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Diagnostic Manual, Engines, Volume 1

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LOCATION:    A HFM-SFI Test and Adjustment Data    >   43 Refer to Parts Microfiche Gr. 54 to identify control modules


Refer to Parts Microfiche Gr. 54 to identify control modules

Engine 111.961
Models 202.022
HFM-SFI system designation 3.4
Closed throttle position (CTP), check, adjust (07-2053 or 07-2056) 9)
Selector lever position
ECT ° C approx.
Engine speed rpm
Ignition timing with premium unleaded fuel (91 posted/95 RON) °CKA
On-off ratio %
CTP contact (accelerator pedal not depressed) HHT display

P/N
>80
650 - 850
5 - 13 1)
0±10 2)
ON
1) The ignition timing is also used for idle speed stabilization. In extreme cases the timing can briefly vary by ±10° from specification.
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.
9) Time Guide operation no. and/or SMS job no.

Engine 111.961
Models 202.022
HFM-SFI system designation 3.4
Engine, check, adjust (07-1100) 9)
ECT ° C approx.
Engine speed (selector lever in P/N position) rpm
Injection duration ms
Air mass kg/h
O2S 1 voltage (oscillates around 300mV after 2 min.) mV
O2S 2 voltage (oscillates around 300mV after 2 min.) mV
On-off ratio %
Self adaptation idle air kg/h
Self adaptation idle air %
Self adaptation factor lower/upper range of part load
Ignition timing with premium unleaded fuel (91 posted/95 RON) °CKA
Throttle valve angle °
Deceleration shut-off > 2100 rpm HHT display
Air pump after start, maximum of 20 seconds <40° C
CTP contact (accelerator pedal not depressed) HHT display
WOT contact (accelerator pedal in WOT) HHT display

>80
650 - 850
3 - 5
9 - 13
-200 to +1000
-200 to +1000
0±10 2)
±2 3)
±15 3)
0.85 - 1.15 4)
5 - 13 1)
1.0 - 1.8
ON
ON
ON
ON
1) The ignition timing is also used for idle speed stabilization. In extreme cases the timing can briefly vary by ±10° from specification.
2) In case of complaint, lambda must be measured at idle speed and at 2500 rpm with purge line to engine disconnected and plugged.
3) Base setting 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%.
4) Base setting part load = 1.0, mixture tendency rich <1.0 mixture tendency lean > 1.0.
9) Time Guide operation no. and/or SMS job no.

Engine 111.961
Models 202.022
HFM-SFI system designation 3.4
Cold start, (07-2321) 9)
ECT ° C approx.
Engine 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

5)
5)

ON
ON
ON
Warmup, (07-2023) 9)
Transmission selector lever position
Warmup speed (raised idle speed) time dependent
ECT <+20° C for approximately 20 seconds after start rpm
Warmup speed (raised idle speed) temperature dependent
ECT <0° C rpm
ECT 0 - 30° C rpm
ECT 30 - 40° C rpm
ECT >40° C rpm

Warmup HHT display
CTP contact (accelerator pedal not depressed) HHT display
Partial intake manifold preheater HHT display
Selector lever position (P/N) HHT display
A/C compressor (not engaged) HHT display
IAT ° C

P/N D

1150±100

1000±50 800±50
850±50 700±50
800±50 650±50
750±50 600±50

<80° C ON / >80° C OFF
ON
<70° C ON / >70° C OFF
OFF
OFF
>20
5) Temperature at which complaint occurs.
9) Time Guide operation no. and/or SMS job no.

Engine 111.961
Models 202.022
HFM-SFI system designation 3.4
Engine performance 6) (07-1203 or 07-1206) 9)
Engine speed rpm
Ignition timing with premium unleaded gasoline (91 posted/95 RON) oCKA
Injection duration ms
Air mass kg/h
WOT contact (accelerator pedal fully depressed) HHT display
Camshaft timing adjustment <2000 rpm HHT display
Camshaft timing adjustment >2000 rpm HHT display
Camshaft timing adjustment >4000 rpm HHT display
Output, 4-speed AT, TR 3 hp
VSS mph (km/h)
Deceleration shut-off >2100 rpm 8) HHT display

5400
18 - 21
14 - 16
380 - 400
ON
OFF
ON
OFF
103
> 62 (100)
ON
6) These are minimum performance values. Do not exceed speed of 80 mph. Do not exceed speed of 80 mph. It is not possible to simulate coolant and intake air temperature as these are determined by the HFM-SFI system. Provide adequate cooling using external fan when check wide open throttle performance.
8) On model 202, deceleration fuel shut off cannot be tested on a chassis dynamometer.
9) Time Guide operation no. and/or SMS job no.

Engine 111.961
Models 202.022
HFM-SFI system designation 3.4
On-off ratio
Idle speed rpm
Engine speed rpm
On-off ratio at WOT and TR 3 %
On-off ratio at upper partial load and TR "D", 75 mph (120 km/h),
32 hp (24 kW) %
On-off ratio at upper partial load and TR "D", 31 mph (50 km/h),
9 hp (7 kW) %
Exhaust gas back pressure mbar

650 - 850
3500
0 ± 10 constant

±10 oscillates

±10 oscillates
< 300