Autodata - Diagnostic Trouble Codes Fault locations and probable causes - 2004 edition
I Engine management Model: 316ilCompact, 318iliSICoupelCompact, 320i, 3251 (E36) 23 1,8i 518i, 520i, 525iliX (E34) 750i (E32) 850ilCSI (E31) Scanner type Fault location Probable cause 26 I Battery voltage - too low I Wiring, alternator, battery 28 Heated oxygen sensor (H02S) - circuit I Wiring, connector(s), H02S malfunction 29 Idle speed control (ISC) actuatorlidle air control Wiring, connector(s), ISC actuatorllAC valve (IAC) valve - malfunction 3 1 I Injector, cyl. 5 - circuit malfunction 1 Wiring, injector 32 I Injector(s), cyl. 2 & 4 - circuit malfunction I Wiring, injector(s) 32 Injector(s), cyl. 1, 3, 5 & 7, 9, 11 - circuit I Wiring, injector(.) malfunction 32 I Injector(s), cyl. 1 & 3 - circuit malfunction I Wiring, injector(s) 32 I Injector, cyl. 6 - circuit malfunction I Wiring, injector 33 I Injector, cyl. 4 - circuit malfunction I Wiring, injector 36 Evaporative emission (EVAP) canister purge Wiring, connector(s), EVAP canister purge valve valve - malfunction 37 I Battery voltage - too lowlhigh 1 Wiring, alternator, battery I Oxygen sensor heater relay - malfunction 1 Wiring, connector, oxygen sensor heater relay 41 42 44 45 46 46 48 50 51 51 rn 52 53 54 Engine control module (ECM)IABS control module communication, acceleration skid control (ASR) system Mass air flow (MAF) sensorlvolume air flow (VAF) sensor - incorrect signal Knock sensor (KS) 2 - defective Intake air temperature (IAT) sensor - matfunction Engine coolant temperature (ECT) sensor - malfunction AC condenser blower motor relay - short to positive Engine control module (ECM) - output stage AC compressor clutch relay - malfunction Ignition circuit, cyl. 4 - defective Transmission control module (TCM) - signal Ignition circuit, cyl. 6 - defective Closed throttle position (CTP) switch - malfunction Wiring, ABS trouble code(s) stored, ECM Wiring, connector(s), MAF sensorNAF sensor Wiring, connector, KS incorrectly tightened, KS Wiring, connector(s), IAT sensor Wiring, connector(s), ECT sensor 52 I Ignition circuit, cyl. 5 - defective I Wiring, connector, ignition coil, ECM Throttle position (TP) sensorlwide open throttle (WOT) switch - malfunction Engine control module (ECM)ltransmission control module (TCM) communication 54 0 I Battery voltage - too lowlhigh I Wiring, alternator, battery Wiring short to positive, AC condenser blower motor relay, ECM Wiring, ECM controlled components Wiring, AC compressor clutch relay Wiring, connector, ignition coil, ECM Wiring, TCM Wiring, connector, ignition coil, ECM Wiring, connector, CTP switch, ECM Wiring, TP sensor, ECM Wiring short to earth, TCM trouble code(s) stored 55 I Ignition circuit - defective I Wiring, connector, ignition coil, ECM 62 63 Engine control module (ECM) - electronic throttle system (ETS) signal Torque converter clutch (TCC) solenoid - defective Wiring short to positive, ignore flash code if terminal 62 not connected Wiring, TCC solenoid 64 Engine control module (ECM)ltransmission control Wiring, TCM trouble code(s) stored, ECM, TCM module (TCM) communication - short to earth
Model 316ilCornpact, 318iliSICoupelCornpact, 320i, 3251 (E36) 23 1,8i 518i, 520i, 525iliX (E34) 750i (E32) 850ilCSI (E31) BMW P Engine management Scanner type 67 70 73 76 77 78 Fault location Crankshaft position (CKP) sensorlengine speed (RPM) sensor - incorrectho signal Heated oxygen sensor (H02S) - circuit malfunction Vehicle speed sensor (VSS) - incorrectho signal Mixture adjustment resistor - signal too lowlhigh Intake air temperature (IAT) sensor - malfunction Engine coolant temperature (ECT) sensor - malfunction Engine control module (ECM)limmobilizer control module communication - malfunction Engine control module (ECM)lalarm system control module communication - alarm system active Engine control module (ECM)IABS control module communication, traction control system (TCS) Engine control module (ECM), electronic throttle system (ETS) - overrun torque control Throttle control, traction control system (TCS) - defective Engine control module (ECM) - acceleration skid control (ASR) defective Air conditioning (AC) control modulelengine control module (ECM) communication - malfunction Engine control module (ECM) - output stage Engine control module (ECM) - defective Heated oxygen sensor (H02S) - range1 performance problem Engine control module (ECM) - internal fault Ignition circuit - primary circuit Engine control module (ECM) - acceleration skid control (ASR)loverrun torque control defective Knock control circuit - defective Knock control circuit - rangelperformance problem Engine control module (ECM) - immobilizer active Engine control module (ECM) - engine cannot be started Probable cause Wiring, CKP sensorlRPM sensor Wiring, connector(s), H02S Wiring, instrument panel, VSS Wiring, mass air flow (MAF) sensor Wiring, connector(s), IAT sensor Wiring, connector(s), ECT sensor Wiring, electrical