Terminal and Connector Inspection
1.

Electrical systems consist of a lot of harness and connectors, poor connection of terminals can cause various problems and damge 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 male 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?

YES

a.

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

NO

a.

Go to "Power Circuit Inspection".

Power Supply Circuit Inspection
1.

Check Fuel pump motor power(Input) voltage

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect fuel pump relay.

(3)

Measure the voltage of fuel pump relay connector terminal 30.

1)

Specification : 11.5V~13.0V

(4)

Is the measured voltage within the specification?

YES

a.

Go to "2. Check Relay coil power circuit voltage" as follows.

NO

a.

Repair open in E/R JUNCTION BOX 15A F/PUMP fuse and related circuit and go to "Verification of Vehicle Repair".

2.

Check Relay coil power circuit voltage

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect fuel pump relay.

(3)

IG KEY "ON"

(4)

Measure the voltage of fuel pump relay connector terminal 85.

1)

Specification : 11.5V~13.0V

(5)

Is the measured voltage within the specification?

YES

a.

Go to "Control Circuit Inspection".

NO

a.

Repair E/R JUNCTION BOX 15A INJ fuse and related circuit and go to "Verification of Vehicle Repair".

Control Circuit Inspection
1.

Check short to ground in control circuit

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect fuel pump relay.

(3)

IG KEY "ON"

(4)

Measure the voltage of fuel pump relay connector terminal 86.

1)

Specification : 3.2V~3.7V

(5)

Is the measured voltage within the specification?

YES

a.

Go to "Component Inspection".

NO

a.

When no value is detected : Go to "2. Check open in control circuit".

b.

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

2.

Check open in control circuit

(1)

IG KEY "OFF", ENGINE "OFF"

(2)

Disconnect fuel pump relay and ECM connector.

(3)

Check continuity between fuel pump relay connector terminal 86 and ECM connector(CDD-A) terminal 45.

1)

Specification : Continuity ( below 1.0Ω )

(4)

Is the measured resistance within the specification?

YES

a.

Repair short to ground and go to "Verification of Vehicle Repair".

NO

a.

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

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