Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000001DLVT
Model Year Start: 2019 Model: Sienna Prod Date Range: [08/2018 -           ]
Title: 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: PROBLEM SYMPTOMS TABLE; 2019 - 2020 MY Sienna [08/2018 -        ]

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

Link

Engine does not crank (Does not start)

Battery

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS BATTERY / CHARGING: CHARGING SYSTEM: ON-VEHICLE INSPECTION

ST relay

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS STARTING: RELAY: ON-VEHICLE INSPECTION

Starter assembly

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS STARTING: STARTER: INSPECTION

Starter signal circuit

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: Starter Signal Circuit

Smart key system (for start function)*1

2016 - 2020 MY Sienna [12/2015 -        ]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Start Function): HOW TO PROCEED WITH TROUBLESHOOTING

VC output circuit (ECM 5 V output)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: VC Output Circuit

Park/neutral position switch (for 2WD)

2017 - 2020 MY Sienna [08/2016 -        ]; UA80E (AUTOMATIC TRANSMISSION / TRANSAXLE): PARK / NEUTRAL POSITION SWITCH: ON-VEHICLE INSPECTION

Park/neutral position switch (for AWD)

2017 - 2020 MY Sienna [08/2016 -        ]; UA80F (AUTOMATIC TRANSMISSION / TRANSAXLE): PARK / NEUTRAL POSITION SWITCH: ON-VEHICLE INSPECTION

No initial combustion (Does not start)

Immobiliser system*1

2017 - 2020 MY Sienna [08/2016 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/ Smart Key System): HOW TO PROCEED WITH TROUBLESHOOTING

Immobiliser system*2

2017 - 2020 MY Sienna [08/2016 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM(w/o Smart Key System): HOW TO PROCEED WITH TROUBLESHOOTING

ECM power source circuit

2018 - 2020 MY Sienna [11/2017 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: ECM Power Source Circuit

VC output circuit (ECM 5 V output)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: VC Output Circuit

Ignition system

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): IGNITION SYSTEM: ON-VEHICLE INSPECTION

Fuel pump control circuit

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: Fuel Pump Control Circuit

Fuel injector assembly (for port injection)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL INJECTOR(for Port Injection): INSPECTION

Fuel injector assembly (for direct injection)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL INJECTOR (for Direct Injection): INSPECTION

Crankshaft position sensor

2018 - 2020 MY Sienna [11/2017 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: P033511,P033515,P03351F,P03352A,P033531; Crankshaft Position Sensor "A" Circuit Short to Ground

Intake system

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (INTAKE / EXHAUST): INTAKE SYSTEM: ON-VEHICLE INSPECTION

Valve timing

2019 - 2020 MY Sienna [08/2018 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: P001100,P001200,P002100,P002200; Camshaft Position "A" - Timing Over-Advanced or System Performance Bank 1

No. 1 valve rocker arm sub-assembly*3

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE MECHANICAL): ENGINE UNIT: COMPONENTS

Engine cranks normally but difficult to start

ECM power source circuit

2018 - 2020 MY Sienna [11/2017 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: ECM Power Source Circuit

Flow chart [Engine difficult to start]

2019 - 2020 MY Sienna [08/2018 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: Engine Difficult to Start

Throttle body with motor assembly

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): THROTTLE BODY: ON-VEHICLE INSPECTION

Fuel pump assembly (for high pressure side)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL PUMP(for High Pressure): ON-VEHICLE INSPECTION

Fuel pump (for low pressure side)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL PUMP: INSPECTION

Engine coolant temperature sensor

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): ENGINE COOLANT TEMPERATURE SENSOR: INSPECTION

Fuel pump control circuit

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: Fuel Pump Control Circuit

Ignition system

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): IGNITION SYSTEM: ON-VEHICLE INSPECTION

Spark plug

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): IGNITION SYSTEM: ON-VEHICLE INSPECTION+

Compression

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE MECHANICAL): ENGINE: ON-VEHICLE INSPECTION+

Fuel injector assembly (for port injection)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL INJECTOR(for Port Injection): INSPECTION

Fuel injector assembly (for direct injection)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL INJECTOR (for Direct Injection): INSPECTION

Crankshaft position sensor

2018 - 2020 MY Sienna [11/2017 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: P033511,P033515,P03351F,P03352A,P033531; Crankshaft Position Sensor "A" Circuit Short to Ground

