Engine	103.940/942 up to 08/88	103.940/942 from 09/88	103.940/942 from 09/89
CFI system designation	3.1	3.1	5.2
On-off ratio/DTC readout (CFI) On-off ratio readout with ignition: ON Engine coolant temperature >80°C % Engine coolant temperature <70°C %	70 -	70 -	70 (Federal) 85 (California) -
Current at EHA Ignition: ON mA After start enrichment and warmup After start enrichment at +20 °C engine coolant temperature mA Warmup base value at+20°C engine coolant temperature mA Engine coolant temperature +80°C mA Enrichment during acceleration and at +20°C engine coolant temperature mA Engine at operating temperature Part load mixture correction mA Wide open throttle enrichment at 2000 rpm mA Deceleration fuel shut off approx. mA Deceleration fuel shut off approx. mA	20 4 - 8 0±1 0±3 >15 readout oscillates 4 - 8 -60 (Bosch control module) -50 (VDO control module)	20 4 - 8; 20 sec. constant -1 to -5; 60 sec. after start readout oscillates >15 readout oscillates 5 - 7 -60 (Bosch control module) -50 (VDO control module)	20 8 - 12; 0 - 8 sec. after start 0 - 1; 14 - 110 sec. after start readout oscillates >15 - 4 - 8 -40

Engine	103.940/942
CFI system designation	3.1/5.2
Ignition timing and dwell Closed throttle (idle) speed rpm Ignition timing with vacuum BTDC Engine speed rpm Ignition timing with vacuum BTDC Ignition timing without vacuum BTDC Dwell ° Dwell %	650 - 750 7 - 11 3200 40 - 44 25 - 29 24 - 53 40 - 88

Engine	Model	MB Part No.	Ignition adjustment ° CA	Resistance /k
103.940/942	124/201	000 540 24 81	0	750

Note: If the reference resitor fails, then the igntion is retarded 3° at wide open throttle.

Engine	103.940/942
CFI system designation	3.1/5.2
Closed throttle ( idle) Selector lever position/Transmission range Engine oil temperature °C approx. Closed throttle (idle) speed rpm Control range % Control range ° On-off ratio readout during deceleration fuel shut off %	P/N D 80 80 650 - 750 <650 35 - 45 <35 21 - 27 95
Engine coolant temperature °C Closed throttle warm-up speed rpm Engine coolant temperature °C Closed throttle warm-up speed rpm	-30 to +25 1100±30 >+25 to +80 declines continuously to 700±50
Vacuum mbar Lambda control control range %	500 - 650 3)

3) Check on-off ratio at 2500 rpm and read mean value with the purge line disconnected and plugged. Compare this value with the closed throttle speed value. The mean value at closed throttle speed must not deviate from the value at 2500 rpm by more than ±10, after 1989 +10.

Engine	103.940/942
CFI system designation	3.1/5.2
Engine performance 4) Engine speed rpm Output, manual transmission, 3rd gear hp Output, 4-speed AT, transmission range 3 hp	5500 119 115

4) These are minimum performance values. Do not exceed speed of 80 mph. Check performance only at simulated engine coolant temperature of 80 oC (use 2 resistance substitution units)