Page 1049 of 1413
From page 21-11
Turn the ignition switch OFF.
Remove the heater control pan6l(see page 21-25).
Turn the ignition switch ON (lll.
Measure the voltage b€twsen the8LU/BLK wire terminal l+) andbody ground {- ).
Rgp.lr op.n In lh. BLU/BLK wh.batwoen lh! blowar motor lndtho hcolar f.n .wltch.ls there battory voltage?
Turn the ignition switch OFF.
Check tor continuity in lhe BLKwire between the heater lanswitch and body ground.
Ch.ck tor an opan in lhr Bl-K wirobdtwaan tho hortar tln lwftch.nd body ground. lf tho wlra l.OK, ch.ck for poor ground .tG201 .nd /rO1.
Roplaco tho hsator tan lwitch.
Troubleshooting
Blower Motor (cont'dl
View trom wire side
BLU/BLK{ + }
21-12
Page 1050 of 1413
From page 21-11
Tu.n the ignition switch ON (ll).
Measure tho voltage botwoon thoNo. 4 torminal (+) 6nd bodvground (- l.
Ropair opan in tho BLK/YEL wir.batworn lha undor-hood fuaa/ra-hy box snd tho undor-dr.htur./rolay box.
ls there battery voltage?
Turn the ignirion switch OFF.
Check for continuity between theNo. 2 torminal and body ground.
Ch.d( to. !n oF|rn in th6 BLK wirobatwagn lho undar-hood luro/ra-lry box lnd body ground. ll th.wlre it OK. chock tor poo. groundat G2Ol lnd G/lol.
Rop.ir opon in th. BLU/WHT wlr.betweon tho undsr-hood lura/l.-lay box and tho blowor motoi.
Page 1052 of 1413

From page 21-14
NO
To psg6 2'l - 16
Check for continuity in the BLKwire betweon the mode controlmotor and body ground.
Chock lor an op6n In tho BLK wtbotwo€n tho modo control mototlnd body ground. It thr wlro i!OK, chock for poo. grouhd otG2O1 8nd G/tOl.
Test the modo control motor (seepage 21-281.
Romovo the mode control motor(soo pag6 21-281.ls the mode control motor OKI
Remove the heater control oanel{soe page 21-25).Ch€ck the modo control linkagoand doo.s tor smooth movoment.
Disconnect the heater controlDanel 14P connector.Do tho mode control linkageand doorc movs smoothlv?Ropair th6 mod6 controllinkago or doors.
Ch€ck each wire for continuity bo-twoon the mod6 control motorand body ground.. YEL/BLU wire. Y€L wire. 8LU,^/VHT wire. GRNI/EL wire. YEL/RED wire
Raplace thc modo control moto..
Roprir any .hort in th. wlrol!) b.-tworn tha moda control anototand tha holtar control pan6l.
Check the same wires lor vohage.
Roplir rho.t to powar In tha8LK^'EL wiro b.two.h lh. modoconlrol hotor rnd tha haat* con-trol p!rr.|. (Thi! damrg.. thahello. control p!nel.)
ls the.6 any voltage?
View lrom wi.e side
GRl{/YEL
lconl'dl
21-15
Page 1054 of 1413
Recirculation Control Motor
ffi
Rocirculation control doo. dooanot chsng€ botwoon FRESH 6ndRECIRCULATE.
Disconnect the rgcirculation con-trol motor 4P connector.
Turn the ignilion switch ON l).
Measure the voltage between theBLK^/EL wire rerminal {+) andbody ground (- ).
Reprir op.n In th. BIK/YEL wir.botwoon thr und.r+rh fu!./r.-by box 6nd lha radrculdion co.r-trol motoi.
ls there battery voltage?
Turn the ignition switch OFF.
To page 21-18
{cont'd)
21-r 7
Page 1055 of 1413

Troubleshooting
Recirculation Control Motor (cont'd)
Test the recirculation control mo_
tor (see page 21-29).
Remove the recirculation control
motor (see pag. 21-291.ls the recirculation controlmotor OK?
Check the recirculation controllinkage and door for smoothmovement.
