Inspection

1. 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 192,000 km (120,000 miles).

(a) Clean the spark plugs.

Air pressure: Below 588 kPa (6.0 kg/cm2, 85 psi) Duration: 20 seconds or less

B01301

(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)

B01301

Sk16r11 Denso

(c) Check the spark plug electrode gap. Electrode gap: 1.1 mm (0.043 in.)

2. CRANK POSITION SENSOR NO.1

(a) Using an ohmmeter, measure the resistance between terminals. RESISTANCE: At cold 835 - 1,400 Q At hot 1,060 - 1,645 Q NOTICE:

"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.

2004 COROLLA (RM1037U)

3. CRANK POSITION SENSOR

(a) Using an ohmmeter, measure the resistance between terminals. RESISTANCE: At cold 1,630 - 2,740 Q At hot 2,065 - 3,225 Q NOTICE:

"Cold" and "Hot" on the table express the temperature of the coils themselves. "Cold" is from -10oC

(14°F) to 50oC (122oF) and "Hot" is from 50oC (122oF) to 100oC (212oF).

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.

2003 Toyota Corolla Vacuum Diagram

STARTING SYSTEM (1ZZ-FE) (April, 2003)

190QO-02

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