Toyota Tundra. Manual — part 2164

a. Check for DTCs.

b. Check if sparks occur.

1. Remove the ignition coils and spark plugs, (seeREMOVAL ).

2. Install the spark plug to the ignition coil and connect the ignition coil connector.

3. Disconnect the 8 injector connectors.

4. Ground the spark plugs.

Fig. 5: Testing Spark Plug
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

5. Visually check that sparks occur while the engine is being cranked.

c. Spark test flowchart.

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

connected.

Result

SPARK PLUG RESULT CHART

2. Perform a spark test on each ignition coil with igniter.

1. If there is a cylinder where sparks do not occur, replace its ignition coil with the

NOTE:

If any DTC is present, perform troubleshooting procedures for that
DTC.

NOTE:



Be sure to ground the spark plug when checking.



If the ignition coil has been struck or dropped, replace it.



Do not crank the engine for more than 2 seconds.

Result

Proceed to

NG Connect securely
OK

Go to next step

2009 Toyota Tundra

2009 ENGINE Ignition (2UZ-FE) - Tundra

ignition coil of a cylinder where sparks occur normally.

2. Crank the engine and visually check that sparks occur at the cylinder with the normally

operating ignition coil.

Result

SPARK PLUG RESULT CHART

3. Check power supply to the ignition coil with igniter.

1. Turn the Ignition Switch ON.

2. Check that there is battery voltage at the ignition coil positive (+) terminal.

Result

SPARK PLUG RESULT CHART

4. Check the VVT sensor (see REMOVAL ).

5. Check the crankshaft position sensor (See REMOVAL ).

6. Check the IGT signal circuit (see DTC P0351 IGNITION COIL "A"

PRIMARY/SECONDARY CIRCUIT; DTC P0352 IGNITION COIL "B"
PRIMARY/SECONDARY CIRCUIT; DTC P0353 IGNITION COIL "C"
PRIMARY/SECONDARY CIRCUIT; DTC P0354 IGNITION COIL "D"
PRIMARY/SECONDARY CIRCUIT; DTC P0355 IGNITION COIL "E" PRIMARY ).

d. Connect the 8 injector connectors.

e. Install the 8 ignition coils and 8 spark plugs, (see INSTALLATION ).

2. INSPECT SPARK PLUG

a. Check the electrode.

1. Using a megohmmeter, measure the insulation resistance.

Standard insulation resistance

SPARK PLUG TESTER CONNECTION SPECIFIED CONDITION CHART

Result

Proceed to

OK Replace ignition coil with igniter
NG

Go to next step

Result

Proceed to

NG Check wiring between ignition switch and ignition coil with igniter
OK

Go to next step

NOTE:

Do not use a wire brush for cleaning.

Tester Connection

Condition Specified Condition

Spark Plug (terminal part) - Body Ground Always

10 Mohms or higher

2009 Toyota Tundra

2009 ENGINE Ignition (2UZ-FE) - Tundra

Fig. 6: Measuring Spark Plug Insulation Resistance
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

If the insulation resistance is below the specified range, replace the spark plug.

HINT:

If a megohmmeter is not available, perform the following simple inspection instead.

b. Alternative inspection method:

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.

Fig. 7: Identifying Spark Plug Condition
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

c. Check the spark plug for any damage on its threads and insulator. If there is any damage, replace

the spark plug.

Recommended spark plug

SPARK PLUG SPECIFICATION

Manufacturer Spark Plug Type

DENSO made

SK20R11

NGK made

IFR6A11

2009 Toyota Tundra

2009 ENGINE Ignition (2UZ-FE) - Tundra

Fig. 8: Identifying Spark Plug Electrode Gap
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

HINT:

Maximum electrode gap for a used spark plug: 1.3 mm (0.0511 in.)

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

Electrode gap for a new spark plug: 1.0 to 1.1 mm (0.0394 to 0.0433 in.)

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

Standard air pressure: 588 kPa (6.0 kgf/cm

2

, 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.

Fig. 9: Cleaning Electrode With Spark Plug Cleaner
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

IGNITION COIL SPARK PLUG

NOTE:

Do not adjust the electrode gap of any spark plug, as the ground
electrode tip will be damaged.

2009 Toyota Tundra

2009 ENGINE Ignition (2UZ-FE) - Tundra