Problem Symptoms Table
HINT:
Use the table below to help determine the cause of the problem symptom. The potential cases of the symptoms are listed in order of probability in the "Suspected area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
PROBLEM SYMPTOMS CHART
| Symptom | Suspected area |
|---|---|
| Engine does not crank (Does not start) | Immobilizer System See HOW TO PROCEED WITH TROUBLESHOOTING |
| Starter See INSPECTION |
|
| Starter relay See ON-VEHICLE INSPECTION |
|
| Park/neutral position switch See ON-VEHICLE INSPECTION |
|
| No initial combustion (Does not start) | ECM power source circuit See ECM POWER SOURCE CIRCUIT |
| FUEL PUMP CONTROL CIRCUIT | |
| ECM | |
| Engine cranks normally but difficult to start | FUEL PUMP CONTROL CIRCUIT |
| Compression See ON-VEHICLE INSPECTION |
|
| Difficult to start with cold engine | CRANKING HOLDING FUNCTION CIRCUIT |
| Ignition system See ON-VEHICLE INSPECTION |
|
| Spark plug See ON-VEHICLE INSPECTION |
|
| FUEL PUMP CONTROL CIRCUIT | |
| Injector See INSPECTION |
|
| Difficult to start with worm engine | CRANKING HOLDING FUNCTION CIRCUIT |
| Injector See INSPECTION |
|
| Ignition system See ON-VEHICLE INSPECTION |
|
| Spark plug See ON-VEHICLE INSPECTION |
|
| FUEL PUMP CONTROL CIRCUIT | |
| High engine idle speed (Poor idling) | ECM POWER SOURCE CIRCUIT |
| A/C signal circuit (compressor circuit) | |
| ELECTRONIC THROTTLE CONTROL SYSTEM | |
| Air induction system See ON-VEHICLE INSPECTION |
|
| PCV hose | |
| Low engine idle speed (Poor idling) | A/C signal circuit (compressor circuit) |
| FUEL PUMP CONTROL CIRCUIT | |
| ELECTRONIC THROTTLE CONTROL SYSTEM | |
| Air induction system See ON-VEHICLE INSPECTION |
|
| PCV hose | |
| Rough idling (Poor idling) | Compression See ON-VEHICLE INSPECTION |
| FUEL PUMP CONTROL CIRCUIT | |
| ELECTRONIC THROTTLE CONTROL SYSTEM | |
| Air induction system See ON-VEHICLE INSPECTION |
|
| PCV hose | |
| Hunting (Poor idling) | ECM POWER SOURCE CIRCUIT |
| FUEL PUMP CONTROL CIRCUIT | |
| Spark plug See ON-VEHICLE INSPECTION |
|
| Ignition system See ON-VEHICLE INSPECTION |
|
| Injector See INSPECTION |
|
| ELECTRONIC THROTTLE CONTROL SYSTEM | |
| Air induction system See ON-VEHICLE INSPECTION |
|
| PCV hose | |
| Hesitation/ Poor acceleration (Poor driveability) | FUEL PUMP CONTROL CIRCUIT |
| Spark plug See ON-VEHICLE INSPECTION |
|
| Ignition system See ON-VEHICLE INSPECTION |
|
| Injector See INSPECTION |
|
| Surging (Poor driveability) | Spark plug See ON-VEHICLE INSPECTION |
| FUEL PUMP CONTROL CIRCUIT | |
| Ignition system See ON-VEHICLE INSPECTION |
|
| Injector See INSPECTION |
|
| Engine stalls soon after starting | FUEL PUMP CONTROL CIRCUIT |
| Spark plug See ON-VEHICLE INSPECTION |
|
| Ignition system See ON-VEHICLE INSPECTION |
|
| Injector See INSPECTION |
|
| Vacuum sensor circuit | |
| Engine stalls during A/C operation | A/C signal circuit (Compressor circuit) |
| ECM | |
| Cold start injector See INJECTOR DRIVER |
|
| Unable/difficult refuel | Refueling valve (canister) |