2000 HONDA CR-V heater

Heater Unit
Overhaul
1. Remove the self-tapping screws and the heater corecover.
Pull out the grommet from the heater core pipes.
Remove the self-tapping screw and the pipe clamp.
HEATER CORE COVER
Pull out the heate. core. Be careful not to bend the
inlet and outlet pipes during heater core removal.
Reassemble the heater unit in the reverse order of
disassemblv.
HEATER CORE
22-52
www.emanualpro.com

Temperature Control
Adjustment
l. From under the hood, open the cable clamp, then
disconnect the heater valve cable from the heater
vatve arm.
From under the dash, disconnect the heater valve
cable housing from the cable clamp. and disconnect
the heater valve cable from the air mix contlol arm
Set the temperature control dial on MAX COOL with
the ignition switch ON (ll).
Attach the heater valve cable to the air mix control
arm as shown above. Hold the end of the heater
valve cable housing against the stop, then snap the
heater valve cable housing into the cable clamp.
HEATER VALVE ARM
HEATER VALVE CABLE
5. From under the hood. turn the heater valve arm to
the fullv closed position as shown, and hold it.
Attach the heater valve cable to the heater valve
arm, and gently pull on the heater valve cable hous-
ing to take up any slack, then install the heate. valve
cable housing into the cable clamp.
HEATER VALVE ARM
HEATER VALVE CABLE
22-53
www.emanualpro.com

Body Electrical
Speciaf Toofs ,...,..,.............-.23-2
Troubleshooting
Tips and Precautions ......,.,..........,.................. 23-3
Five-step Troubleshooting ........,.,.,...,,.,......... 23-5
Wire Color Codes ...,....,.. 23-5
Relay and Control Unit Locations
Engine Compartment ..,.,......,......................... 23-6
Dashboard ,.,.,..............-.- 23-7
Door ....................... .........23-10
Index to Cilcuits and Sysiems
Accessory Socket .. ,....,.,..,.,. 23-95*Airbags ................ .,....,. Sestion 24
Air Conditioning ,.,.,.... Section 22
Alternator ................... Section 4
Anti-lock Brake System {ABSI ................... Section 19'A/T Gear Position Indicator ....................... Section 1,1
Automatic Transmission System ...........,.. Section 14
Battery ................... ..............23-50
Blower Controls .,...,.,, Section 22
Charging System ....... Seqtion il
Clock -'98 Model ................ 23-98
Connector ldentification and Wire HarnessRouting .................. ......... 23.11
Cruise Control ............ Ssction 4
Dash Lights Brightness Contlo||er ..................... 23-90
Fan Conlrols ...,......,.... Section 10
Fuel Pump ,..,.,...,....,.... Section 11
Fuses...................... .,,.,.,.,.,,.,23-40*Gauges
Circuit Diagram ......-....-..23-58
Fuel Gauge .....,.,..... Section 11
Speedometer ..,..........,... 23-56
Ground Distribution ,....,.,...23-46
Hatch Glsss ODenor .........................,.,.,.,.,..,.,.,.,,. 23-121
Heater Controls .-........ Soction 21*Horns.,...,..,.,.,....... ................23"104*fgnition Switch ,,.,.,..,.,.,,.,.,.,23-51
lgnition Key Light System -'97 Mod6l .............. 23.88
-+
BODY
www.emanualpro.com

Relay and Gontrol Unit Locations
Dashboard (cont'd)
HEATER CONTROL PANEL
REAR WINDOW DEFOGGER RELAY
WINDOW RELAY
-rj,r1 /-\,r1Iu lJ-JlJ r*t
23-8
INTEGRATEO CONTROL UNITTURN SIGNAL/HAZARD RELAY
www.emanualpro.com

Gonnector ldentification and Wire Harness Routing
How to ldentity Connectors:
ldentification numbers have been assigned to all connectors, The number is preceded by the letter "C" for connectors.
"G" for ground terminals or "T" for non-ground terminals.
Location
HarnessEngine CompartmsntDashboardOthers lFloor, Door,
8oof, Tailgate)
Starter cableT1, T2 and @
Battery ground cableG1 and O
Engine ground cableT3
Transmission ground cableT4
G3
Engine wire harnessC101 through C137
T101 and T102
G101
Engine compartment ware harnessC201 through C218
G201 and G202
Under-hood ABS fuse/relay box
wire harness
t5ano9
Main wire harnessC301 through C309
C351 through C361
C401 through C447
G401 and G402
Dashboard wire harnessC501 through C524 (C525)
G501
Left side wire harnessC551 through C581
G551, G552 and G553
Right side wire harnessC601 through C605
lnterior wire harnessC701 through C703
Rear bumper wire harnessC641 through C643
Heater sub-harnessC731 through C740
Secondary heated oxygen sensor
sub-harness
C721 through C722
Combination switch sub-harnessC751 through C760
Driver's door wire harnessC661 through C667
Front passenger's door wire harnessC6Tl through C676
Left rear door wire harnessC681 through C684
Right rear door wire harnessC69'l through C694
Rear wire harnessC611 through C520
Tailgate wire harnessC631 through C634
G631
SRS main harnessC801 through C808
G801
High mount brake light sub-harnessC651 through C653
Fuel tank oressure sensor sub-harnessC645 through C647
www.emanualpro.com

