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:

Gearshift lever construction
Gearshift lever bracket Gearshift lever shaft Washer Snap ring Gearshift lever Footrest top surface 65 – 75 Mm (2.6 – 3.0 In) 28 N·m (2.8 Kgf-m, 20.0 Lbf-ft) 40 N·m (4.0 Kgf-m, 29.0 Lbf-ft) Apply grease. Grease. ...

Rear shock absorber inspection
Refer to “rear shock absorber removal and installation” . Shock absorber Inspect the rear shock absorber for damage and oil leakage, and absorber bushing for wear and damage. If any defect is found, replace the rear shock absorber with a new one. Caution do not attempt to disassemble ...

Air cleaner element inspection
Inspect air cleaner element every 6 000 km (4 000 miles, 12 months) Inspection Remove the air cleaner element. Refer to “air cleaner element removal and installation” in section 1d .  Inspect the air cleaner element for clogging. If it is clogged with dirt, replace it with a new on ...

© 2011-2026 Copyright www.suzukigsxr.org