Boy I wish I hadn't disconnected the brake line!

A Q45 forum / Cima forum for the President of Infiniti's lineup. Brought to you by Infiniti Parts USA, your OEM source for Q45 parts!
djazzmo
Posts: 24
Joined: Tue May 13, 2008 7:28 am
Car: 2002 Infiniti Q45

Post

Want to bleed the brakes after turning the rotors. What the h@## is this?

When not using CONSULT-II
1. Loosen air bleeder on the top of master cylinder.
2. Slowly depress brake pedal fully to the stop.
3. Close air bleeder with pedal depressed.
4. Release pedal.
Repeat the steps 1 to 4 shown above, until new brake fluid
comes out.
5. Bleed air from brake path of the LH front or RH rear wheel (normal
bleeding).
CAUTION:
Check fluid level after approx. 1 minute, because it takes
approximately 1 minute to fill brake fluid in reservoir tank
fully.
6. After turning ignition switch ON, turn it OFF. Short-circuit the vehicle-side data link connector terminal No.
9 on to body ground.
7. Turn ignition switch ON with brake pedal depressed, and wait for at least 10 seconds. (Keep brake pedal
depressed during this time.)
8. Within approximately 40 seconds after turning ignition switch ON, repeat releasing and short-circulating
vehicle-side data link connector terminal No. 9 for 10 times to short-circuit to body ground. (Grounded to
body ground)
9. Release air bleeder on the LH front or RH rear wheel.
10. 2 or 3 seconds later, repeat turning VDC OFF switch ON to OFF for 10 times, after that turn it OFF.
11. 5 seconds later, the pre-charge pump operates for 20 seconds consecutively, then stops.
12. Tighten air bleeder.
13. Release brake pedal.
14. Disconnect data link connector terminal No. 9 from body ground.
15. Carry out steps 1 to 4 shown above.
16. Bleed brake line of four wheels (normal bleeding).

Is there a better(easier) way? This doesn't make much sense to me but I tried to bleed the lines the old fashioned way and now the brakes feel awful (and dangerous).


User avatar
Q451990
Moderator
Posts: 11030
Joined: Tue Jul 23, 2002 8:21 am
Car: 1990 Q45 - 118K, 2022 Toyota 4 Runner, 2004 Frontier M/T - 108K, 2012 Xterra (Mom's), 2023 Rogue (Inlaws)
Location: Columbia, SC
Contact:

Post

Easier would be to have it towed to a dealer or shop with Consult II. I suspect all of this is a process to cycle the ABS actuator and get the air out of it. I think I would just try to follow all of this this step by step and see what happens.

Heath

User avatar
Lokim
Posts: 681
Joined: Mon May 10, 2010 12:47 am
Car: 1994 Infiniti Q45 acquired 4/25/10 w/192K
Now at 222K and going strong!
Location: Seattle, WA
Contact:

Post

Or you could just manually bleed it and see what happens. On most ABS systems I've found that you can get the same results if you bleed at the wheels only but don't stop bleeding until you get 15 strokes w/ no air bubbles. It goes through more BF, but BF is cheap...


Return to “Q45 Forum / Cima Forum”