2195723

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 "Power Circuit Inspection".

Power Supply Circuit Inspection

Check short to ground in power circuit

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect injector #4 connector.

(3)

IG KEY "ON"

(4)

Check the voltage of injector #4 connector terminal 2.

Secification : 2.0V~2.5V

(5)

Is the measured voltage within the specification?

YES

Go to "2. Check short between power circuit and control circuit".

Repair short to ground in injector #4 power circuit and go to "Verification of Vehicle Repair".

Check short between power circuit and control circuit

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect injector #4 connector and ECM connector.

(3)

Check continuity between injector #4 connector terminal 1 and 2.

Specification : Discontinuity (Infinite Ω )

(4)

Is the measured resistance within the specification?

YES

Go to "Control Circuit Inspection".

Repair short between injector power circuit and control circuit and go to "Verification of Vehicle Repair".

Control Circuit Inspection

Check short to battery in control circuit

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect injector #4 connector.

(3)

IG KEY "ON"

(4)

Check the voltage of injector #4 connector terminal 1.

Secification : 0.4V~0.5V

(5)

Is the measured voltage within the specification?

YES

Go to "Component Inspection".

Repair short to battery in injector #4 control circuit and go to "Verification of Vehicle Repair".