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ABS light on

Tiny
ASEMASTER6371
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Good afternoon.

Okay, is the scan tool he is using able to monitor the ABS? Some scan tools do not have that availability.

Roy
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Friday, March 9th, 2018 AT 12:07 PM (Merged)
Tiny
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Yes.
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Friday, March 9th, 2018 AT 12:07 PM (Merged)
Tiny
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Okay, he needs to verify powers and grounds to the ABS module. If he has these then the module is the issue. It is not allowing anything to access it.

Roy
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Friday, March 9th, 2018 AT 12:07 PM (Merged)
Tiny
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  • 37 POSTS
  • 2004 NISSAN FRONTIER
  • 3.3L
  • V6
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
Hello Roy, I found a diagram of the t39 connector that goes to the abs module, I checked pin 44 to ground and it only has 7.5 volts, the wire is a solid blue with a white stripe, I just have to find out where the other end is, any suggestions, thanks Henry(sorry to bother you)
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Monday, March 12th, 2018 AT 11:21 AM (Merged)
Tiny
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Hi, you never bother me.

Let me get a diagram for you

Roy
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Monday, March 12th, 2018 AT 11:21 AM (Merged)
Tiny
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Three powers to the module. Check for battery voltage to all three pins.

Roy
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Monday, March 12th, 2018 AT 11:21 AM (Merged)
Tiny
CHASE156
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  • 37 POSTS
  • 2004 NISSAN FRONTIER
  • 3.3L
  • V6
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
Hello Roy, seems as though it is the ABS module. I have all three voltages there, I have to see what I am going to do now. Thanks
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Monday, March 12th, 2018 AT 11:21 AM (Merged)
Tiny
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Okay.
If you replace with a used one, it will have to be flashed to your truck.

Roy
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Monday, March 12th, 2018 AT 11:21 AM (Merged)
Tiny
CHASE156
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  • 2004 NISSAN FRONTIER
  • 3.3L
  • V6
  • 4WD
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Hello Roy,

I am assuming the abs actuator has a high psi stored, if so how would I bleed off that high pressure?
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Tuesday, March 13th, 2018 AT 5:32 PM (Merged)
Tiny
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Only line pressure here, ABS has an internal pump, that activates when the system is required, what is the actual problem you have?
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Tuesday, March 13th, 2018 AT 5:32 PM (Merged)
Tiny
CHASE156
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  • 37 POSTS
  • 2004 NISSAN FRONTIER
  • 3.3L
  • V6
  • 4WD
  • AUTOMATIC
  • 160,000 MILES
Thanks for your reply, I thought even when the truck was off it still had a high psi stored.
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Wednesday, March 14th, 2018 AT 1:26 PM (Merged)
Tiny
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There should be no pressure in the system, just take normal precautions when opening any hydraulic system.
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Wednesday, March 14th, 2018 AT 1:26 PM (Merged)
Tiny
CHASE156
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  • 2004 NISSAN FRONTIER
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  • 6 CYL
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Hello Roy,
I wanted to update you on this issue. I located and bought a used module and installed, (I did not flash the module). Still the same issue, light will not go out. I bought the Bluedriver OBD2 and it says no pending ABS codes. I tried clearing the light with this unit still no good.
Do you know where pin 44 connects to? I figured I would track that down to another connector because it only has 7.4 volts. Any other suggestions? Thanks, Henry
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Friday, April 6th, 2018 AT 10:20 AM (Merged)
Tiny
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Good morning.

Let me check.
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Friday, April 6th, 2018 AT 10:36 AM
Tiny
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Goes to the ABS light in the cluster.

The light may be on from the flash not being done as well.
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Friday, April 6th, 2018 AT 10:42 AM

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