98 venture p1671 mil control curcuit affecting brake light always on?

Question

hooked up obd2 scanner , i have a problem with no brake fluid to rear brakes..abs control module wont let check valve home position without dtcs erased this is a current and history fault and now my abs and brake light are both on and scanner is showing p1671 code what do i do to fix this?

Answer 1

P1671 This is Driver 4 line 1, what this mean is the Mil (check engine light) output control circuit, In other word you would be troubleshooting the insturment panel,via PCM, This code is for powertrain. What you need is ABS code, Bleed the system manual without scan tool, clear the codes as you stated to bring the check valve to the home position and disconnect the battery.And for a reminder the brake light is a reminder of low brake fluid.So jump the brake level indicator and see if the light brake light turns off. Because when this light turns off then you get to have a functioning ABS system as longs as ECBM ABS module is working,Just to let you know the ECBM is a big failed unit. Anyway bleed the brake in a conventional matter.Bleed the master cylinder,Next bleed the brake /modulator, starting at the rear valve (you can skip the bleeding of the modular valve) bleed the rear wheel cylinder,starting with the furthest away from the master cylinder and work you way to the nearest. hopefully you will have fluid for the rear.and if the ABS unit was not working regardless you still should have fluid come out of the rear.The only thing I can think of why no fluid to the rear is the porportioning valve being non op , they are on the mastercylinder.