Engine	119.970/971/972/974/975
Models	124.034/036, 129.067, 140.042/043/051/070
LH-SFI system designation	4.1
Engine, check, adjust (07-1100) 15) Throttle valve angle ° ECT ° C approx. Engine oil temperature ° C approx. Engine speed (selector lever in P/N position) rpm Injection duration ms Air mass kg/h Hot wire voltage V O2S voltage (oscillates around 300mV after 2 min.) mV On-off ratio readout with ignition: ON ECT <70°C % ECT >70°C % Self adaptation idle air kg/h Self adaptation factor lower/upper range of part load Ignition timing with premium unleaded fuel (91 posted/95 RON) °CKA LH-SFI reference resistor HHT display Air pump after start, maximum of 20 seconds <40° C Purging, >46° C intake air HHT display EGR, air mass > 130 kg/h HHT display Fuel shut off > 1100 rpm HHT display Cylinder shut off/ignition miss HHT display	0.3 - 2 >80 60 - 80 600 - 750 3 - 5 20 - 28 1.3 - 1.7 -200 to +1000 30 50±10 2) 0±2 4) 0.9 - 1.1 5) 5 - 20 1) 13) - - 14) ON ON ON OFF 6)

1) Refer to DI testing. 2) In case of complaint, on-off ratio must be measured at idle speed and at 2500 rpm with purge line to engine disconnected and plugged. 4) Base setting idle, 0.0 kg/h (Bosch) (VDO), mixture tendency rich , < 0.0 kg/h, mixture tendency lean > 0.0 kg/h. 5) Base setting part load = 1.0, mixture tendency rich <1.0, mixture tendency lean > 1.0. 6) Defective cylinder is highlighted. Further tests to be carried out using engine analyzer. 13) In case of complaint, check ignition timing at 2500 ± 200 rpm. Nominal value 38 - 45o with vacuum or check ignition timing under load. 14) Display - F - is OK for USA vehicles. 15) Time Guide operation no. and/or SMS job no.

Engine	119.970/971/972/974/975
Models	124.034/036, 129.067, 140.042/043/051/070
LH-SFI system designation	4.1
Engine, check, adjust (DI) (07-1100) 15) ECT ° C approx. Engine oil temperature ° C approx. Engine speed (selector lever in P/N position) rpm IAT ° C Altitude mbar Ignition timing with premium unleaded fuel (91 posted/95 RON) °CKA Reference resistor DI HHT display Transmission overload protection switch (selector lever in P/N position) HHT display LH-SFI control module voltage, circuit 30 V MAP mbar KS active HHT display Knock retard/cylinder °CKA Combustion voltage/cylinder V Combustion duration/cylinder ms Combustion duration difference between cylinders ms	>80 60 - 80 600 - 750 <30 check barometer 5 - 20 13) 7) OFF 11 - 14 550-650 OFF 0.0 25 - 70 8) 1.5 - 1.9 8) 0.3 8)

7) Refer to DI reference resistors. 8) Display only on Bosch control modules. 13) In case of complaint, check ignition timing at 2500 ± 200 rpm. Nominal value 38 - 45o with vacuum or check ignition timing under load. 15) Time Guide operation no. and/or SMS job no.

Engine	119.970/971/972/974/975
Models	124.034/036, 129.067, 140.042/043/051/070
LH-SFI system designation	4.1
Cold start ECT ° C approx. Engine speed rpm Starter signal circuit 50, during cranking HHT display After start enrichment < 70° C maximum of 20 seconds HHT display CTP contact (accelerator pedal not depressed) HHT display LH-SFI control module voltage, circuit 30 V Fuel pump HHT display	9) 9) ON ON ON 11 - 14 ON
Warmup Transmission selector lever position ECT ° C approx. CTP warmup speed rpm Warmup HHT display CTP contact (accelerator pedal not depressed) HHT display AIR pump after >20 seconds HHT display IAT ° C	P/N up to 65 1000±100 declines continuously to 600 - 750 <70° C ON >70° C OFF ON 3) OFF >20

3) Connecting harness to EA: -with open circuit or short to positive indicates OFF constantly. -with short to ground indicates OFF constantly. 9) Temperature at which complaint occurs.

Engine	119.970	119.972
Models	140.051/070	129.067
LH-SFI system designation	4.1	4.1
Engine performance 10) (07-1203 or 07-1206) 15) Engine speed rpm Ignition timing with premium unleaded gasoline (91 posted/95 RON) oCKA Injection duration ms Air mass kg/h Hot wire voltage V Altitude mbar WOT recognition HHT display Acceleration enrichment HHT display Deceleration shut off >2100 rpm HHT display Camshaft timing adjustment >2000 rpm HHT display VSS mph (km/h) Delayed shift point HHT display Output, TR 3 hp	5500 23 - 28 12 - 17 910 - 990 - refer to barometer ON ON ON OFF >62 (100) OFF 244 11)	5500 23 - 28 12 - 17 910 - 990 - refer to barometer ON ON ON OFF >62 (100) OFF 237

10) These are minimum performance values. Do not exceed speed of 80 mph. Check performance only at simulated engine coolant temperature of 80 oC and intake air temperature of 20 oC (use 2 resistance substitution units). 11) Without wide open throttle enrichment. 15) Time Guide operation no. and/or SMS job no.

Engine	119.971	119.974	119.975
Models	140.042/043	124.036	124.034
LH-SFI system designation	4.1	4.1	4.1
Engine performance 10) (07-1203 or 07-1206) 15) Engine speed rpm Ignition timing with premium unleaded gasoline (91 posted/95 RON) °CKA Injection duration ms Air mass kg/h Hot wire voltage V Altitude mbar WOT recognition HHT display Acceleration enrichment HHT display Deceleration shut off >2100 rpm HHT display Camshaft timing adjustment >2000 rpm HHT display VSS mph (km/h) Delayed shift point HHT display Output, TR 3 hp	5500 23 - 28 12 - 17 910 - 990 - refer to barometer ON ON ON OFF >62 (100) OFF 212 11)	5500 18 - 22 12 - 17 910 - 990 - refer to barometer ON OFF ON ON >62 (100) OFF 237	5500 18 - 22 12 - 17 910 - 990 - refer to barometer ON ON ON OFF >62 (100) OFF 205

10) These are minimum performance values. Do not exceed speed of 80 mph. Check performance only at simulated engine coolant temperature of 80 °C and intake air temperature of 20 °C (use 2 resistance substitution units). 11) Without wide open throttle enrichment. 15) Time Guide operation no. and/or SMS job no.

Reference Resistor (DI)

Engine	Model	MB Part No.	Ignition adjustment ° CKA	Resistance /k
119	124 129 140	015 545 67 28	0	2.4 k (premium unleaded 91 posted/95 RON)

Note: If the reference resistor is missing, the ignition is retarded 3° at wide open throttle.