Abs Light

[itshimdazza]

Hey guys what does it mean if the abs light is on solid while driving and any idease about fixing (where/cost etc)?

regards,

Darren

[eMsta]

i got that as well...its just the abs unit that might need replacing (its located on the passenger side, under the hood - near the front windscreen)

[lachlanw]

isnt there some way you can run diagnostics for it ? first thing check how much brake fluid is in the resivior ? check all the fuses and relay . clean / inspect all the wheel speed sensors

[paulr33]

its covered in the nissan service manual abs diag howto

it also covers basic diagnostics tips (even with consult) and what to check for

when was it working last (was it ever?)

i expect the main ABS unit which from memory could be part of the boot mounted computer

looks at wheel speed on each wheel, likely TPS and main vehicle speed i would assume

has anyone been hacking your loom? any inline hackers like SAFC? RSM? speed cutters etc?

these shouldnt affect it, but maybe someone has done a botched install and cut one of the ABS sensors

i would suggest

check wiring and main ABS control unit (under bonnet, left had passenger side at the front)

check all fuses and basic sensors from nissan consult (cable and software for sub $100 on the forums)

read the service manual for basic diagnostics

fialing that, goto nissan dealer and ask to fix but be prepared for $$$

if the light is on, your ABS is disabled

that is, if you are driving and lock up the brakes, ABS wont fire, and you will skid

when ABS is working the light is off, when you lock the brakes, the ABS unit fires a rapid pulse on the brake fluid line

this in turn allows the brake calipers to open/close rapidly, then is turn, removes the "skid" properties of the wheel and lets you gain control instead of lock and skid with no control