1999 HONDA CR-V Ect switch

Cooling
f ffustrated Index ........... ..... 1O-2
Radiator
Rep|acement ...........,....,...................... 10-4
Engine Coolant Refilling and
Bleeding ..,.,................. 10-5
Cap Testing .................... 10-7
Testing ......10-7
Thermostat
Rep|acement ....................................... 10-8
Testing ...... 10-9
Water Pump
lllustrated lndex ....,..... .. 10-10
Inspection . 10-1 1
Replacement ....................................,.. 10-1 1
Fan Gontrol
Component Location Index ............... 10-12
Circuit Diagram ............. 10-13
Fan Motor Testing ......... 10-14
Radiator Fan Switch Testing ............. 10-14
Coolant Temperature Gauge
Gauge Testing ............... 10-15
Coolant temperature Sending
Unit Testing ........,....... 10-15
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Water Pump
lllustrated Index
ENGINE COOLANTTEMPERATURE IECTISENSOR18 N.m 11,8 kgt.m,13 tbt.ftl
COOLANTTEMPERATUREGAUGEUNIT
6x1.0mm9.8 N'm (1.0 kgf.m,7.2 tbt frl
9 N.m {0.3 kgf.m,7 tbf.fttApply liquid gasketto the threads.
WATER OUTLETCOVERApply liquid gasker part No.087'18 - 0001 or 08718 - 0003to the mating surface.
RADIATOR FAN SWITCH2il N.m (2.i1 kgl.m,17 tbfft)
WATER PUMPlnspection, page 10-11
O-RINGReplac€.
6xl,0mm12 N.tn n.2 lgl.rn,8.7 tbf'ft)
CONNECTINGPIPE
6x1.0mm12 N.m 11.2 kgf.m,8.7 tbtftl
10-10
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Fan Control
Fan Motor Testing
1. Disconnect the 2P connector.
Terminalside ofmale terminals
Test the motor by connecting battery power to theNo. 2 terminal and ground to the No. 1 terminal.
lf the motor fails to run or does not run smoothly,reptace rt.
RADIATOR FAN MOTOR
10-14
Radiator Fan Switch Testing
E@ Removing the radiator fan switch whilethe engine is hot can cause the coolant to spray out, seri-ously scalding you. Always let the enginc and radiatorcool down before removing the radiator fan switch.
1. Remove the radiator fan switch from the thermostathousing (see page 10 '10).
2. Suspend the radiator fan switch in a container ofwater as shown.
Heat the water, and check the temperature with athermometer. Do not let the thermometer touch thebottom of the hot container.
Measure the continuity between the A and B termi-nals according to the table.
Bleed the air from the cooling system after installingthe radiator fan switch (see page 10-5).
Terminal
op".*i- Tr"ip".a*" \.B
SWITCH
ON196 - 203"F
{91 - 95.C)o---o
OFF
5 - 14"F (3 - 8.C)
lower than the tem-peratu re wh en itgoes on
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Goolant Temperature Gauge
Gauge Testing
1. Check the No. 25 (7.5 A) fuse in the under-dash
fuse/relay box before testin9.
2. Make sure the ignition switch is OFF, then discon-
nect the YEL/GRN wire from the coolant tempera-
ture sending unit. and ground it with a jumper wire.
YEL/GRNWIRE
Turn the ignition switch ON {ll). Check that the
pointer of the coolant temperature gauge starts
moving toward the "H" mark. Turn the ignition
switch OFF before the pointer reaches "H" on the
gauge dial. Failure to do so may damage the gauge.
lf the pointer of the gauge does not move at all,
check for an open in the YEL/GRN wire.
lf the wires are OK, replace the coolant temperature
gauge.
lf the coolant temperature gauge works, test the
coolant temperature sending unit.
5.
COOLANT TEMPERATURE
Coolant Temperature Sending Unit
Testing
1. Disconnect the YEUGRN wire from the coolant tem
perature sending unit.
COOLANT TEMPERATURE
POSITIVETERMINAL
YEL/GRN WIRE(Covered withinsulation)
2. Using an ohmmeter, measure the change in resis-
tance between the positive terminal and the engine
(ground) with the engine cold and with the engine
at operating temPerature.
Temperature133.F (56'C)1A5 - 212F
(8s - 100'c)
Resistance(0)13746-30
3. lf the readings are substantially different from the
specitications above, inspect the coolant level and
the cooling system. lf the cooling system is OK,
replace the sending unit.
