Chassis S7009999 & Earlier

�@�`Diagnostics:

WIRING DIAGRAM: Earlier

Component Location:

COMPONENT LOCATION

22A Main fuse board in the dashboard.
216 ACC control module in centre of dashboard.
289 Anti-theft alarm control module under left-hand front seat.
331 Airbag control module under the centre console behind the Handbrake.
353 Radio/cassette player, in centre of dashboard.
357K Control module, electrically adjustable driver's seat with memory, under the seat.
430 Trionic control module behind side trim on right-hand side.
445 Data link connector (16-pin), under the dashboard adjacent to the steering wheel.
(H16-1)
500 Integrated Central Electronics (ICE) control module
LHD:above main relay board in dashboard
RHD:behind main relay board in dashboard
502 Transmission control module (TCM) in cabin on right-hand side of bulkhead partition.
505 Control module, M2.10.3, behind the side trim on right-hand side.
507 TCS control module under the right- hand front seat.
509 Sensonic control module, in the cabin on right-hand side of the bulkhead partition.
510 Control module, M2.8.1, behind the side trim on right-hand side.
540B Main instrument display panel 2
541 SlDunit2or3
547 ABS control module integrated with the brake unit, behind the battery.
565 TSAS control module in the luggage compartment on the left-hand side.

33-pin connectors
H33-1 Grey connector on bracket below the left-hand A pillar.
H33-2 Black connector on bracket below the left-hand A pillar.
H33-3 Blue connector on bracket below the left-hand A pillar.
H33-4 On the bulkhead partition behind the glove box.

GROUNDING POINTS
G33P Grounding point, connector bracket (Power) below the left-hand A pillar.
G33S Grounding point, connector bracket (Signal) below the left-hand A pillar.
G34P Grounding point, control module bracket (Power) below the right-hand A pillar.

DESCRIPTION OF OPERATION
For diagnosis of the car's electronic systems, a 16-pin data link connector is located under the dashboard adjacent to the steering column.

Current is supplied to the data link connector via fuse 13. The connector has power ground on pin 4 and signal ground on pin 5.

The following systems are connected to the data link connector as indicated:

Pin 1 Main instrument display panel 2(540B)
Audio 2 and 3 (359B, C)
SID units 2 and 3 (541B, C)
Automatic Climate Control (ACC) unit (216)
Pin 4 Power ground
Pin 5 Signal ground
Pin 6 Lamp-flash code (I lead)
Motronic 2.10.3 (505)
Motronic 2.8.1(510)
Pin 7 Transmission Control Module (502)
Motronic 2.10.2 (505)
Motronic 2.8.1(510)
Trionic (430)
Pin 8 Airbag(331)
ABS (547)
Integrated Central Electronics (500)
Traction Control System (507)
Anti-theft alarm (289)
Electrically adjustable driver's seat (357)
Sensonic (509)
Top Stack Actuation System (565)
Pin 9 Main instrument display panel 2(540B)
Audio 2 and 3 (353B, C)
SID units 2 and 3 (541B, C) ACC unit (216)
Pin 11 Electrically adjustable driver's seat (357K)
Pin 14 Fuel pump relay 102 via anti-theft alarm control module 289
Pin 16 Power supply (+30 circuit)

FAULT DIAGNOSIS HINTS
1 Check that fuse 13 is intact and supplied with current.
2 Check that communication can be established with other systems connected to the same connector. If negative, check the wiring.
3 Check the wiring, connectors and ground connections.