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ABS Light

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  #1  
Old 10-17-2010, 09:38 AM
Scannerman
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Default ABS Light

I have a 2003 T&C with an ABS light that comes on almost every time I drive it. I had a shop read the code and they told me it was the ABS pump. Does this mean the entire pump needs to be replaced or just a module? Also, do I need any special tools to perform the job?

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Scannerman
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  #2  
Old 10-17-2010, 10:43 PM
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Welcome to DF
If you have the code, please post it and i may have the PDF file for repairing the problem.
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Old 10-18-2010, 12:21 AM
Scannerman
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They didn't give me a code, all the computer said was ABS Pump.
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Old 10-18-2010, 09:13 PM
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Here is part of the PDF file. I can send the rest to you by email. Just send me your email address and i'll send it.
Symptom:
PUMP CIRCUIT FAILURE
When Monitored and Set Condition:
PUMP CIRCUIT FAILURE
When Monitored: Ignition on. The CAB commands the pump on at 20 km/h (12 mph) to
check its operation, if the brake switch is not applied. If the brake is applied, the test will
run at 40 km/h (25 mph).
Set Condition: The DTC is stored when the CAB detects: 1) Improper voltage decay after
the pump was turned off. 2) Pump not energized by the CAB, but voltage is present for 3.5
seconds. 3) Pump is turned on by the CAB, but without sufficient voltage to operate it.
POSSIBLE CAUSES
CAB - PUMP MOTOR RUNNING CONTINUOUSLY
ABS PUMP FUSE
ABS PUMP MOTOR INTERMITTENT DTC
DAMAGED CAB/CAB HARNESS CONNECTOR
ABS PUMP FUSED B(+) CIRCUIT INTERMITTENT SHORT TO GROUND
ABS PUMP FUSED B(+) CIRCUIT SHORT TO GROUND
CAB - INTERNAL FAULT
ABS PUMP MOTOR INOPERATIVE
ABS PUMP MOTOR OPEN
ABS PUMP MOTOR B(+) CIRCUIT OPEN
ABS PUMP MOTOR GROUND CIRCUIT OPEN
CAB - INTERNAL FAULT
TEST ACTION APPLICABILITY
1 Turn the ignition off.
Turn the ignition on.
Monitor the ABS Pump Motor for continuous operation.
NOTE: The CAB must sense ALL wheels at 25 km/h (15 mph) before it will
extinguish the ABS indicators.
Is the ABS Pump Motor running continuously?
All
Yes ! Replace the Controller Antilock Brake in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
No ! Go To 2
27
BRAKES (CAB)

Last edited by master tech; 10-18-2010 at 09:13 PM. Reason: adding to story
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  #5  
Old 10-18-2010, 11:33 PM
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If they just read the code, then they only did half the job. They need to check powers and grounds and make sure. Don't just buy an ABS pump because they said the code says so.
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Old 10-19-2010, 12:34 AM
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I agree. Need to ck power and ground. Thats why i posted just the first page for the pump circuit code.With the other pages of the pdf file, it will guide the user to the problem.
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Old 10-19-2010, 09:29 AM
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Quote:
Originally Posted by Scannerman View Post
I had a shop read the code and they told me it was the ABS pump
Yeah MT, I saw this statement and I figured I would hammer the issue home! lol
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Old 10-25-2010, 03:47 PM
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I went back to the shop and had them read the code again. I wrote down exactly what it said below.

DTC______
Hydraulic Pump Circuit Malfunction

Thanks
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Old 10-26-2010, 09:56 AM
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Quote:
Originally Posted by Scannerman View Post
I went back to the shop and had them read the code again. I wrote down exactly what it said below.

DTC______
Hydraulic Pump Circuit Malfunction

Thanks
Take it to someone who actually has the ability to do pinouts and make sure it's the pump before you go blowing all that $$$$$. They seem to be very good at reading codes and making repairs verbatim, but that's about it.
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