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Old 06-18-2014, 12:46 AM   #1
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Meritor Wabco ABS ECU Location?

I own a 2005 Winnebago Voyage / Workhorse W24 with a ABS light that wont go out, removed and cleaned all sensors and its still on.
Per repair manual i can force the blink code by grounding pin 8 off the ABS ECU, if i could only find it?
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Old 06-18-2014, 07:35 AM   #2
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Quote:
Originally Posted by ktoutoor View Post
I own a 2005 Winnebago Voyage / Workhorse W24 with a ABS light that wont go out, removed and cleaned all sensors and its still on.
Per repair manual i can force the blink code by grounding pin 8 off the ABS ECU, if i could only find it?
According to the 2009 version of the Chassis Guide, the ECM is the 'black box' mounted underneath the actuator mounting bracket. It also says there is a 14 pin connector to the vehicle, a 2 pin connector to the proportional solenoid valve, and a 3 pin connector to the pressure transducer.

I think you will find this stuff mounted above the driver's side exhaust run, and protected by a metal heat shield underneath it. FWIW, I'd be very wary of messing with this wiring because it is fed by a power source with a 45 amp fuse, AND a second power source with a 15 amp fuse. There is a detail schematic of the pin connections on page 178 of the 09CG.

I recommend taking it to a Workhorse ASC where they will have a Tech II, which is capable of reading / clearing ABS codes. I don't think "other" aftermarket code readers can access the ABS like the Tech II does.
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Old 06-18-2014, 12:05 PM   #3
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According to the 2009 version of the Chassis Guide, the ECM is the 'black box' mounted underneath the actuator mounting bracket. It also says there is a 14 pin connector to the vehicle, a 2 pin connector to the proportional solenoid valve, and a 3 pin connector to the pressure transducer......

FWIW, I'd be very wary of messing with this wiring because it is fed by a power source with a 45 amp fuse, AND a second power source with a 15 amp fuse. There is a detail schematic of the pin connections on page 178 of the 09CG.

I recommend taking it to a Workhorse ASC where they will have a Tech II, which is capable of reading / clearing ABS codes. I don't think "other" aftermarket code readers can access the ABS like the Tech II does.
I am so embarrassed....ALL THAT STUFF I POSTED pertains to the J72 AAPB and NOT to the ABS unit in the OP's thread. I sincerely apologize for any confusion my mistake may have caused.

ONLY the last paragraph (not in bold here) is correct regarding the ABS units....
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Old 06-27-2014, 10:51 PM   #4
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I found the the ECU, it is located just in front of the steering box on my w24 2005 Winnebago
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