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2010 MACK CHU613 ATC CODE 77 FMI 7 changed both front abs…

2010 MACK CHU613 ATC...

2010 MACK CHU613 ATC CODE 77 FMI 7 changed both front abs sensors and modulators seem to power up ok. checked pins for corrosion and still cant get code to clear.

Mechanic's Assistant: What's the make/model/year of your truck? Engine type?

1M1AND7Y5BM007605 2010 mack chu613 mp7

Mechanic's Assistant: Are you fixing your truck yourself? What have you tried so far?

Changed both front abs sensors and modulators seem to power up ok. checked pins for corrosion and still cant get code to clear.

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Answered in 2 hours by:
9/13/2017
Technician: Daniel Wilson,
 replied 4 years ago
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 14,669
Experience: Owner at DJ Wilson
Verified

Hi my name is***** with me while I pull up some information for you

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Technician: Daniel Wilson,
 replied 4 years ago

Bendix air brake system or Wabco ?

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Technician: Daniel Wilson,
 replied 4 years ago

If the abs sensor connectors are round , it's a Wabco system and if they are square , it's a bendix system

Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 14,669
Experience: Owner at DJ Wilson
Verified
Daniel Wilson and 87 other Medium and Heavy Trucks Specialists are ready to help you
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Customer reply replied 4 years ago
Wabco
Technician: Daniel Wilson,
 replied 4 years ago
Phone call session started
Technician: Daniel Wilson,
 replied 4 years ago

Click on these links for two options of ABS modules and try the blink code procedure and troubleshooting for what blink codes you get.

Wabco 1

Click this link and let me know which system matches your truck and what blink codes you get.

Troubleshooting

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Customer reply replied 4 years ago
cant get it to blink code. just got off the phone with Wabco and they have no record of SID 77 FMI 7 and think it is a Mack code. So they pretty much passed the buck.
Technician: Daniel Wilson,
 replied 4 years ago

Thanks for the update. That is why I was trying to see if we could get a blink code. I see the link did not post...

Click below

Troubleshooting

What numbers are with the 77 FMI7 136?

What scan tool are you using to pull the codes?

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Customer reply replied 4 years ago
I am using the dash diagnostics tool, Wabco Toolbox 10 and a Cojali system all three are getting the same code.trying to add a photograph of the dash, but add files is not working. its ABS (136) SID 77 FMI 7 on all three
Technician: Daniel Wilson,
 replied 4 years ago

If the sensors and wiring are confirmed good the problem has to be in the module software which will likely need to be reset.

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