AC HB relay open fault

Discussion and support for M1 Plug-In ECUs

AC HB relay open fault

Postby Victorgarage on Tue Mar 30, 2021 9:28 am

I am using plug in harness from motec for my auto 2013 Toypta 86.

I am using v5 packages firmware

Everytime i am turn on the AC.. it gives me fault on the F3 which is HB relay open fault.

Sometimes the ac clutch stay off for long time than back on and then work normal.

Sometimes ac works fine

But the HB relay fault is always there. Wether the ac clutch work fine or not.

Is this something i should not worry or something i should take care.
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