2001 BMW 540i manual transmission

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OBD On-Board Diagnostics
I I
General ........................... OBD-1 Diaqnostic Trouble Codes (DTCs) . . OBD-9
On-Board Diagnostics (OBD I!) ..... OBD-I
Malfunction Indicator Light (MIL)
........ OBD-2
Scan tools and scan tool display.
........ OBD-3
Diagnostic monitors
.................. OED-4
Drive cycle
......................... OED-6
Readiness codes
.................... OBD-6
Diagnostic trouble codes
(DTCs) ........ OBD-7
-
Automatic transmission diagnostic
trouble codes
....................... OBD-9
Engine diagnostic trouble
codes: M52 engine.
................. OED-13
Engine diagnostic trouble
codes: M54 engine.
................. OBD-17
Engine diagnostic trouble
codes: M62 engine.
................. OBD-24
This chapter outlines the fundamentals and equipment
requirements of On-Board Diagnostics
I1 (OBD 11) standards
as they apply to BMW vehicles. Also covered here is a listing
of BMW and OBD
I1 diagnostic trouble codes (DTCs).
ON-BOARD DIAGNOSTICS (QBD !I)
OBD II standards were developed by the SAE (Society of
Automotive Engineers) and CARB (California Air Resources
Board).
OED I1 is the second generation of on-board self-
diagnostic equipment requirements. These standards were
originally mandated for California vehicles. Since
1996 they
have been applied
toall passengervehicles sold in the United
States.
On-board diagnostic capabilities are incorporated into the
hardware and soflwareof the enginecontrol module
(ECM) to
monitor virtually every component that can affect vehicle
emissions. The
OED I1 system works to ensure that
emissions remain as clean as possible over the life of the
vehicle.
Each emission-influencing component is checked by a
diagnostic routine (called a monitor) to verify that it is
functioning properly.
If a problem or malfunction is detected,
the
diagnostic executive built into the OBD I1 system
illuminates a malfunction indicator light (MIL) on the
instrument panel.
The OBD
I1 system also stores diagnostic trouble codes
(DTCs) about the detected malfunction in the ECM so that a
repair technician can accurately find and fix the problem.

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OED-2
On-Board Diagnostics
Specialized OED II scan tool equipment is needed to access
the fault memory and
OED I1 data.
The extra hardware needed to operate the OED
I1 system
consists mainly of the following:
* Additional oxygen sensors downstream of the catalytic
converters.
Fuel tank pressure sensor and device to pressurize
fuel
storage system.
Several engine and performance monitoring devices
Standardized 16-pin
OED II connector under the
dashboard.
Upgraded components for the federally required reliability
mandate.
Malfunction indicator light (MIL)
OED II software illuminates the malfunction indicator light
(MIL) when emission levels exceed 1.5 times Federal
standards.
4 For E34 cars covered by this manual, three different MIL
symbols were used, depending on year and model.
MIL illuminates under the following conditions:
Engine management system fault detected for
two
consecutive OED iI drive cycles. See Drive cycle in this
repair group.
- Catalyst damaging fault detected.
Component malfunction causes emissions to exceed 1.5
times OED
II standards.
Manufacturer-defined specifications exceeded. Implausible input signal.
Misfire
faults.
Leak in evaporative system,
Oxygen sensors observe no purge
flow from purge valve 1
evaporative system.
ECM fails to enter closed-loop operation within specified
time.
ECM or automatic transmission control
module (TCM) in
"limp home" mode.
ignition key ON before cranking (bulb
check function).
OED
II fault memory (including the MIL) can only be reset
using a special scan tool. Removing the connector from the
ECM or disconnecting the battery does not erase the fault
memory.

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OBD-8
I On-Board Diagnostics
DTC digit interpretation
1st digit
P powertrain
B body
C chassis
2nd digit
0 SAE
1 BMW
3rd digit
0
1
2
3
4
5
6
7
4th - 5th digits total
system
airlfuei induction
fuel injection
ignition system or misfire
auxiliary emission control
vehicle speed
& idle control
ECM
inputs/outputs
transmission
individual circuits or
components
DTC example: P 0 3 0 6
P: A powertrain problem
0: SAE sanctioned or 'generic'
a 3: Related to an ignition system / misfire
06 Misfire detected at cylinder #6
DTCs provide a freeze frame or snap-shot of a vehicle
performance or emissions fault at the moment that the fault
first occurs. This information is accessible through generic
OED I1 scan tools.
Freeze frame data contains, but is not limited to, the following
information:
Engine load (calculated)
Engine rpm
Short and
long term fuel trim
Vehicle speed
Coolant temperature Intake manifold pressure
Open/closed loop operation
Fuel pressure (if available)
DTC

