The rpm of the engineRefer to the Fault Conditions And Possible Causes in Table 2.This trouble code is signaled by your heated exhaust oxygen sensor, or HO2S. The actual length of time for the charging current to decrease to 10 amperes depends on the following conditions:

Refer to the Fault Conditions And Possible Causes in Table 2.Īfter ten minutes of engine operation, the charging current should decrease to approximately 10 amperes. Inspect the battery for damage.Īfter approximately ten minutes of operating the engine at full throttle, the output voltage of the alternator should be 14.0 0.5 volts. Follow the procedures in the Tool Operating Manual, SEHS7633 in order to test the battery. The alternator operates within the specifications. Follow the procedures that are in the Tool Operating Manual, SEHS7633 in order to test the battery. The voltage consistently exceeds specifications. Turn on all accessories in order to verify that the voltage stays within specifications. The alternator and the battery match the specifications. ĭecreases after matching specifications Replace the alternator. If the voltage decreases below the specifications, replace the alternator. Check the circuit of the ignition switch. Less than the specifications Replace the alternator. The Voltage Is Above Specifications After 10 Minutes. The Voltage Is Within Specifications After 10 Minutes. Refer to Specifications, 'Alternator and Regulator' for the correct minimum full load current.Ĭurrent At Start-up The Voltage Is Below Specifications After 10 Minutes. The initial charging current should be equal to the minimum full load current or greater than the minimum full load current. Start the engine and run the engine at full throttle.Ĭheck the output current of the alternator. Jump start the engine or charge the battery before the engine is started.

If the battery has a low charge, do not perform this step. Note: Cranking the engine for 30 seconds partially discharges the batteries in order to do a charging test.

If the electrical system appears to operate correctly, crank the engine again for 30 seconds. Wait for two minutes in order to cool the starting motor. Put the ammeter around the positive output wire of the alternator. Put the negative '-' lead on the ground terminal or on the frame of the alternator. Put the positive lead '+' of the multimeter on the 'Bat' terminal of the alternator.

Dipstick 2272 batteries