drive HONDA CR-V 1997 RD1-RD3 / 1.G Workshop Manual

Description
Power Flow (cont'dl
E position
1. Hydraulic pressure is switched by the manual valve to the servo valve, which movss the reverse shift fork to the
reverse position, The reverse shift fork engages with the reverse selector, the reverse selector hub, and the counter-
shaft reverse gear.
2. Hydraulic pressure is also applied to the 4th clutch. Power is transmitted from the mainshaft reverse gear via the
reverse idler gear to the countershaft reverse gear.
3. Rotational direction ofthe countershaft reverse gear ischanged viathe reverse idlergear.
4. Power is transmitted to the final drivegear,which drivesthefinal d riven gear a nd the transfer shaft drive gesr (4WD).
5. The transfer shaft drive gear drives the transfer shaft and the transfer driven gear shaft (4WD).
NOTE: The illustration shows the 4WD automatic.transmission; power flow of the 2wD automatic transmission is identical
to the 4WD except for parts related to the transfer assembly.
TOROUE CONVERTERMAINSHAFT REVERSE
COUNTERSHAFT
FINAL ORIVE
REVERSE IDLERGEAR
COUNTERSHAFTREVERSE GEAR
REVERSE SEITCTORHUBREVERSE SELECTOR
REVEBSC SHIFTFORK
FINAL OBIVEN GEAR
TRANSFER SHAFT DRIVE GEAR{4WD)
TRANSFER SHAFT {4WD)SERVO VAI-VE
14-14
TRANSFER DRIVEN GEAR SHAFT I4WD}
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Description
PCM
PGM.FIControl System
Throttle Position SensorSignelVehicle Speed SensorSignal
Engin€ Coolsnt TomperatureSen30r SignalService Ch€ck Connectol
A/T Control Svstem
INTERLOCK
Shift Control
Shift ConlrolSolenoid Valve ACONTROL UNITr
RShift ControlSolenoid Valve B
N
Linear SolenoidD
Lock-up Control
2
Lock-up ControlSolenoid valve A1
Lock-up ControlSolenoid Valve BOver-DriveSwitch Signal
Mainshaft Speed SensorSignalE Indicator Light
Countershaft SpeedSensor SigntlSelt-Oiagnosis SigndSelf-DiagnosisFunc{ion
O/D OFFIndicetor Light
Electronic Gontrol System (cont'd)
'99 - 00 Models
14-16
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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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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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Description
Lock-up System (cont'dl
Lock-up Clutch
L Ooeration (clutch on)
With the lock-up clutch on, the fluid in the chamber between the torque convener cover and the lock-uD oiston is drainedoff, and the converter fluid exerts pressure through the piston against the torque converter cover, As a result, the conven-er turbine is locked to the converter cover. This bipasses the converter, placing the vehicle in direct drive.
LOCK,UP PISTON
The power flows by way of:
Engine
+
Drive plate
Torque converter cover
I
Lock-up piston
t
Damper spring
{
Turbine
Mainshaft
IOROUECOVER
Operation (clutch off)
With the lock-up clutch off, the fluid flows in the reverse of "clutch on." As a result, the lock-up piston moves away fromthe converter cover, and the torque converter lock-up is released.
Engine
I
Drive plate
{
Torque converter cover
{
Pump
I
Turbine
{
Mainshaft
TOROUECOVER
To ATF cooler{(1\\n1INLET
t
Jtl
ort
MAIf{SHAFT
MAII{SHAFT
14-40
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PCM Terminal Voltage/Measuring Conditions
A/T Control System -'98 - 00 Models
The PCM terminal voltage and measuring conditions are shown for the connector terminals that are related to the A"/T con-
trol system. The other PCM terminal voltage and measuring conditions are described in section 11.