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On-Board Diagnostics
DIAGNOSTIC TROUBLE CODES
(DTCs)
Below is a listing of E39 powertrain (automatic transmission
and engine)
SAE P-codes, the corresponding BMW fault
codes, and the fault code definitions.
BMW fault codes expand on the SAE sanctioned DTCs and
are accessible primarily through the BMW diagnostic scan
tool or a BMW-specific scan tool.
l~utomatic transmission diagnostic trouble codes
P-code
IBMW-FC I DTC Definition
Ip0560 196 ISystem Voltage I
IPO~OO I129 l~eriai Communication Link I
1~0715 116 I InpuVTurbine Speed Sensor 'A' Circuit I
PO600
PO601
PO603
PO606
PO705
PO705
PO709
144
80
81
82
8
60
60
PO71 5
PO71 6
PO717
PO720
PO720
PO720
I I
PO721 159 loutput Speed Sensor Circuit RangeIPerformance I
Serial Communication Link
Internal Control Module Memory Check Sum Error
Internal Control Module Keep Alive Memory (KAM) Error
ECMIPCM Processor
Transmission Range Sensor 'A' Circuit Maliunction (PRNDL Input)
Transmission Range Sensor
'A' Circuit Malfunction (PRNDL input)
Transmission Range Sensor
'A' Circuit Intermittent
I I'
1~0722 132 IOutput Speed Sensor Circuit No Signal I
33
33
33
32
42
59
PO720
I I
PO727 1150 I Engine Speed Input Circuit No Signal
InpuVTurbine Speed Sensor 'A' Circuit
inpuVTurbine Speed Sensor 'A' Circuit RangeiPerformance
InpuVTurbine Speed Sensor 'A' Circuit No Signal
Output Speed Sensor Circuit
Output Speed Sensor Circuit
Out~ut Speed Sensor Circuit
PO720 1106 /output Speed Sensor Circuit
62
Output Speed Sensor Circuit
PO730
PO730
PO731
PO731
PO731 I I
100
102
50
51
100
PO731
incorrect Gear Ratio
Incorrect Gear Ratio
Gear 1 incorrect Ratio
Gear 1 incorrect Ratio
Gear 1 Incorrect Ratio
PO732 152 /Gear 2 Incorrect Ratio
131
Gear
1 Incorrect Ratio

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On-Board Diagnostics
l~utornatic transmission diagnostic trouble codes (continued) -
P-code /BMW-FC I DTC Definition - PO732
PO732
PO733
PO733
PO733
PO733
PO734 -
I I
I I
PO742 / 48 l~orque Converter Clutch Circuit Stuck On
PO734
100
132
53
57 122
133
54
PO735
PO735
PO735
PO740
PO740
PO740
PO741
I I
PO743 14 l~or~ue Converter Clutch Circuit Electrical
Gear
2 Incorrect Ratio
Gear 2 Incorrect Ratio
Gear 3 incorrect Ratio
Gear 3 Incorrect Ratio
Gear 3 Incorrect Ratio
Gear 3 Incorrect Ratio
Gear 4 Incorrect Ratio
Gear
4 Incorrect Rat10 PO734
I I
PO743 132 l~or~ue Converter Clutch Circuit Electrical
PO734 1134 IGear 4 Incorrect Ratio
123
55 101
135
4
48 111
48 Gear 5 Incorrect Ratio
Gear 5
Incorrect Ratio
Gear 5 Incorrect Ratio
Torque Converter Clutch
Circuitlopen
Torque Converter Clutch Circuitlopen
Torque Converter Clutch Circuitlopen
Torque Converter Clutch Circuit Performance or Stuclc Off
PO745
PO748
PO748
PO750
PO751
PO751
I I
PO755 117 IShift Solenoid '8' I
PO752
PO753
PO753
PO756 117 I~hift Solenoid '8' Performance or Stuck Off I
1
1
5
16
6 16 Pressure Control Solenoid 'A'
Pressure Control Solenoid 'A' Electrical
Pressure Control Solenoid
'A' Electrical
Shift Solenoid
'A'
Shift Solenoid 'A' Performance or Stuck Off
Shift Solenoid
'A' Performance or Stuck Off
16
16
30 Shift
Solenoid
'A' Stuck On
Shift Solenoid 'A' Electrical
Shift Solenoid
'A' Electrical
PO757
PO758
PO758
PO760
PO761
17
17
33 18
18 Shift
Solenoid '8' Stuclc On
Shift Solenoid
'8' Electrical
Shift Solenoid
'8' Electrical
Shift Solenoid
'C'
Shift Solenoid 'C' Performance or Stuclc Off

