Suzuki GSX-R 1000 Service Manual: Self-diagnosis function
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 odd / trip / clock / panel light brightness / lap time counter are indicated in the lcd panel and motorcycle can run.
*2
The injection signal is stopped, when the camshaft position sensor signal, crankshaft position sensor signal, tip-over sensor signal, #1, #2, #3 and #4 ignition signals, #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.
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 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.
“Sd”:
the lcd panel indicates “sd” when the steering damper solenoid malfunction, battery abnormal voltage and speed sensor malfunction occurred.
Dealer mode
The defective function is memorized in the computer. Use the special tool’s coupler to connect to the mode select switch. The memorized malfunction code is displayed on lcd (display) panel. Malfunction means that the ecm does not receive signal from the devices. These affected devices are indicated in the code form.
 Caution
If the coupler from the ecm is disconnected, the malfunction code memory is erased and the malfunction code can not be checked. |
Special tool
(a): 09930–82720 (mode selection
switch)
Injection timing description
Injection time (injection volume)
The factors to determine the injection time include the basic fuel injection
time, which is calculated on the basis of the
intake air pressure, engine speed and t ...
Schematic and routing diagram
FI system wiring diagram
Terminal alignment of ecm coupler
...
Other materials:
Engine oil and filter change
Change the engine oil and oil filter
at the scheduled times. The
engine should always be warm
when the oil is changed so the oil
will drain easily. The procedure is
as follows:
Place the motorcycle on the
side stand.
Remove the three screws of
the right fairing 1.
...
Fuel pump inspection
Turn the ignition switch on and check that the fuel pump
operates for a few seconds.
If the fuel pump motor does not make operating sound, inspect the fuel pump
circuit connections or inspect the fuel pump relay and to sensor. Refer to “fuel
pump relay inspection” and “dtc “c23” (p1651 ...
Engine components removable with the
engine in place
Engine components which can be removed while the engine is installed on the
frame are as follows. For the installing
and removing procedures, refer to respective paragraphs describing each
component.
Center of engine
Item
Removal
Inspection
Installation
...