Suzuki DF 50 Service Manual

3-29 ENGINE CONTROL SYSTEM
FAIL-SAFE SYSTEM
The fail-safe system is closely related to the self-diagnostic system.
When an abnormality occurs in a sensor signal, the ECM ignores the out-of-range signal and assumes a pre-
programmed value for the failed sensors.
This allows the engine to continue running under the fail-safe condition.
PRE-PROGRAMMED VALUE FOR FAIL-SAFE SYSTEM
NOTE:
There is no back-up system for the ECM itself. The engine will stop if it has failed.
MAP sensor 1 • 319 – 475 mmHg / (750 – 4000 r/min)
CMP sensor • Fuel Injection:
1 simultaneous injection for all cylinders per 2 crankshaft rotations
• Ignition Timing:
Normal ignition timing based on signals from CKP sensor (s)
Cylinder temp. sensor 60 °C (140 °F)
IAT sensor 45 °C (113 °F)
Exhaust manifold
60 °C (140 °F)
temp. sensor
FAILED ITEM PRE-PROGRAMMED VALUE

Suzuki DF 50 Specifications

General

Engine Type	4-Stroke
Cylinders	3
Displacement	941 cc
Starting System	Electric
Steering	Remote
Engine Type Detail	DOHC 12-Valve
Maximum Output	50 HP
Ignition System	Digital CDI
Alternator	12V 19A
Gear Ratio	2.27:1
Exhaust	Through Prop Hub Exhaust
Trim Method	Power Trim and Tilt
Max Power	50 HP
Alternator Output	12V 19A
Fuel Delivery System	Sequential Multi Point Electronic Fuel Injection
Full Throttle Operating Range	5, 300 - 6, 300 rpm
Engine Oil Capacity	2.7 L
Full Throttle RPM Range	5300 - 6300 RPM
Oil Capacity	2.7 L
Bore x Stroke	72.5 x 76.0 mm (2.85 x 2.99 in.)