I HEATER AND AIR CONDITIONER 1 5 HI BLOWER DIAGNOSIS Air Conditioning With Roar Window Defogger HI BLOWER MALFUNCTION OR BLOWER I SPEED TOO LOW WITH DEFOGGER ON All Other Spud Okay I I 1 Engine at operating temperalu re I Ignition in RUN position engine oil 2 Selector lever in VENT position blower l speed switch lp rll position 3 Move rear window delogger switcn Iroln I OFF to GN then hack to OFF and llsten tor changes in blower speed I BLOWER STAVS ON HIGH DEFOGGER OFF BLOWER HI SPEED NO HlGH BLOWER DEFOGGER OFF HIGH BLOWER SPEED I DEFUGGER ON BLOWER M2 SPEED EITHER POSITION DEFOGGER ON LO BLOWER SPEED I I Rear delogger switch Ch I in on position wolzwll orslmlull 30 2 Connect 12 volt test l H e Meet L 9 I light to ground erm lp Junction l l cl I I wnlla wire rsrmllul nt 2 II 5I j l l bl to t I I y pus grey pgs www s Connect 12 wen esl light I to ground and to black I I I wire terminal at high LIGIII 0 cwrpeer I 12 volt lest mule anu l r 1 W re y I N LIGHT OFF llpnl ep rlaeuwepge repair srwn I stripe wire lernllnal at clrcu it to ground I HI blower l y in placuprappr LIGHT DFF LIGHT DH I Check HI blower Locate and repair Hifi cutout relay ground open circuit in I I I I OKI IEIIIECE IEIEYI WIIIIE WIN III Llcrlr on LIGHT orr blower relay Elzgesimt IE rg Il eoaI I blower culuut relay Pe I I0 mggggr Wm relay wire HI blower cumut I may 1 Rear perrgper switch Locate app repair relayw reslsvvn I in OFF position bpen circuit in black I 2 Touch lest light tn orange stripe wire in orange wire terminal line luse to H1 blower I at lll blower cutout relay relay II me l i5 I amy EVEIIIIQII I LIGHTOFF LIGHT ON mtu Q Touch test light to Touch lest light to HEI Il MWHVM B l I IW III terminal IIIIIE ww WIIIII e e l l at blower speed Switch at HI blower wlpue relay BM I x onolmn LIGHT OF LIGHT ON LIGHT OFF LlGHT ON 1 Ale covllvlrunulucwnvl nw wmoow oerooonl I lc wl le nl Replace blower Locate and Replace HI 1 Visually inspect speed switch repair open blower cutout white wire trom circuit in relay HI blower cutout orange wire relay to HI blower blower speed relay lor open circuit switch to HI and good connections I blower cutout 2 ltwire OK check HI relay blower relay grou nd 3 Ifgrounlt OK replace HI blower relay Fig 1 5 Hi Blower Diagnosis A C With Rear Window Defogger I l I