Component Tests and General Diagnostics

CRANKSHAFT POSITION SENSOR (NE SIGNAL) INSPECTION

NOTICE: "Cold" and "Hot" in the following 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. Disconnect distributor connector.
2. remove distributor cap without disconnecting high-tension cords.
3. Remove rotor.

4. Inspect air gaps.




Using a thickness gauge, measure the gap between the signal rotor and the pickup coil projection.

Air gap: 0.2 - 0.4 mm (0.008 - 0.016 in.)

If the gap is not as specified, replace the distributor housing.
5. Inspect signal generator (pickup coil) resistance.



Using an ohmmeter, check that the resistance of the pickup coil.

Pickup coil resistance:
Cold:
NE and G(-): 185 - 275 ohm
Hot:
NE and G(-): 240 - 325 ohm

If the resistance is not as specified, replace the distributor housing.
6. Reinstall rotor.
7. Reinstall distributor cap.
8. Reconnect distributor connector.


CRANKSHAFT POSITION SENSOR (NE2 SIGNAL) INSPECTION

1. DIsconnect crankshaft position sensor connector and bracket.
2. Inspect crankshaft position sensor resistance.




Using an ohmmeter, measure the resistance between the terminals.

Resistance (NE(+) - NE(-)):
Cold: 1,630 - 2,740 ohm
Hot: 2,065 - 3,225 ohm

If the resistance is not as specified, replace the crankshaft position sensor.
3. Reconnect crankshaft position sensor bracket and connector.