Fail-Safe Function - Suzuki 125 Service Manual

32 RV125K7 ('07-MODEL)

FAIL-SAFE FUNCTION

FI system is provided with fail-safe function to allow the engine to start and the motorcycle to run in a mini-
mum performance necessary even under malfunction condition.
ITEM
IAP sensor
TP sensor
IAT sensor
ET sensor
HO2 sensor
ISC valve
The engine can start and can run even if the above signal is not received from each sensor. But, the engine
running condition is not complete, providing only emergency help (by fail-safe circuit). In this case, it is nec-
essary to bring the motorcycle to the workshop for complete repair.
FAIL-SAFE MODE
Intake air pressure is fixed to 101
kPa (760 mmHg).
The throttle opening is fixed to full
open position.
Ignition timing is also fixed.
Intake air temperature value is fixed
to 25 °C.
Engine temperature value is fixed to
80 °C.
Feedback compensation is inhibited.
(Air/fuel ratio is fixed to normal.)
ISC operation is stopped.
STARTING RUNNING
ABILITY ABILITY
"YES" "YES"
"YES" "YES"
"YES" "YES"
"YES" "YES"
"YES" "YES"
"YES" "YES"