No. 15 Emission Compliance: Notes
NO. 15 EMISSION COMPLIANCE DESCRIPTION AND POSSIBLE CAUSE
| 15 |
EMISSION COMPLIANCE |
| DESCRIPTION |
|
| POSSIBLE CAUSE |
- Electrical connector disconnected
- Intake air system and air cleaner element malfunction
- Vacuum lines leakage or blockage
- PCM DTC is stored.
- Cooling system malfunction
- Fuel-filler cap malfunction
- A/F sensor malfunction
- Spark plug malfunction
- Improper operation of ignition system
- Erratic or no signal from CMP sensor
- Excessive or insufficient fuel pressure
- Fuel pump relay or fuel pump circuit malfunction
- Restriction in fuel line
- Pressure regulator malfunction (built-into fuel pump unit)
- Fuel pump unit malfunction
- Charcoal canister malfunction
- Exhaust system restricted
- TWC malfunction
- Base engine malfunction
- Improper engine compression
- EGR system malfunction
- Improper valve timing
- PCV valve malfunction
WARNING:
- The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before servicing the fuel system:
- Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.
- Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" described in this service information. (See BEFORE SERVICE PRECAUTION
.) (See AFTER SERVICE PRECAUTION
.)
CAUTION:
- Disconnecting/connecting the quick release connector without cleaning it may cause damage to the fuel pipe and the quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.
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