|
From the workshop manual:
Heating
Heating of the exterior mirrors is controlled by the GEM and the respective door modules, and is active while the ignition switch is in position II.
The GEM receives the ambient air temperature value from the instrument cluster via the K bus. The GEM converts the ambient air temperature value to an on-time percentage and transmits it on the P bus to the two door modules, which then energize the exterior mirror heating elements accordingly. The on-time percentage is increased while the windshield wipers are on.
Then there's a table which indicates the percentage of max heating doesn't hit 0 until the external temp is greater than 25°C (unless the wipers are on in which case it's greater than 35°C).
-10 = 100%
-10 to 0 - 75%
0 to 15 - 50%
15-25 - 25%
HTH!
|
6th Jun 2020 2:39pm
