"check transmission" LED on 4jg2 trooper bighorn

**t2erns** · August 8th, 2007 06:13 PM

actually i'm not familiar with your trans but i'm explaining some basic principles of a/t trans. if your trans is electronic you most probably need a scanner for it, since it's an isuzu maybe you can go to isuzu dealers and inquire if they can scan the trans or gm might able to scan it (tech 1 or tech2 scanner), gm used to carry the isuzu imports.

**nap123** · August 8th, 2007 06:37 PM

Originally Posted by attic_dude

sorry for the very late reply, i kinda gave up na sa trooper namin

until i saw this reply. i didn't know na may input and output sensors pala. i also noticed na you mentioned new A/Ts ours is old na 1996, i dunno if this solution will apply in our case. im still wondering how to fix this problem. i'm really losing hope, ilan years na ganito yung sasakyan namin.

Bro, sa tingin ko TPS ang problem or wag sana ECM na ng bighorn please check this link. http://tsikot.yehey.com/forums/showthread.php?t=40136

**4JGtootsie** · August 8th, 2007 07:36 PM

Tama si Nap use that thread for reference.
Tama rin si T2ern.
Since you are told to check transmission concentrate on the transmission.
Since speedometer ay kasama sa nagloloko.
Check the VSSensor which is located on the top of the transmission(4L30-E).
Read the thread of LTX he did a good check on the voltage and circuitry.

**t2erns** · August 8th, 2007 08:32 PM

right sir 4jgtootsie his trans is a gm 4L30E (hydramatic trans by gm) na check ko rin sa trans reference ko. faulty tps will cause erratic shift, faulty vss will result in odo malfunction and shift, yung blinking ng od can be caused ng trans overheating (dis-abling the 4th gear). common problems ng hydramatic ay yung mga shift solenoids. gm trans control modules is ussually at the pcm din (ecu). so your best bet is to have your trans scanned. i have a gm tech1 scanner but i'm not sure kung ma access ang trans mo. since it's 96 model maybe it's already obd2 (if it has a 16-pin DLC sa lower part ng dash beside the steering column).

**nap123** · August 9th, 2007 12:40 PM

Originally Posted by t2erns

right sir 4jgtootsie his trans is a gm 4L30E (hydramatic trans by gm) na check ko rin sa trans reference ko. faulty tps will cause erratic shift, faulty vss will result in odo malfunction and shift, yung blinking ng od can be caused ng trans overheating (dis-abling the 4th gear). common problems ng hydramatic ay yung mga shift solenoids. gm trans control modules is ussually at the pcm din (ecu). so your best bet is to have your trans scanned. i have a gm tech1 scanner but i'm not sure kung ma access ang trans mo. since it's 96 model maybe it's already obd2 (if it has a 16-pin DLC sa lower part ng dash beside the steering column).

Yung fuel ba niya GAS? Kasi 4L30E ang transmission nya. Yung bighorn ko kasi AW30-40LE and model.

**t2erns** · August 9th, 2007 02:54 PM

i guess his engine is a 3.1L turbo diesel

**ltx** · August 9th, 2007 09:26 PM

Hello Sir,

4jg2 trooper din sir yung sasakyan ko.

problem related to autoshifting was encountered last month sa isuzu ko... Buti na lang at madaming mababait dito sa forum na libreng tumulong sakin.

possible nga Sir na TPS problem kagaya ng nasabi ni Sir Nap.

just to add.... try mo din i check yung sump filter [ located sa loob ng a/t trans], baka madumi na. drain mo yung ATF, removed oil pan, removed sump filter [makikita mo yung maliit/medyo manipis na metal casing sa loob nya ay very fine na wire mesh.

kailangn mo tungkabin yung gilid ng sump filter using flat screw driver para matangal at malinis yung wire mesh]...

kung hindi mo type ang D.I.Y. ay magagawa yan ng mekaniko para sayo.

**4JGtootsie** · August 9th, 2007 10:36 PM

Originally Posted by nap123

Yung fuel ba niya GAS? Kasi 4L30E ang transmission nya. Yung bighorn ko kasi AW30-40LE and model.

Nap,

I think the last 4JG2s use the 4L30 with TCS. The AR-5 can be used for the 6VD1 and 4JX1 A/Ts. The MUA 5s is for 4JG2 and MUA 5c for 4JX1 and 6VD1 M/Ts. My basis is the availability of 4x2 and 4x4 models and descrepencies on gear ratios. In short Hula.

Baka rin pina iksi lang nila from AW30-40LE to 40LE-AW30 to 4L30E. Parang algebra transposition at cancelation.

**nic** · August 18th, 2010 03:56 PM

Originally Posted by attic_dude

update lang guys, finally got the speedometer problem fixed. looks like it was the speed sensor nga, got one bnew for P2,200.00. haaay, now everything's back to normal na.

Reviving this thread.

Experienced the same problem today- flashing CHECK TRANS & SPEEDOMETER STOPPED WORKING. Other than that, truck seems to be running fine.

Hindi ma-diagnose ng mechanic ko yung problem (kasi computer & automatic mahirap daw), but based on this thread mukhang speed sensor kailangan ko palitan.

Several questions lang po:

1. Saan location ng speed sensor? Pag maturo ko sa mechanic, kami nalang magpapalit.

2. Sa pag-canvass ko may 2 klase daw: 1. may wire 2. walang wire. Ano dun ang sa 96 Bighorn 4JG2 A/T?

3. Sa presyo- may Korean made na 2200+ (Jetco).
- original 5200+ (Jayson's)
- original 7900+ (Casa)
Ok ba yung Korean made? I'm assuming yun ang nabili ni attic-dude. O pag ganyang pyesa dapat ba original?

Salamat at sorry sa maraming tanong.

**robyhenson** · September 2nd, 2010 12:21 PM

Nag bblink din yung akin, sabi ng casa sa sensor daw pero wala pa silang stock so oorderin pa. Hindi ko muna inorder.
After a few days nag drive ako sa nlex, hirap na hirap yung makina pag dating sa 80 papuntang 100 km/hr, para bang naka overdrive lang lagi, tnry kong patayin at buksan yung overdrive (yung maliit na button sa kambyo), parang walang pag babago sa takbo. Nag init ulo ko kasi mukang mali yung diagnosis nila. Tama ba na ung "sensor" na sinasabi nila yung problema? And it will fix the shifting problem?