10-15
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Fuel and Emissions
Special Tools ...................... 11-2
Component Locations
lndex ...................... ....,.... 11-3
Svstem Description
Vacuum Connections ...........,....,.,................. 1 1-9
Electrical Connections ................................... 1 1-15
System Connectors .,.,,.,............................,.,. 1 1-36
Troubleshooting
Troubleshooting Procedures,.,..................... 11-60
Engine Control Module/Powertrain ConttolModule Terminal Arrangement .............., 11-67
Diagnostic Trouble Code Chart .................... 1 t-75
How to Read Flowcharts .......,.....,.,............... I 1-79
PGM-Fl System
System Description .................,.,.,,,............... 1 1-80
Troubleshooting Flowcharts
Engine Control Module/PowertrainControl Module ........11-52
Manifold Absolute Pressure Sensor ............. 11-90
Intake Air Temperature Sensor .................... 1 1-95
Engine Coolant Temperature Sensor .,..,.,.... 1 1-99
Throttle Position Sensor ...........,.....,.,.,..,...... I 1'103
Primary Heated Orygen Sensor (Sensor 1) ... 11-110
Secondary Heated Oxygen Sensor{Sensor 2l .................. 1 1-117
Heated Oxygen Sensor Heater ..................... 11-121
Fuef Supply System ......11-124
Random Misfire ,....,.,..... 11-126
Mistire Detected in One Cylinder .....-........... 11-128
Knock Sensor ................ 11-130
CKP/TDC/CYP Sensor .................................... 1 1-131
Vehicle Speed Sensor ...............................,.... 1 1-135
Barometric Pressure Sensor .....,...,...,.,,........ 1 1-137
Electrical Load Detector ...,.,.......................... 1 1-138
CKF Sensor ................,.,, '11-112
ECM/PCM lnternaf Circuit ............................. 11'117
HO2S Replacement .,.,.,. 11-148
ldle Control System
System Description ............ 11-149
Troubleshooting Flowcharts
ldle Control System ...... 11-150
fdle Air Control Valve ......................,............. 11-152
Air Conditioning Signal ................................. I 1-155
Alternator FR Signal ...................................... 1 1-159
Starter Switch Si9na1 .................................... t l-161
Power Steering Pressure Switch Signal ...... 11-162
Brake Switch Si9na1 ...................................... 11-166
Fast ldle Thermo Valve .,.,.............................,.,.,. 11-168
ldle speed setting .............. 11-169
Fuel Supply System
Fuel Lines ............................ 11-171
Fuef Tube/Ouick-Conneci Fittings ..................... 11 -175
System Description ............ 11-178
Fuel Pressurg ...................... 11-178
Fuel Iniectors ................,..... 11-179
Fuel Pressure Re9u1ator .............................,.,...., f 1-181
Fuef Fifter ....,.,.,.,,,,.,............11-142
Fuel Pump ........................... 11-183
Fuel Gauge .......................... 11-184
Fuel Gauge Sending Unit ................................... I 1-185
Low Fuel Indicator System ...........,.,..,............... 1 1-185
PGM-FI Main Relay ............. 11-187
Fue|Tank................ ............. 11-191
Intake Air System
System Description ............ 11-193
Air Cleanel ,.,.,..................... 11-194
Throttle Cable ..................... 11-194
Throttle Body........ .............. 11-196
Emission Control System
System D$cription ...,....,.,. 11-199
Tailpipe Emission ............... 11-199
Three Way Catalytic Converter ..................,.,...,, 11-199
Positive Crankcase Ventilation System .,.,,,,.,.., 11-2O1
Evaporative Emission Controls .........,.,.,............ 11-203
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System Description
Electrical Connections -'98 - 00 Models (cont,dl
OVE&ORVE OFF[{DtcatoR LlfP
C UqE AASEr|ELY
A/I GEAA PO3MON SWITCH
*tnzaeo' ) ,r*ear_oo,
11-32
@lillFo|. ur{tT
*1: Nf*4: '99 - 00 modets
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Troubleshooting
Troubleshooting Procedures
How To Begin Troubleshooting
When the Malfunction indicator Lamp (MlLl has been reported on, or there is a driveability problem, use the appropri-ate procedure below to diagnose and repair the problem.
A. When the MIL has come on:
1. Connect the Honda PGM Tester or an OBD Il scan tool to the 16P Data Link Connector (DLC) located behind theright side of the center console.
Turn the ignition switch ON (ll).
Check the DTC and note it. Also check and note
the freeze frame data.
Refer to the Diagnostic Trouble Code Chart and
begin troubleshooting.
NOTE:
. SeetheOBDll scan tool or Honda PGM Tester user's manuals for specific operating instructions.. The scan tool or tester can read the Diagnostic Trouble Codes (DTC), freeze frame data, current data, and otherEngine Control Module (ECM}/Powertrain Control Module (PCM) data.. Freeze frame data indicates the engine conditions when the first malfunction, misfire or fuel trim malfunction wasdetected. lt can be useful information when troubleshootino.
B. When the MIL has not come on, but there is a driveability problem, refer to the Symptom Chart on page 11-64.
C. DTCs will be indicated by the blinking of the Malfunction Indicator Lamp {MlL) with the SCS service connector con-nected.
Connect the SCS service connector to Service Check Connector as shown. {The 2P Service Check Connecror rslocated behind the right side of the center console.) Turn the ignition switch ON 0l).
DATA LINK CONNECTOR I16PI
1 1-60
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ll. Engine Controt Module (EcM)/Powertrain Control Module {PCM) Reset Procedure
Either of the following actions will reset the ECM/PCM.
. use the oBD ll scan tool or Honda PGM Tester to clear the ECM's/PCM's memory. (see the oBD ll scan tool or
Honda PGM Tester user's manuals for specific operating instructions )
. Turn the ignition switch oFF. Remove the BACK UP (RADIO) (7.5 A) fuse from the under-hood fuse/relay box for 10
seconos.
lll. Final Procedure {this procedure must be done after any troubleshooting)
1. Remove the SCS Service Connector if it is connected. lf the SCS service connector is connected. and there are no
DTCS stored in the ECM/PCM, the MIL will stay on when the ignition switch is turnsd oN (ll).
2. Do the ECM/PCM Reset Procedure.
3. Turn the ignition switch OFF
4. Disconnect the OBD ll scan tool orHonda PGM Tester from the Data Link Connector ( 16P)'
(cont'd)
1 1-61
BACK UP {RADIOI I7,5 AI FUSE
FUSE/RELAY BOX
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