C32", "C33", "C34" Or "C35" Fuel Injection Malfunction - Suzuki GSX1400 Service Manual

4-46 FI SYSTEM

"C32", "C33", "C34" or "C35" FUEL INJECTION MALFUNCTION

DETECTED CONDITION
No injector current.
INSPECTION
• Lift and support the fuel tank with a proper stay. (
1
Turn the ignition switch OFF.
Check the injector coupler for loose or poor contacts.
If OK, then measure the injector resistance.
Disconnect the coupler and measure the resistance be-
tween terminals.
Injector resistance: 12 – 18 Ω Ω Ω Ω Ω at 20°C (68°F)
If OK, then check the continuity between each terminal
and ground.
Injector continuity: ∞Ω
09900-25008: Multi circuit tester
Tester knob indication: Resistance (Ω Ω Ω Ω Ω )
Yes
2
Turn the ignition switch ON.
Measure the injector voltage between Y/R wire and
ground.
Injector voltage: Battery voltage
NOTE:
Injector voltage can be detected only 3 seconds after igni-
tion switch is turned ON.
09900-25008: Multi circuit tester
Tester knob indication: Voltage (
Yes
Gr/W, Gr/B, Gr/Y, Gr/R or Y/R wire open or shorted to ground, or
poor 5, 6, 7, 8 or R connection. (
If wire and connection are OK, intermittent trouble or faulty ECM.
Recheck each terminal and wire harness for open circuit and
poor connection. ( 4-4)
www.GSX1400FE.com
(Terminal – Terminal)
∞Ω ∞Ω ∞Ω ∞Ω (Infinity)
(Terminal – Ground)
No
Replace the injector with
a new one. (
(Y/R – Ground)
)
No
Open circuit in the Yellow/
Red wire.
4-22)
Replace the ECM with a new one,
and inspect it again.
POSSIBLE CAUSE
• Injector circuit open or short.
• Injector malfunction.
• ECM malfunction.
4-48)
1
4-64)
2
9
Y/R Y/R
ECM coupler