Autodata - Diagnostic Trouble Codes Fault locations and probable causes - 2004 edition

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Model: 3 SerieslCompact (E36) 3 Series (E46) 520i (E34) 5 Series (E39) 7 Series (E38) 23 FEngine management Trouble code identification scanner 1 Fault location type - Engine control module (ECM) - data exchange not possible Engine control module (ECM) - undefined fault 00 I No fault found I - Probable cause Wiring between DLC and ECM, supply voltage, engine control relay, DLC Disconnect ECM multi-plug for at least 10 min. - check if trouble code reappears before replacing ECM 1 ( Ignition circuit, cyl. 1 - defective I Wiring, connector, ignition coil, ECM I MS42: Ignition circuit, cyl. 2 - defective ( Wiring, connector, ignition coil, ECM MS41: Ignition circuit, cyl. 2 - defective Ignition circuit, cyl. 3 - defective I MS42: lgnition circuit, cyl. 4 - defective Wiring, connector, ignition coil, ECM I Wiring, connector, ignition coil, ECM I Wiring, connector, ignition coil, ECM 3 ( MS41: Ignition circuit, cyl. 4 - defective I Wiring, connector, ignition coil, ECM 1 Ignition circuit, cyl. 5 - defective I Wiring, connector, ignition coil, ECM 5 MS42: Ignition circuit, cyl. 6 - defective MS41: Ignition circuit, cyl. 6 - defective I Injector, cyl. 6 - circuit malfunction ( MS42: Injector, cyl. 2 - circuit malfunction I Wiring, injector MS41: Injector, cyl. 2 - circuit malfunction Injector, cyl. 4 - circuit malfunction I MS42: Injector, cyl. 1 - circuit malfunction I Wiring, injector 8 I MS41: Injector, cyl. 1 - circuit malfunction I Wiring, injector 10 11 12 Mass air flow (MAF) sensorlvolume air flow (VAF) sensor - circuit malfunction AC control modulelECM communication - malfunction MS42: Engine coolant temperature (ECT) sensor - malfunction 14 MS41: Throttle position (TP) sensor - defective 16 MS42: Engine coolant temperature (ECT) sensor - malfunction MS41142: Engine coolant temperature (ECT) sensor - malfunction Evaporative emission (EVAP) pressure sensor - malfunction Vehicle speed sensor (VSS) - incorrectho signal ECMltransmission control module (TCM) communication - short to earth MS42: Intake air temperature (IAT) sensor - malfunction MS41: intake air temperature (IAT) sensor - malfunction - Wiring, connector, ignition coil, ECM Wiring, connector, ignition coil, ECM I Wiring, injector Wiring, injector Wiring, injector Wiring, connector(s), MAF sensorNAF sensor Wiring, AC control module Wiring, connector(s), ECT sensor Wiring, connector(s), ECT sensor Wiring, EVAP pressure sensor Wiring, instrument panel, VSS Wiring, connector(s), ECT sensor I Wiring, connector(s), TP sensor Wiring, ECM, TCM Wiring, connector(s), IAT sensor Wiring, connector(s), IAT sensor Wiring, AC condenser blower motor relay, AC refrigerant high pressure switch, AC refrigerant low pressure switch, AC control module

Model: 3 SerieslCompact (E36) - 3 Series (E46) 520i (E34) 5 Series (E39) 7 Series (E38) 23 Engine management I Scanner Fault location type I I --- Probable cause - 18 ECMlimmobilizer control module Wiring, immobilizer control module communication - signal MS42: Camshaft position (CMP) sensor 2 - Wiring, connector, CMP sensor circuit malfunction 19 20 2 1 22 23 24 25 27 29 MS42: Camshaft position (CMP) actuator 2 - circuit malfunction Malfunction indicator lamp (MIL) - circuit malfunction Camshaft position (CMP) actuator - malfunction MS42: Camshaft position (CMP) actuator 1 - Wiring, connector, CMP actuator circuit malfunction Injector, cyl. 3 - circuit malfunction Injector, cyl. 1 - circuit malfunction MS42: Injector, cyl. 6 - circuit matfunction MS41: Injector, cyl. 6 - circuit malfunction AC compressor clutch relay - malfunction MS42: Injector, cyl. 4 - circuit malfunction MS41: Injector, cyl. 4 - circuit malfunction MS40142: Oxygen sensor heater 1, bank 1 - circuit malfunction Idle speed control (ISC) actuatorlidle air control (IAC) valve - malfunction Ignition circuit, cyl. 2 - defective MS42: Ignition circuit, cyl. 1 - defective Wiring, connector, CMP actuator Wiring, bulb, ECM Wiring, connector, CMP actuator Wiring, injector Wiring, injector Wiring, injector Wiring, injector Wiring, AC compressor clutch relay Wiring, injector Wiring, injector 30 I MS41: Ignition circuit, cyl. 1 - defective I Wiring, connector, ignition coil, ECM 31 Ignition circuit, cyl. 4 - defective MS42: Ignition circuit, cyl. 3 - defective MS41: Ignition circuit, cyl. 3 - defective Ignition circuit, cyl. 6 - defective MS42: Ignition circuit, cyl. 5 - defective - - - -- - - Wiring, connector, engine control relay, H02S, ECM Wiring, connector(s), ISC actuatorllAC valve, ECM Wiring, connector, ignition coil, ECM Wiring, connector, ignition coil, ECM Wiring, connector, ignition coil, ECM Wiring, connector, ignition coil, ECM Wiring, connector, ignition coil, ECM Wiring, connector, ignition coil, ECM Wiring, connector, ignition coil, ECM 33 I MS41: Ignition circuit, cyl. 5 - defective I Wiring, connector, ignition coil, ECM I MS40142: Injector, cyl. 5 - circuit malfunction 1 Wiring, injector 35 Secondary air injection (AIR) pump relay - Wiring, connector, AIR pump relay 38 malfunction Clutch pedal position (CPP) switch - I malfunction I Wiring, connector, CPP switch 39 Brake pedal position (BPP) switch - circuit Wiring, connector, BPP switch malfunction 40 Brake pedal position (BPP) switchlthrottle Wiring, connector, BPP switch, TP sensor(s), ECM position (TP) sensor(s) - incorrect signal I Steering wheel multifunction switch - incorrectly coded Steering wheel multifunction switch - malfunction I Wiring, connector, steering wheel multifunction switch Wiring, spiral cable, steering wheel multifunction switch, ECM /Autodata -Eng~ne management 169

