1998 BMW 540i Transmission position sensor

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130-1 3
Fuel Injection I
< Unplug harness connector (arrow) from sensor.
CAUTION-
Be sure ignition is OFF before disconnecting or reconnecting
DME system components.
NOTE-
Do not confuse the throttle position sensor on the main Nirot-
tle body with the throttle position switch on the secondary
throttle body, where applicable.
- Remove two mounting screws holding sensor to throttle
housing.
- Installation is reverse of removal. Clear adaptation settings
from ECM using BMW-compatible scan tool.
NOTE-
Poor idle quality may be noticeable for a period if the adapta-
tion settings are not cleared after installing new TPS.
ldle speed control valve,
checking and replacing
The idle speed control valve regulates idle speed by redirect-
inq airaround the throttlevalve.The idlespeed control valve is
mounted on the underside of the intake manifold adjacent to
the dipstick tube bracket. Accessing the valve is best accom-
plished by first removing the air filter housing and the throttle
body assembly.
The valve issupplied with
batteryvoltagefrom the ECM relay.
The idle speed control valve incorporates a two-coil rotary ac-
tuator. The ground sides of each coil are pulsed
sirnulta-
neously by the ECM. The duty cycle of each circuit is varied to
achieve the required idle speed.
Afaulty ldle speed control valve sets afault code and the MIL
is illuminated when
OED II fault criteria are exceeded.
Before checking the idle speed control valve, confirm that the
throttle position sensor is working correctly.
- With engine running, check that idle speed control valve is
buzzing.
- Turn on AIC system or shift transmission into drive. ldle
should remain steady or increase slightly.

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130-38
Fuel Injection
Throttle cable, adjusting
(MS 42.0)
The throttle assembly on MS 42.0 cars uses a throttle cable.
The cable should be adjusted any time it is disconnected or
replaced. This procedure requires the factory scan tool or an
equivalent to read and adjust throttle angle. It is recommend-
ed the procedure be done by an authorized
BMW dealer ser-
vice department
Basic adjustment:
Ensure that at idle (accelerator pedal in rest position) throt-
tle cable has detectable play at throttle lever attaching
point. Play must not exceed maximum allowable.
Adjust by turning knurled adjuster
(arrow) on end of throt-
tle cable sheath at throttle housing.
NOTE-
Faulty throttle adjustment values must be reset using the
BMW service tester
DISplus, MoDiC, GTI or equivalent.
Max.
play at throttle plate lever
ldle speed control valve,
checking and replacing
3 mm (0.125 in)
The Idle speed control valve regulates Idle speed by red~rect-
ing air around the throttle valve. The ldle speed control valve
is mounted
d~rectly above the throttle housing. Accessing the
valve is best accomplished by
flrst removing the air fllter
housing and associated ducting.
Thevalve is supplied with batteryvoltage from the ECM relay.
The idle speed control valve incorporates a two-coil rotary ac-
tuator. The ground sides of each coil are pulsed simulta-
neously by the ECM. The duty cycle of each circuit is varied to
achieve the required idle speed.
A faulty idle speed control valve sets a fault code and the MIL
is illuminated when
OED II fault criteria are exceeded.
Before checking the idle speed control valve, confirm that the
throttle position sensor is working correctly.
- With engine running, check that idle speed control valve is
buzzing.
- Turn on AIC system or shift transmission into drive. ldle
should remain steady or increase slightly.
- If idle speed valve is not buzzing, or if idle decreases when
AIC is turned on, stop engine and disconnect harness con-
nector from idle speed valve.