Intake system

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (INTAKE / EXHAUST): INTAKE SYSTEM: ON-VEHICLE INSPECTION

Valve timing

2019 - 2020 MY Sienna [08/2018 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: P001100,P001200,P002100,P002200; Camshaft Position "A" - Timing Over-Advanced or System Performance Bank 1

No. 1 valve rocker arm sub-assembly*3

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE MECHANICAL): ENGINE UNIT: COMPONENTS

Incomplete intermittent combustion occurs (Does not start)

Fuel pump control circuit

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: Fuel Pump Control Circuit

Ignition system

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): IGNITION SYSTEM: ON-VEHICLE INSPECTION

Fuel injector assembly (for port injection)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL INJECTOR(for Port Injection): INSPECTION

Fuel injector assembly (for direct injection)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL INJECTOR (for Direct Injection): INSPECTION

Crankshaft position sensor

2018 - 2020 MY Sienna [11/2017 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: P033511,P033515,P03351F,P03352A,P033531; Crankshaft Position Sensor "A" Circuit Short to Ground

Intake system

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (INTAKE / EXHAUST): INTAKE SYSTEM: ON-VEHICLE INSPECTION

Valve timing

2019 - 2020 MY Sienna [08/2018 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: P001100,P001200,P002100,P002200; Camshaft Position "A" - Timing Over-Advanced or System Performance Bank 1

High engine speed

Throttle body with motor assembly

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): THROTTLE BODY: ON-VEHICLE INSPECTION

ECM power source circuit

2018 - 2020 MY Sienna [11/2017 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: ECM Power Source Circuit

PCV hose

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS EMISSION CONTROL: PCV VALVE: COMPONENTS

PCV system

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS EMISSION CONTROL: PCV VALVE: INSPECTION

Low engine speed (Poor idle)

Fuel pump control circuit

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: Fuel Pump Control Circuit

Throttle body with motor assembly

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): THROTTLE BODY: ON-VEHICLE INSPECTION

Fuel injector assembly (for port injection)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL INJECTOR(for Port Injection): INSPECTION

Fuel injector assembly (for direct injection)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL INJECTOR (for Direct Injection): INSPECTION

Fuel pump assembly (for high pressure side)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL PUMP(for High Pressure): ON-VEHICLE INSPECTION

PCV hose

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS EMISSION CONTROL: PCV VALVE: COMPONENTS

PCV system

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS EMISSION CONTROL: PCV VALVE: INSPECTION

Intake system

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (INTAKE / EXHAUST): INTAKE SYSTEM: ON-VEHICLE INSPECTION

Rough idle

Flow chart [Rough idling]

2019 - 2020 MY Sienna [08/2018 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: Rough Idling

Throttle body with motor assembly

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): THROTTLE BODY: ON-VEHICLE INSPECTION

Fuel injector assembly (for port injection)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL INJECTOR(for Port Injection): INSPECTION

Fuel injector assembly (for direct injection)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL INJECTOR (for Direct Injection): INSPECTION

Fuel pump assembly (for high pressure side)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL PUMP(for High Pressure): ON-VEHICLE INSPECTION

Ignition system

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): IGNITION SYSTEM: ON-VEHICLE INSPECTION

Compression

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE MECHANICAL): ENGINE: ON-VEHICLE INSPECTION+

Fuel pump control circuit

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: Fuel Pump Control Circuit

Spark plug

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): IGNITION SYSTEM: ON-VEHICLE INSPECTION+

Intake system

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (INTAKE / EXHAUST): INTAKE SYSTEM: ON-VEHICLE INSPECTION

Valve timing

2019 - 2020 MY Sienna [08/2018 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: P001100,P001200,P002100,P002200; Camshaft Position "A" - Timing Over-Advanced or System Performance Bank 1

No. 1 valve rocker arm sub-assembly*3

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE MECHANICAL): ENGINE UNIT: COMPONENTS

Hunting (Poor idle)

Throttle body with motor assembly

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): THROTTLE BODY: ON-VEHICLE INSPECTION

ECM power source circuit

2018 - 2020 MY Sienna [11/2017 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: ECM Power Source Circuit

Fuel pump control circuit

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: Fuel Pump Control Circuit

Spark plug

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): IGNITION SYSTEM: ON-VEHICLE INSPECTION+

Intake system

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (INTAKE / EXHAUST): INTAKE SYSTEM: ON-VEHICLE INSPECTION

Hesitation/Poor acceleration (Poor driveability)

