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
| Symptom | Suspected Area | Refer To |
|---|---|---|
| Engine does not crank (does not start) | Cranking holding function circuit | Refer to Cranking Holding Function Circuit |
| Starter | Refer to INSPECTION | |
| Starter relay | Refer to INSPECTION | |
| VC output circuit | Refer to VC Output Circuit | |
| No initial combustion (does not start) | ECM power source circuit | Refer to ECM Power Source Circuit |
| VC output circuit | Refer to VC Output Circuit | |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| ECM | Refer to REMOVAL | |
| No complete combustion (does not start) | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Difficult to start (engine cranks normally) | Starter signal circuit | Refer to DTC P0617: Starter Relay Circuit High |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Compression | Refer to ON-VEHICLE INSPECTION - Step 10 | |
| Difficult to start (with cold engine) | Starter signal circuit | Refer to DTC P0617: Starter Relay Circuit High |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Difficult to start (with hot engine) | Starter signal circuit | Refer to DTC P0617: Starter Relay Circuit High |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| High engine idle speed (poor idling) | A/C signal circuit (compressor circuit) | Refer to Compressor Circuit |
| ECM power source circuit | Refer to ECM Power Source Circuit | |
| Low engine idle speed (poor idling) | A/C signal circuit (compressor circuit) | Refer to Compressor Circuit |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Rough idling (poor idling) | Compression | Refer to ON-VEHICLE INSPECTION - Step 10 |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Hunting (poor idling) | ECM power source circuit | Refer to ECM Power Source Circuit |
| Fuel pump control circuit | Refer to Fuel Pump Control Circuit | |
| Hesitation/Poor acceleration (Poor driveability) | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| A/T faulty | - | |
| Engine stalls during A/C operation | A/C signal circuit (Compressor circuit) | Refer to Compressor Circuit |
| ECM | Refer to REMOVAL | |
| Surging (Poor driveability) | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |
| Unable to refuel/Difficult to refuel | ORVR system | Refer to INSPECTION - Step 1 |
| Engine stalls soon after starting | Fuel pump control circuit | Refer to Fuel Pump Control Circuit |