6522424

1.

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

2.

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.

note

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

3.

Is the problem found?

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

1.

IG KEY "OFF", ENGINE "OFF".

2.

Disconnect Electric EGR control valve connector.

3.

IG KEY "ON"

4.

Measure the voltage between power terminal of EGR actuator harness connector and chassis ground.

Specification : 11.5V~13.0V

5.

Is the measured voltage within the specification?

	▶ Go to "Control Circuit Inspection".
	▶ Repair INJ FUSE in E/R FUSE & RELAY BOX and related circuit and go to "Verification of Vehicle Repair".

1.

IG KEY "OFF", ENGINE "OFF".

2.

Disconnect Electric EGR control valve connector.

3.

IG KEY "ON".

4.

Measure the voltage between control terminal of EGR actuator harness connector and chassis ground.

Specification : 3.2V~3.7V

5.

Is the measured voltage within the specification?

▶ Go to "Position sensor Inspection" procedure.

▶ When voltage is not detected : Go to "2. Check open in control circuit" as follows.

▶ When high voltage is detected : Repair short to battery and go to "Verification of Vehicle Repair".

1.

IG KEY "OFF", ENGINE "OFF".

2.

Disconnect Electric EGR control valve connector.

3.

IG KEY "ON".

4.

Measure the voltage between power terminal of EGR actuator position sensor harness connector and chassis ground.

Specification : 4.8 ~ 5.1V

5.

Is the measured voltage within the specification?

	▶ Go to "Signal circuit Inspection" procedure.
	▶ Repair open in circuit and go to "Verification of Vehicle Repair".

6.

IG KEY "OFF", ENGINE "OFF".

7.

Connect Electric EGR control valve connector.

8.

IG KEY "ON".

9.

Measure the voltage between power terminal of EGR actuator position sensor harness connector and chassis ground.

Specification : 3.9 V at idle

10.

Is the measured voltage within the specification?

	▶ Go to "Ground circuit Inspection" procedure.
	▶ Repair open in circuit and go to "Verification of Vehicle Repair".

11.

IG KEY "OFF", ENGINE "OFF".

12.

Disconnect Electric EGR control valve connector.

13.

Measure the voltage between ground terminal of EGR actuator position sensor harness connector and chassis ground.

Specification : below 0.2 V

14.

Is the measured voltage within the specification?

	▶ Go to "Component Inspection" procedure.
	▶ Repair open in circuit and go to "Verification of Vehicle Repair".