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Trouble Godes - diagramas.diagram...

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I Engine management<br />

<strong>Trouble</strong> code identification<br />

NOTE: V12: Nash types lxxx for RH bank, 2xxx LH bank.<br />

Flash type<br />

Fault location<br />

Model: 316ilCompact, 318iliSICoupelCompact, 320i, 3251 (E36) 23 1,8i<br />

518i, 520i, 525iliX (E34) 750i (E32) 850ilCSI (E31)<br />

Probable cause<br />

0000<br />

1000<br />

I End of trouble code output<br />

I End of trouble code output<br />

I Engine mntrol module (ECM) - defective Disconnect ECM multi-plug for at least 10 min. - check if<br />

trouble code reappears before replacing ECM<br />

Mass air flow (MAF) sensorlvolume air flow (VAF)<br />

sensor - incorrect signal<br />

Wiring, connector(s), MAF sensorNAF sensor<br />

1216 I Throttle position (TP) sensor - defective Wiring, connector(s), TP sensor<br />

1218 I Engine control module (ECM) - output stage Wiring, ECM controlled components<br />

Heated oxygen sensor (H02S) - circuit<br />

malfunction<br />

Heated oxygen sensor (H02S) - range1<br />

performance problem<br />

Engine coolant temperature (ECT)<br />

sensor - malfunction<br />

Wiring, connector(s), H02S<br />

Wiring, intakelexhaust leak, fuel level low, fuel pressure,<br />

EVAP canister purge valve, injector(s), HOZS, ECM<br />

Wiring, connector(s), ECT sensor<br />

1224 I Intake air temperature (IAT) sensor - malfunction Wiring, connector(s), IAT sensor<br />

1225 I Knock sensor (KS) 1 - defective Wiring, connector, KS incorrectly tightened<br />

1226 I Knock sensor (KS) 2 - defective Wiring, connector, KS incorrectly tightened<br />

1231 I Battery voltage - too lowlhigh Wiring, alternator, battery<br />

1232 I Closed throttle position (CTP) switch - malfunction Wiring, connector, CTP switch, ECM<br />

1233 I Throttle position (TP) sensor - malfunction Wiring, TP sensor, ECM<br />

1234 I Vehicle speed sensor (VSS) - incorrectlno signal Wiring, instrument panel, VSS<br />

1235 I Torque converter clutch (TCC) solenoid - defective Wiring, TCC solenoid<br />

Throttle control, traction control system (TCS) -<br />

defective<br />

1236 Engine control module (ECM)IABS control module<br />

communication, ASR system<br />

Wiring, connector(s), throttle control system<br />

Wiring, ABS trouble code(s) stored, ECM<br />

1237 I AC compressor clutch relay - malfunction Wiring, AC compressor clutch relay<br />

Intake manifold air control solenoid - circuit<br />

malfunction<br />

1238 / Engine control module (ECM) - unused output<br />

stage<br />

1241 I Engine control module (ECM) - no supply voltage Wiring, fuse(s), battery<br />

1241 Engine control module (ECM)IABS control module<br />

communication, traction control system (TCS)<br />

Wiring, connector, intake manifold air control solenoid<br />

Wiring short to earthlpositive, ignore flash code if<br />

terminal 18 not connected<br />

Wiring, ABS trouble code(s) stored, ECM<br />

1241 Engine control module (ECM), electronic throttle<br />

system (ETS) - overmn torque control<br />

Wiring short to positive, ECM<br />

1242 AC control modulelengine control module (ECM)<br />

communication - malfunction<br />

Wiring, AC control module<br />

1243 Crankshaft position (CKP) sensorlengine speed<br />

(RPM) sensor - incorrectlno signal<br />

Wiring, CKP sensorlRPM sensor<br />

Camshaft position (CMP) sensor -<br />

rangelperformance problem<br />

Wiring, CMP sensor<br />

1245 Engine control module (ECM)ltransmission control<br />

module (TCM) communication - short to earth<br />

Wiring, ECM, TCM<br />

1247 Ignition circuit - primary circuit<br />

Wiring, ignition coil(s)

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