heater BMW 318is 1999 E36 Electrical Troubleshooting Manual




COMPONENT LOCATION CHART







COMP.8500.0 7100.0LOCATION DESCRIPTION
E44 . . RIGHT LICENSE PLATE LIGHT . . . . . . . . . . underside of luggage compartment lid, near license plate . . . . . . . . . . . . . . . . . . . . . . 09-1

E45y .
CASSETTE BOX LIGHT . . . . . . . . . . . . . . . . .
center of dash





E46 . .

LEFT LUGGAGE COMPARTMENT LIGHT
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . .
in LH rear side of luggage compartment



E47 . .

RIGHT LUGGAGE COMPARTMENT LIGHT
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . .

in RH rear side of luggage compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

03-3



E48 . .

DOOR LOCK HEATER . . . . . . . . . . . . . . . . . .

LH front door




E51 . . LEFT WASHER JET HEATER . . . . . . . . . . . . on underside of engine hood
E52 . . RIGHT WASHER JET HEATER . . . . . . . . . . . on underside of engine hood
E56 . . DRIVER’S SEATBACK HEATER . . . . . . . . . . in upper LH front seatback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-3

E57 . .
DRIVER’S SEAT HEATER . . . . . . . . . . . . . . . .
under LH front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23-3

E58 . . PASSENGER’S SEAT HEATER . . . . . . . . . . . underside of RH front seat
E59 . . PASSENGER’S SEATBACK HEATER . . . . . in upper RH front seatback
E61 . . LEFT FRONT FOOTWELL LIGHT . . . . . . . . . LH footwell
E62 . . RIGHT FRONT FOOTWELL LIGHT . . . . . . . right footwell

E82 . .

TRANSMISSION POSITION INDICATOR
LIGHT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

center console





E96 . .
GEAR SHIFT LEVER INDICATOR . . . . . . . .
center console



E99 . . HARD TOP CONNECTOR 1 . . . . . . . . . . . . . . in convertible top compartment
E100y HARD TOP CONNECTOR 2 . . . . . . . . . . . . . . in convertible top compartment
E101 . LEFT LUGGAGE COMPARTMENT LIGHT . in LH rear side of luggage compartment (Convertible)
E102 . RIGHT LUGGAGE COMPARTMENT LIGHT in RH rear side of luggage compartment (Convertible)

F97 . . .

FUSIBLE LINK . . . . . . . . . . . . . . . . . . . . . . . . . .

in RH side of luggage compartment




COMPONENT LOCATION CHART







COMP.8500.0 7100.0LOCATION DESCRIPTION
S21w . ENGINE HOOD SWITCH . . . . . . . . . . . . . . . . front RH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2

S28 . .
CRUISE CONTROL SWITCH . . . . . . . . . . . . .
on steering column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
24-3

S29 . . BRAKE LIGHT SWITCH . . . . . . . . . . . . . . . . . LH footwell on brake pedal support bracket behind LH footwell trim . . . . . . . . . . . . . 26-3
S30 . . BRAKE LIGHT SWITCH . . . . . . . . . . . . . . . . . LH footwell on brake pedal support bracket behind LH footwell trim . . . . . . . . . . . . . 26-2
S31 . . PARK BRAKE SWITCH . . . . . . . . . . . . . . . . . . center console on rear of park brake lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31-2
S32 . . CLUTCH SWITCH . . . . . . . . . . . . . . . . . . . . . . LH footwell on clutch pedal support bracket behind LH footwell trim . . . . . . . . . . . . . 26-3

S36 . .
TEMPERATURE SWITCH . . . . . . . . . . . . . . . .
front RH side of engine compartment near RH headlight assembly . . . . . . . . . . . . . .
09-3

S36y . DOUBLE TEMPERATURE SWITCH . . . . . . . RH top of radiator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 09-3
S38 . . TILT/SLIDE SUNROOF SWITCH (SHD) . . . . roof
S40y . CENTRAL POWER WINDOW SWITCH . . . . center console
S47 . . DRIVER’S DOOR LOCK SWITCH . . . . . . . . . LH front door, in door at key lock assembly

S48 . .

DRIVER’S DOOR HANDLE SWITCH . . . . . .

in driver’s door




S49 . . PASSENGER’S DOOR LOCK SWITCH . . . . RH front door, in door at key lock assembly
S51 . . DRIVER’S SEAT, SEAT CONTROL SWITCH LH front seat
S52 . . DRIVER’S SEAT LUMBAR SWITCH . . . . . . . LH front seat

S53 . .
DRIVER’S SEAT, SEAT HEATER SWITCH .
center console near gearshift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30-2



S54 . .

PASSENGER’S SEAT, SEAT HEATER
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
center console near gearshift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30-1



S56 . .

PASSENGER’S SEAT, SEAT CONTROL
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
under RH front seat



S58 . .

DRIVER’S SEAT BELT SWITCH . . . . . . . . . .

in LH front seat belt buckle




S59 . . PASSENGER’S SEAT BELT SWITCH . . . . . in RH front seat belt buckle




COMPONENT LOCATION CHART







COMP.8500.0 7100.0LOCATION DESCRIPTION


S61y .

