Checking The Interface For Obd - Bosch BEA 150 Repair Instructions

5.4 Checking the interface for
OBD
5.5

Checking the interface for OBD

extern (without CAN-protocol)
34
Select the Interfaces menu and then
OBD.
Remove the 10-way Micro-Match plug
from X6 of the control module PCB.
Plug the 10-way shorting plug into X6 of
the control module PCB.
Start the interface test by double-clicking
the mouse or pressing Enter E.
If the interface test is error-free, the
message OK appears in the results box.
If the interface test is unsuccessful, an
error message is displayed.
For example: B0246:1300.
1300 = No shorting plug inserted or pins
3 and 5 of shorting plug not
jumpered.
If any error messages other than this one
are displayed, the control module PCB
must be replaced (Sec. 10.27).
For the functional test of the OBD printed circuit board you will require
a 15-pin sliding connector (shop made, see image below).
Schleifenstecker
K
Lötseite
8
15
L
GND
BUS+
9
1
BUS-
TSTBUS+
TSTBUS-
B+
i This menu allows you to test the func-
tion of the OBD PCB "to the outside"
(i.e. to the vehicle). This enables you
to determine whether the fault lies in
the vehicle or in the BEA.
In the BEA Service program, open the
menu Interface test.
In this menu, select the submenu OBD
extern.
Start the menu OBD external.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
sw
rt
GND sw
B+ rt