Ignition System: Testing and Inspection

NOTE: "Cold" and "Hot" in these sentences express 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 (WITH IGNITER) AND SPARK TEST
a. Confirm DTC.

NOTE: If DTC is indicated, carry out troubleshooting in accordance with the procedure on the following DTC.

b. Check that the spark occurs.
1. Remove the ignition coils (with igniter).
2. Using a 16 mm (0.63 in) plug wrench, remove the spark plugs.
3. Install the spark plugs to each ignition coils (with igniter), and connect the ignition coil connectors.
4. Disconnect the 4 injector connectors.
5. Ground the spark plugs.
6. Check if spark occurs while engine is being cranked.

NOTE: Be sure to ground the spark plug, when checking.
Replace the ignition coil when it is given an impact.
Do not crank the engine for more than 2 seconds.


HINT: If the spark does not occur, do the test as follows:







c. Using a 16 mm (0.63 in.) plug wrench, install the spark plugs.

Torque: 25 N.m (255 kgf.cm, 18 ft.lbf)

d. Install the ignition coil with igniter.

Torque: 9.0 N.m (92 kgf.cm, 80 in.lbf)


2. SPARK PLUG

NOTE: Never use a wire brush for cleaning.
Never attempt to adjust the electrode gap on used spark plug.
Spark plug should be replaced every 192,000 km (120,000 miles).







a. Clean the spark plugs.

Air pressure: Below 588 kPa (6.0 kg/sq.cm, 85 psi)

Duration: 20 seconds or less







b. Check the spark plug for thread damage and insulator damage.

HINT: If abnormal, replace the spark plug.

Recommended spark plug:
SK16R11 (DENSO made)
IFR5A11 (NGK made)







c. Check the spark plug electrode gap.

Electrode gap: 1.1 mm (0.043 in.)

3. CRANK POSITION SENSOR N0.1
a. Using an ohmmeter, measure the resistance between terminals.

RESISTANCE:
At cold 835 - 1,400 Ohm
At hot 1,060 - 1,645 Ohm

NOTE: "Cold" and "Hot" on the table express 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).

HINT: If the resistance is not as specified, replace the crank position sensor No. 1.

4. CRANK POSITION SENSOR
a. Using an ohmmeter, measure the resistance between terminals.

RESISTANCE:
At cold 1,630 - 2,740 Ohm
At hot 2,065 - 3,225 Ohm

NOTE: "Cold" and "Hot" on the table express 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).

HINT: If the resistance is not as specified, replace the crank position sensor.







4. IGNITION RELAY
a. Continuity inspection.
1. Using an ohmmeter, check that continuity exists between each terminal.

Specified condition:
Between terminal 1 and 2 Continuity
Between terminal 3 and 5 No continuity

2. Using an ohmmeter, check that continuity exists between terminals 3 and 5 when the battery voltage is applied across terminals 1 and 2.