Fuel injector assembly (for port injection)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL INJECTOR(for Port Injection): INSPECTION

Fuel injector assembly (for direct injection)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL INJECTOR (for Direct Injection): INSPECTION

Fuel pump control circuit

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: Fuel Pump Control Circuit

Fuel pump assembly (for high pressure side)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL PUMP(for High Pressure): ON-VEHICLE INSPECTION

Ignition system

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): IGNITION SYSTEM: ON-VEHICLE INSPECTION

Spark plug

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): IGNITION SYSTEM: ON-VEHICLE INSPECTION+

Intake system

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (INTAKE / EXHAUST): INTAKE SYSTEM: ON-VEHICLE INSPECTION

Valve timing

2019 - 2020 MY Sienna [08/2018 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: P001100,P001200,P002100,P002200; Camshaft Position "A" - Timing Over-Advanced or System Performance Bank 1

No. 1 valve rocker arm sub-assembly*3

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE MECHANICAL): ENGINE UNIT: COMPONENTS

Brake override system

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: Brake Override System

Lack of power

Flow chart [Lack of power]

2019 - 2020 MY Sienna [08/2018 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: Lack of Power

Surging (Poor driveability)

Fuel pump control circuit

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: Fuel Pump Control Circuit

Spark plug

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): IGNITION SYSTEM: ON-VEHICLE INSPECTION+

Fuel injector assembly (for port injection)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL INJECTOR(for Port Injection): INSPECTION

Fuel injector assembly (for direct injection)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL INJECTOR (for Direct Injection): INSPECTION

No. 1 valve rocker arm sub-assembly*3

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE MECHANICAL): ENGINE UNIT: COMPONENTS

Engine stalls soon after starting

Flow chart [Engine stalls]

2019 - 2020 MY Sienna [08/2018 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: Engine Stalls

Fuel pump control circuit

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: Fuel Pump Control Circuit

Throttle body with motor assembly

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): THROTTLE BODY: INSPECTION

Crankshaft position sensor

2018 - 2020 MY Sienna [11/2017 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: P033511,P033515,P03351F,P03352A,P033531; Crankshaft Position Sensor "A" Circuit Short to Ground

Ignition system

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): IGNITION SYSTEM: ON-VEHICLE INSPECTION

Fuel pump assembly (for high pressure side)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL PUMP(for High Pressure): INSPECTION

Intake system

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (INTAKE / EXHAUST): INTAKE SYSTEM: ON-VEHICLE INSPECTION

Valve timing

2019 - 2020 MY Sienna [08/2018 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: P001100,P001200,P002100,P002200; Camshaft Position "A" - Timing Over-Advanced or System Performance Bank 1

Engine stalls soon after slow down

Flow chart [Engine stalls]

2019 - 2020 MY Sienna [08/2018 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: Engine Stalls

Fuel injector assembly (for port injection)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL INJECTOR(for Port Injection): INSPECTION

Fuel injector assembly (for direct injection)

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (FUEL): FUEL INJECTOR (for Direct Injection): INSPECTION

Throttle body with motor assembly

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): THROTTLE BODY: ON-VEHICLE INSPECTION

ECM

2018 - 2020 MY Sienna [11/2017 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: TERMINALS OF ECM

Crankshaft position sensor

2018 - 2020 MY Sienna [11/2017 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: P033511,P033515,P03351F,P03352A,P033531; Crankshaft Position Sensor "A" Circuit Short to Ground

Ignition system

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): IGNITION SYSTEM: ON-VEHICLE INSPECTION

Engine vibrates frequently when idling (Active control engine mount system)

Active control engine mount system

2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE CONTROL): SFI SYSTEM: Active Control Engine Mount System

Unable/difficult to refuel

Fuel system (canister, refueling valve, roll over valve, fuel tank, etc.)

-

  • *1: w/ Smart Key System
  • *2: w/o Smart Key System

HINT:

*3: Check "Fuel Cut Elapsed Time" in the Data List. If the elapsed time is over 0 sec, then the engine speed is high (the engine speed at which fuel cut occurs + 500 rpm or more). In this situation, there is a possibility that a No. 1 valve rocker arm sub-assembly will become loose and malfunction, check that the No. 1 valve rocker arm sub-assemblies are properly installed.

Click here 2017 - 2020 MY Sienna [08/2016 -        ]; 2GR-FKS (ENGINE MECHANICAL): ENGINE UNIT: COMPONENTS