Engine	111.973
Models	170.447
ME-SFI system designation	2.1
Engine, check, adjust 07-1100 Page 1 Engine oil level HHT display Fuel tank level HHT display Engine oil temperature ° C Engine speed (selector lever in P/N position) rpm Air mass kg/h MAF voltage (increasing rpm = increasing voltage) V Ignition timing with premium unleaded gasoline (91 posted/95 RON) 1) o CKA Injection duration ms Adjustable camshaft timing solenoid HHT display Camshaft Hall-effect sensor, value jumps HHT display ECT ° C Intake air temperature (IAT) ° C Purge valve on-off ratio % Battery voltage V Actuator Actual value potentiometer r1 V Actual value potentiometer r2 V Pedal value sensor Nominal value potentiometer r1 V Nominal value potentiometer r2 V CTP recognition (accelerator pedal not depressed) HHT display WOT recognition HHT display	OK OK >60 650 - 850 8 - 13 1.1 - 1.7 5 - 20 2 - 4 Off 55-AA >80 >20 0 - 15 10 4.0 - 4.6 0.3 - 0.9 0.2 - 0.5 0.1 - 0.4 ON OFF

1) In case of complaint, check ignition timing at full load.

Engine	111.973
Models	170.447
ME-SFI system designation	2.1
Engine, check, adjust 07-1100 Page 2 Torque Nm Throttle vale angle ° Throttle valve stop learned HHT display On-off ratio before TWC, ECT >70°C % O2S 1 voltage before TWC mV Self adaptation at partial load Factor Self adaptation at idle ms Driving range (selector lever position) HHT display A/C compressor, EC pushbutton depressed HHT display Purge system HHT display Safety fuel shut off HHT display	- 1.8 - 3.0 YES 0 ± 25 2) oscillates - 200 to + 1000 12) 0.68 - 1.32 5) - 1 to + 1 4) P/N OFF OFF/ON OFF
Engine/climate control electric cooling fan Fan output requirement Climate control system % Engine % Effective fan output, on-off ratio %	0 - 95 0 - 95 0 - 95

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 at idle, 0.0 kg/h (Bosch) or 0.0% (VDO). Mixture tendency " rich " < 0.0 kg/h or 0.0%. Mixture tendency " lean " > 0.0 kg/h or 0.0%. 5) Base setting partial load = 1.0. Mixture tendency " rich " < 1.0, mixture tendency " lean " = > 1.0. 12) Oscillates around 300 mV after 2 minutes at idle.

Engine	111.973
Models	170.447
ME-SFI system designation	2.1
Cold start 07-2321 Engine oil level HHT Display Fuel tank level HHT Display Engine rpm while cranking rpm Battery voltage V Safety fuel shut off HHT display ECT ° C IAT ° C ECT at starting ° C CTP recognition (accelerator pedal not depressed) HHT display	OK OK > 200 10 OFF 7) 7) 7) ON

7) Proceed complaint related or temperature related.

Engine	111.973
Models	170.447
ME-SFI system designation	2.1
Warmup 07-2023 Warmup speed 12) ECT < 40 °C rpm Warmup speed 12) ECT > 40 °C rpm Engine rpm (raised idle speed temperature dependent) ECT approx. <0 °C rpm ECT approx. 0 to +30 °C rpm ECT approx. +30° to 40 °C rpm ECT approx. >40 °C rpm CTP recognition (accelerator pedal not depressed) HHT display After start enrichment < 70 °C maximum 50 seconds HHT display TWC heating at idle < 30 °C maximum 50 seconds HHT display O2S 1 heater before TWC V A/C compressor HHT display	approx. 1150 ± 100 approx. 800 P/N: 1000 ± 100 D: 800 ± 100 P/N: 800 ± 100 D: 700 ± 100 P/N: 750 ± 100 D: 650 ± 100 P/N: 750 ± 100 D: 600 ± 100 ON ON ON - OFF

12) Raised idle speed for max. approx. 50 seconds after starting.

