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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".

1.

Check power circuit voltage

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnector APS connector.

(3)

IG KEY "ON".

(4)

Measure the voltage between APS connector terminal 5 and chassis ground.

1)

Secification : 4.8V~5.1V

(5)

Is the measured voltage within the specification?

YES

a.

Go to "Component Inspection".

NO

a.

Go to "2. Check short to battery in power circuit" as follows.

2.

Check short to battery in power circuit

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnector APS connector and EUM connector.

(3)

IG KEY "ON".

(4)

Measure the voltage between APS connector terminal 5 and chassis ground

1)

Specification : 0.0V~0.1V

(5)

Is abnormal voltate measured in this test?

YES

a.

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

NO

a.

If the circuit is insulated well and the sensor power supply from ECM is high, replace ECM and go to "Verification of Vehicle Repair".