8486857

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.

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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.)

Has a problem been found?

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

Check voltage between 'Supply' terminal of 'BOOST PRESSURE SENSOR' connector and chassis ground.

Specification : 4.8V ~ 5.1V

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Is the measured value within specification?

	▶ Go to "Signal Circuit Inspection".
	▶ Repair open between 'Supply' terminal of 'BOOST PRESSURE SENSOR' harness connector and 'Supply' terminal of ECM harness connector, and go to "Verification of Vehicle Repair" procedure.

Check voltage between 'Signal' terminal of 'BOOST PRESSURE SENSOR' connector and chassis ground.

Specification : 4.8V ~ 5.1V

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Is the measured value within specification?

	▶ Go to "Ground Circuit Inspection".
	▶ Repair short to battery between 'Signal' terminal of 'BOOST PRESSURE SENSOR' harness connector and 'Signal' terminal of ECM harness connector, and go to "Verification of Vehicle Repair" procedure.

Check voltage between 'Supply' terminal of 'BOOST PRESSURE SENSOR' harness connector and chassis ground.(Measurement 1)

Check voltage between 'Supply' terminal and 'Ground' terminal of 'BOOST PRESSURE SENSOR' harness connector.(Measurement 2)

Specification : [Measurement 1] Voltage - [Measurement 2] Voltage = below 200mV

note

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Is the measured value within specification?

▶ Go to "Component Inspection" procedure.

▶ If "[Measurement 2] voltage" is not detected, repair open between 'Ground' terminal of 'BOOST PRESSURE SENSOR' harness connector and 'Ground' terminal of ECM harness connector, and go to "Verification of Vehicle Repair".

▶ If the measured value is above 200mV, eliminate the causes of excessive resistance between 'Ground' terminal of 'BOOST PRESSURE SENSOR' harness connector and 'Ground' terminal of ECM harness connector, and go to "Verification of Vehicle Repair".