Motorcycle Tech Discussion Forum

The diagnostic plug is on the left hand side of the bike at the back. You may have to remove the left hand side rear fairing to get to it the first time. It can be relocated inside the trunk area for easy access. The White / Red trace and the Black / White trace are the wires that need to be jumped. You can use a paper clip inserted into the plug to jump the White / Red trace to Black / White trace together. This will put the ECU into diagnostic mode and trouble codes will be shown on the LCD spedo display. Use the list below to find your code and what the code indicates may be the problem.

Code List

• c11 Camshaft position sensor or circuit malfunction The signal does not reach to ECM for more than 4 sec. after receiving the starter signal. The CMP sensor wiring and mechanical parts. (CMP sensor, intake cam pin, wiring/coupler connection)

• c12 Crankshaft position sensor or circuit malfunction The signal does not reach to ECM for more than 4 sec. after receiving the starter signal. The CKP sensor wiring and mechanical parts.(CKP sensor, wiring/coupler connection)

• c13 Intake air pressure sensor malfunction The sensor produces following voltage. (0.5 V < or = sensor voltage < 4.85 V) Without the above range, c13 is indicated. Intake air pressure sensor, lead wire/coupler connection Low pressure - high vacuum - Low voltage (or IAP sensor circuit shorted to ground) Intake air pressure sensor circuit high input High pressure - Low vacuum - high voltage (or IAP sensor circuit open) IAP sensor, wiring/coupler connection.

• c14 Throttle position sensor malfunction The sensor produces following voltage. (0.2 V < or = sensor voltage < 4.8 V) Without the above range, c14 is indicated. Throttle position circuit Low input Low voltage (or TP sensor circuit shorted to ground) Throttle position circuit high input High voltage (or TP sensor circuit open) TP sensor, wiring/coupler connection.

• c15 Engine coolant temp. sensor malfunction The sensor voltage should be the following. (0.15 V < or = sensor voltage < 4.85 V) Without the above range, c15 is indicated. Engine coolant temp. circuit Low input High temperature - Low voltage (or ECT sensor circuit shorted to ground) Engine coolant temp. circuit high input Low temperature - high voltage (or ECT sensor circuit open) ECT sensor, wiring/coupler connection.

• c21 Intake air temp. sensor malfunction The sensor voltage should be the following. (0.15 V < or = sensor voltage < 4.85 V)Without the above range, c21 is indicated. Intake air temp. circuit Low input High temperature - Low voltage (or IAT sensor circuit shorted to ground) Intake air temp. circuit high input Low temperature - high voltage (or IAT sensor circuit open) IAT sensor, wiring/coupler connection.

• c22 Atmospheric pressure sensor malfunction The sensor voltage should be the following. (0.5 V < or = sensor voltage < 4.85 V) Without the above range, c22 is indicated. Atmospheric pressure sensor Low/high input Atmospheric pressure is lower or higher than specification. AP sensor, wiring/coupler connection.

• c23 Tip over sensor or circuit malfunction The sensor voltage is less than the following for more than8 sec. after ignition switch turns ON. (0.2 V < or = sensor voltage < 4.85 V) Without the above value, c23 is indicated. TO sensor, wiring/coupler connection.

• c24/c25/c26/c27 Ignition signal #1, #2, #3, #4 circuit malfunction CKP sensor (pick-up coil) signal is produced but signal from ignition coil is not produced continuous two times. In this case, the code c24 or C25 or C26 or c27 is indicated.

• c28 Secondary throttle valve actuator malfunction When no actuator control signal is supplied from the ECM or communication signal does not reach ECM or operation voltage does not reach STVA motor, C28 is indicated. STVA can not operate. STVA, lead wire / coupler connection.

• c29 Secondary throttle position sensor malfunction The sensor should produce the following voltage. 0.15V < sensor voltage < 4.85V. Without the above value, C29 is indicated. Secondary throttle position sensor, lead wire / coupler connection.

• c31 Gear position signal circuit malfunction Gear position signal voltage should be higher than the following for more than 3 seconds. (Gear position sensor voltage > 0.60 V) Without the above value, c31 is indicated. Gear position sensor, wiring/coupler connection.Gearshift cam etc.

• c32/c33/c34/c35 Fuel injector signal #1, #2, #3, #4 circuit malfunction Crankshaft position sensor (pickup coil) signal is produced, but fuel injector signal is interrupted continuous by 4 times or more. In this case the code C32, C33, C34 or C35 is indicated.

• c41 Fuel pump relay signal circuit malfunction When no signal from fuel pump relay, c41 is indicated. Fuel pump relay, connecting lead, power source to fuel pump relay.

• c42 Ignition switch signal circuit malfunction Ignition switch signal is not input in the ECM. Ignition switch, lead wire/coupler.

• c46 Exhaust control valve actuator EXCVA position sensor produces following voltage. 0.1V < sensor vlotage < 4.9V. Without the above value, C46 is indicated. EXCVA motor cannot move. EXCVA, EXCVA adjustment, lead wire / coupler.