Connector ldentification and Wire Harness Routing
Main Wire Harness {Right side of dash and floor branchesl {cont,dl
Connector or
Tsrminal
Number ol
CavitiesLocationConnects toNotes
c427
c428
c429
c430
c431
c432
c433
c434
c435
c436
c436
c447
6
26
22
7
20
5
7
25Front passenger's door
Behind right kick panel
Behind right kick panel
Behind right kick panel
Behind right kick panel
Under right side of dash
Under .ight side of dash
Under middle of dash
Under middle of dash
Under middle of dash
Under middle of dash
Behind right kick panel
Front passenger's door wire harness(c671)
Right side wire harness {C601)ABS control unit
ABS control unit
Engine wire harness (C127)
PGM-Fl main relay
JUnotron connector
Tailgate open relay
Headlights f lasher relay
Heater sub-harness (C731 )Heater sub-harness (C731)
ECM/PCM
ABS
ABS
Optional
Optional'97 model'98 - 00
models'98 - 00
mooets
G402Under right side of dashBody ground, via main wire harness
23-22
www.emanualpro.com

Connector ldentification and Wire Harness Routing
Dashboard Wire Harness
Connector ol
Terminal
Numb€r of
CavitiesLocationConngcts toNotes
c501
c501
c502
c503
c504
c505
c506
c507
c508
c509
c510
c511
c512
c514
c518
c519
c520
c521
c524
10
1
20
14
16
6
20
13
5
t6
14
10
to
20
16
2
24
2
1
5
Above under-dash fuse/relay box
Above under-dash fuse/relay box
Above under-dash fusehelay box
Above under-dash fuse/relay box
Behind dashboard lower panel
Above under-dash fuse/relay box
Above under-dash fuse/relay box
Left side of steering wheel
Left side of steering wheel
Under left side of dash
Behind gauges
Behind gauges
Behind gauges
Behind gauges
Behind gauges
Right side of gauges
Behind middle of dash
Behind middle of dash
Behind middle of dash
Under middle of dash
Under middle of dash
Behind middle of dash
Behind middle of dash
Behind middle of dash
Behind middle of dash
Behind middle of dash
Behind gauges
Upper middle of dash
Main wire harness (C416)
Main wire harness (C416)
Under-dash fuse/relay box 1C912)
Main wire harness (C415)
Hatch glass opener switch
Left side wire harness (C556)
Left side wire harness (C556)
Dash lights brightness cont.oller
Cruise main switch
Junction connector
Gauge assembly
Gauge assembly
Gauge assembly
Gauge assembly
Gauge assembly
Hazard warning switch
Audio unit
Heater control panel
Heater control panel
Data link connector
Service check connector
Front accessory socket connector
Ashtray light
Heater sub-harness (C733)
Heater sub-harness {C740}
Heater sub-harness (C740)
Gauge assembly
Clock
'97 - 98
models'99 - 00
models
Mir
A/r
'97 model'98 - 00
mooets
'98 - 00
models
G501Behind middle of dashBody ground, via dashboard wire har-
ness
23-24
www.emanualpro.com

Power Distribution
Fuse-to-Gomponent(sl Index (numerical sequence)
Under-hood Fuse/Rolay Box:
41
43
44
46
47
48
49
50
52
Capacity
'100 A
40A
7.5 A
15 A
40A
7.5 A
30A
204
204
15 A
10A
40A
40A
204
20A
Capacity
40A
204
7.5 A
wiro ColorFuseCircuit(s) Prot€cted
A
lgnition switch (BAT)
lntegrated control unit
Ceiling lights
Spotlights
PGM-Fl main relay
Not used
No. 7, 8, 10, 11 fuse in the under-dash fuse/relay box
Audio unit
Clock {'98 - 00 models)
Data link connector ('98 - 00 models)
ECM (VBU) {'98 - 00 models: M/T)
Heater control panel
PCM (VBU) (A./T)
Combination light switch (via under-dash fuse/relay box)
No. 20, 33 fuse in the under-dash fuss/relay box
Not used
Rear window defogger (via relay)
Door lock control unit
Hatch glass opener solenoid
Keyless door lock control unit ('98 - 00 models)
Horn relay
Horns (via relay)
via brake switch:
ABS control unit
Brake lights
Cruise control unit
ECM ('98 - 00 models: M/T)
High mount brake iight
PCM (4./T)
Trailer lighting connector
Turn signal/hazard relay (via switch)
Option connector (+B)
No. 6 fuse in the under-dash fuse/relay box
Blower motor (via relay)
Condenser fan motor (via relay)
Ay'C compressor clutch (via relay)
Radiator fan motor (via relay)
Wire Color Circuitls) Protoct
53
54
50
WHT/BLK
WHT/RED
WHT/BLK
WHT/BLU
WHT/BLU
WHT
WHT/GRN
WHT/GRN
WHT/GRN
WHT/BLK
WHT/RED
BLU/WHT
WHT
RED
BLK/RED
Under-hood ABS Fuss/nehy Box:
Fusg
61WHT
WHT/GRN
BRN/YEL
ABS pump motor {via relay}
ABS control unit
ABS control unit
{cont'd)
23-43
www.emanualpro.com