Relay wire HONDA CIVIC 1997 6.G Repair Manual

Troubleshooting -'99 - 00 Models
Heater Control Panel Input/Output Signals
HEATER CONTROL PANEL CONNECTORS
8P CONNECTOR2OP CONNECTOR12P CONNECTOR
Wire side of female terminals
8P CONNECTOR (O qn Circuit Diagram)
20P CONNECTOR {D on circuit Diagram}
*: with Ay'c
12P CONNECTOR (tr on Circuit Diagraml
CavityWire colorSignalCavilyWhe colorSignal
BLU/8LKBLOWER FEEDBACKINPUT5REDDASH LIGHTS BRIGHTNESSCONTROLLEROUTPUT
2GRN/lVHTFRESHINPUT6BLKGBOU N DOUTPUT
3GRN/REDRECIRCULATEINPUT7BLU/YELREAR WINDOW DEFOGGERRELAYOUTPUT
4RED/BLKCOMBINATION LIGHT SWITCH(Via No. 30 (7.5 A) fuse)INPUT88LfiELlG2 {Power)INPUT
CavityWire colorSignalCavityWire colorSignal
LTGRN/BLKPOWER TRANSISTOR EASEOUTPUT't1BLU/REDAy'C THERMOSTATINPUT
2BRNMHTMODE CONTROL MOTORGROUNDINPUT12BRNAIR MIX CONTROL MOTORGROU NDINPUT
3RE D/YELAIR MIX HOTOUTPUT13ORNAA/HTBLOWER MOTOR HIGHRELAYINPUT
RED,ryvHIAIR MIX COOLOUTPUT14
5YEUBLUMODE DEFINPUTPN K,/BLKAIR MIX POTENTIALOUTPUT
6YEUREDMODE VENTINPUT16
7GRNI/ELMODE HEAT/r'ENTINPUT11
IBLUAVHTMODE HEATINPUT18
9YELMODE HEAT/DEFINPUT19
10WHT/BLU+B (Power)INPUT20GRYAIR MIX POTENTIAL +5 VOUTPUT
CavityWilecolorSignalCavityWi.e cololSignal
lSWITCH LED COMMONOUTPUT1SWITCH LIGHTS +OUTPUT
2ISWITCH LIGHTS -INPUT
39SWITCH COMMONINPUT
4RECIRCULATION CONTROLSWITCH LEDINPUT10A,/C SWITCHOUTPUT
5A./C SWITCH LEDINPUT11RECIRCULATION CONTROLSWITCHOUTPUT
6REAR WINDOW DEFOGGERSWITCH LEDINPUT12REAR WINDOW DEFOGGEBSWITCHOUTPUT
21-36

Wiring/Gonnector Locations
A/C DIODE.CONDENSER FAN RELAY,COMPRESSOR CLUTCH RELAY(Located in the under,hood fuse/relay box)
COND€NSER FANCONNECTOR
COMPARTMENTWIRE HARNESS
CONNECTOR
22-4

Condenser Fan
CONDENSER FAN RELAY 4P SOCKET
JUMPERwlRE
(cont'd)
22-9
Conden3er fan does not run at all.
Check the No. 56 (20 A) fuse in the
unde.hood frJse/relaY box, and the
No. 17 (7.5 A) fuse in the under-
dash fuse/relay box.
Reolace the fuse{s), and techeck
Remove the condenser lan rclaY'
and test it (see page 22 21i
Replace the condensei fan relav.
Check the under-hood tus6/relaY
Measure the vohage between the
No. 2 terminalofthe condenser fan
relav 4P socket and bodv ground.
ls there battery voltage?
Check the condenser lan Powersupply circuit:Connect the No. 1 and No. 2 teF
minals of the condenser fan relay
4P socket with a jumper wire
Does the condenser fan run?To page 22-10
Io page 22 11

Troubleshooting
Condenser Fan (cont'd)
CONDENSER FAN RELAY 4P SOCKET
CONDENSEB FAN 2P CONNECTORWire side of female terminals
-=F_
l!.lI slx
@I
Check tor an opon in the wi.o:1. Disconnect the jumper wire.2. oisconnect the condenser tan2P connector.3. Check for continuity betweenthe No. 1 terminal of the con-denser fan relay 4P socket andthe No. 1 terminal of the con-denser fan 2P connector.
Rapair op6n in the wirs bgtwconthe condcnsor tan rclay and thecondgnlar fan.
ls there continuity?
Check to. en open in the wire:Check for continuity between theNo. 2 terminal ot the condenserfan 2P connector and bodyground.
Check Ior rn opon in th6 wirebctwoen the condcnser tan andbody ground, lf iho wirc ii OK,chcck for poor ground at G751.
ls there continuity?
Replaco the condense. fan motor.
22-10

Check the diode:1. Disconnect the iumPer wire
2. Remove the A/C diode from
the under hood fuse/relaY box
3. Check for current flow in both
directions between the A and
B terminals.
ls there current flow in onlY
one direction?
Chock for an open in the wire:
1. Turn the ignition switch ON(ll).
2. Measure the voltage between
the No. 2 terminal of the AJC
diode 2P socket and body
ground.
Repair opon in the wire betwe€n
the No. 17 luse and the A/c
diode.ls there battery voltage?
B()-=iFA
A/C DIOOE 2P SOCKET

