C1095 - ABS Pump Motor Circuit Failure
#1
C1095 - ABS Pump Motor Circuit Failure
This is the code that has come up on my truck, and keeping the ABS light illuminated. It came on a few weeks ago. Wife said she was driving, someone cut her off, and she had to slam on the brakes... resulting in the light popping up and staying on.
Anywho, brakes seem to work fine. I recently replaced the pads and rotors, but I can't get the light to go away. Not sure if it's an actual pump failure, or if it's just an electronic/sensor failure.
Any tips?
Anywho, brakes seem to work fine. I recently replaced the pads and rotors, but I can't get the light to go away. Not sure if it's an actual pump failure, or if it's just an electronic/sensor failure.
Any tips?
#4
Curtis,
This s a strange one. Don't understand why slamming on the brakes would cause ABS problems, but:
Did you check Fuse 25 10A Mni and Fuse 602 60A Maxi?
There must be an electrical connector that goes to the ABS module. Somethng has to operate the solenoids for the propostioning valves.
Reseat that sucker.
I can't find the ABS module wiring on any diagrams.
I wonder if by "Hydraulic pump" they are referring to the PS pump for the hydroboost.
Edit: Clux and Roland beat be to it while I was going on and on.
Here's some info Roland posted about ABS sensors.
Front ABS Sensor Ohm reading across the Sensor End connection
4x2 F250/350: 2,000-4,000 ohms
4x2 F450/550: 650-800 ohms
4x4 F250/550: 650-800 ohms
Rear ABS Sensor (VSS) Ohm Readings
All: 800-3,500 ohms
Wish I could be more specific, but like you, I have never seen that code before.
Clux and Roland beatme to it while I was
This s a strange one. Don't understand why slamming on the brakes would cause ABS problems, but:
Did you check Fuse 25 10A Mni and Fuse 602 60A Maxi?
There must be an electrical connector that goes to the ABS module. Somethng has to operate the solenoids for the propostioning valves.
Reseat that sucker.
I can't find the ABS module wiring on any diagrams.
I wonder if by "Hydraulic pump" they are referring to the PS pump for the hydroboost.
Edit: Clux and Roland beat be to it while I was going on and on.
Here's some info Roland posted about ABS sensors.
Front ABS Sensor Ohm reading across the Sensor End connection
4x2 F250/350: 2,000-4,000 ohms
4x2 F450/550: 650-800 ohms
4x4 F250/550: 650-800 ohms
Rear ABS Sensor (VSS) Ohm Readings
All: 800-3,500 ohms
Wish I could be more specific, but like you, I have never seen that code before.
Clux and Roland beatme to it while I was
#5
The following users liked this post:
#7
I had the luxury of fixing a lemon law candidate Ford sent us that had 3 HCUs replaced
It was a 92 Super Coupe
Went through the pinpoint test steps many times myself and it kept saying replace HCU
You need to read between the lines and learn some syatem operation
The district rep got involved who thought he was a mechanic too and decided it needed a new HCU
I told him that would be 4 then and was he sure?
Took the car home for a week
Fixed it over a bottle of Jack Daniels
It was a ground wire to the HCU small 16 gauge wire that had 5 ohms to ground
It was a 92 Super Coupe
Went through the pinpoint test steps many times myself and it kept saying replace HCU
You need to read between the lines and learn some syatem operation
The district rep got involved who thought he was a mechanic too and decided it needed a new HCU
I told him that would be 4 then and was he sure?
Took the car home for a week
Fixed it over a bottle of Jack Daniels
It was a ground wire to the HCU small 16 gauge wire that had 5 ohms to ground
Trending Topics
#8
Motor test cycle you heard a click?
The motor needs to run
Basically, when the vehicle hits 7-14 MPH the module senses whether or not it has the pressure to use the abs brakes and runs the pump motor for long enough to build 5000psi
That is your failure point in most cases IMO The pump either doesn't run or it doesn't build or sense pressure
You start checking grounds if you see no solution in the pinpoint tests
The motor needs to run
Basically, when the vehicle hits 7-14 MPH the module senses whether or not it has the pressure to use the abs brakes and runs the pump motor for long enough to build 5000psi
That is your failure point in most cases IMO The pump either doesn't run or it doesn't build or sense pressure
You start checking grounds if you see no solution in the pinpoint tests
Thread
Thread Starter
Forum
Replies
Last Post
mcraven8
Brakes, Steering, Suspension, Tires, & Wheels
8
01-01-2011 12:53 PM