Ignition Timing Inspection

Check the idle speed, and adjust it if necessary (see IDLE SPEED ADJUSTMENT ).
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).
Start the engine. Hold the engine at 3,000 RPM with no load (A/T in [N ] or [P ], M/T in neutral) until the radiator fan comes on, then let it idle.
Connect the timing light to the No. 1 ignition wire, then point the light toward the pointers (A) on the timing belt cover. Check the ignition timing in no load conditions: headlights, blower fan, rear window defogger, and air conditioner are not operating.
Ignition Timing:
1. M/T: 12° +/- 2° BTDC (RED mark (B)) during idling in neutral
2. A/T: 12° +/- 2° BTDC (RED mark (B)) during idling in [P] or [N]
Fig 1: Locating Timing Marks
Courtesy of AMERICAN HONDA MOTOR CO., INC.
If the ignition timing is incorrect, replace the ECM/ PCM. (Ignition timing is not adjustable.)
Disconnect the Honda PGM Tester and the timing light.