Discovery II
SUNROOF
76-6-6
DESCRIPTION AND OPERATION
Front sunroof switch
The front sunroof switch is located in the roof console above the windscreen in front of the front sunroof. It controls
the front sunroof motor via the sunroof ECU.
The front sunroof switch supplies an earth signal to the sunroof ECU. The pin at the ECU that receives the earth
signal determines whether ECU causes the sunroof to open or close.
TestBook cannot monitor the state of the front sunroof switch.
The following table lists the values which can be measured at the listed ECU pins when the conditions outlined are
met:
Signal values (connector connected)
Connector/Pin
No.
Condition
Resistance, ohms
C0784-2
Ignition in position II, front sunroof switch released
> 10,000
C0784-2
Ignition in position II, front sunroof switch open
< 0.5
C0785-7
Ignition in position II, front sunroof switch released
> 10,000
C0785-7
Ignition in position II, front sunroof switch closed
< 0.5
