4407213

Terminal and Connector Inspection

Electrical systems consist of a lot of harness and connectors, poor connection of terminals can cause various problems and damge 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 seperation, damage of locking device and connecting condition between terminal and wiring.

caution

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?

YES

Repair the trouble causing part and go to "Verification of Vehicle Repair".

Go to "Go to "Power Circuit Inspection".

Power Supply Circuit Inspection

Check power circuit voltage

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect EGR actuator connector

(3)

IG KEY "ON".

(4)

Measure the voltage of terminal 2 of EGR actuator connector

Secification : 11.5V~13.0V

(5)

Is the measured voltage within the specification?

YES

Go to "Control Circuit Inspection".

Repair E/R FUSE & RELAY BOX 15A INJ FUSE and related circuit and go to "Verification of Vehicle Repair".

Control Circuit Inspection

Check control circuit monitoring voltage

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect EGR actuator connector.

(3)

IG KEY "ON".

(4)

Measure the voltage of terminal 1 of EGR actuator connector.

Specification : 3.2V~3.7V

(5)

Is the measured voltage within the specification?

YES

Go to "Component Inspection".

Go to "2. Check short to ground in control circuit" as follows".

Check short to ground in control circuit

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect EGR actuator connector and ECM connector

(3)

Check continuity between EGR actuator terminal 1 and chassis ground.

Specification : Discontinuity ( Infinite Ω )

(4)

Is the measured resistance within the specification?

YES

Go go "Component Inspection".

Repair open in control circuit and go to "Verification of Vehicle Repair".