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-. -
Fuel Injection
I 68 1 / Not used
Table
d. Bosch
M5.2 ECM pin assignments
I I I
69 1 input I AIC system standby signal (> 10 V) 1 Heating and AIC control module
Pin
57
58
59
60
61
62
63
64
65 66
67
Type
input
input
input
input
I 70
72
73
74
Componentlfunction
Not used
Not used
Heated thermostat (characteristic map, cooling)
Programming voltage input (voltage
value)
Signal input Evaporative emission valve
Not used
Fuel pump relay (ground)
Not used
Not used
Not used
Not used
75
76
77
78
79
80
Note
Characteristic map, cooling
Data
llnlc connector
Evaporative emission valve
Fuel pump relay
71 1 ground I Control module ground I Ground splice
input
input
81
input input
input
input
output Not used
I
Knock sensor signal
Not used
Not used
Coolant temperature
82 1 I Not used
83
I I
Knock sensor
Dual temperature
swltch
Not used
Heated oxygen sensor signal (voltage
0.1-1.0 V)
Heated oxygen sensor
signal (voltage 0.1-1.0 V)
Crankshaft position sensor signal (speed and
position, AC voltage)
Right rear wheel speed signal
TD signal (engine speed)
85
I I I
Heated oxygen sensor II behind catalytic converter
Heated oxygen sensor
I behind catalytic converter
Cranitshaft positionlrpm sensor
ABSIASC control module
TD signal splice
84 1 / Not used 1
output
88
86
1 input-output 1 CAN-Bus high I Transmission conlrol module (AGS)
input-output
Injection signal
input-output Integrated instrument cluster control
module (IKE)
CAN-Bus low Transmission control module (AGS)
Data
linlc TxD Data link connector

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260-1 0
/ Driveshaft
Driveshaft, installing
- Prepare CV joint for reinstallation:
Extend joint to limit.
Clean off old grease and fill with fresh grease
Install new seal.
- Bend driveshaft slightly at center universal joint to install
CAUTION-
Do not allow CVjoint seal to become displaced.
- Align matchmarlts on driveshaft to matchmarks on final drive
and transmission flanges.
- Fit constant velocity joint to final drive input flange. Alternate-
ly tighten two opposite nuts to draw constant velocity joint
evenly into the final drive input flange. Once seated, tighten
down remaining nuts.
I CAUTION-
I Do not reuse self-locking nuts. These nuts are designed to be /
I used onlv once. 1
- Insert bolts in front of driveshafl to transmission output
flange. Counterhold each bolt while tightening nut.
CAUTION-
. Do not reuse self-locking nuts. These nuts are designed to
be used only once.
Avoid stressing the flex-disc when torquing the bolts.
Do this by counterholding the bolts and turning the nuts
on the flange side.
- Position center support bearing and install mounting nuts.
Use new self-locking nuts.
- Install heat shields.
- Install rear transmission support crossmember.
- Install exhaust system. See 180 Exhaust System.
Reconnect oxygen sensor wiring harnesses and reattach
wiring harness retainers to rear transmission support
crossrnernber.

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Central Locking and Anii-Theft
- If the starter engages, the following EWS inputs are function-
ing normally:
Ignition key
Code function
Transmission range switch or clutch position switch
Engine speed sensor
NO JE -
If a vehicle key is lost or stolen, the electronic authorization
for that key
can be cancelled using the BMW scan and di-
agnostic tools
DISplus, GTl or MoDiC.
Force applied to a ley can damage the electronic circuitry
in the key A damaged ley will not start the engine. In that
case, a new key should be purchased and initialized
by an
authorized BMW dealer.
EWS variations
EWS variations used in E39 cars are shown in E39 EWS ap-
plications
table below.
E39
EWS applications
I I Ifling antenna (surrounds ignition switch) I
System
designation
EWS
II
I I l~ransmitter I receiver module located in right side steering column cover I
E39 production
dates
SOP
- 311 997
I I IEWS 111 (3.2) control module incorporates transmitter1 receiver moduie functions /
Main components, changes, improvements
Key with EEPROM transponder
Control moduie located behind glove compartment, in electrical component panel
Control module located to left of steering column, under dashboard
K-Bus input
Transmitter
I receiver module eliminated
EWS 111 (3.2)
Transmission range selection input from automatic transmission control module
3
11997 - 911997
- EWS ill (3.3) Clutch
Hall-effect switch (replaces transmission range switch input)
911997 - 2002 EWS 111 (3.3) control
module with iSN code burned in (cannot be overwritten during
alignment)
Control module located to left of steering column, under dashboard

