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