshaft. Together with the hydraulic control,
the PCM optimizes the timing of the lock-up system.
Under certain condltions. the lock-up clutch is appli€d
during deceleration, in 3rd and 4th gear.
The lock-up system controls the range of lock-up sccord-
ing to lock-up control solenoid valves A and B, and ths
linear solenoid. When lock-up control solenoid valves A
and B activate. modulator pressure changes. Lock-up
control solenoid valves A and B are mounted on the out-
side of the torque converter housing, and the linear
solenoid is mounted on the transmission housing. They
are controlled bv the PCM.
The table below shows the lock-up conditions for lock-up
control solenoid valves and linear solenoid pressure.
LINEAR SOLENOID PRESSURE
(cont'd)
LOCK.UP CONTROL' VALVE
LOCK.UP CONTROLSOLENOID VALVE
AB
MODULATORPf,ESSURE
MAINSHAFT
COUNTERSHAFT
SUB.SHAFT
Lock-up
Conditions
Lock-up Conirol
Solenoid valveLinaal
Solenoid
PrgssulsAB
Lock-up OFFOFFOFFHigh
Lock-up, HalfONDuty operation
OFF - ONLow
Lock-up, FullONONHigh
Lock-up
during
deceleration
ONDuty operation
OFF - ON
RELIEF VALVE
LOCK'UP TIMINGVALVE
COOLER RELIEF VALVE
ATF COOLERATF STRAINER
ATF PUMP
14-39
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NOTE: When the OBD ll Scan Tool or Honda PGM Tester indicate DTC(s) for the automatic transmission control system'
the scan tool or tester indicates code P0700 simultaneously. code P07oo means a detection of some automatic transmis-
sion problem in the PGM-Fl control system
lf the self-diagnostic E indicator light does not blink, perform an inspection according to the table below.
NOTE: lf a customer describes the symptom for code P1706 (6), it will be necessary to recreate the symptom by test-driv-
ing, then recheck the OTC.
SymptomInspectionRef. page
E indicator light is on constantly (not blinking) whenever the ignition
switch is ON (ll).14-86
E indicator light does not come on for two seconds after ignition
switch is first turned ON (ll).
't 4-41
Shift lever cannot be moved from @ position with the brake pedal
Dressed,Check shift lock system14-89
lgnition key cannot be moved from ACC (l) position to LOCK {0) posi
tion with the shift lever in E position.Check keY interlock system14-91
14-61
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NOTE: When the OBD ll Scan Tool or Honda PGM Tester indicate DTC(S) for the automatic transmission control system,
the scan tool or tester indicates code P0700 simultaneously. Code P0700 means a detection of some automatic transmis-
sion problem in the PGM-Fl control system.
lf the self-diagnostic E or E indicator light does not blink, perform an inspection according to the table below.
NOTE: lf a customer describes the symptom for code P17OO (6), it will be necessary to recreate the symptom by test-driv-
ing. then recheck the DTC.
SymptomInspectionRef. page
E or E indicator light does not come on for two seconds after ignition
switch is first turned ON (ll).14-123
E or E] indicator light is on constantly (not blinking) whenever the
ignition switch is oN {ll).
14-125
Shift lever cannot be moved from E position with the brake pedal
presseo.Check shift lock system14-'t26
lgnition key cannot be moved from ACC (l) position to LOCK (0) posi-
tion with the shift lever in E position.Check key interlock system14-129
O/D OFF indicator light does not come on for two seconds after ignition
switch is first turned ON (ll). ('99 - 00 models)14-131
The O/D OFF indicator light is on constantly whenever the ignition
switch is ON (ll). ('99 - 00 models)14-132
The O/D OFF indicator light does not come on even though the Over-
Drive (O/Dl switch is pressed in E position. ('99 - 00 models)
Check Over-Drive {O/D}
switch circuit14-133
14-63
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Electrical Troubleshooting {'97 Model)
Troubleshooting Flowchart - Mainshaft Speed Sensor
Po$ible Cau3o
. Disconnocted mainshaft speod sen-sot connectot. Short or open in mainsh.ft sp6ed
' Faulty meinshaft spoed sensor
NOTE: Code P0715115) on the PCMdoesn't always mean there's an electricalproblem in the mainshaft or counlersharlspeed sensor circuit; code P0715(15) mayalso indicate a mechanical problem in thetransmission. Check the freeze data witha Honda PGM Tester. lf the mainshaftspeed sensor rpm was 0, proceed withthis troubleshooting. lf not, the probablecause is a mechanical problom within thetransmission,
MAINSHAFT SPEEOSENSOR CONNECTOR
_E_
ItiT,ll-F=r
9t
LJ
Terminal side of male terminals
PCM CONNECTOR B {25P'
Wire side of female terminals
. OBD ll Scan Tool indic.t6 Codem715.. Self-diagnosis E indic.tor lightindicatag Code 15.
Check and record the freeze datain case it is needed later {or prob,lem verification.
Check the mainshaft and counter-shaft speed sensor installation,and checkthe sensors for damage.
Are the mainshaft and counter-shaft speed sensors installedproperly, and not damaged?Reingtall or reolace and recheck.
