2GR-FE (ENGINE CONTROL): IGNITION SYSTEM: ON-VEHICLE INSPECTION; 2016 MY Sienna [12/2015

Last Modified: 04-05-2023	6.11:8.1.0	Doc ID: RM100000000VI85
Model Year Start: 2016	Model: Sienna	Prod Date Range: [12/2015 - 08/2016]
Title: 2GR-FE (ENGINE CONTROL): IGNITION SYSTEM: ON-VEHICLE INSPECTION; 2016 MY Sienna [12/2015 - 08/2016]

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT IGNITION COIL ASSEMBLY AND PERFORM SPARK TEST

(a) Check for DTCs (See page ).

NOTICE:

If any DTC is present, perform troubleshooting in accordance with the procedure for that DTC.

(b) Check that spark occurs.

(1) Remove the 6 ignition coils and 6 spark plugs (See page ).

(2) Disconnect the 6 fuel injector connectors.

(3) Install the spark plug into the ignition coil, and then connect the ignition coil connector.

(4) Ground the spark plug.

(5) Check that spark occurs at each spark plug while the engine is being cranked.

NOTICE:

Be sure to ground the spark plugs when checking them.
If an ignition coil has been struck or dropped, replace it.
Do not crank the engine for more than 2 seconds.

If spark does not occur, perform the following procedure.

(1) Check that the wire harness side connector of the ignition coil with igniter is securely connected.

Result

Result	Proceed to
NG	Connect securely
OK	Go to next step

(2) Perform a spark test on each ignition coil.

Replace the ignition coil with a known good one.
Perform the spark test again.

Result

Result	Proceed to
NG	Go to next step
OK	Replace ignition coil

(3) Perform a spark test on each spark plug.

Replace the spark plug with a known good one.
Perform the spark test again.

Result

Result	Proceed to
NG	Go to next step
OK	Replace spark plug

(4) Check that power is supplied to the ignition coil.

Text in Illustration

*a	Front view of wire harness connector (to Ignition Coil Assembly)

Disconnect the ignition coil connector.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
1 (+B) - 4 (GND)	Ignition switch ON	11 to 14 V

Result

Result	Proceed to
NG	Check wiring between ignition switch and ignition coil and check ground circuit
OK	Replace the ECM (See page )

(d) Connect the 6 fuel injector connectors.

(e) Install the 6 spark plugs and 6 ignition coils (See page ).

(f) Clear the DTCs (See page ).

(g) Check for DTCs (See page ).

HINT:

Reinstall the sensors, connectors, etc. and restore the previous vehicle conditions before rechecking for DTCs.

2. INSPECT SPARK PLUG

NOTICE:

Do not use a wire brush for cleaning.
Do not attempt to adjust the electrode gap of a used spark plug.

(a) Check the electrode using a megohmmeter.

Text in Illustration

Ground

(1) Using a megohmmeter, measure the insulation resistance.

Standard Resistance:

10 MΩ or more

If the result is below 10 MΩ, clean the plug and measure the resistance again.

(b) Check the electrode without using a megohmmeter.

(1) Quickly accelerate the engine to 4000 rpm 5 times.

(2) Remove the spark plug.

(3) Visually check the spark plug.

If the electrode is dry, the spark plug is functioning properly. If the electrode is damp, proceed to the next step.

If there is any damage, replace the spark plug.

Recommended Spark Plug:

Manufacturer	Spark Plug Type
DENSO	FK20HR11

(d) Reference:

(1) Check the spark plug electrode gap.

Text in Illustration

*a	Electrode Gap

Maximum Electrode Gap for Used Spark Plug:

1.4 mm (0.0551 in.)

If the gap is greater than the maximum, replace the spark plug.

Electrode Gap for New Spark Plug:

1.0 to 1.1 mm (0.0394 to 0.0433 in.)

(e) Clean the spark plug.

If the electrode has traces of wet carbon, clean the electrode with a spark plug cleaner and then dry it.

Standard Air Pressure:

588 kPa (6.0 kgf/cm², 85 psi)

Standard Duration:

20 seconds or less

HINT:

Only use the spark plug cleaner when the electrode is free of oil. If the electrode has traces of oil, use gasoline to clean off the oil before using the spark plug cleaner.