1993 BMW M3 Electric

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Page 51 of 759

BMW M3 1993 E36 Workshop Manual 
NOTE-

"
On
carswith
OBD
ti,
specialized
OBD
11
scan
tool
equipment
must
be
used
to
access
the
DTCs,
either
using
the
BMW
special
tool
ora
`generic"
OBD
11
scan
tool
.
See
130
Fuel
Injection
.

"
The

Page 52 of 759

BMW M3 1993 E36 Workshop Manual 
100-
1
0
ENGINE-GENERAL

Table
d
.
OBD
I
Fault
(Blink)
Codes
(continued)

(1992-1995
modeis
only)

Graphic
representation
of
flashing
Check
Engine
light
fault
code
:
1221
-
;
5
Seconds
.
;--~
2
.5
r

Page 54 of 759

BMW M3 1993 E36 Workshop Manual 
100-
1
2
ENGINE-GENERAL

NOTE-

The
oxygen
sensor
signal
is
ignored
until
the
engine
reachesa
specified
minimum
temperature
.
Therefore,

	

The
primary
input
usedby
the
fuel
injection
system
to
dete

Page 55 of 759

BMW M3 1993 E36 Workshop Manual 
If
a
battery
cableconnection
hasno
visible
faults,
but
is
still
suspect,
measure
the
voltage
drop
across
the
connection
.
A
large
drop
indicates
excessive
resistance,
meaning
the
con-
nection
is
corr

Page 57 of 759

BMW M3 1993 E36 Workshop Manual 
al
Icld

Table
e
.
Engine
Driveability
Troubleshooting

c
l

	

1

	

I

	

f

	

I

	

I
Oxygen
sensor
faulty

	

Test
oxygen
sensor
.

ENGINE-GENERAL
100-
1
5

SYMPTOMS

a
.
Engine
fafs
tostart

b

Page 60 of 759

BMW M3 1993 E36 Workshop Manual 
110-2

	

ENGINE
REMOVAL
AND
INSTALLATION

8
.
Drain
engine
coolant
andremove
coolant
hoses
at-

	

10
.
Remove
radiator
cooling
fan
and
radiator
as
described

tached
to
cylinder
head
.

	

in
170
Ra

Page 69 of 759

BMW M3 1993 E36 Workshop Manual 
11
.
Detach
wiring
harness
duct
at
rear
bulkhead
panel
and
pull
complete
duct
forward
and
up
to
allow
access
to
rear
of
cylinder
head
cover
.

12
.
Remove
spark
plugs
and
spark
plugwire
loom
.

"
Rem

Page 72 of 759

BMW M3 1993 E36 Workshop Manual 
113-
6

	

CYLINDER
HEAD
REMOVAL
AND
INSTALLATION

32
.
Using
Torx
E12
socket,
remove
cylinder
head
bolts
in

	

2
.
Check
gasket
surface
of
cylinder
head
and
cylinder

the
sequence
indicated
.
See
F
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