Ignition Timing: Testing and Inspection
Ignition Timing Inspection1. Check the idle speed, and adjust it if necessary.
2. Connect the Honda PGM Tester to the Data Link Connector (DLC), and follow the tester's prompts to get the tester in the "SCS" mode (see the Honda PGM Tester Operator's Manual).
3. Start the engine. Hold the engine at 3,000 rpm with no load (in Neutral) until the radiator fan comes on, then let it idle.
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 condition: headlights, blower fan, rear window defogger, and air conditioner are not operating. If the ignition timing differs from the specification shown, check the cam timing, and the TDC and CKP sensors. If necessary, substitute a known-good powertrain control module (PCM), and recheck (PCM).