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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 ground in power circuit" as follows.

2.

Check short to ground in power circuit

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect APS connector, ECM connectors.

(3)

Check continuity between APS connector terminal 5 and chassis ground.

1)

Secification : Discontinuity ( Infinite Ω )

(4)

Is the measured resistance within the specification?

YES

a.

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

NO

a.

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