Engine	111.973
Models	170.447
ME-SFI system designation	2.1
Engine performance 7) 07-1203 or 07-1206 Engine oil level HHT display Fuel tank level HHT display Engine speed rpm Air mass kg/h MAF sensor voltage V Ignition timing with premium unleaded gasoline (91 posted/95 RON) °CKA Injection duration ms Adjustable camshaft timing solenoid 4000 rpm HHT display Adjustable camshaft timing solenoid >4300 rpm HHT display Camshaft Hall-effect sensor, value jumps HHT display ECT °C IAT °C Purge valve on-off ratio % Battery voltage V Driving range 3 hp Altitude (correction value) Factor	OK OK 5200 440 - 540 4.1 - 4.5 9 - 13 14 - 17 ON OFF 55 - AA 80 - 100 < 30 - 10 147 -

7) These are minimum performance values. Do not exceed speed of 80 mph. Simulating engine coolant temperature and intake air temperature is not possible with ME-SFI. When testing WOT position be sure to use an external cooling fan to ensure adequate engine cooling.

Engine	111.973
Models	170.447
ME-SFI system designation	2.1
Engine performance 7) 07-1203 or 1206 Page 2 Exhaust gas back pressure at 5300 rpm mbar Actuator Actual value potentiometer r1 V Actual value potentiometer r2 V Pedal value sensor Nominal value potentiometer r1 V Nominal value potentiometer r2 V Throttle valve angle ° CTP recognition HHT display WOT recognition HHT display Torque Nm Knock control approved HHT display Knock ignition angle/cylinder °CKA Knock sensor V Driving range (selector lever position) HHT display A/C compressor, EC pushbutton depressed HHT display Transmission overload protection HHT display Deceleration shut-off HHT display Front axle VSS mph (km/h) Rear axle VSS mph (km/h)	< 200 0.5 - 1.1 3.9 - 4.5 4.1 - 4.7 4.1 - 4.7 80 - 83 OFF ON 280 - 300 OFF/ON 14) 0 > 0.5 R, D - 1 OFF OFF OFF - > 62 (100)

7) These are minimum performance values. Do not exceed speed of 80 mph. Simulating engine coolant temperature and intake air temperature is not possible with ME-SFI. When testing WOT position be sure to use an external cooling fan to ensure adequate engine cooling. 14) HHT display ON if knock control is required.

Engine	111.973
Models	170.447
ME-SFI system designation	2.1
Cruise control Brake switch, brake pedal not depressed HHT display Stop lamp switch, brake pedal not depressed HHT display Move CC switch to corresponding position HHT display Safety contact, CC switch actuated HHT display Safety contact, CC switch not actuated HHT display Cruise control HHT display Maintain transmission range HHT display Cruise control shut-off, function HHT display Cruise control shut-off, safety HHT display	OFF OFF V/SP/B/A ON OFF - - - -
Drive authorization system (DAS) DAS and ME-SFI control modules compatible HHT display Engine control module identified HHT display Engine control module locked HHT display Drive authorization activated HHT display Vehicle locked with RCL HHT display Number of starts with not locked control module Number	YES YES YES YES NO 0
Supercharger Air flap/air filter angle ° Magnetic supercharger clutch HHT display Supercharger output efficiency Factor	> 85 ON > 1.3
Idle Quality Rpm deviation/cylinder revolution/s2 Rpm deviation cut out threshold revolution/s2 Idle quality failure counter as of 02/96 Number	1) 0.5 2) 0
On-off ratio Idle speed rpm Engine speed rpm On-off ratio at WOT and transmission selector lever position 3 % On-off ratio at upper partial load and transmission selector lever position "D", 75 mph (120 km/h), 32 hp (24 kW) % On-off ratio at lower partial load and transmission selector lever position "D", 31 mph (50 km/h), 9 hp (7 kW), % Exhaust gas back pressure mbar	650 - 850 3500 0±25 constant 0±25 oscillating 0±25 oscillating <200

1) Entry if value is larger than cut out threshold. 2) Temporary test value.