10681463

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.

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. )

Is the problem found?

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

Measure the voltage between power terminal of APS2 harness connector and chassis ground.

Specification : 4.8V~5.1V

Is the measured voltage within the specification?

	▶ Go to "Signal Circuit Inspection".
	▶ If the measured voltage is not within the specified value, find and repair short to battery in APS 2 power circuit and go to "Verification of Vehicle Repair".

Check open in signal circuit

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect APS connector and ECM connector.

(3)

Check continuity between signal terminal of APS2 harness connector and signal terminal of ECM harness connector.

Specification : Continuity (below 1.0Ω)

(4)

Is the measured resistance within the specification?

	▶ Go to "Check short to battery in signal circuit" as follows.
	▶ Repair open in signal circuit and go to "Verification of Vehicle Repair".

Check short to battery in signal circuit

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect APS connector and ECM connector.

(3)

IG KEY "ON".

(4)

Measure the continuity between signal terminal of APS harness connector and chassis ground.

Specification : 0.0V~0.1V

(5)

Is abnormal voltage detected in signal circuit with both connector disconnected?

	▶ Repair short to battery and go to "Verification of Vehicle Repair".
	▶ Go to "Ground Circuit Inspection".

Measure the voltage between power terminal of APS2 harness connector and ground terminal of APS2 harness connector. [ TEST "B" ]

( Power terminal : Check + prove , Ground terminal : Check - prove )

Specification : [TEST "A"] Voltage - [TEST "B"] Voltage = below 200mV

Is the measured voltage within the specification?

▶ Go to "Component Inspection".

▶ When "B" voltage is not detected : Repair open in ground circuit and go to "Verification of Vehicle Repair".

▶ When the voltage difference between "A" and "B" is above 200mV : Eliminate the causes of excessive resistance and go to "Verification of Vehicle Repair".