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OBD-11
On-Board Diagnostics
Automatic transmission diagnostic trouble codes (continued)
P-code
PO762
PO763
PO763
PO763
PO775
PO782
PO783 I I
PO795
PO798
PO962
PO963
PO966
PO967
PO970
PO971
BMW-FC
18
2 18
32
2
57
58
I I -
DTC Definition
Shift Solenoid 'C' Stuck On
Shift Solenoid
'C' Electrical
Shift Solenoid
'C' Electrical
Shift Solenoid
'C' Electrical
Pressure Control Solenoid
'B'
2-3 Shift
3-4 Shift
PO778 12 I Pressure Control Solenoid 'B' Electrical
3
3
1
1
2
2
3
3
PO973
PO979
PI 700
PI719
PI720
Pi731
PI732
PI734
Pressure Control Solenoid 'C'
Pressure Control Solenoid
'C' Electrical
Pressure Control Solenoid
'A' Control Circuit Low
Pressure Control Solenoid 'A' Control Circuit High
Pressure Control Solenoid
'6' Control Circuit Low
Pressure Control Solenoid
'0' Control Circuit High
Pressure Control Solenoid 'C' Control Circuit Low
Pressure Control Solenoid 'C' Control Circuit
High
PI734
PI738
Pi738
PO976 117 IShift Solenoid 'B' Control Circuit Low
16
18
62 144
129
51
65
1
PI743
PI743
PI743
PI746
PI746 - Pi747
Shift Solenoid 'A' Control Circuit Low
Shift Solenoid 'C' Control Circuit Low
Double Error Output Speed and
inputflurbine Speed
CAN Version Error
CAN
Timeout Control Module
Gear
1 manual Incorrect Ratio
Gear Monitoring 4 at Electrical Substitute Program
Pressure
Control Solenoid 'B' Eieclrical
2
3
29
PI747
PI747
Pressure Control Solenoid 'B' Electrical
Pressure Control Solenoid
'C' Electrical
Pressure Control Solenoid
'C' Electrical
4
5
51
83 104 Pressure Control Solenoid
'E' Electrical (M44lM52: Brake
Band Electrical)
Pressure Control Solenoid
'E' Electrical (M44lM52: Bralte Band Electrical)
Pressure Control Solenoid
'E' Electrical (M44lM52: Brake Band Electrical)
Transmission Control Module Output Stage
Transmission Control Module Output Stage
129 128 CAN-Bus Monitoring CAN-Bus Monitoring
144 CAN-Bus Monitoring

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OBD-12
On-Board Diagnostics
Automatic transmission diagnostic trouble codes (continued)
P-code
PI747
PI747
PI 747
PI748
PI748 I I
PI748
PI748
PI748
PI 748
PI 749
PI 750
P1750
PI761
PI761
BMW-FC
150
151
156
15
80
-- PI762
PI763
PI764
PI765
PI765
PI765
P1770
DTC Definition
CAN-BUS Monitoring
CAN-Bus Monitoring
CAN-Bus Monitoring
Transmission Control Module Self-Test
Transmission
Control Module Self-Test
PI748 182 l~ransmission Control Module Self-Test
81
103
105
110
I I
Transmission Control Module Self-Test
Transmission Control Module Self-Test
Transmission Control Module Self-Test
Transmission Control Module Self-Test
19
19
19
147
154
158
146
PI 790
PI791
P1792
PI 794
PI 801
P1802
PI 803
PI 831 Shiftiock Solenoid High input
Shiftlock Solenoid
Low Input
Shiftlock Solenoid Open Circuit
CAN Throttle Valve
CAN Throttle Valve
CAN Throttle Valve
CAN
Torpue Interlace
CAN Torque Reduction
PI 780
I I -
108
54
96
2 19
PI 780 1163 ICAN Torque Reduction
152
80
81
82
80
16
17 18
1 Secondary Pressure Solenoid Communication Error
(M52: Internal
Transmission Control Module Memory Error)
Secondary Pressure Solenoid Circuit
Rangelperformance (System Voltage Input Low)
Secondary Pressure Solenoid Circuit
RangeIPerformance (System Voltage Input Low)
Shiftioclc Solenoid
Shiftiocic Solenoid
internal Transmission Control Module Memory ChecksumlEPROM Error
internal Transmission Control Module Memory
ChecksumIEEPROM Error
internal Transmission Control Module Watchdog Error
internal Transmission Control Module Memory Checksum Error
Shift Solenoid
'A' Low Input
Shift Solenoid
'8' Low Input
Shift Solenoid
'C' Low input
Pressure Control Solenoid
'A' Circuit High
Pressure Control Solenoid 'B' Circuit High
PI832
PI833 13 IPressure Control Solenoid 'C' Circuit High
2

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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