6727037

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 "Power Circuit Inspection".

Check voltage between power ('SNSR 1 FUSE 15A') terminal of 'EGR ACTUATOR' harness connector and chassis ground.

Specification : 10.5V ~ 14.5V

Is the measured value within specification?

▶ Go to "Control Circuit Inspection".

▶ If no voltage is detected, repair open/ short to ground between power ('SNSR 1 FUSE 15A') terminal of 'EGR ACTUATOR' harness connector and power ('SNSR 1 FUSE 15A') 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 power ('SNSR 1 FUSE 15A') terminal of 'EGR ACTUATOR' harness connector and power ('SNSR 1 FUSE 15A') terminal of ECM harness connector, and go to "Verification of Vehicle Repair" procedure.

Check voltage between 'EGR actuator' terminal of 'EGR ACTUATOR' harness connector and chassis ground.

Specification : 3.2V ~ 3.7V

Is the measured value within specification?

	▶ Go to "Component Inspection" procedure.
	▶ If the voltage is high than specification value, repair short to battery between 'EGR actuator' terminal of 'EGR ACTUATOR' harness connector and 'EGR actuator' terminal of ECM harness connector, and go to "Verification of Vehicle Repair" procedure.

Check resistance between 'EGR actuator' terminal of 'EGR ACTUATOR' harness connector and 'EGR actuator' terminal of ECM harness connector.

Specification : Continuity (Below 1.0Ω)

Is the measured value within specification?

	▶ Repair short to ground between 'EGR actuator' terminal of 'EGR ACTUATOR' harness connector and 'EGR actuator' terminal of ECM harness connector, and go to "Verification of Vehicle Repair" procedure.
	▶ Repair open between 'EGR actuator' terminal of 'EGR ACTUATOR' harness connector and 'EGR actuator' terminal of ECM harness connector, and go to "Verification of Vehicle Repair" procedure.