Ignition Timing: Testing and Inspection
Ignition Timing Inspection1. Start the engine. Hold the engine at 3,000 rpm with no load (in Park or Neutral) until the radiator fan comes on, then let it idle.
2. Check the idle speed, and adjust it if necessary.
3. Connect the Honda PGM Tester to the data link connector (DLC), and follow the tester's prompts in the "SCS" menu (see the Honda PGM Tester Operator's Manual).
4. Connect the timing light to the No.1 ignition coil wire.
5. Point the light toward the pointer (A) on the timing belt cover. Check the ignition timing under no load conditions: headlights, blower fan, rear window defogger, and air conditioner are not operating. If the ignition timing differs from the specification given, replace the power-train control module (PCM).
6. Disconnect the Honda PGM Tester.