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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

No

1

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

    If ok, then measure the injector resistance.


  1. 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)


  1. 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 .

2

  1. Turn the ignition switch on.
  2.  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.
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Other materials:

Air cleaner box removal and installation
Removal Lift and support the fuel tank. Refer to “fuel tank removal and installation” in section 1g (page 1g- 9).  Remove the air cleaner box cover. Refer to “air cleaner element removal and installation” .  Remove the air cleaner mounting bolt. Remove the air clea ...

Diagnostic information and procedures
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Procedure for returning to service
Clean the entire motorcycle.  Remove the oily rags from the air cleaner intake and muffler outlet.  Drain all the engine oil. Install a new oil filter and fill the engine with fresh oil as outlined in this manual.  Remove the spark plugs. Turn the engine a few tim ...

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