Suzuki GSX-R1000 2007, Service Manual

Page: 232 / 549

FI SYSTEM DIAGNOSIS 4-77
“C36” (P1764), “C37” (P1765), “C38” (P1766) or “C39” (P1767)
SECONDARY FUEL INJECTOR CIRCUIT MALFUNCTION
INSPECTION
Step 1
1) Turn the ignition switch OFF.
2) Lift and support the fuel tank. (
5-3)
3) Check the secondary injector coupler for loose or poor
contacts.
If OK, then measure the secondary injector resistance.
4) Disconnect the secondary injector coupler and measure the
resistance between terminals.
Secondary injector resistance:
11 – 13
Ω
at 20 °C (68 °F)
(Terminal – Terminal)
DETECTED CONDITION POSSIBLE CAUSE
Some failure exists in the fuel injector signal in a
high load, high revolution condition. • Injector circuit open or short
• Injector malfunction
• ECM malfunction
ECM
FP relay
Secondary fuel injector
Y/R
Gr/W
Gr/B
Gr/Y
Gr/R
#21
#31
#41
#11
To engine
stop switch
#2 #3 #4 #1
When using the multi-circuit tester, do not strongly touch the terminal of the ECM coupler with
a needle pointed tester probe to prevent the terminal damage or terminal bend.
1
1