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:

Steering / steering damper related parts inspection
Refer to “steering / steering damper removal and installation” . Inspect the removed parts for the following abnormalities: Steering stem Distortion of the steering stem and brackets. Bearing Bearing wear or damage  abnormal bearing noise  race wear or damage &nbs ...

Starter torque limiter inspection
Removal Remove the clutch cover. Refer to “clutch removal” in section 5c .  Remove the washers (1), starter idle gear no. 1 (2) And no. 2 (3). Remove the starter idle gear no. 2 Bearing (4), shaft (5) and washer (6). Hold the starter clutch with the special tool an ...

Cooling system inspection
Inspect cooling system every 6 000 km (4 000 miles, 6 months) Replace engine coolant every 2 years Engine coolant level inspection Hold the motorcycle vertically.  Check the engine coolant level by observing the “f” and “l” lines on the engine coolant reservoir tank. If the level i ...

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