Suzuki DF200/DF225/DF250 V6 4-Stroke Outboards Service Manual, Page 104Get this manual
ENGINE CONTROL SYSTEM
FAIL-SAFE SYSTEM
The fail-safe system is closely related to the self-diagnostic systemWhen an abnormality occurs in sensor signal, the ECM ignores the out-of-range signal and assumes pre-programmed value for the failed sensorsThis allows the engine to continue running under the fail-safe condition
PRE-PROGRAMMED VALUE FOR FAIL-SAFE SYSTEM
FAILED ITEM MAP sensor CKP sensor PRE-PROGRAMMED VALUE 280 560 mmHg (11.02 22.05 inHg)(The control takes place in accordance with the engine speed [NOTE 1] Based on signals from CMP sensor: The ignition timing is controlled in 10 degree range in accordance with the engine condition Normal sequential fuel injectionBased on signals from CKP sensor: (a) Failed with engine running Normal ignition timing Normal sequential fuel injection VVT advance is fixed at the most retarded angle(b) Failed prior to engine start The ignition timing is controlled in 10 degree range in accordance with the engine condition simultaneous injection for all cylinders per crankshaft rotations VVT advance is fixed at the most retarded angle The control is executed with the maximum engine speed as 2000 rmin 60 (140 F) 45 (113 F) 60 (140 F) The control is executed with the throttle opening as degrees VVT advance is fixed at the most retarded angle The shift position whether neutral or other is detected with the neutral switch signal The IAC control is operated in the forward map VVT advance is fixed at the most retarded angle VVT advance is fixed at the most retarded angle The ECM cyclically outputs the drive and stop signals for the OCV and when the difference between the VVT's target advance angle and the actual advance angle has come to the normal range, the diagnostic code display is canceled The original model discrimination is retained