Problem Symptoms Table
HINT:
Use the table below to help determine the cause of the problem symptom. The potential causes 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.
2UZ-FE SFI SYSTEM
2UZ-FE SFI SYSTEM
| Symptom | Suspected Area | Information |
|---|---|---|
| Engine does not crank (does not start) | Cranking holding function circuit | CRANKING HOLDING FUNCTION CIRCUIT |
| Starter | INSPECTION | |
| Starter relay | INSPECTION | |
| VC output circuit | VC OUTPUT CIRCUIT | |
| No initial combustion (does not start) | ECM power source circuit | ECM POWER SOURCE CIRCUIT |
| VC output circuit | VC OUTPUT CIRCUIT | |
| Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| ECM | REMOVAL | |
| No complete combustion (does not start) | Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT |
| Difficult to start (engine cranks normally) | Starter signal circuit | DTC P0617: STARTER RELAY CIRCUIT HIGH |
| Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| Compression | ON-VEHICLE INSPECTION | |
| Difficult to start (with cold engine) | Starter signal circuit | DTC P0617: STARTER RELAY CIRCUIT HIGH |
| Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| Difficult to start (with hot engine) | Starter signal circuit | DTC P0617: STARTER RELAY CIRCUIT HIGH |
| Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| High engine idle speed (poor idling) | A/C signal circuit (compressor circuit) | COMPRESSOR CIRCUIT |
| ECM power source circuit | ECM POWER SOURCE CIRCUIT | |
| Low engine idle speed (poor idling) | A/C signal circuit (compressor circuit) | COMPRESSOR CIRCUIT |
| Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| Rough idling (poor idling) | Compression | ON-VEHICLE INSPECTION |
| Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| Hunting (poor idling) | ECM power source circuit | ECM POWER SOURCE CIRCUIT |
| Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT | |
| Hesitation/Poor acceleration (Poor driveability) | ECM power source circuit | ECM POWER SOURCE CIRCUIT |
| A/T faulty | - | |
| Engine stalls during A/C operation | A/C signal circuit (Compressor circuit) | COMPRESSOR CIRCUIT |
| ECM | REMOVAL | |
| Surging (Poor driveability) | Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT |
| Unable to refuel/Difficult to refuel | ORVR system | REMOVAL |
| Engine stalls soon after starting | Fuel pump control circuit | FUEL PUMP CONTROL CIRCUIT |