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Suzuki GSX-R 1000 Service Manual: DTC “c41” (p0230-h/l): fp relay circuit malfunction

Detected condition and possible cause

Detected condition

Possible cause

C41

No voltage is applied to fuel pump.
  • Fuel pump relay circuit open or short.
  • Fuel pump relay malfunction.
  • Fuel pump relay switch circuit is shorted to power source.
  • Faulty pump relay (switch side).
  • Fuel pump relay coil circuit open or short.
  • Faulty pump relay (coil side).

P0230

H

Voltage is applied to fuel pump although fuel pump relay is turned off.

L

No voltage is applied to fuel pump although fuel pump relay is turned on.

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” .

C41 (use of mode select switch)

Step

Action

Yes

No

1

  1. Turn the ignition switch off.
  2.  Remove the frame covers. Refer to “exterior parts removal and installation” in section 9d .
  3.  Check the fp relay coupler (1) for loose or poor contacts.

    If ok, then check the fp relay. Refer to “fuel pump relay inspection” in section 1g .


Is the fp relay ok?

  • Ecm power input signal malfunction.

    Refer to “dtc “c41” (p2505): ecm power input signal malfunction” .

  •  Y/b or o/w wire open or short or poor “40” connection.
  •  Y/r or r/bl wire open, shorted or poor “24” connection.
  •  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 .
Replace the fp relay with a new one.

P0230-h (use of sds)

Step

Action

Yes

No

1

  1. Turn the ignition switch off.
  2.  Remove the frame covers. Refer to “exterior parts removal and installation” in section 9d .
  3.  Check the fp relay coupler (1) for loose or poor contacts.

    If ok, then check the fp relay. Refer to “fuel pump relay inspection” in section 1g .


Is the fp relay ok?

  • Y/b wire shorted to power source.
  •  Y/b wire shorted to ground.
  •  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 .
Replace the fp relay with a new one.

P0230-l (use of sds)

Step

Action

Yes

No

1

  1. Turn the ignition switch off.
  2.  Remove the frame covers. Refer to “exterior parts removal and installation” in section 9d .
  3.  Check the fp relay coupler (1) for loose or poor contacts.

    If ok, then check the fp relay. Refer to “fuel pump relay inspection” in section 1g .


Is the fp relay ok?

  • Y/b wire open or poor “40” connection.
  •  O/w wire open or shorted to ground.
  •  R/bl or y/r wire open or shorted to ground, or poor “24” connection.
  •  If wire and connection are ok, intermittent trouble of 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 .
Replace the fp relay with a new one.
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