Fi System Troubleshooting - Suzuki GSX-R750 Service Manual

1A-24 Engine General Information and Diagnosis:
Item
EVAP system purge control
solenoid valve (E-33 only)
Vehicle speed sensor
Steering damper solenoid
valve
The engine can start and can run even if the signal in the table 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 necessary to
bring the motorcycle to the workshop for complete repair.
When two ignition signals or two injector signals are not received by ECM, the fail-safe circuit can not work and ignition
or injection is stopped.

FI System Troubleshooting

Customer Complaint Analysis
Record details of the problem (failure, complaint) and how it occurred as described by the customer. For this purpose,
use of such an inspection form such as following will facilitate collecting information to the point required for proper
analysis and diagnosis.
NOTE
This form is a standard sample. The form should be modified according to conditions and
characteristic of each market.
EXAMPLE: CUSTOMER PROBLEM INSPECTION FORM
User name:
Date of issue:
Malfunction indicator
light condition (LED)
Malfunction display/code
(LCD)
Difficult Starting
No cranking
No initial combustion
No combustion
Poor starting at
( cold / warm /
Other
Poor Idling
Poor fast Idle
Abnormal idling speed
( High / Low) (
Unstable
Hunting ( r/min to
Other
OTHERS:
Fail-Safe Mode
ECM stops controlling EVAP system purge
control solenoid valve.
ECM stops controlling steering damper
solenoid valve.
ECM stops controlling steering damper
solenoid valve.
Model:
Date Reg.:
Always ON / Sometimes ON /
User mode: No display /
Dealer mode: No code /
PROBLEM SYMPTOMS
always)
r/min)
r/min)
Starting Ability
VIN:
Date of problem:
Always OFF /
Malfunction display (
Malfunction code (
Poor Driveability
Hesitation on acceleration
Back fire / After fire
Lack of power
Surging
Abnormal knocking
Engine rpm jumps briefly
Other
Engine Stall when
Immediately after start
Throttle valve is opened
Throttle valve is closed
Load is applied
Other
Running Ability
"YES" "YES"
"YES" "YES"
"YES" "YES"
B838H21104008
Mileage:
Good condition
)
)