Toyota RAV4 manuals

Suzuki GSX-R 1000 Service Manual: DTC “c41” (p2505): ecm power input signal malfunction

Detected condition and possible cause

Detected condition

Possible cause

C41/P2505

No voltage is applied to the ecm.
  • Lead wire/coupler connection of ecm terminal to fuel fuse.
  • Fuel fuse.

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.  Remove the front seat. Refer to “exterior parts removal and installation” in section 9d .
  3.  Check the ecm coupler for loose or poor contacts. If ok, then measure the ecm input voltage.


  1. Disconnect the ecm coupler. Refer to “ecm removal and installation” in section 1c .
  2.  Insert the needle pointed probe to ecm coupler.
  3.  Measure the voltage between terminal “10” and ground.

Special tool
(a): 09900–25008 (multi circuit tester set) (b): 09900–25009 (needle-point probe set)

Tester knob indication voltage ( )

Ecm input voltage battery voltage ((+) terminal: “10” – (–) terminal: ground)

Ecm couplers (harness side)


Is the voltage ok?

  • Fuel pump relay circuit malfunction.

    Refer to “dtc “c41” (p0230-h/l): fp relay circuit malfunction” .

  •  R/bl wire open or short or poor “10” connection.
  •  Power source of speedometer shorted to the grand or open.
  •  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 or short circuit in the r/bl wire.
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. ...

DTC “c42” (p1650): ig switch circuit malfunction
Detected condition and possible cause Detected condition Possible cause Ignition switch signal is not input to the ecm. Ignition system circuit open or short. ...

Other materials:

Ignition switch removal and installation
Removal Remove the air cleaner box. Refer to “air cleaner box removal and installation” in section 1d .  Disconnect the ignition switch lead wire coupler (1).  Disconnect the immobilizer lead wire coupler (2). (For e-02, 19, 24, 51) Remove the harness clamp (3). ...

Fuel injection system description
Gsx-r1000 motorcycles are equipped with a fuel injection system for emission level control. This fuel injection system is precision designed, manufactured and adjusted to comply with the applicable emission limits. With varying engine conditions, all of the fuel injection volumes are precisely ...

Modification
Modification of the motorcycle, or removal of original equipment may render the vehicle unsafe or illegal. Obey all applicable equipment regulations in your area. The frame of this motorcycle is made of an aluminum alloy. Therefore, never make any modifications such as drilling or weldin ...

© 2011-2026 Copyright www.suzukigsxr.org