Relay unit, radiator fans (706c), Z19DTH AUT
|
Relay unit, radiator fans (706c), Z19DTH AUT
|
Relay unit containing relays and resistors and thermal fuse.
Pin No.
|
Signal type
|
Description
|
3
|
+30
|
Supplied with power from fuse holder 748.
|
6
|
+30
|
Supplied with power from fuse holder 748.
|
2
|
Ground
|
Grounded in grounding point G2.
|
7
|
Ground
|
Grounded in grounding point G2.
|
4, 5 and 8
|
Control signal. 0 V = active.
|
Grounded by the ECM. The pins are grounded differently depending on current fan stage, see below.
|
Current values
Stage
|
Pin 8
|
Pin 5
|
Pin 4
|
1
|
grounded
|
|
|
2
|
|
grounded
|
|
3
|
grounded
|
grounded
|
|
4
|
grounded
|
grounded
|
grounded
|
In stage 1 the fan motors are connected in series and are supplied via pin 7.
•
|
Power supply
|
•
|
Control
|