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dsalinas1939
Top Member

USA
1316 Posts

Posted - 09/13/2017 :  1:00:09 PM  Show Profile  Reply with Quote
i have this bus i put an hcu unit in with ecm and ever since i did that the child check doesnt work is there any connection between the to? when u turn bus off the i guess warn buzzer beeps and headlights flash but it turns itself off before u get to back of bus this is the second bus i have come acroos when i changed the hcu with ecm on it

Edited by - dsalinas1939 on 09/15/2017 04:59:33 AM

torque
Advanced Member

Canada
358 Posts

Posted - 09/15/2017 :  11:19:44 AM  Show Profile  Reply with Quote
I have one doing the same. I have not had time yet to diagnose it but they are saying to check the diodes. There are 2 or 3 of them, they will be above the side electrical fuse box. They are encased in plastic, white just plugged into the end of a connector. You will have to remove the long plastic cover near the top of the door opening and they are tucked in that track with a bunch of wires. My diodes were OK but the system still works as you said, perhaps you will be lucky and it is one of the diodes :)
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dsalinas1939
Top Member

USA
1316 Posts

Posted - 09/15/2017 :  12:46:26 PM  Show Profile  Reply with Quote
ok thanks will try that
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