Ignition Timing Inspection
  1. Connect the Honda Diagnostic System (HDS) to the data link connector (DLC).
  1. Turn the ignition switch ON (II).
  1. Make sure the HDS communicates with the vehicle and the engine control module (ECM). If it doesn't communicate, troubleshoot the DLC circuit.
  1. Start the engine. Hold the engine speed at 3,000 rpm (min −1 ) without load (in Neutral) until the radiator fan comes on, then let it idle.
  1. Check the idle speed.
  1. Select ‘‘SCS'' mode using the HDS.
  1. Connect the timing light to the service loop (white tape).