1999 Pontiac Grand Am
3.4L
V6
dash lights = ABS and Brake
codes =
c1236
tech = mw
question = I am just wondering if there is one common problem that
occurs when this code pops up and where to start trouble shooting.






MW:
Have had a few poor connections on the bottom side of the underhood fuse
block at the abs fuse and relay terminals causing low voltage.
Also poor grounds on the trans. bellhousing.
1 or 2 bad control modules.
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WARNING LIGHTS
ABS / Anti lock brake warning.

The anti-lock braking system (ABS) uses several sensors, motors, and a  computer in conjunction with the
normal braking system.

The
ABS regulates the brake pressure in order to reduce wheel lock-ups.  Reduced wheel lock-ups
improve the driver's control of the vehicle during  braking.

Improved stability and steering enable greater control of the vehicle in the  case of an abrupt stop.
The ABS operation is available from 5 km/h (3 mph) to the maximum vehicle speed.
A warning light means a problem was detected, and the system needs to be  scanned for codes in order
find out the area the fault is in. With the light on,  ABS operation is not present, but normal braking is.

The
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