Model: 3 SerieslCompact (E36) - 3 Series (E46) 520i (E34)<br />

5 Series (E39) 7 Series (E38) 23<br />

Engine management I<br />

Scanner <strong>Fault</strong> location<br />

type I I<br />

---<br />

Probable cause<br />

-<br />

18 ECMlimmobilizer control module Wiring, immobilizer control module<br />

communication - signal<br />

MS42: Camshaft position (CMP) sensor 2 - Wiring, connector, CMP sensor<br />

circuit malfunction<br />

19<br />

20<br />

2 1<br />

22<br />

23<br />

24<br />

25<br />

27<br />

29<br />

MS42: Camshaft position (CMP) actuator 2 -<br />

circuit malfunction<br />

Malfunction indicator lamp (MIL) - circuit<br />

malfunction<br />

Camshaft position (CMP) actuator -<br />

malfunction<br />

MS42: Camshaft position (CMP) actuator 1 - Wiring, connector, CMP actuator<br />

circuit malfunction<br />

Injector, cyl. 3 - circuit malfunction<br />

Injector, cyl. 1 - circuit malfunction<br />

MS42: Injector, cyl. 6 - circuit matfunction<br />

MS41: Injector, cyl. 6 - circuit malfunction<br />

AC compressor clutch relay - malfunction<br />

MS42: Injector, cyl. 4 - circuit malfunction<br />

MS41: Injector, cyl. 4 - circuit malfunction<br />

MS40142: Oxygen sensor heater 1, bank 1 -<br />

circuit malfunction<br />

Idle speed control (ISC) actuatorlidle air control<br />

(IAC) valve - malfunction<br />

Ignition circuit, cyl. 2 - defective<br />

MS42: Ignition circuit, cyl. 1 - defective<br />

Wiring, connector, CMP actuator<br />

Wiring, bulb, ECM<br />

Wiring, connector, CMP actuator<br />

Wiring, injector<br />

Wiring, injector<br />

Wiring, injector<br />

Wiring, injector<br />

Wiring, AC compressor clutch relay<br />

Wiring, injector<br />

Wiring, injector<br />

30 I MS41: Ignition circuit, cyl. 1 - defective I Wiring, connector, ignition coil, ECM<br />

31<br />

Ignition circuit, cyl. 4 - defective<br />

MS42: Ignition circuit, cyl. 3 - defective<br />

MS41: Ignition circuit, cyl. 3 - defective<br />

Ignition circuit, cyl. 6 - defective<br />

MS42: Ignition circuit, cyl. 5 - defective<br />

-<br />

- - -- - -<br />

Wiring, connector, engine control relay, H02S, ECM<br />

Wiring, connector(s), ISC actuatorllAC valve, ECM<br />

Wiring, connector, ignition coil, ECM<br />

Wiring, connector, ignition coil, ECM<br />

Wiring, connector, ignition coil, ECM<br />

Wiring, connector, ignition coil, ECM<br />

Wiring, connector, ignition coil, ECM<br />

Wiring, connector, ignition coil, ECM<br />

Wiring, connector, ignition coil, ECM<br />

33 I MS41: Ignition circuit, cyl. 5 - defective I Wiring, connector, ignition coil, ECM<br />

I MS40142: Injector, cyl. 5 - circuit malfunction 1 Wiring, injector<br />

35<br />

Secondary air injection (AIR) pump relay - Wiring, connector, AIR pump relay<br />

38<br />

malfunction<br />

Clutch pedal position (CPP) switch -<br />

I malfunction<br />

I Wiring, connector, CPP switch<br />

39 Brake pedal position (BPP) switch - circuit Wiring, connector, BPP switch<br />

malfunction<br />

40 Brake pedal position (BPP) switchlthrottle Wiring, connector, BPP switch, TP sensor(s), ECM<br />

position (TP) sensor(s) - incorrect signal<br />

I<br />

Steering wheel multifunction switch -<br />

incorrectly coded<br />

Steering wheel multifunction switch -<br />

malfunction<br />

I<br />

Wiring, connector, steering wheel multifunction switch<br />

Wiring, spiral cable, steering wheel multifunction switch,<br />

ECM<br />

/<strong>Autodata</strong> -Eng~ne management 169

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