lumbar support BMW 318is 1999 E36 Electrical Troubleshooting Manual




INDEX








POWER WINDOW SWITCH, DRIVER’S, S126y 5133.1-01. . . . . . .
POWER WINDOW SWITCH, PASSENGER’S, S127y 5133.1-01. . .
POWER WINDOWS (FH) 5133.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PRESSURE SWITCH, B8y 6450.7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PRESSURE SWITCH, B9508 6450.7. . . . . . . . . . . . . . . . . . . . . . . . . . .
PROGRAM SWITCH, S8503 2460.. . . . . . . . . . . . . . . . . . . . . . . . . . . .
PYROTECHNICAL BELT TENSIONER,
DRIVER’S SIDE, G12 3234.0-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PYROTECHNICAL BELT TENSIONER,
PASSENGER’S SIDE, G13 3234.0-00. . . . . . . . . . . . . . . . . . . . . . . .
RADIO, N9 6510.0-00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RADIO, N9 6510.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RADIO/HIFI/TOP HIFI 6510.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RADIO/STEREO 6510.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REAR POWER WINDOW SWITCH, LH, S128z 5133.1-02. . . . . . . .
REAR POWER WINDOW SWITCH, RH, S129z 5133.1-02. . . . . . . .
RECIRCULATION FLAP MOTOR, M40 6450.7-03. . . . . . . . . . . . . . .
RECIRCULATION FLAP MOTOR, REAR, M46 6450.7-03. . . . . . . .
REGULATION FLAP MOTOR, M44 6450.7-03. . . . . . . . . . . . . . . . . .
RELAY MODULE, A5 5133.1-04. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RELAY MODULE, A5 6100.0-04. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RESISTOR, R8554 0670.4-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REVERSING LIGHT SWITCH, S8511 6322.0-00. . . . . . . . . . . . . . . .
ROLLOVER PROTECTION ACTUATOR, LH, Y85 5430.1-03. . . . . .
ROLLOVER PROTECTION ACTUATOR, RH, Y86 5430.1-03. . . . .
ROLLOVER SENSOR, N24 5430.1-03. . . . . . . . . . . . . . . . . . . . . . . . .
SEAT BELT SWITCH, DRIVER’S, S58 3234.0-02. . . . . . . . . . . . . . . .
SEAT BELT SWITCH, PASSENGER’S, S59 3234.0-02. . . . . . . . . . . SEAT CONTROL SWITCH, DRIVER’S SEAT, S51 5200.0-00. . . . .
SEAT CONTROL SWITCH, PASSENGER’S SEAT, S56 5200.0-01.
SEAT CUSHION TILT MOTOR, DRIVER’S, M50 5200.0-00. . . . . . .
SEAT CUSHION TILT MOTOR, PASSENGER’S, M61 5200.0-01. .
SEAT HEATER SWITCH, DRIVER’S SEAT, S53 5203.0-00. . . . . . .
SEAT HEATER SWITCH, PASSENGER’S SEAT, S54 5203.0-00. .
SEAT HEATER, DRIVER’S, E57 5203.0-00. . . . . . . . . . . . . . . . . . . . .
SEAT HEATER, PASSENGER’S, E58 5203.0-00. . . . . . . . . . . . . . . .
SEAT HEIGHT MOTOR, DRIVER’S, M52 5200.0-00. . . . . . . . . . . . .
SEAT HEIGHT MOTOR, PASSENGER’S, M59 5200.0-01. . . . . . . .
SEAT LUMBAR SUPPORT MOTOR/VALVE, DRIVER’S,
M55z 5200.0-02. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SEAT LUMBAR SWITCH, DRIVER’S, S52 5200.0-02. . . . . . . . . . . .
SEAT MAT, I1008 3234.0-03. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SEAT MOVEMENT MOTOR, DRIVER’S, M51 5200.0-00. . . . . . . . .
SEAT MOVEMENT MOTOR, PASSENGER’S, M60 5200.0-01. . . .
SEAT OCCUPANCY DETECTOR, A113 3234.0-03. . . . . . . . . . . . . .
SEATBACK HEATER, DRIVER’S, E56 5203.0-00. . . . . . . . . . . . . . . .
SEATBACK HEATER, PASSENGER’S, E59 5203.0-00. . . . . . . . . . .
SEATBACK RECLINER MOTOR, DRIVER’S, M53 5200.0-00. . . . .
SEATBACK RECLINER MOTOR, PASSENGER’S, M58 5200.0-01
SECONDARY AIR PUMP RELAY, K6304 1210.17-05. . . . . . . . . . . .
SECONDARY AIR PUMP RELAY, K6304 1210.20-09. . . . . . . . . . . .
SECONDARY AIR PUMP VALVE, Y6163 1210.17-05. . . . . . . . . . . .
SECONDARY AIR PUMP VALVE, Y6163 1210.20-09. . . . . . . . . . . .
SHIFT–LOCK, Y19 2460.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SIDE IMPACT SENSOR, DRIVER’S, B78 3234.0-01. . . . . . . . . . . . .
SIDE IMPACT SENSOR, PASSENGER’S, B79 3234.0-01. . . . . . . .

