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Electrical systems consist of a lot of harness and connectors, poor connection of terminals can cause various problems and damage of component.

Perform checking procedure as follows.

(1)

Check damage of harness and terminals : Check terminals for contact resistance, corrosion and deformation.

(2)

Check connecting condition of ECM and component connector : Check terminal separation, damage of locking device and connecting condition between terminal and wiring.

note

Disconnect the pin which requires checking at male connector and insert it to the terminal at female connector for checking connecting condition. (After checking, reconnect the pin at correct position.)

Is the problem found?

	▶ Repair the trouble causing part and go to "Verification of Vehicle Repair" procedure.
	▶ Go to "Signal Circuit Inspection".

Check voltage between 'Sensor signal' terminal of 'CRANKSHAFT POSITION SENSOR' harness connector and chassis ground.

Check voltage between remainder 'Sensor signal' terminal of 'CRANKSHAFT POSITION SENSOR' harness connector and chassis ground.

Specification : 2.4V ~ 2.6V

Is the measured value within specification?

▶ Go to "Check short between signal circuits" as follows.

▶ If no voltage is detected, repair open / short to ground between abnormal 'Sensor signal' terminal of 'CRANKSHAFT POSITION SENSOR' harness connector and 'Sensor signal' terminal of ECM harness connector, and go to "Verification of Vehicle Repair" procedure.

▶ If the voltage is high than specification value, repair short to battery between abnormal 'Sensor signal' terminal of 'CRANKSHAFT POSITION SENSOR' harness connector and 'Sensor signal' terminal of ECM harness connector, and go to "Verification of Vehicle Repair" procedure.

Check resistance between 'Sensor signal' terminal of 'CRANKSHAFT POSITION SENSOR' harness connector and remainder 'Sensor signal' terminal of 'CRANKSHAFT POSITION SENSOR' harness connector.

Specification : Infinite (∞ Ω)

10.

Is the measured value within specification?

	▶ Go to "Check short between signal circuit and shield ground circuit" as follows.
	▶ Repair short between 'Sensor signal' terminal of 'CRANKSHAFT POSITION SENSOR' harness connector and remainder 'Sensor signal' terminal of 'CRANKSHAFT POSITION SENSOR' harness connector, and go to "Verification of Vehicle Repair" procedure.

13.

Check resistance between 'Sensor signal' terminal of 'CRANKSHAFT POSITION SENSOR' harness connector and 'Shield ground' terminal of 'CRANKSHAFT POSITION SENSOR' harness connector.

14.

Check resistance between remainder 'Sensor signal' terminal of 'CRANKSHAFT POSITION SENSOR' harness connector and 'Shield ground' terminal of 'CRANKSHAFT POSITION SENSOR' harness connector.

Specification : Infinite (∞ Ω)

15.

Is the measured value within specification?

	▶ Go to "Ground Circuit Inspection".
	▶ Repair short between abnormal 'Sensor signal' terminal of 'CRANKSHAFT POSITION SENSOR' harness connector and 'Shield ground' terminal of ECM harness connector, and go to "Verification of Vehicle Repair" procedure.

Check resistance between 'Shield ground' terminal of 'CRANKSHAFT POSITION SENSOR' harness connector and chassis ground.

Specification : Continuity (Below 1.0Ω)

Is the measured value within specification?

	▶ Go to "Component Inspection" procedure.
	▶ Repair open OR eliminate the causes of excessive resistance between 'Shield ground' terminal of 'CRANKSHAFT POSITION SENSOR' harness connector and 'Shield ground' terminal of ECM harness connector, and go to "Verification of Vehicle Repair".