FCM Connector Terminal Localions
NOTE: 819 and C3 terminalsare applied to'99 - 00 models.
o (16Pt
T6rminal NumberSignalDescriptionMeasuring Conditions/Terminal Voltage
A5CRSDownshift signal input from
cruise control unit
When cruise control is used; Pulsing signal
A10scsTiming and adjustment service
check signal (5 V from PCM)
With ignition switch ON (ll) and service check
connector open:5 V
With ignition switch ON (ll) and service check
connector jumped with special tool: 0 V
A14('98 model)
D4 INDD4 indicator light control
{Voltage from PCM turns D4 light
oN)
When ignition switch is first turned ON (ll):
Battery voltage for two seconds
In E position: Battery voltage
A14
('99 - 00 models)
D INDD indicator light control(Voltage from PCM turns D light
oN)
When ignition switch is first turned ON (ll):
Baftery voltage for two seconds
ln E position: Battery voltage
428ILUInterlock control(Voltage from PCM)
When ignition switch ON {ll), brake pedal
depressed, and accelerator pedal released:
Battery voltage
A.32STOP SWBrake switch signal inputBrake pedal pressed; Battery voltage
Brake pedal released: 0 V
FCM CONNECTOR B I25P}
Terminal NumberSignalDescriptionMeasuring Conditions/Terminal Voltage
B1IGPlPower supply circuit from main
relay via under-hood Fuse 44
With ignition switch ON {ll): Battery voltage
With ignition switch OFF: 0 V
82PG1Ground (G101)
B8LSMLinear solenoid power supply
negative electrode
IG P2Power supply circuit from main
relay
With ignition switch ON (ll): Baftery voltage
With ignition switch OFF: 0 V
810PG2Ground (G101)
B17Linear solenoid power supply
positive electrode
With ignition switch ON (ll): Pulsing signal
819
('99 - 00 models)
O/D INDOver-Drive (O/D) OFF indicator
light control
When ignition switch is first turned ON (ll):
0 V for two seconds
O/D OFF indicator light ON:0 V
O/D OFF indicator light OFF: Battery voltage
s20Ground (G101)
B21VBUBack-up power supply(under-hood Fuse 47)
Always battery voltage
B22LG2Ground (G101)
14-54
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Terminal NumborSignalDescriptionMeasuring Conditions/Terminal Voltage
D1LCALock-up control solenoid valve A
control
During lock-up conditions: Baftery voltage
During no lock-up condition: 0 V
D2SHBShift control solenoid valve B
control
Battery voltage in following positions:
. E, E and positions
. E, -ql, and E positions in lst and 2nd gear
0 V in following positions:
. E, E;, and E positions in 3rd gear
. E and E positions in 4th gear
. E, El, and El positions
D3LCBLock-up control solenoid valve B
control
During full lock-up conditions: Battery voltage
During half lock-up conditions; Pulsing signal
D4Not used
D5VB SOLPower supply for solenoid valves
(Under-hood Fuse 15)
With ignition switch ON (ll); Battery voltage
With ignition switch OFF: 0 V
D6ATP RAy'T gear position switch
B position input
In E position: OV
In other than E position: Baftery voltage
D7SHAShift control solenoid valve A
control
Battery voltage in following positions:
. E position
. E, E, and E positions in 2nd and 3rd gear
. E position
0 V in following positions:
. E position. E. E, and E positions in lst gear
. Erl and E positions in 4th gear
.EandEpositions
D8
{'98 model}
ATP D3Ay'T gear position switch
E position input
In E position: 0V
In other than E position: Baftery voltage
D8
('99 - 00 models)
O/D SWOver-Drive (O/D) switch signal
input
When Over-Drive {O/D) is OFF (O/D OFF
indicator light is ON): 0 V
When Over-Drive {O/D) is ON {O/D OFF
indicator light is oFF): Battery voltage
D9ATP D4A/f gear position switch
E position input
In E position: 0V
In other than E position: 5 V
D10NCCountershaft sDeed sensor inoutDepending on vehicle speed: Pulsing signal
when vehicle is stopped: Approx.0 V
Dl1NMMainshaft speed sensor inputDepending on vehicle speed: Pulsing signal
