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No.
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TECH 1 Display
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Conditions for
Checking
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Nominal Value
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Trouble Codes
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Terminal
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04
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DRIVER DOOR SW.
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Ignition ON
Driver's door CLOSED
Driver's door OPEN
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OPEN 12V
CLOSED 0V
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-
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7
8-pin
plug
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Note:
The TECH 1 display indicates the switch condition of
the driver's door contact switch.
DRIVER DOOR
SW.CLOSED means:
Switch closed = 0 volts, door open
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Notes on Trouble-shooting:
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Nominal Value:
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Cause of fault:
(If nominal value is not
attained)
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If nominal value OPEN
12V is not attained:
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· Remove driver's door contact switch
· Using multimeter, measure voltage at
driver's door contact switch/ lead GR (grey) to ground
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higher than 11 V
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· Lead interruption between driver's door
contact switch and Ter. 30
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If nominal value is attained:
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· Lead interruption between driver's door
contact switch S47 and control unit K103/ Ter. 7
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If nominal value CLOSED 0V is not attained:
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· Check whether actuating bolt of
driver's door contact switch jams
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Actuating pin can be moved
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· Driver's door contact switch faulty
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· Disconnect battery negative terminal
· Remove driver's door contact switch S47
· Using multimeter, measure resistance at
two lead connections to switch housing
Actuating
pin not pressed:
Actuating
pin pressed in:
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higher than 200 kW
approx. 0 W
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· Driver's door contact switch S47
defective
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Further possible faults:
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· Ground transfer resistance between S47
and body too high
· Control unit K103 defective
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