NO. 9 Fast Idle/Runs On: Notes
NO. 9 FAST IDLE/RUNS ON (SKYACTIV-G 2.5 - WITH CYLINDER DEACTIVATION) DESCRIPTION AND POSSIBLE CAUSE
| 9 |
FAST IDLE/RUNS ON |
| DESCRIPTION |
- Engine speed continues at fast idle after warm-up.
- Engine runs after ignition is switched off.
|
| POSSIBLE CAUSE |
- Cooling system malfunction
- PCM DTC is stored
- Accelerator pedal stuck depressed
- Erratic signal to PCM
- APP sensor or related circuit malfunction
- Communication error between TCM and PCM
- ECT sensor or related circuit malfunction
- A/F sensor or related circuit malfunction
- HO2S or related circuit malfunction
- Improper load signal input
- Improper A/C request signal
- Improper operation of drive-by-wire control system
- Throttle body malfunction
- Fuel injector malfunction
- Spill valve control solenoid valve (built-into high pressure fuel pump) malfunction
- Air leakage from intake-air system
- Injector driver (built-into 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 injury 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 the applicable service information below.(See Before Service Precaution
.) (See After Service Precaution
.)
CAUTION:
- Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the 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 matter.
|
CAUTION:
- Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.