LUGGAGE COMPARTMENT LIGHT
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
underside of luggage compartment lid left . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

34-2


S63 . . ENGINE COOLANT LEVEL SWITCH . . . . . . front RH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-1

S64 . .
WASHER FLUID LEVEL SWITCH . . . . . . . . .
front RH side of engine compartment on washer fluid reservoir . . . . . . . . . . . . . . . . .
10-1

S75 . .

BLOWER SWITCH . . . . . . . . . . . . . . . . . . . . . .

center of dash




S77 . . DRIVER’S MAKE–UP MIRROR SWITCH . . above LH sun visor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38-1


S78 . .

PASSENGER’S MAKE–UP MIRROR
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
above RH sun visor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23-1


S123 . ABS PEDAL TRAVEL SENSOR . . . . . . . . . . . near brake master cylinder (M3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-3
S126y DRIVER’S POWER WINDOW SWITCH . . . . center console near gearshift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31-1

S127y
PASSENGER’S POWER WINDOW
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
center console near gearshift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

31-1



S128z
LH REAR POWER WINDOW SWITCH . . . .
center console



S129z RH REAR POWER WINDOW SWITCH . . . . center console
S143 . CONVERTIBLE TOP ACTUATING SWITCH center console


S164 .

CONVERTIBLE TOP END–POSITION MI-
CRO SWITCH . . . . . . . . . . . . . . . . . . . . . . . .
at convertible top linkage






S165 .

CONVERTIBLE TOP POSITION MICRO
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
at convertible top linkage






S196 .

REAR WINDOW BLOWER MICRO
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
in convertible top compartment, left . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

35-2


S198 JET HEATER THERMOSWITCH . . . . . . . . . . front LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37-3


S213 .

LUGGAGE COMPARTMENT LID MICRO
SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
underside of luggage compartment lid




COMPONENT LOCATION CHART







COMP.8500.0 7100.0LOCATION DESCRIPTION
X817 . (1 PIN, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . . rear of engine compartment behind RH fresh air cowl

X899 .
(12 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . .
behind center of dashboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


01-3
X904 . (4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . LH side of IHKA Plenum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29-1 03-3
X905 . (5 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . behind center of dashboard
X999 . (4 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . behind center of dashboard left . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03-3
X1001 (4 PINS, NATURAL) . . . . . . . . . . . . . . . . . . . . . RIGHT REAR SPEAKER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03-3
X1002
(4 PINS, NATURAL) . . . . . . . . . . . . . . . . . . . . .
LEFT REAR SPEAKER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


03-3
X1014 (1 PIN, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . . center console near gearshift lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30-2
X1070 (18 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . center console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03-1 01-5
X1071 (18 PINS, NATURAL) . . . . . . . . . . . . . . . . . . . . center console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03-1 01-5
X1074 (15 PINS, NATURAL) . . . . . . . . . . . . . . . . . . . . below LH side of dash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 00-3 00-3
X1075

(15 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . .

below LH side of dash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

00-3

00-3
X1148 (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . front LH side of engine compartment, JET HEATER THERMOSWITCH . . . . . . . . . 37-3
X1155 (3 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . center console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-1
X1162 (2 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . near brake master cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-3

X1165
GROUND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
below LH side of dash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
07-1

X1166 GROUND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . behind RH footwell trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 07-3
X1170 (42 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . behind glove box (glove box removed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-3 09-4
X1171 (55 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . behind glove box (glove box removed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-3 00-1
X1176 (25 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . LH side of engine compartment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 05-2
X1178

(2 PINS, NATURAL) . . . . . . . . . . . . . . . . . . . . .

below center console LH side of gearshift selector




X1193 (3 PINS, BLACK) . . . . . . . . . . . . . . . . . . . . . . . . center console RH side of gearshift selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-1




COMPONENT LOCATION VIEWS








X382
E56
DRIVER’S SEAT-
BACK HEATER X275X726X727X728X729X778E57
DRIVER’S SEAT
HEATER
M50
DRIVER’S SEAT
CUSHION TILT
MOTORM51
DRIVER’S SEAT
MOVEMENT
MOTOR
M52
DRIVER’S SEAT
HEIGHT MOTOR
M53
DRIVER’S SEAT-
BACK RECLINER
MOTOR X402

E36
PASSENGER’S
MAKE–UP MIRROR
LIGHT
S78
PASSENGER’S
MAKE–UP MIRROR
SWITCH





COMPONENT LOCATION VIEWS










S54
PASSENGER’S
SEAT, SEAT
HEATER SWITCH
S3
AUTOMATIC
TRANSMISSION
RANGE SWITCH S6
ASC SWITCH
S53
DRIVER’S SEAT,
SEAT HEATER
SWITCH
X531
X532X651X1014
X658
S18
HAZARD SWITCH
X317
X320X511X516


S198
JET HEATER
THERMOSWITCH




COMPONENT LOCATION VIEWS







B62002
OXYGEN SENSOR
(BEHIND
CATALYTIC
CONVERTER)B62001
OXYGEN SENSOR
(IN FRONT OF
CATALYTIC
CONVERTER)

X62001
X1148X62002