Toyota RAV4 manuals

Suzuki GSX-R 1000 Service Manual: Dtc c36 (p1764), c37 (p1765), c38 (p1766) or c39 (p1767): secondary fuel injector circuit malfunction

Suzuki GSX-R 1000 Service Manual / Engine / Engine general information and diagnosis / Diagnostic information and procedures / Dtc c36 (p1764), c37 (p1765), c38 (p1766) or c39 (p1767): secondary fuel injector circuit malfunction

Detected condition and possible cause

Detected condition

Possible cause

Some failure exists in the fuel injector signal in a high load, high revolution condition.
  • Injector circuit open or short.
  •  Injector malfunction.
  •  Ecm malfunction.

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.  Lift and support the fuel tank. Refer to fuel tank removal and installation in section 1g .
  3.  Check the secondary fuel injector coupler (1) for loose or poor contacts.

    If ok, then measure the injector resistance.


  1. Disconnect the injector coupler and measure the resistance between terminals.

Special tool
(a): 0990025008 (multi
circuit tester set)

Tester knob indication resistance (Ω)

Injector resistance 11 13 Ω at 20 c (68 f) (terminal terminal)


  1. If ok, then check the continuity between each terminal and ground.

Special tool
(a): 0990025008 (multi
circuit tester set)

Injector continuity ∞Ω (infinity)


Are the resistance and continuity ok?

Go to step 2. Replace the injector with a new one. Refer to throttle body disassembly and assembly in section 1d .

2

  1. Turn the ignition switch on.
  2.  Measure the injector voltage between the y/r wire and ground.
Note

injector voltage can be detected only for 3 seconds after ignition switch is turned on.

Special tool
(a): 0990025008 (multi
circuit tester set)

Tester knob indication voltage ( )


Injector voltage battery voltage ((+) terminal: y/r () terminal: ground)


Is the voltage ok?

  • Lg wire open or shorted to ground, or poor 59 connection (#1 cylinder side).
  •  Lg/w wire open or shorted to ground, or poor 58 connection (#2 cylinder side).
  •  Lg/b wire open or shorted to ground, or poor 57 connection (#3 cylinder side).
  •  Lg/bl wire open or shorted to ground, or poor 56 connection (#4 cylinder side).
  •  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 circuit in the y/r wire.
Dtc c32 (p0201), c33 (p0202), c34 (p0203) or c35 (p0204): primary fuel injector circuit malfunction
Detected condition and possible cause Detected condition Possible cause Ckp signal is produced but fuel injector signal is interrupted by 4 times or more continuity ...

DTC c40 (p0505 / p0506 / p0507): isc valve circuit malfunction
Detected condition and possible cause Detected condition Possible cause C40/P0505 The circuit voltage of motor drive is unusual. Isc valve circuit open or ...

Other materials:

Gearshift lever
This motorcycle has a 6-speed transmission which operates as shown. To shift properly, squeeze the clutch lever and close the throttle at the same time you operate the gearshift lever. Lift the gearshift lever to upshift and depress the lever to downshift. Neutral is located between lo ...

Drive mode selector description
Engine power characteristics can be changed in 3 modes by operating the drive mode selector to meet various riding conditions and riders preference. Operation Drive mode is preset at a-mode when the ignition switch and engine stop switch are turned on. Follow the procedure below to operat ...

DTC c31 (p0705): gp switch circuit malfunction
Detected condition and possible cause Detected condition Possible cause No gear position switch voltage Gp switch voltage is not within the following range. Gp switch voltage > 0.6 V Gp switch circuit open or short.  Gp switch malfunction. ...

2011-2018 Copyright www.suzukigsxr.org