| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000VI9V |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - 08/2016] |
| Title: 2GR-FE (ENGINE CONTROL): SFI SYSTEM: PROBLEM SYMPTOMS TABLE; 2016 MY Sienna [12/2015 - 08/2016] | ||
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.
SFI System
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
Engine does not crank (Does not start) |
Battery |
|
|
Starter assembly |
|
|
|
Starter relay |
|
|
|
Starter signal circuit |
|
|
|
Smart key system (for start function) |
|
|
|
Park/neutral position switch (for 2WD) |
|
|
|
Park/neutral position switch (for AWD) |
|
|
|
VC output circuit (w/ smart key system) |
|
|
|
No initial combustion (Does not start) |
ECM power source circuit |
|
|
VC output circuit (w/o smart key system) |
|
|
|
Crankshaft position sensor |
|
|
|
Ignition system |
|
|
|
Fuel pump control circuit |
|
|
|
Fuel pump |
|
|
|
Fuel injector circuit |
|
|
|
Valve timing |
|
|
|
VVT sensor (for intake side of bank1, 2) |
|
|
|
VVT sensor (for exhaust side of bank1, 2) |
|
|
|
Cranking holding function circuit |
|
|
|
Starter signal circuit |
|
|
|
Engine immobiliser system (w/ smart key system) |
|
|
|
Engine immobiliser system (w/o smart key system) |
|
|
|
ECM |
|
|
|
Engine cranks normally but difficult to start |
Fuel pump control circuit |
|
|
Fuel pump |
|
|
|
Fuel injector circuit |
|
|
|
ECM power source circuit |
|
|
|
Cranking holding function circuit |
|
|
|
Starter signal circuit |
|
|
|
Engine coolant temperature sensor |
|
|
|
Intake system |
|
|
|
Ignition system |
|
|
|
Spark plug |
|
|
|
Fuel injector assembly |
|
|
|
Compression |
|
|
|
Intake system |
|
|
|
Throttle body with motor assembly |
|
|
|
Incomplete intermittent combustion occurs (Does not start) |
Fuel pump control circuit |
|
|
Fuel pump |
|
|
|
Fuel line |
|
|
|
Ignition circuit |
|
|
|
Ignition system |
|
|
|
Fuel injector circuit |
|
|
|
Fuel injector assembly |
|
|
|
ECM power source circuit |
|
|
|
Cranking holding function circuit |
|
|
|
Starter signal circuit |
|
|
|
Crankshaft position sensor |
|
|
|
VVT sensor (for intake side of bank1, 2) |
|
|
|
VVT sensor (for exhaust side of bank1, 2) |
|
|
|
Engine immobiliser system (w/ smart key system) |
|
|
|
Engine immobiliser system (w/o smart key system) |
|
|
|
Valve timing |
|
|
|
High engine speed (Poor idle) |
Throttle body with motor assembly |
|
|
Intake system |
|
|
|
A/C signal circuit |
|
|
|
ECM power source circuit |
|
|
|
Engine coolant temperature sensor |
|
|
|
PCV valve and hose |
|
|
|
ACIS control circuit |
|
|
|
Low engine speed (Poor idle) |
Throttle body with motor assembly |
|
|
A/C signal circuit |
|
|
|
Fuel pump control circuit |
|
|
|
Fuel pump |
|
|
|
Intake system |
|
|
|
PCV valve and hose |
|
|
|
ACIS control circuit |
|
|
|
Engine stalls on deceleration |
Idle speed (refer to "Low engine speed") |
|
|
Rough idle |
Compression |
|
|
Ignition system |
|
|
|
Spark plug |
|
|
|
Fuel injector circuit |
|
|
|
ECM power source circuit |
|
|
|
Fuel pump control circuit |
|
|
|
Fuel pump |
|
|
|
Fuel line |
|
|
|
Throttle body with motor assembly |
|
|
|
Intake system |
|
|
|
PCV valve and hose |
|
|
|
Air fuel ratio sensor |
|
|
|
Heated oxygen sensor |
|
|
|
Mass air flow meter |
|
|
|
Knock sensor |
|
|
|
ACIS control circuit |
|
|
|
External part malfunction (Increase in load: A/C system, CVT system, etc.) |
- |
|
|
Hunting (Poor idling) |
Throttle body with motor assembly |
|
|
Intake system |
|
|
|
PCV valve and hose |
|
|
|
Air fuel ratio sensor |
|
|
|
Mass air flow meter |
|
|
|
ACIS control circuit |
|
|
|
Hesitation/Poor acceleration |
Fuel pump control circuit |
|
|
Fuel pump |
|
|
|
Fuel line |
|
|
|
Spark plug |
|
|
|
Ignition system |
|
|
|
Fuel injector circuit |
|
|
|
ECM power source circuit |
|
|
|
Mass air flow meter |
|
|
|
Throttle body with motor assembly |
|
|
|
Intake system |
|
|
|
Valve timing |
|
|
|
Compression |
|
|
|
Brake override system |
|
|
|
Surging (Poor driveability) |
Spark plug |
|
|
Fuel pump control circuit |
|
|
|
Fuel pump |
|
|
|
Ignition system |
|
|
|
Fuel injector circuit |
|
|
|
Fuel injector assembly |
|
|
|
ECM power source circuit |
|
|
|
Mass air flow meter |
|
|
|
Variable Valve Timing (VVT) system |
|
|
|
Compression |
|
|
|
Engine stalls soon after starting |
Fuel pump control circuit |
|
|
Fuel pump |
|
|
|
Spark plug |
|
|
|
Ignition system |
|
|
|
Fuel injector circuit |
|
|
|
ECM power source circuit |
|
|
|
Mass air flow meter |
|
|
|
Variable Valve Timing (VVT) system |
|
|
|
Throttle body with motor assembly |
|
|
|
Intake system |
|
|
|
PCV valve and hose |
|
|
|
Compression |
|
|
|
Engine stalls only during A/C operation |
A/C signal circuit |
|
|
ECM |
|
|
|
Engine vibrates frequently when idling (Active control engine mount system) |
Active control engine mount system |
|
|
Unable/difficult to refuel |
Fuel system (canister, rollover valve, fuel tank etc.) |
- |
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