Connect the Honda Diagnostic System (HDS) to the data link connector (DLC), and check for DTCs. If a DTC is present, diagnose and repair the cause before continuing with this test. Disconnect the alternator 4P connector from the alternator. Start the engine, and turn on the headlights to high beam. Measure the voltage between alternator 4P connector terminal No. 2 and the positive terminal of the battery. Is there 1 V or less?
YES | - | Go to Step 5 .
NO | - | Go to Step 8 .
Jump the SCS line with the HDS, then turn the ignition switch OFF. NOTE: This step must be done to protect the engine control module (ECM)/powertrain control module (PCM) from damage. Disconnect ECM/PCM connector B (24P). |