(PARTIAL)
X7091 X710
1
.75 BR X638
1





X6036S51
DRIVER’S SEAT,
SEAT CONTROL
SWITCH
X7131B17
RIGHT REAR
BRAKE PAD
SENSOR
2.5 BRM2
FUEL PUMP.5 BRX352
1S14
DRIVER’S DOOR
JAMB SWITCH
X13007
.5 BRX840
2.5 BR
E44
RIGHT LICENSE
PLATE LIGHT
E43
LEFT LICENSE
PLATE LIGHT
X2751 2.5 BR
2.5 BR
.75 BR





GROUND X13006
GROUND DISTRIBUTION
1 BRX400
2
E40
RIGHT REAR
INTERIOR LIGHT
2) INTERIOR
LIGHT
3) READING
LIGHT
.75 BR
X47702
1M55z
DRIVER’S SEAT
LUMBAR SUPPORT
MOTOR/VALVEX1813531.5 BR1.5 BR
0670.4-17
TELEPHONE
CONNECTOR
LUGGAGE
COMPARTMENTX1292
3
S302
CENTRAL LOCKING
SWITCH
0670.4-19
32X4771
.75 BR .75 BR .35 BR
2
3E39
LEFT REAR
INTERIOR LIGHT
2) INTERIOR
LIGHT
3) READING
LIGHT
.75 BR
3
2 3


DRIVER’S SIDE – LUMBAR SUPPORT








POWER SEATS AND LUMBAR SUPPORT
1.5 WS/RTX10018
20
3 X652FUSE DETAILS
0670.3
1 20 2 01
4X6522S52
DRIVER’S SEAT
LUMBAR SWITCH
0) OFF
1) FRONT
2) BACK
1.5 WS/BL
24 X18135
M55z
DRIVER’S SEAT
LUMBAR SUPPORT
MOTOR/VALVE
1) VALVE
2) PUMP
3) MECHANICAL
CONNECTION
1X181353
GROUND
DISTRIBUTION
0670.4
1.5 BR 1.5 BR2
3 1
P90
FRONT POWER
DISTRIBUTION BOX F40
30A





COMPONENT LOCATION CHART








COMP.8500.0 7100.0LOCATION DESCRIPTION
M35 . . DEFROSTER FLAP MOTOR . . . . . . . . . . . . . RH side of IHKA Plenum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29-2

M36 . .
FRESH AIR FLAP MOTOR . . . . . . . . . . . . . . .
below LH side of dash RH side of IHKA Plenum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29-3

M40 . . RECIRCULATION FLAP MOTOR . . . . . . . . . below LH side of dash RH side of IHKA Plenum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29-2


M43 . .

CONVERTIBLE TOP STORAGE LID LOCK
MOTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
in convertible top compartment left . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22-1


M44 . . REGULATION FLAP MOTOR . . . . . . . . . . . . . RH side of IHKA Plenum
M46 . . REAR RECIRCULATION FLAP MOTOR . . . RH side of IHKA Plenum
M50 . . DRIVER’S SEAT CUSHION TILT MOTOR . . under LH front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-3

M51 . .
DRIVER’S SEAT MOVEMENT MOTOR . . . .
under LH front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23-3

M52 . . DRIVER’S SEAT HEIGHT MOTOR . . . . . . . . under LH front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-3
M53 . . DRIVER’S SEATBACK RECLINER MOTOR under LH front seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23-3


M55z .

DRIVER’S SEAT LUMBAR SUPPORT MO-
TOR/VALVE . . . . . . . . . . . . . . . . . . . . . . . . . .
under LH front seat






M58 . .

PASSENGER’S SEATBACK RECLINER
MOTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
under RH front seat




M59 . . PASSENGER’S SEAT HEIGHT MOTOR . . . under RH front seat

M60 . .
PASSENGER’S SEAT MOVEMENT
MOTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
under RH front seat





M61 . .
PASSENGER’S SEAT CUSHION TILT
MOTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
under RH front seat






M93 . .

AUXILIARY THROTTLE POSITION MOTOR
(ADS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
front of engine compartment




M98 . . LEFT REAR WINDOW MOTOR . . . . . . . . . . . left from LH rear seat behind trim panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-2

M99 . .
RIGHT REAR WINDOW MOTOR . . . . . . . . .
RH side of RH rear seat behind trim panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22-2




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