Ignition system

ON-VEHICLE INSPECTION

NOTICE: "Cold" and "Hot" in these sentences express the temperature of the coils themselves. "Cold" is from -10C (14F) to 50C (122F) and "Hot" is from 50C (122F) to 100C (212F).

1. INSPECT IGNITION COIL (WITH IGNITER) AND SPARK TEST

Check that the spark occurs.

1. 1
   Remove the ignition coils (with igniter) ( IG-6 ).
2. 2
   Remove the spark plugs.
3. 3
   Install the spark plugs to each ignition coil (with igniter), and connect the ignition coil (with igniter) connector.
4. 4
   Disconnect the 8 injector connectors.
5. 5
   Ground the spark plug.
6. 6
   Check if spark occurs while engine is being cranked.

NOTICE: To prevent gasoline from being injected from injectors during this test, crank the engine for no more than 5 - 10 seconds at time.

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

7. Using a 16 mm plug wrench, install the spark plugs.

Torque: 17,5 N·m

7. Reinstall the ignition coils (with igniter) ( IG-6 ).

2. INSPECT SPARK PLUG

NOTICE:

• Never use a wire brush for cleaning.
• Never attempt to adjust the electrode gap on used spark plug.
• Spark plug should be replaced every 100,000 km (60,000 miles).

(a) Remove the ignition coils (with igniter) ( IG-6 ).

(b) Check the electrode.

• Using a megger (insulation resistance meter), measure the insulation resistance.

Correct insulation resistance: 10 MW or more

If the resistance is less than specified, proceed to step (d).

HINT: If a megger is not available, the following simple method of inspection provides fairly accurate results.

• Simple Method:

• Quickly race the engine to 4,000 rpm 5 times.
• Remove the spark plug. (See step (c))
• Visually check the spark plug. If the electrode is dry ... OK.

  If the electrode is wet ... Proceed to step (d).

• Reinstall the spark plug. (See step (g))

(c) Using a 16 mm plug wrench, remove the spark plugs.

(d) Check the spark plug for thread damage and insulator damage.

If abnormal, replace the spark plug.

Recommended spark plug:

(e) Check the spark plug electrode gap.

Maximum electrode gap for used spark plug: 1.3 mm (0.051 in.)

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

Correct electrode gap for new spark plug: 1.1 mm (0.043 in.)

NOTICE: If adjusting the gap of a new spark plug, bend only the base of the ground electrode. Do not touch the tip. Never attempt to adjust the gap on a used plug.

(f) Clean the spark plugs.

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

Air pressure: Below 588 kPa (6 kgf/cm2, 85 psi)

Duration: 20 seconds or less

HINT: If there are traces of oil, remove it with gasoline before using the spark plug cleaner.

(g) Using a 16 mm plug wrench, install the spark plugs.

Torque: 17,5 N·m

(h) Reinstall the ignition coils (with igniter) ( IG-6 ).

3. INSPECT CAMSHAFT POSITION SENSOR

(a) Remove the V-bank cover.

(b) Disconnect the camshaft position sensor connector.

(c) Using an ohmmeter, measure the resistance between terminals.

Resistance:

If the resistance is not as specified, replace the camshaft position sensor.

(d) Reconnect the camshaft position sensor connector.

(e) Reinstall the V-bank cover.

4. INSPECT CRANKSHAFT POSITION SENSOR

(a) Remove the crankshaft position sensor ( IG-12 ).

(b) Using an ohmmeter, measure the resistance between the terminals.

Resistance:

If the resistance is not as specified, replace the crankshaft position sensor.

(c) Reinstall the crankshaft position sensor.