Troubleshooting my power windows

**miked** · April 19th, 2015 08:09 PM

sasakyan ay 99 isuzu crew cab pickup (fuego)

concentrate na lang muna ako sa front windows (driver's & passenger side).

25 A fuse is ok.
Power window relay is bad pero napalitan ko na.

wiring is good on the switch harness side. battery voltage is applied, good ground, continuous circuit on the power window wiring.

driver's side motor reads 120 ohms. applied batt voltage directly to it, no response. so motor is bad.
passenger side motor reads almost zero ohms. with batt voltage applied, window moves on up and down. so passenger side motor is good.

problema ay ayaw gumalaw (as in walang response ti konti man lang) na kung yung mga switches sa may master/driver's side at passenger side (ganun din sa likod) ang ginamit. checked the ground, ok naman.

sinubukan ko tignan ang laman loob ng switch, aba e kumplikado din pala. may IC, capacitor, resistor, atbp.

any help please! DIY ako ngayon. ayoko magpunta muna sa mga "Banawe power windows" dito sa probinsya dahil malamang papalitan nila ang buong wiring neto which is tingin ko mahusay pa.

**rodetor** · April 19th, 2015 08:55 PM

You have a good way pattern of diagnosing it.

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**rodetor** · April 19th, 2015 08:58 PM

Try posting pic of the circuit board. Kung pwede ay mas malinaw malapit makita.

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**vvti2.0** · April 19th, 2015 09:13 PM

may auto up/down ba yan?

Anyway check mo yung window lock switch, baka activated.

**miked** · April 19th, 2015 09:57 PM

Originally Posted by vvti2.0

may auto up/down ba yan?

Anyway check mo yung window lock switch, baka activated.

may nakasulat na auto sa switch ng driver's side window. the rest wala. so meron, tama ba?

regarding window lock switch, sinubukan ko rin. wala pa rin response sa bawat window kahit nakaunlock na.

i suspect ok pa switch kahit na bopols ako sa electronics nun.

kasi imposible naman sabay sabay bumigay.

mapapatawad ko na yung motor ng driver side e busted na dahil most of the time yun ang nagagamit.

recheck ko uli bukas. baka may nakaligtaan ako sa wiring checks ko.

judging sa condition ng panel cover ng doors e may nagkutingting na pero hindi naman naabuso ang wiring.

kabibili ko lang kase netong kabayo kong eto.

**miked** · April 21st, 2015 10:54 PM

update:

rechecked all wiring harnesses. tugma lahat ng readings ko sa sinasabi ng troubleshooting manual.

tapos biglang gumana na passenger side window. i don't know exactly kung pano nangyari. bukod sa ginawa kong wiring check (voltage & continuity) e niretorque ko yung bolt ng body ground sa may right kick panel (passenger).

after the passenger front window, dumako nako sa rear right window. wiring checks fine (voltage & continuity). checked the motor continuity, zero ohms so therefore ok. further checked it by applying battery voltage to it, aba bumaba si bintana. nireverse ko polarity, lecheng motor ayaw umakyat. kinabahan ako dahil open parking tong location at the moment. nung nilubriicate ko sliding parts like the plastic pulleys, cables, guide, weatherstrip tapos pinukpok yung motor body e umakyat na ng walang kahirap hirap.

kaso kapag gamit na yung switch e ayaw. rechecked the contacts, mukhang ok.

regarding sa master switch (driver's), e parang may kumaskas na dati dun sa contacts ng circuit board.

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update:

rechecked all wiring harnesses. tugma lahat ng readings ko sa sinasabi ng troubleshooting manual.

tapos biglang gumana na passenger side window. i don't know exactly kung pano nangyari. bukod sa ginawa kong wiring check (voltage & continuity) e niretorque ko yung bolt ng body ground sa may right kick panel (passenger).

after the passenger front window, dumako nako sa rear right window. wiring checks fine (voltage & continuity). checked the motor continuity, zero ohms so therefore ok. further checked it by applying battery voltage to it, aba bumaba si bintana. nireverse ko polarity, lecheng motor ayaw umakyat. kinabahan ako dahil open parking tong location at the moment. nung nilubriicate ko sliding parts like the plastic pulleys, cables, guide, weatherstrip tapos pinukpok yung motor body e umakyat na ng walang kahirap hirap.

kaso kapag gamit na yung switch e ayaw. rechecked the contacts, mukhang ok.

regarding sa master switch (driver's), e parang may kumaskas na dati dun sa contacts ng circuit board.

**miked** · April 21st, 2015 11:57 PM

if all else fails, meron kaya nabibiling mechanical switch. i mean e yung simpleng switch na wala nang IC, diodes, resistors, capacitors , etc.?????

**rodetor** · April 22nd, 2015 01:36 AM

Uhmm... Toggle switch?

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**miked** · April 22nd, 2015 12:02 PM

Originally Posted by rodetor

Uhmm... Toggle switch?

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uy wag naman yun. i mean e ganun pa rin yung hitsura pero wala nang complex electronics underneath.

yung mga napapanood ko kasi sa you tube (kaso mga foreign cars nga lang), e simpleng copper boards, contacts lang.

wala pako time this week para dumako sa mga surplusan e.

**dr. d** · April 22nd, 2015 01:00 PM

spray some contact cleaner liberally into the switch itself, and hope the dirt and rust melt away.
someone also said, he would immerse the switch in question in wd40(?) ..

kung ayaw pa, ay maghanap-hanap ka na ng replacement switch..

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spray some contact cleaner liberally into the switch itself, and hope the dirt and rust melt away.
someone also said, he would immerse the switch in question in wd40(?) ..

kung ayaw pa, ay maghanap-hanap ka na ng replacement switch..