No. 15 Emission Compliance: Notes

POSSIBLE CAUSES DESCRIPTIONS

15	Emission compliance
DESCRIPTION	Emission compliance test failed.
POSSIBLE CAUSE	Vacuum lines leakage or blockage Cooling system malfunction Spark plug malfunction Air leakage from intake manifold Erratic or no signal from CMP sensor Inadequate fuel pressure PCV valve malfunction or incorrect valve installation EGR valve malfunction Exhaust system clogging Fuel tank ventilation system malfunction Charcoal canister damage Air cleaner element clogging or restriction Throttle body malfunction Ignition coil or related circuit malfunction. Improper air/fuel mixture ratio control operation Excessive carbon built up in combustion chamber Improper engine compression Improper valve timing Catalyst converter malfunction Engine internal parts malfunction WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: 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 REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual. (See BEFORE REPAIR PROCEDURE ). (See AFTER REPAIR PROCEDURE ). CAUTION: Disconnecting/connecting quick release connector without cleaning it may possibly cause damage to fuel pipe and quick release connector. Always clean quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

Emission compliance

DESCRIPTION

Emission compliance test failed.

POSSIBLE CAUSE

Vacuum lines leakage or blockage
Cooling system malfunction
Spark plug malfunction
Air leakage from intake manifold
Erratic or no signal from CMP sensor
Inadequate fuel pressure
PCV valve malfunction or incorrect valve installation
EGR valve malfunction
Exhaust system clogging
Fuel tank ventilation system malfunction
Charcoal canister damage
Air cleaner element clogging or restriction
Throttle body malfunction
Ignition coil or related circuit malfunction.
Improper air/fuel mixture ratio control operation
Excessive carbon built up in combustion chamber
Improper engine compression
Improper valve timing
Catalyst converter malfunction
Engine internal parts malfunction
WARNING:
- The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services:
  - 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 REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual.
    (See BEFORE REPAIR PROCEDURE ).
    
    (See AFTER REPAIR PROCEDURE ).
CAUTION:
- Disconnecting/connecting quick release connector without cleaning it may possibly cause damage to fuel pipe and quick release connector. Always clean quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.