Component Tests and General Diagnostics
IDLE AND/OR 2,500 RPM CO / HC CHECKNOTE: This check is used only to determine whether or not the idle CO / HC complies with regulations.
1. INITIAL CONDITIONS
- Engine at normal operating temperature
- Air cleaner installed
- All pipes and hoses of air induction system connected
- All accessories switched OFF
- All vacuum hoses for EGR systems, etc. should be properly connected.
- MFI system wiring connectors fully plugged
- Ignition timing set correctly
- Transmission in neutral position
- Tachometer and CO / HC meter calibrated by hand
2. START ENGINE
3. RACE ENGINE AT 2,500 RPM FOR APPROX. 180 SECONDS
4. INSERT CO / HC METER TESTING PROBE AT LEAST 40 cm (1.3 ft) INTO TAILPIPE DURING IDLING
5. IMMEDIATELY CHECK CO / HC CONCENTRATION AT IDLE AND/OR 2,500 RPM
HINT: When doing the 2 mode (2,500 rpm and idle) test, follow the measurement order prescribed by the applicable local regulations.
If the CO / HC concentration does not comply with regulations, refer to "Diagnosis By Symptom".