2011 GH1728 High idle and cruise control dropping out

SouthernCross

New Recruit
Owner/Operator
Hi,

The high idle and cruise control drop in and out randomly when in operation, I had a look at the high idle switch and it seemed ok.

The cruise control seems to work ok when the air conditioner is off but will drop out when the air conditioner is in operation.

I took it to the Hino dealer and they did a software update which did absolutely nothing to fix the issue.

The Hino is a crane truck so the high idle is super important.

Any help would be greatly appreciated.

Thanks
 

greasytshirt

Moderator
Staff member
Mechanic
Are you using the idle knob to control pto speed? If so, it needs to be reconfigured. The ecu needs to see that the PTO is engaged, and there are pto inputs available to do this.
 

greasytshirt

Moderator
Staff member
Mechanic
Brake switch misadjustment or failure is the most common cause of cruise control problems, but I don't know if Australian trucks are similar to US.
 

SouthernCross

New Recruit
Owner/Operator
Thanks greasy t shirt.

It is the brake switch causing the problem for both cruise and the idle. Can I repair the switch or just chuck it in the bin and buy a new one
 
Top