Toyota Corolla Cross: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, 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.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
|
Symptom | Suspected Area |
Link |
|---|---|---|
|
Engine does not crank (Does not start) |
Hybrid control system |
|
|
VC output circuit (ECM 5 V output) |
| |
|
No initial combustion (Does not start) |
ECM power source circuit |
|
|
VC output circuit (ECM 5 V output) |
| |
|
Ignition system |
| |
|
Fuel pump control circuit |
| |
|
Port fuel injector assembly |
| |
|
Direct fuel injector assembly |
| |
|
Fuel pump (for low pressure side) |
| |
|
Crankshaft position sensor |
| |
|
Intake system |
| |
|
Valve timing |
| |
|
EGR valve assembly |
| |
|
Engine cranks normally but difficult to start |
ECM power source circuit |
|
|
Throttle body with motor assembly |
| |
|
Fuel pump assembly (for high pressure side) |
| |
|
Fuel pump (for low pressure side) |
| |
|
Engine coolant temperature sensor |
| |
|
Fuel pump control circuit |
| |
|
Ignition system |
| |
|
Spark plug |
| |
|
Compression |
| |
|
Port fuel injector assembly |
| |
|
Direct fuel injector assembly |
| |
|
Crankshaft position sensor |
| |
|
Intake system |
| |
|
Valve timing |
| |
|
EGR valve assembly |
| |
|
Incomplete intermittent combustion occurs (Does not start) |
Fuel pump control circuit |
|
|
Fuel pump (for low pressure side) |
| |
|
Ignition system |
| |
|
Port fuel injector assembly |
| |
|
Direct fuel injector assembly |
| |
|
Crankshaft position sensor |
| |
|
Intake system |
| |
|
Valve timing |
| |
|
High engine speed | Throttle body with motor assembly |
|
|
ECM power source circuit |
| |
|
PCV system |
| |
|
Low engine speed (Poor idle) |
Fuel pump control circuit |
|
|
Throttle body with motor assembly |
| |
|
Port fuel injector assembly |
| |
|
Direct fuel injector assembly |
| |
|
Fuel pump assembly (for high pressure side) |
| |
|
PCV system |
| |
|
Intake system |
| |
|
Rough idle | Rough idling |
|
|
Throttle body with motor assembly |
| |
|
Port fuel injector assembly |
| |
|
Direct fuel injector assembly |
| |
|
Fuel pump assembly (for high pressure side) |
| |
|
Ignition system |
| |
|
Air fuel ratio sensor (sensor 1) |
| |
|
Air fuel ratio sensor (sensor 2) |
| |
|
Mass air flow meter sub-assembly |
| |
|
E.F.I. vacuum sensor assembly |
| |
|
Compression |
| |
|
Fuel pump control circuit |
| |
|
Spark plug |
| |
|
Intake system |
| |
|
Valve timing |
| |
|
EGR valve assembly |
| |
|
Hunting (Poor idle) | Throttle body with motor assembly |
|
|
ECM power source circuit |
| |
|
Fuel pump control circuit |
| |
|
Spark plug |
| |
|
Intake system |
| |
|
Drive start control |
| |
|
Hesitation/Poor acceleration (Poor driveability) |
Port fuel injector assembly |
|
|
Direct fuel injector assembly |
| |
|
Fuel pump control circuit |
| |
|
Fuel pump assembly (for high pressure side) |
| |
|
Ignition system |
| |
|
Spark plug |
| |
|
Intake system |
| |
|
Valve timing |
| |
|
Brake override system |
| |
|
Drive start control |
| |
|
Surging (Poor driveability) |
Fuel pump control circuit |
|
|
Fuel pump (for low pressure side) |
| |
|
Spark plug |
| |
|
Port fuel injector assembly |
| |
|
Direct fuel injector assembly |
| |
|
Engine stalls soon after starting |
Fuel pump control circuit |
|
|
Throttle body with motor assembly |
| |
|
Crankshaft position sensor |
| |
|
Ignition system |
| |
|
Fuel pump assembly (for high pressure side) |
| |
|
Intake system |
| |
|
Valve timing |
| |
|
EGR valve assembly |
| |
|
MIL (Malfunction Indicator Lamp) malfunction |
MIL Circuit |
|
|
Meter/Gauge system |
|
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