Troubleshooting
Compressor
COMPRESSOR CLUTCH RELAY.P SOCKET
JUMPERWIRE
check the No. 56 (20 A) fuse in theunder'hood fuse/relay box, and theNo. 17 (7.5 A) fuse in the under,dash fuse/relay box.
Replace the fussls), and .echeck.
Remove the compressor clutchrelay, and test it {see page 22 21).
Check th6 und€r-hood tu3e/reby
Measure the voltage between theNo. 2 terminal of the compressorclutch relay 4P socket and bodyground.
Check the compressor clutchpow€r supply circuit:Connect the No. 1 and No. 2 termi-nals of the compressor clutch relay4P socket with a jumper wire.
Does the compressor clutch click?fo page 22-13
To page 22 14
22-12

Ftom page 22 12
Check to. an opon in tho wire:
1. Disconnect the jumper wire
2. Disconnect the comPressor
clutch 1P connector.
3. Check lor continuity between
the No. 1 terminal o{ the com_pressor clutch relaY 4P socket
and the terminal of the com-pressor clutch 1P connector'
Repeir open in the wiro between
the compressoa clutch relaY and
the comDres3or clulch.ls there continuity?
Inspect the comPre3sor clutch
clo.rance, lhe tharmal ProtgdorISANDENI, and tha compr6ssor
clutch field coil {SANDEN: Soepag. 22-33; DENSO: See Pag.22-10t.
COMPRESSOR CLUTCH RELAYiaP SOCKET
r--------t RED
L-r-]-_ll2l I--r- |l1l3l I
@
I
HI
1___J-RED
COMPRESSOR CLUTCH 1P CONNECTOR
Wire side of female terminals
(cont'd)
22-13

Troubleshooting
Compressor lcont'dl
COMPRESSOR CLUTCH RELAY4P SOCKET
l--;l
12 |---r--]l.l3 |L-J--J
] BLK/YEL
A(v)
!
ECM/PCM CONNECTOR A I32P}
Wire side of female terminats
*Howto use the backprobe setsConnect the backprobe adapters to the stackang patch cords, andconnect the cords to a multimeter. Using the wire insulation as aguide for the contoured tip of the backprobe adapter, gently slidethe tip into the connector from the wire side until it comes in con-tact with the terminalend ofthe wire (see section 11).
Frcm page 22-12
To page 22-15
Check Ior an open in the wire;1. Disconnecl the jumper wire.2. Turn the ignition swatch ON (ll).
3. l\4easure the voltage betweenthe No. 4 terminal of the com-pressor clutch relay 4P socketand body ground.
Repair open in the wire betw€enthe No. 17 fuso and the compres-sor clutch relav.
Check for an open in the wira:1. Turn the ignition switch OFF,then reinstall the compressorclutch relay.2. Make sure the A/C switch isOFF, then turn the ignitionswitch ON (ll).
3. Using a *Backprobe Set (T/N07SAZ 0010004), measurethe voltage between the No.17 terminal oI the ECM/PCMconnector A (32P) and bodyground with the ECM/PCMconnectors connected.
Repair open in the wirc betweonthe compressor clutch relay andthe ECM/PCtvt.
ls there battery voltage?

Frcm page 22-14
Check lor an open in the wire:1. Turn the ignition switch OFF.
2. Disconnect the A/C pressure
switch 2P connector.3. Turn th ignition switch ON lll).4. Measure the voltage between
the No. 1 terminal of the AJCpressure switch 2P conneclorand body ground.
Check the A/C pressure switch:1. Turn the ignition switch OFF.
2. Check for continuity between
the No. 1 and No. 2 terminalsof the Ay'C pressure switch.
ls there continuity?
Check for A/C system ptessure.
ls the pressure within sPeci_f cations?Repair the A/C pressure Problem
A/C PRESSURE SWITCH 2P CONNECTOR
ls there battery voltage?
wire side of {emale terminals
A/C PRESSURE SWITCH
Repair open in the wire between
the condenser fan relay tnd the
A/C oressure switch.
1o page 22-16
(cont'd)
22-15

A/C System
CONDENSER FAN RELAY 4P SOCKET
A/C system does not come on
{comDressor and fan).
Check the No. 56 fuse in theunder'hood fuse/relay box andthe No. 17 fuse in the under-dashfuse/relay box.
ReDlace the fus6{s}, and recheck.
Check for tn open in the wire:
1. Remove the condenser lanrelay from the u nderhood
luse/relay box.2. Turn the ignition switch ON {lli.3- Measure the voltage betweenthe No. 4 terminal of the condenser fan relav 4P socketand body ground.
Repair open in the wire between
the No. 17 fuse and the con-denser fan r6lay,
Check the under-hood fus€/r6laybox:Measure the voltage between the
No. 2 terminal of the condenser
fan relay 4P socket and bodyground,
YES
Io page 22-18
(cont'd)