Meaaure MaiNhatt Spoed Sen3orR6sist!nce at the Sensor Con-necaor:1. Disconnect the 2P connectorfrom the mainshaft speed sen-sor connector.2. lreasure the resistance of themainshaft speed sensor.
ls the resistance 400 - 600 O?
Check Mainahaft Speed Sensortor a Short Circuit:1. Disconnect the B (25P) connec-tor lrom the PCM.2. Check for continuity betlveenbody ground and 815 terminaland the 814 terminal individu-
ReDair short in the wir€6 b€t reenthe 815 and 814 torminals andthe mainsh!ft sp€ed sensor.
To page l4-79
14-78
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From page 14 82
Replace the Lock-up ControlSolenoid Valve Assembly andRecheck:1. Replace the lock-up controlsolenoid valve A/B assembly(see page 14-'135).2. Turn the ignition switch OFFand reset the PCM by remov-ing the BACK uP (7.5 A) fusein the under-hood fuse/relaybox for more than 10 seconds.3. lJsing the scan tool, check tobe sure that the engine coolanttemperature is 176"F 180'C) orabove,4. Drive the vehicle at 55 mph(88 km/h) constantly for moretnan one mrnute.5. Recheck for code P0740 (40).
Does the OBD ll scan tool indicatecode PO74O or doesthe El indicator light indicate code 40?The svstem is OK ai this time.
Replace the Linear Sol€noidA$embly and Recheck:'1. Beplace the linear solenoidassembly {see page 14-138).2. Turn the ignition switch OFFand reset the PCM memory byremoving the BACK UP (7.5 A)fuse in the underhood fuse/relay box for more than 10seconds.3. Using the scan tool, check tobe sure that the engine coolanttemperature is 176"F (80'C) orabove.4. Drive the vehicle at 55 mph (88
km/h) constantly for more thanone minute,5. Recheck for code P0740 {40).
Does the OBD ll scan toolindicate code P0740 or doesthe E indicator light indicate code 40?
The svsteo is OK at this tim€.
Replace the transmission andtorque convertor assembly.
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Electrical Troubleshooting ('98 - 00 Modelsl
Troubleshooting Flowchart - Mainshaft Speed Sensor
Porsible Cruse
. Disconnsct€d msinsh.ft 3pood 3gnlor conncctol. Short or open in mainshaft 3poed sensor wire. Faultv mainshrtt speed sonsot
NOTE: Codo P0715 (15) on the PCM doesn't always moan there's an electricalproblem in the mainshaft or countershaft speed sensor circuit; code P07'15 (15)may also indicate a mechanical problem in the transmission. Any problem caus-ing irregular countershaft to mainshaft spoed difference can cause this codo; thiscan sometimes be seen in A'/T Free2e Data. Freeze Data can also indicate an elec-trical problem in the sensor circuits ;f one of the sensors reads 0 mph during atest dnve.
MAINSHAFT SPEEDSENSOR CONNECTOR
Terminal side of male terminals
. OBD ll Scan Tool indicat$ Codem715.. S€lf-diagnosi3 E or @ indica-tor light indicatos Code 15.
lf the PGM Tester is available,retrieve the A/f Freeze Data, thenclear the PCM.
Test-drive the vehicle under thesame conditions the Freere Data
Intermittont tailuro. Tha sy3temb OK at this tims. Check thefit oftho pins in .ll connoctoB alt6ctedbv this code.
Did the code return?
Check the mainshaft and counter-shaft speed sensors installation,and check them for damage.
Are the mainshaft and counter-shaft speed sensors installedproperly, and not damaged?Reinstall or ropllce and rochock.
Moasure Mainshatt Spe€d SenrorR€sirtanco at ths S€nsol Connoc-tor:1. Disconnect the 2P connectorfrom the mainshaft speed sensor.2. Measure mainshatt speed sen-sor resrstance at the sensorconnefior.
ls the resistance 400 600 0?
To page 14-115
14-114
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Mai nshaft /Cou ntershaft
Linear Solenoid AssemblySpeed Sensors
Replacement
'1. Remove the mounting bolts and the linear solenoid
assemblY.
Clean the mounting surfaceand fluid passages.
6x1.0mm12 N.m (1.2 kg{.m.8.7 tbtftl
@
@
GASKET
Clean the mounting surface and fluid passage of the
linear solenoid assembly and transmission housing.
Install a new linear solenoid assemblv with a new
gasket. Do not pinch the gasket during installation,
and make sure it is installed properly in the mount-
ing groove of the linear solenoid.
Check the linear solenoid connector for rust. dirt, or
oil, then connect it securelv.
14-138
Replacement
1. Remove the 6 mm bolt and the countershaft sDeed
sensor from the end cover.
\
5x1.0mm12 N.m 11.2 kgf.m, COUNTERSHAFT8.7 rbf.frl SPEED SENSOR
O.RINGReplace.
12 N'm 11.2 kgl.m,8.7 tbf.ftl
Remove the 6 mm bolt and the mainshaft speed
sensor from the transmission housing.
Replace the O-ring with a new one before installing
the countershaft speed sensor or the mainshaft speed
sensor,
6x1.0mm
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