Remove the heater control pan€l
{see page 21-25).Do the recirculationcontrol linkage and doormove smoothly?
Ropalr tho ioclrculatiooconirol linkaga ot dool.
Disconnect the heater controlpanel 14P connector.
Check for continuity in the
GRNMHT and GRN/RED wires
between the recirculation controlmotor 6nd body ground.
RoDair shorl in rhs GRNMHT
and/or GRN/RED witols) botwoenthe rocirculation conl.ol motot
and tho hoster control Panol.
Check the same wircs for voltage.
Ropair 3hon lo Power in thoBLK/YEL wiro botwoon ths rocit-
culalion control motoi and lheho6tor control Panel' {Thirddmagos tho h€atot cont.ol
oanol.)
ls there any voltage?
Check for contin!ity in the
GRN/WHT and GRN/RED wires
between the recirculation controlmotor and the heater controlpanel.
Ropair opsn in the GRi|/WHTand/o. GRN/RED wiro{sl botwoonths rocirculstion conttol mototand tho hoator control Panol.
Reolace th€ heatsr control Panal.
From page 21- l7
No. 5 GRN/RED
o. 6 GRI{MHT
View from wire side
View from wire sid6
GRN/RED
ffii
21-18
Page 1076 of 1413
Troubleshooting
Radiator Fan
Redi.to. fan doo3 not run at all.
check rhe No. 33 {20 A) fuse inthe under-hood luse/relay box.
Remove the radiator lan r€layfrom the under-hood Iuse/relaybox and test it (see page 22-19).
Raplaca tha radiator tln rahy.
Measure the voltage between theNo. 3 terminal (+) and bodyground {-}.
ls therg battery voltag€?
Connect the No. 1 and No. 3 ter-minals with a jumper wire.
Does the radiator Ian run?
Chock for continuity in the BLK./RED wire between the No. 1 ter-minal and the radiator fan.
R.p.ir opdr in th. 8LK/RED wir.batwaon th. unda.-hood fut./ralay box rnd tha radirtor f.n.
Check for continuity in th€ BLKwire between the radiator {anand body ground.
Ch.ck to..n op.n in th. BLKwirc batwaan th. rldirtor hnlnd body ground, lf tha wita i!OK, chack tor poor gtound rtG2ol lnd GiOl.
Rephco tho radi.tor frn motor.
To p3ge 22-9
22-A
Page 1078 of 1413
Troubleshooting
Condenser Fan
BLU/YEL
View lrom wire side
Remove the condenser fan relay
and test it (see page 22-19).
Replaco the condan3ar frn rclay.
Measure the voltag€ betwe€n the
WHT wire terminal (+) and bodyground (-).
Replir opcn in tho WHT wiro bo-
twoen tha undor-hood fura/Jolay
box rnd tha condonr.rlan rclay.
Connoct the WHT and BLU/BLK
wire terminals with a jumPer
Does the condenser fan run?
Check for continuity in the BLU/
BLK wire between the condenser
Ian relay and the condenser fan
Reprir op€n in th. BLU/BLK wiro
batwcen the condenrai lan rolay
and the condcntor ftn
Check for continuity in the BLK
wire between the condenser fan
and body ground.
Check fot.n op.n in tho BLK
wire botween the condental trn
and bodv g.ound. It the wiro i3
OK, chock lor Poo. ground rt
G151.
Raplaco the condon36r fan motor.
BLK/WHT l+l
10 page 22-11
View from wire side
BLU/BLK
22-10
Page 1079 of 1413
From page 22-10
Disconnect the iumper wire andturn the ignition switch ON (ll).
Measure the voltage between theBLK/WHT wire terminal (+) andbody ground (-).
Reptir open in tha BLK/WHT o.BLK/YEL wire betwoon tho con-den3o. f.n rel.y and tho unde.-dash tus6/rel.y box.
Remove the iay'C diode from theAy'C diode 3P connector.
ls the A,/C diode OK?
Reprir op6n in th. BLU/YEL wirebetwocn tho conden3er tsn reltv.nd tho A/C diod€.
22-11