Suzuki GSX-R 1000 Service Manual: DTC “c11” (p0340): cmp sensor circuit malfunction

Suzuki GSX-R 1000 Service Manual / Engine / Engine general information and diagnosis / Diagnostic information and procedures / DTC “c11” (p0340): cmp sensor circuit malfunction

Detected condition and possible cause

Detected condition

Possible cause

The signal does not reach ecm for 3 sec. Or more, after receiving the starter signal.

Cmp sensor circuit open or short.
Cmp sensor 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

Turn the ignition switch off.
Lift and support the fuel tank. Refer to “fuel tank removal and installation” in section 1g .
Remove the air cleaner box. Refer to “air cleaner box removal and installation” in section 1d .
Check the cmp sensor coupler (1) for loose or poor contacts.

If ok, remove the cmp sensor. Refer to “cmp sensor removal and installation” in section 1c .

Connect 3 new 1.5 V batteries in series, 1 kΩ resistor and the multi-circuit tester as shown in the figure.

Special tool : 09900–25008 (multi circuit
tester set)

Tester knob indication voltage ( )

Under this condition, if a suitable screwdriver touching the pick-up surface of the cmp sensor is moved, the tester reading voltage changes (0.8 V and less . 4.3 V and more).

Is the voltage ok?

B/y, r or b/br wire open or shorted to ground.
Loose or poor contacts on the cmp sensor coupler or ecm coupler (terminal “7”, “8” or “35”).
If wires 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.
B/y, r or b/br wire open or shorted to ground.
Loose or poor contacts on the cmp sensor coupler or ecm coupler (terminal “7”, “8” or “35”).
If wires 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.

Inspect that metal particles or foreign material stuck on the cmp sensor and camshaft tip.
If there are no metal particles and foreign material, then replace the cmp sensor with a new one.
Inspect that metal particles or foreign material stuck on the cmp sensor and camshaft tip.
If there are no metal particles and foreign material, then replace the cmp sensor with a new one.

Malfunction code and defective condition table

* : Immobilizer system equipped model only. ...

DTC “c12” (p0335): ckp sensor circuit malfunction.

Detected condition and possible cause Detected condition Possible cause The signal does not reach ecm for 3 sec. Or more, after receiving the starter signal. ...

Other materials:

Iat sensor inspection
Refer to “dtc “c21” (p0110-h/l): iat sensor circuit malfunction” in section 1a . Inspect the iat sensor. Note iat sensor resistance measurement method is the same way as that of the ect sensor. Refer to “ect sensor inspection” (page 1c- 4). Caution & ...

Engine assembly removal
Before taking the engine out of the frame, wash the engine using a steam cleaner. Engine removal is sequentially explained in the following steps: remove the side cowlings. Refer to “exterior parts removal and installation” in section 9d (page 9d- 6). Remove the front seat. R ...

Break-in procedures
During manufacture only the best possible materials are used and all machined parts are finished to a very high standard but it is still necessary to allow the moving parts to “break-in” before subjecting the engine to maximum stresses. The future performance and reliability of the engine depen ...