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On-Board Diagnostics
l~utomatic transmission diagnostic trouble codes (continued)
P-code
1 Pi844
I I
14 /Pressure Control Solenoid 'D' Circuit Low
I I PI841 11 /Pressure Control Solenoid 'A' Circuit Low
BMW-FC
Pi842
I
P2722 15 I Pressure Control Solenoid 'E' I
DTC
Definition
Pi 845
Pi 882
Pi 883
PI 889
PI891
PI 892
PI 893
Pi 843 3 8
2 Pressure Control Solenoid '0' Circuit Low
5
57
58
96
96
96
83
P2729
P2730
P2759
P2761
P2763
P2764
Pressure Control Solenoid 'E' Circuit Low
2-3 Shift Circuit High
3-4 Shift Circuit High
System Voltage
- Electrical
System Voltage High Input
System Voltage Low Input
SUDP~V Voltaqe Pressure Control SoienoidIShift Solenoid Circuit High
~~ ~~ ~ Engine diagnostic trouble codes: M52 engine
5
5
4
4
4
4
I I
Pressure Control Solenoid 'E' Control Circuit Low
Pressure Control Solenoid
'E' Control Circuit High
Torque Converter Clutch Pressure Control
Solenoid Control Circuit Electrical
Torque Converter Clutch Pressure Control Solenoid Control
Circuitlopen
Torque Converter Clutch Pressure Control Solenoid Control Circuit High
Torque Converter Clutch Pressure Control Solenoid Control Circuit Low
DTC Definition
Mass or Volume Air
Flow Circuit RangeIPerformance
lntalte Air Temperature Sensor 1 Circuit Rangelperformance
Engine Coolant Temperature Circuit RangeIPerformance
ThrottieIPedai Position SensorISwitch 'A' Circuit
ThrottleIPedai Position SensorISwitch 'A' Circuit
P-code
PO1
01
PO1 11
PO116
PO120
PO120
PO1 20 BMW-FC
8 14
10
112
113
POI 20 1173 /~hrottie/~edal Position SensorISwitch 'A' Circuit
118
ThrottieIPedai Position SensorISwitch 'A' Circuit

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Gaskets and seals 01
0-9
Gearshift automatic transmission
adjusting
250-7
shift interiock. checkino function " 250-9
shiftloclc. checicino function 250-8 - manual transmission
gearshift lever, removingiinstalling
250-5
steptronic 250-7
General module (GM Ill)
600-8
see also Central locking
Generator see Battery, starter, alternator
Glass see Door window
Glove compartment
513-16
see also
Global positioning system
(GPS)
620-9
Grill
see Exterior trim
Grounds
100-5
Guide link
see Rear suspension, suspension
arms
Halogen headlight
630-5
Hand brake
see Brakes, pariring brake
Handle, door
see Door
locks
Hatch seeTailgate
Hazard warning switch
see Switches Headlight
housing trim
see Exterior trim
washer611-17 see also Lights
Headlight spray
nozzle
611-17
Headlight switch
see Switches
Heater core
see Heating
Heater valve
see Heating
Heating lieater core, replacing
640-18
lheater core temperature sensor,
removingiinstalling
640-12 heater valve, replacing 640-17
IHKA housing, removinglinstallin~
640-21
see also NC
Hood
410-6
Hood latch and release
410-10
Hydraulic valve lifters
see Cylinder head and valvetrain
IAT
(lntalce air temperature) sensor
see 130
under appropriate fuel
injection system
idle speed control valve
see 130
under appropriate fuel injection system
Idle stabilizer
see 130
under appropriate fuel
injection system, idie speed controi
valve
idler arm
320-30
lgnition coll
see lgnition system
lgnition interlock
320-13
lgnition lock cylinder
removingiinstalling
320-1 1. 612-4
lgnition switch
seeSwifches
Ignition system
diagnosis checking for
spark 120-10
disabling ignition system 120-10 misfire detection 120-6
oscilioscope diagrams 120.6
troubleshooting 120-6
camshaft position sensors 120-14 coils 120.10
crankshaft speed sensor 120-12 firing order 120-9
knoclc sensors 120-16
IHKA
see NC
IHKR see NC
Injector
see 130 under appropriate
fuel
injection system, luel injector
Input shaft
oil seal
see Manual transmission, oil seals
Inspection
see Maintenance
Instruments GPS see Global positioning system
(GPSI layout 6202
removingiinstalling 620-8 self-testing 620-6
Intake air temperature sensor (IAT)
see 130 under appropriate fuel
injection system
Intake manifold
removingiinstalling
6-cvlinder enoine 110-10. 113-8. 113-22 -
V-8 engine (M62) 113-56
Integral link
see Rear suspension, suspension
arms
lnterior lights
see Lights
lnterior protection
(FISIUIS) 515-25
lnterior trim
513-13
lnterior ventilation microfilter see
NC, ventilation microfiller

