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IG-1
IGNITION (1GR-FE) - IGNITION SYSTEM

IGNITION SYSTEM
IG0MI-01

ON-VEHICLE INSPECTION
NOTICE:
"Cold" and "Hot" in this section mean the temperature of the coils themselves. "Cold" is from -10_C
(14_F) to 50_C (122_F) and "Hot" is from 50_C (122_F) to 100_C (212_F).
1. INSPECT IGNITION COIL AND SPARK TEST
(a) Confirm DTCs.
NOTICE:
If a DTC is present, perform troubleshooting in accordance with the procedure for that DTC.
(b) Check that spark occurs.
(1) Remove the ignition coils.
(2) Using a 16 mm (0.63 in) plug wrench, remove the spark plugs.
(3) Install the spark plugs to each ignition coil, and connect the ignition coil connectors.
(4) Disconnect the 6 injector connectors.
(5) Ground the spark plugs.
(6) Check if spark occurs while the engine is being cranked.
NOTICE:
S Be sure to ground the spark plugs when checking.
S Replace the ignition coil when subjected to an impact.
S Do not crank the engine for more than 2 seconds.
If spark does not occur, do the test as follows:
SPARK TEST
NG
CHECK CONNECTION OF IGNITION COIL NG
Connect securely.
CONNECTOR
OK
CHANGE IT TO A NORMAL IGNITION COIL AND OK
Replace the ignition coil.
PERFORM SPARK TEST AGAIN
NG
CHECK POWER SUPPLY TO IGNITION COIL
1. Turn the ignition switch to the ON position. NG Check wiring between the ignition switch
2. Check that there is battery positive voltage at the ignition coil posi- and ignition coil.
tive (+) terminal.

OK NG
CHECK VVT SENSOR Check wiring between the VVT sensor
(See page DI-209) and ECM.
OK NG
Repair wiring between the VVT sensor
and ECM.
OK
Replace the VVT sensor.

CHECK RESISTANCE OF CRANKSHAFT POSITION
SENSOR (See page DI-203) NG Replace the crankshaft position sensor.
Cold Hot
Resistance: 1,630 to 2,740 2,065 to 3,225
OK
CHECK IGT SIGNAL FROM ECM NG
(See page DI-216) Check the ECM (See page DI-1).
OK
REPAIR WIRING BETWEEN IGNITION COIL AND ECM
IG-2
IGNITION (1GR-FE) - IGNITION SYSTEM

(c) Using a 16 mm (0.63 in.) plug wrench, install the spark
plugs.
Torque: 18 Nm (184 kgfcm, 13 ftlbf)
(d) Install the ignition coils.
Torque: 10 Nm (102 kgfcm, 7 ftlbf)

2. INSPECT SPARK PLUGS
(a) Clean the spark plugs.
Air pressure: Below 588 kPa (6 kg/cm2, 85 psi)
Duration: 20 seconds or less

IG0152

(b) Check the spark plug for any damage to its thread and in-
sulator.
If there is damage, replace the spark plug.
Recommended spark plug:
NGK made LFR6C-11
DENSO made K20HR-U11

P03783

P03792
IG-3
IGNITION (1GR-FE) - IGNITION SYSTEM

3. CHECK VVT SENSOR OUTPUT VOLTAGE
(a) Turn the ignition switch to the ON position.
(b) Check that the voltage between terminal VC1 of the ECM
and ground is 5 V.
HINT:
For the terminal arrangement of the ECM, see page DI-34.
(c) While turning the crankshaft pulley by hand, measure the
voltage between each terminal. Check that the voltage
changes between the Hi range and Lo range as shown in
the table below.
HINT:
For the terminal arrangement of the ECM, see page DI-34.
Sensor position Terminal No. Voltage (Hi) Voltage (Lo)
Bank 1 VV1+ VV1- 3.75 to 4.5 V 0.5 to 1.25 V
Bank 2 VV2+ VV2- 3.75 to 4.5 V 0.5 to 1.25 V
4. INSPECT CRANKSHAFT POSITION SENSOR
(a) Using an ohmmeter, measure the resistance between the
terminals.
RESISTANCE:
1630 to 2740 at cold
2065 to 3225 at hot
NOTICE:
"Cold" and "Hot" mean the temperature of the coils them-
selves. "Cold" is from -10_C (14_F) to 50_C (122_F) and
"Hot" is from 50

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