When engine is stopped: Approx. 0 V
D12NMSGMainshaft speed sensor ground
D13ATP NPA,/T gear position switch E and
El positions input
InEandEpositions: 0V
In other than E and m position: 5 V
D14AlP 2A/T gear position switch
El position input
InE position; 0V
In other than E position: Battery voltage
D15ATP 1A,/T gear position switch
E position input
InEposition:0V
ln other than El position: Battery voltage
D16NCSGCountershaft speed sensor
grouno
PCM CONNECTOR D (16P)
14-55
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Troubleshooting Procedures
Checking ths Diagnostic Trouble Code (DTC)
with an O8D ll Scan tool or Honda PGM Tsster
When the PCM senses an abnormality in the input or output systems, the El ('97 - 98) or E ('99 - O0) indicator light in thegauge ass€mbly will blink. When the 16P Data Link Connector (DLC) {located under the dash on the passenger's side) is
connected to the OBD ll Scan Tool or Honda PGM Tester as shown, the scan tool or tester will indicate the Diagnostic
Trouble Code (DTC) when the ignition switch is turned ON(ll).
HONDA PGM TESTER olOBD II SCAN TOOL
lf the E or E indicator light or the MIL has been reported on, or if a driveability problem is suspected, follow this proce-
dure:
1. Connect the OBD ll Scan Tool (conforming to SAE J1978) or Honda PGM Tester to the 16P DLC. (See the OBD ll ScanTool or Honda PGM Tester user's manual for specific instructions. lf you are using the Honda PGM Tester, make sureit is set to the SAE DTC Wpe).2. Turn the ignition switch ON (ll), and observe the DTC on the screen
3. Record allfuel and emission DTCS, A,,/T DTCS, and freeze data.
4. lf there is a fuel and emissions DTC, first check the fuel and emissions system as indicated by the DTC (except for DTCP0700). DTC P0700 means there is one or more Ay'T DTC, and no Droblems were detected in the fuel and emissionscircuit of the PCM.
5. Wire down the radio station presets.
6. Reset the memory with the PGM Tester o. by removing the BACK UP fuse in the under-hood fuse/relay box for morethan 10 seconds.
7. Drive the vehicle for several minutes at speeds over 30 mph (50 km/hr), and then recheck for DTCS. lf the A/T DTCreturns, 9o to the Symptom-to Component Chart on pages 14-60 and 14-61 for the '97 models, and pages 14-62 and14-63 for '98 - 00 models. lf the OTC does not return, there was an intermittent problem within the circuit. Make sureall pins and terminals in the circuit are tight, and then go to step 8.8. Reset the radio Dreset stations, and set the clock.
DATA LINK CONNECTOR {16PI
[ -=.r,
ili,i /i,
v,., i
14-56
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PCM Reset Procedure
'1. Turn the ignition switch off
2. Remove the BACK UP fuse (7.5 A) from the under-hood fuse/relay box for 10 seconds to reset the PCM.
NOTE:
. Disconnecting the BACK Up fuse also cancels the radio preset stations and clock setting Make note of the radio
presets before removing the fuse so you can reset them
. The PCM memorv can also be cleared by using the OBD ll Scan Tool or Honda PGM Tester'
UNDER.HOODFUSE/RELAY BOX
Final Proceduro
This procedure must be done after any troubleshooting.
1. Turn the ignition switch OFF.
2. Reset the PCM.
3. Disconnect the OBD ll Scan Tool or Honda PGM Tester from the Data Link Connector (16P), or remove the special tool
from the Service Check Connector (2P).
4. Turn the ignition switch ON (ll), and set the radio presets and clock setting'
5, To verify that the problem is repaired. test-drive the vehicle for several minutes at speeds over 30 mph (48 km/h).
BACK UP IRADIO} {7.5 AI FUSE
14-59
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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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