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Manual transmission
applications 200-2. 230-5
back-up light switch, replacing 230-6
gear ratios 230-6
gearshift
see Gearshiit
ID tag 200-2
fluid 020-1 0. 200-4 fluid service 230-6
oil seals
input shaft seal, replacing
230-17
output shalt seal, replacing 230-1 1
selector
shaft seal, replacing 230-8 pilot bearing 210-16
removallinstallation 230-19
see also Maintenance
Map light
see Lights, interior
Mass air flow
(MAF) sensor
see 130 under appropriate fuel
injection syslem
Master cylinder
see Brakes
see also Clutch, hydraulics
MDK
130-42
Microfilter see
NC, ventilation microfilter
see also Maintenance
Mirror see Exterior trim
Misfire see Ignition syslem, diagnosis
Motor mount
see Engine,
mounl
MRS (multiple restraint system)
see Airbag system (SRS)
Muffler
see Exhaust syslem
Neutral safety switch
see Automatic transmission, range
switch
OED II (on-board diagnostics)
OED-l
Oil change equipment 010-16
Oil level sensor
see Lubrication system
Oil pan
see Lubrication system
OH pressure
see Lubrication system
Oil pump
see Lubrication system
Oil service 020-1 1
On-Board Monitor
640-12
On-board diagnostics OED-1
Outside air temperature sensor
610-14
Outside door handle
see Door
loclc
Outside mirror switch
see Switches
Output
shaft oil seal
see Manual transmission, oil seals
Overheating
see Cooling system, troubleshooting
Overload protection
600-11
Oxygen sensors
130-72, 180-8
P codes OED-10
Panic mode operation
515-11
Parking brake
see Brakes
see also Maintenance
Parts, buying
010-11
Pedal cluster switches
see Switches
Pedal position sensor (PWG)
6-cvlinder
enqine
V-8 engine (M62 TU) 130-68
Pitman arm
see Steering
Power steering
see Steering
Power steering
fluid
see Maintenance
Power window switch
512-3 see also Switches
PWG see Pedal position sensor
(PWG)
Racic and pinion steering
see Steering
Radiator see Cooling system
Radiator cooling fan seeCooling system, cooling fan
see also Cooling system, electric fan
Radiator grill
see Exterior
trim
Radio
650-2 see also Antenna
see also Speakers
Rain sensor
611-6
Raising car safely
010-5
Readiness codes
OED-6
Rear door window
see Door window
Rear main seal
see Crankshalt oil seals
Rear parcel
sheif
513-16