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): 0990025008 (multi circuit tester set) (b): 0990025009 (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:

Excva pulley inspection
Inspect the excva pulley in the following procedures:  remove the excva pulley. Refer to excv cable removal and installation .  Visually inspect the excva pulley for wear and damage. If there is anything unusual, replace the pulley with a new one. Install the pulle ...

Balancer shaft journal bearing inspection and selection
Refer to engine bottom side disassembly (page 1d- 49). Refer to engine bottom side assembly . Inspection Inspect the bearing surfaces for any signs of fusion, pitting, burn or flaws. If any, replace them with a specified set of bearings. Selection Place the plastigauge axial ...

Ckp sensor inspection
Refer to electrical components location in section 0a . Ckp sensor peak voltage Lift and support the fuel tank. Refer to fuel tank removal and installation in section 1g (page 1g- 9). Disconnect the ckp sensor coupler (1). Note be sure that all of the couplers are connect ...

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