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MODELS LINKS Language
M70 M73 engine management training material E32 E38: here
 German
Setting E32 OBC Codes: E32: here
 English
M.O.S.T  und CANoe Bus-System E32?? Commercial -Vector German
ECU pin identification 750 M70, 1988-90 :    E32: here
List of  Fault Codes  E32: below
Stomp test  E32: below
ZKE Zentrale Karosserie-Elektronik  -  Central body electronic  large PDF
Very useful manual - what does what 		E32: here
 German
DK input details : small PDF file E32: 750 here English


FAULT CODES  (return to top)

To erase the fault code memory, first make sure that the fault code 1000 (short blink and light goes out for a long period) is present,
then depress the throttle fully for at least 10 seconds.
Reactivate the fault code memory as described below
 and check for the 1444 code (no faults stored).
1) Turn the ignition switch to the 'engine run' position.
2) Depress the gas pedal to the floor 5 times. (bank1 for M70)
2-1) Depress the gas pedal to the floor 6 times. (bank2 for M70)
The CHECK ENGINE light will blink out the FAULT CODES starting with the lowest number first.
These FAULT CODES consist of 4 digits each separated by a short pause
(ie. blink pause blink blink pause blink pause blink translates as 1 2  1 1).
full PDF file of process here


Here are the fault codes (from Bentley):

1211: DME Control Module
1215:     Mass Air Flow
1216: Throttle potentiometer
1218: Output Stage Group 1
1219: Output Stage Group 2
1221: O2 Sensor 1
1212: O2 Sensor 2
1222: O2 lean/rich control stop
1213: O2 sensor 2 lean/rich c/s
1223: Coolant Temp Sensor
1224: Air Temp Sensor
1225: Knock sensor 1
1226: Knock Sensor 2
1227: Knock Sensor 3
1228: Knock Sensor 4
1231: Battery Voltage Monitor
1232: Idle Position Signal
1233: Wide Open Throttle Signal
1234: Speedometer A signal
1237: A/C cut-off
1242: A/C signal
1243: Crankshaft Position Sensor
1244: Camshaft Position Sensor
1245: Elect. Tranny control intervention
1247: Ignition Secondary Monitor
1251: Fuel injectors 1,3,5
1252: Fuel injectors 2,4,6
1251: Fuel Injector 1
1252: Fuel Injector 2
1253: Fuel Injector 3
1254: Fuel Injector 4
1255: Fuel Injector 5
1256: Fuel Injector 6
1257: Fuel Injector 7
1258: Fuel Injector 8
1261: Fuel Pump
1262: Idle Speed Control
1263: Evap. System
1264: O2 Sensor Heater
1265: Check Engine Lamp
1266: VANOS
1267: Air Pump
1271: Ignition Coil 1
1272: Ignition Coil 2
1273: Ignition Coil 3
1274: Ignition Coil 4
1275: Ignition Coil 5
1276: Ignition Coil 6
1277: Ignition Coil 7
1278: Ignition Coil 8
1281: DME Memory
1282: Fault Code Memory
1283: Fuel Injector Output Stage
1286: Knock Control test pulse
1000: End of faults
1444: No faults

STOMP TEST  (return to top)

1) Turn the ignition switch to the 'engine run' position.
2) Depress the gas pedal to the floor 5 times. (bank1 for M70)
2-1) Depress the gas pedal to the floor 6 times. (bank2 for M70)
The CHECK ENGINE light will blink out the FAULT CODES starting with the lowest number first.
These FAULT CODES consist of 4 digits each separated by a short pause
(ie. blink pause blink blink pause blink pause blink translates as 1 2  1 1).
full PDF file of process here