| POSSIBLE CAUSE |
- Drive-by-wire control system operates with brake override system
- Poor fuel quality
- Air leakage from intake-air system
- Air cleaner restriction
- Restriction in intake-air system
- Vacuum leakage
- Clutch slippage (MTX)
- Brake dragging
- Continuous memory DTC is stored
- Engine overheating
- Intake air temperature is too hot
- Erratic signal to PCM
- APP sensor or related wiring harness malfunction
- TP sensor or related wiring harness malfunction
- MAF sensor or related wiring harness malfunction
- IAT sensor or related wiring harness malfunction
- CKP sensor or related wiring harness malfunction
- VSS or related wiring harness malfunction (ATX)
- CKP sensor and teeth of the crankshaft pulley
- Spark plug malfunction
- Improper operation of drive-by-wire control system
- Restriction in exhaust system
- Inadequate fuel pressure
- Fuel pump relay or fuel pump circuit malfunction
- Restriction in fuel line
- Pressure regulator malfunction (built-in fuel pump unit)
- Fuel pump mechanical malfunction
- Improper operation of variable tumble control
- Improper operation of A/C system
- Purge solenoid valve malfunction
- EVAP control system malfunction
- CMP sensor and projections of the camshaft pulley malfunction
- Improper operation of EGR control system
- Improper operation of variable valve timing control system
- Low engine compression
- PCV valve malfunction
- Brake dragging
- Clutch malfunction (MTX)
- ATX malfunction (ATX)
- Valve timing malfunction
- PCM 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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" described in this repair information. (See AFTER SERVICE PRECAUTION
.)
CAUTION:
- Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to fuel pipe and 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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