|
No.
|
TECH 1 Display
|
Conditions for
Checking
|
Nominal Value
|
Trouble Codes
|
Terminal
|
|
|
20
|
RECLINER MOTOR
|
Ignition ON
|
|
12
|
1,
2
|
|
|
|
|
Rocker switch for backrest forwards/ backwards not actuated
|
INACTIVE
|
|
5-pin
plug
|
|
|
|
|
Rocker switch for backrest forwards/ backwards pressed
forwards
|
FORWARD
|
|
|
|
|
|
|
Rocker switch for backrest forwards/ backwards pressed
backwards
|
BACK
|
|
|
|
|
|
|
Note:
When the rocker switch is actuated, the backrest moves
forwards or backwards.
If the motor has already moved to one of its end stops, the
motor will only move again (i.e. the
TECH 1 display will only change again) when the above rocker switch is
pressed in the other direction.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
The potentiometer and motor M72.4 for backrest adjustment
are connected to control unit K103 by a 5-pin plug with the designation
"backrest". The potentiometer is wired with the three plug
terminals designated (x) and the motor is wired with the two plug terminals
designated (y).
|
|
Notes on Trouble-shooting:
|
Nominal Value:
|
Cause of fault:
(If nominal value is not
attained)
|
|
· Ignition OFF, disconnect battery
negative terminal
· Remove driver's seat
· Release 5-pin plug "backrest"
and disconnect from control unit K103
· Using multimeter, measure resistance in
5-pin plug between Ter. 1 (y) and Ter. 2 (y)
|
higher than 1.5 W
|
· Lead interruption between 5-pin plug
and motor M72.4
· Lead short circuit between motor M72.4
and 5-pin plug Ter. 1 (y) and Ter. 2 (y)
|
|
|
· Using multimeter, measure resistance in
5-pin plug between Ter. 2 (y) and ground
|
higher than 200 kW
|
· Short circuit to ground
|
|
|
· Using multimeter, measure resistance in
5-pin plug between Ter. 2 (y) and Ter. 1 (x), Ter. 2 (x) and
Ter. 3 (x)
|
higher than 200 kW
|
· Motor lead has short circuit with
potentiometer lead
|
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