VT 5.0L AUTO ABS LIGHT

[V8ratrod]

Hi all got my 98 vt with my abs light staying
on all the time an just need to know what tool /software
I need to reset it/clear it or rectify the fault
as the brakes work fine thx

[Tazzi]

Hi all got my 98 vt with my abs light staying
on all the time an just need to know what tool /software
I need to reset it/clear it or rectify the fault
as the brakes work fine thx

ABS only pops up when there is a fault to be fixed. It disappears immediately after the fault has been repair. I had air in the lines which set the ABS light warning off, once the air was removed, ABS fault disappeared.

Attempting to clear the fault will not help *normally*. There should be a "current" fault set that will need repairing.

Also, there is no software available currently to do any ABS diagnostics on a VT.

The fault is probably not stored on an eeprom, so you could try unhook the battery for 15min, and put back on, it might clear the fault. But again, if there is a problem, the abs will return immediately.

[yoda69]

Bridge pins 5 and 12 in the diagnostic connector under the dash and turn the ignition switch to ON, this will flash up any logged ABS error codes on the ABS dashlight, very similar to flashing up the diagnostic ECU codes on the check engine light using pins 5&6.
If you get code 12 all good, otherwise fault code should help you identify and fix the problem.
Below should help
http://forums.justcommodores.com.au/vt- ... ls1-2.html

[Tazzi]

Bridge pins 5 and 12 in the diagnostic connector under the dash and turn the ignition switch to ON, this will flash up any logged ABS error codes on the ABS dashlight, very similar to flashing up the diagnostic ECU codes on the check engine light using pins 5&6.
If you get code 12 all good, otherwise fault code should help you identify and fix the problem.
Below should help
http://forums.justcommodores.com.au/vt- ... ls1-2.html

Learn something new everyday!

[Charlescrown]

VT Commodores can develop a problem with the ABS module. If you can't get codes out try the engine codes. If nothing it's the ABS module. When it fails it pulls the whole system down and you cant read engine, transmission or ABS.

[yoda69]

That's why I new about the above.
My VT had a faulty ABS when I first got it, took me a while to work it out at the time.

[Charlescrown]

Yea. If you can't read any codes at all disconnect the ABS module and if you can now read engine/transmission bingo you found it. Faulty ABS module. However I have also seen the sensor cables breaking but not that common.

[V8ratrod]

Hi there sorry for late reply I could not get abs light to flash codes
On pin 5&12 as told so tried 5&6 an engine light flashed code 12
so all good there an retried pin 5&12 again with no luck as abs light
stays on so does this mean my abs modulator is stuffed thx Jason

[Charlescrown]

The ABS light is earthed out through the module. I would disconnect the module wiring plug and if the light stays on you have a wiring to earth problem but if the light goes out my guess is the module is at fault if it won't flash any codes. Have you tried the ABS? It should not be working if there is a fault. It will skid when braking hard not hammering your brake pedal.

[V8ratrod]

Hi there yes my abs is working fine under hard braking as in no skids
an I disconnected the abs module but my light still stays on with out
flashing any codes any ideas where to start looking thx for all ur help
so far regards Jason