tarphenry

Well-Known Member

• May 5, 2021

• #41

FOUND IT !!!!!!! Supply from fuse 17 must be broken ,its live at the fuse and is supplying the brake lights but not supplying the HEVAC unit, which in turn supplies the air suspension ECU.

 

Rubberknees

Well-Known Member

Full Member

• May 5, 2021

• #42

tarphenry said:

FOUND IT !!!!!!! Supply from fuse 17 must be broken ,its live at the fuse and is supplying the brake lights but not supplying the HEVAC unit, which in turn supplies the air suspension ECU.

Click to expand...

Well done treat yourself to a beer

 

tarphenry

Well-Known Member

• May 5, 2021

• #43

Thanks to all who offered advice.

 

pwood999

Well-Known Member

Full Member

• May 6, 2021

• #44

Well done on finding your issue.

tarphenry said:

FOUND IT !!!!!!! Supply from fuse 17 must be broken ,its live at the fuse and is supplying the brake lights but not supplying the HEVAC unit, which in turn supplies the air suspension ECU.

Click to expand...

Just to clarify for future readers, the HEVAC does NOT feed the EAS ECU. Fuse 17 powers HEVAC, Stop Lamp Switch, EAS Inhibit Switch & Ride Height switch. EAS ECU is fed via F44 & Timer Relay. However failure of F17 may prevent EAS from working !!

 

RangeRoller dt

Well-Sprung Member

• May 6, 2021

• #45

See post #12

 

tarphenry

Well-Known Member

• May 7, 2021

• #46

Whatever, there were no indicator lights on the EAS and now there is. must be magic.