Suzuki GSX-R 1000 Service Manual: Dtc “c32” (p0201), “c33” (p0202), “c34” (p0203) or “c35” (p0204): primary fuel injector circuit malfunction

Suzuki GSX-R 1000 Service Manual / Engine / Engine general information and diagnosis / Diagnostic information and procedures / Dtc “c32” (p0201), “c33” (p0202), “c34” (p0203) or “c35” (p0204): primary fuel injector circuit malfunction

Detected condition and possible cause

Detected condition

Possible cause

Ckp signal is produced but fuel injector signal is interrupted by 4 times or more continuity

Injector circuit open or short.
Injector malfunction.
Ecm malfunction.

Wiring diagram

Suzuki GSX-R. Wiring diagram

Troubleshooting

Caution

when using the multi-circuit tester, do not strongly touch the terminal of the ecm coupler with a needle pointed tester probe to prevent terminal damage.

Note

after repairing the trouble, clear the dtc using sds tool. Refer to “use of sds diagnosis reset procedures” .

Step

Action

Yes

Turn the ignition switch off.
Lift and support the fuel tank. Refer to “fuel tank removal and installation” in section 1g .
Check the primary fuel injector coupler (1) for loose or poor contacts.

If ok, then measure the injector resistance.

Disconnect the injector coupler and measure the resistance between terminals.

Special tool
(a): 09900–25008 (multi
circuit tester set)

Tester knob indication resistance (Ω)

Injector resistance 11 – 13 Ω at 20 °c (68 °f) (terminal – terminal)

If ok, then check the continuity between each terminal and ground.

Special tool
(a): 09900–25008 (multi
circuit tester set)

Injector continuity ∞Ω¶ (infinity)

Are the resistance and continuity ok?

Go to step 2.

Replace the injector with a new one. Refer to “throttle body disassembly and assembly” in section 1d .

Turn the ignition switch on.
Measure the injector voltage between the y/r wire and ground.

Note

injector voltage can be detected only for 3 seconds after ignition switch is turned on.

Special tool
(a): 09900–25008 (multi
circuit tester set)

Tester knob indication voltage ( )

Injector voltage battery voltage ((+) terminal: y/r – (–) terminal: ground)

Is the voltage ok?

Gr/w wire open or shorted to ground, or poor “46” connection (#1 cylinder side).
Gr/b wire open or shorted to ground, or poor “45” connection (#2 cylinder side).
Gr/y wire open or shorted to ground, or poor “44” connection (#3 cylinder side).
Gr/r wire open or shorted to ground, or poor “43” connection (#4 cylinder side).
If wire and connection are ok, intermittent trouble or faulty ecm.
Recheck each terminal and wire harness for open circuit and poor connection.
Replace the ecm with a known good one, and inspect it again. Refer to “ecm removal and installation” in section 1c .

Open circuit in the y/r wire.

DTC “c31” (p0705): gp switch circuit malfunction

Detected condition and possible cause Detected condition Possible cause No gear position switch voltage Gp switch voltage is not within the following range. Gp switch ...

Dtc “c36” (p1764), “c37” (p1765), “c38” (p1766) or “c39” (p1767): secondary fuel injector circuit malfunction

Detected condition and possible cause Detected condition Possible cause Some failure exists in the fuel injector signal in a high load, high revolution condition. ...

Other materials:

Special tools and equipment
Recommended service material Note required service material is also described in the following. “Front brake master cylinder components” “rear brake master cylinder components” “rear brake pedal construction” Special tool ...

Front brake disc removal and installation
Removal Remove the front wheel assembly. Refer to “front wheel assembly removal and installation” in section 2d . Remove the front brake disc. Installation Install the front brake disc in the reverse order of removal. Pay attention to the following points: make sure ...

Rear wheel removal
Place the motorcycle on the side stand. Remove the cotter pin 1. Remove the axle nut 2. Warning A hot muffler can burn you. The muffler will be hot enough to burn you for some time after stopping the engine. Wait until the muffler cools to avoid bur ...