interference, immobilizer control module, ECM Wiring short to positive, alarm system control module Wiring, ABS trouble code(s) stored, ECM Wiring short to positive, ECM Wiring, connector(s), throttle control system Wiring short to positive, ECM Wiring, AC control module Wiring, ECM controlled components Disconnect ECM multi-plug for at least 10 min. - check if trouble code reappears before replacing ECM Wiring, intakelexhaust leak, fuel level low, fuel pressure, evaporative emission (EVAP) canister purge valve, injector(s), H02S, ECM Disconnect ECM multi-plug for at least 10 min. - check if trouble code reappears before replacing ECM Wiring, ignition coil(s) Wiring, trouble code(s) stored in other system(s) Wiring, connector, knock sensor (KS), ECM Wiring, connector, KS incorrectly tightened, knock sensor (KS) lncorrecffdamaged key, incorrectly coded, ECMlimmobilizer replacement without coding, wiring, immobilizer defective Wiring, engine speed (RPM) sensor, mass air flow (MAF) sensorlvolume air flow (VAF) sensor, fuel pump relay, ignition system, injector(s), fuel pressure, throttle control system Motronic MI .711.7.2/1.7.3/3.1 Motronic MI .2 Motronic MI .7.3 rn Motronic M3.1 Motronic MI .7.2/1.7.3 Motronic MI .7, V12 /Autodata I Eng~ne management 163
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I Engine management<br />
Model: 316ilCompact, 318iliSICoupelCompact, 320i, 3251 (E36) 23 1,8i<br />
518i, 520i, 525iliX (E34) 750i (E32) 850ilCSI (E31)<br />
Scanner<br />
type<br />
<strong>Fault</strong> location<br />
Probable cause<br />
26 I Battery voltage - too low I Wiring, alternator, battery<br />
28 Heated oxygen sensor (H02S) - circuit I Wiring, connector(s), H02S<br />
malfunction<br />
29 Idle speed control (ISC) actuatorlidle air control Wiring, connector(s), ISC actuatorllAC valve<br />
(IAC) valve - malfunction<br />
3 1 I Injector, cyl. 5 - circuit malfunction 1 Wiring, injector<br />
32 I Injector(s), cyl. 2 & 4 - circuit malfunction I Wiring, injector(s)<br />
32 Injector(s), cyl. 1, 3, 5 & 7, 9, 11 - circuit I Wiring, injector(.)<br />
malfunction<br />
32 I Injector(s), cyl. 1 & 3 - circuit malfunction I Wiring, injector(s)<br />
32 I Injector, cyl. 6 - circuit malfunction I Wiring, injector<br />
33 I Injector, cyl. 4 - circuit malfunction I Wiring, injector<br />
36 Evaporative emission (EVAP) canister purge Wiring, connector(s), EVAP canister purge valve<br />
valve - malfunction<br />
37 I Battery voltage - too lowlhigh 1 Wiring, alternator, battery<br />
I Oxygen sensor heater relay - malfunction 1 Wiring, connector, oxygen sensor heater relay<br />
41<br />
42<br />
44<br />
45<br />
46<br />
46<br />
48<br />
50<br />
51<br />
51 rn<br />
52<br />
53<br />
54<br />
Engine control module (ECM)IABS control module<br />
communication, acceleration skid control (ASR)<br />
system<br />
Mass air flow (MAF) sensorlvolume air flow (VAF)<br />
sensor - incorrect signal<br />
Knock sensor (KS) 2 - defective<br />
Intake air temperature (IAT) sensor - matfunction<br />
Engine coolant temperature (ECT) sensor -<br />
malfunction<br />
AC condenser blower motor relay - short to<br />
positive<br />
Engine control module (ECM) - output stage<br />
AC compressor clutch relay - malfunction<br />
Ignition circuit, cyl. 4 - defective<br />
Transmission control module (TCM) - signal<br />
Ignition circuit, cyl. 6 - defective<br />
Closed throttle position (CTP) switch - malfunction<br />
Wiring, ABS trouble code(s) stored, ECM<br />
Wiring, connector(s), MAF sensorNAF sensor<br />
Wiring, connector, KS incorrectly tightened, KS<br />
Wiring, connector(s), IAT sensor<br />
Wiring, connector(s), ECT sensor<br />
52 I Ignition circuit, cyl. 5 - defective I Wiring, connector, ignition coil, ECM<br />
Throttle position (TP) sensorlwide open throttle<br />
(WOT) switch - malfunction<br />
Engine control module (ECM)ltransmission control<br />
module (TCM) communication<br />
54 0 I Battery voltage - too lowlhigh I Wiring, alternator, battery<br />
Wiring short to positive, AC condenser blower motor<br />
relay, ECM<br />
Wiring, ECM controlled components<br />
Wiring, AC compressor clutch relay<br />
Wiring, connector, ignition coil, ECM<br />
Wiring, TCM<br />
Wiring, connector, ignition coil, ECM<br />
Wiring, connector, CTP switch, ECM<br />
Wiring, TP sensor, ECM<br />
Wiring short to earth, TCM trouble code(s) stored<br />
55 I Ignition circuit - defective I Wiring, connector, ignition coil, ECM<br />
62<br />
63<br />
Engine control module (ECM) - electronic throttle<br />
system (ETS) signal<br />
Torque converter clutch (TCC) solenoid -<br />
defective<br />
Wiring short to positive, ignore flash code if terminal 62<br />
not connected<br />
Wiring, TCC solenoid<br />
64 Engine control module (ECM)ltransmission control Wiring, TCM trouble code(s) stored, ECM, TCM<br />
module (TCM) communication - short to earth
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