Suzuki GSX650F, Supplementary Service Manual

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Engine General Information and Diagnosis: 1A-1
Engine
Engine General Information and Diagnosis
General Description
Self-Diagnosis Function (GSX650FK8)
B817H21101003
The self-diagnosis function is incorporated in the ECM. The function has two modes, “User mode” and “Dealer mode”.
The user can only be notified by the LCD (DISPLAY) panel and LED (FI indicator light). To check the function of the
individual FI system devices, the dealer mode is provided. In this check, the special tool is necessary to read the code
of the malfunction items.
User Mode
*1
When one of the signals is not received by ECM, the fail-safe circuit works and injection is not stopped. In this case,
“FI” and odometer are indicated in the LCD panel and motorcycle can run.
*2
The injection signal is stopped, when the crankshaft position sensor signal, tip-over sensor signal, ignition signal, #1,
#2, #3 and #4 injector signals, fuel pump relay signal or ignition switch signal is not sent to ECM. In this case, “FI” is
indicated in the LCD panel. Motorcycle does not run.
“CHEC”:
The LCD panel indicates “CHEC” when no communication signal from the ECM is received for 5 seconds and more.
For Example:
The ignition switch is turned ON, and the engine stop switch is turned OFF. In this case, the speedometer does not
receive any signal from the ECM, and the panel indicates “CHEC”.
If CHEC is indicated, the LCD does not indicate the trouble code. It is necessary to check the wiring harness between
ECM and speedometer couplers.
The possible cause of this indication is as follows:
Engine stop switch is in OFF position. Side-Stand/ignition inter-lock system is not working. Ignition fuse is burnt.
NOTE
The FI light “B” turns ON about 3 seconds after turning the ignition switch is turned ON.
Malfunction
LCD (display) indication
“A”
FI indicator light
indication “B”
Indication mode
“NO” Odometer — —
“YES”
Engine can start
Odometer and “FI” letters
*1
FI indicator light turns ON.
Each 2 sec. Odometer or
“FI” is indicated.
Engine can not start
“FI” letters
*2 FI indicator light turns ON
and blinks. “FI” is indicated
continuously.
FI
“A”
“B”
I817H2110002-01