Driver

��TElectrically Adjustable Front Seat, Driver:

WIRING DIAGRAM

Electrically Adjustable Front Seat: Component Location:

COMPONENT LOCATION VIEW

Electrically Adjustable Front Seat: Component ID:

COMPONENT ID
22a Main fuse board behind the access panel in the glove box.
54D Door switches in the driver's door pillar.
54 Door switches in the passenger's door pillar.
230 Distribution terminal (+30 circuit), in main fuse box behind the glove box.
231 Distribution terminal (+54 circuit), in main fuse box behind the glove box.
358 Switch, electrically adjustable passenger seat, on the outer side of the seat.
357Da-d Electric motors, driver's seat, under the seat.
357Pa-d Electric motors, passenger's seat, under the seat.
369 Microswitch, seat backrest, between the seat cushion and backrest beside the inner edge of each seat.
446Da Relay for electrically adjustable driver's seat via the ignition switch, under the seat.
446Db Relay for electrically adjustable driver's seat via the door switch, under the seat.
446Pa Relay for electrically adjustable passenger's seat via the ignition switch, under the seat.
446Pb Relay for electrically adjustable passenger's seat via the door switch, under the seat.

2-Pin Connectors
H2-15 In the right-hand A pillar.
H2-33 In the left-hand A pillar.

3-Pin Connectors
H3-10 Under the left-hand seat, to the left on the electronics console.
H3-11 Under the right-hand seat, to the right on the electronics console.

8-Pin Connector
H8-2 Under the passenger's seat.

10-Pin Connectors
H10-26 Under the driver's seat.
H10-27 Under the passenger's seat.

Grounding Points
G14 Grounding point, left-hand front seat member.
G24 Grounding point, right-hand front seat member.

DESCRIPTION OF OPERATION
The front seats can be adjusted by means of switches on the outer side of each seat. Electric motors move the seat lengthwise, change the height of the seat cushion at front and rear, and change the rake of the backrest.

When the ignition switch is in the Drive position, current is supplied to:
^ switch 357D on the driver's seat via fuse 25
^ switch 357P on the passenger's seat via fuse 26.

The following motors are controlled by switch 357:
^ Electric motor 357Da/Pa moves the seat forwards and rearwards.
^ Electric motor 357Db/Pb raises and lowers the tront of the seat.
^ Electric motor 357 Dc/Pc raises and lowers the rear of the seat.
^ Electric motor 357Dd/Pd changes the rake of the seat backrest. It can be reclined until it rests against the rear seat cushion. Forward movement is limited by microswitch 369.

Relay 446 Da/Pa, which is controlled by the door switches, enables the seat to be adjusted even when the ignition switch is in the OFF position.

On M1997 and later models a driver's seat without memory is also available.

FAULT DIAGNOSIS HINTS
Electrical adjustment of the seat is also possible with the ignition switch in the OFF position.
1. Check that fuses 25 and 26 are intact and supplied with current.
2. Check that current is supplied to switch 358.
3. Check that current is supplied to the motors by activating the corresponding switches.
4. Check the connectors, wiring harness and ground connections.