10644030

Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.

Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

Has a problem been found?

	▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.
	▶ Go to "Power Circuit Inspection" procedure.

Ignition switch "OFF"

Refer to "Shop Manual" and disconnect APS connector.

Ignition switch "ON"

Measure the voltage between APS1 power terminal of APS harness connector and chassis ground.

Specification :Approx. 5V

Ignition switch "OFF"

Refer to "Shop Manual" and disconnect APS connector.

Ignition switch "ON"

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

Specification : Approx. 5V

Is the measured value within specification?

	▶ Go to "Ground Circuit Inspection" procedure.
	▶ Inspect and repair open or short in circuit, and then go to "Verification of Vehicle Repair" procedure.

Ignition switch "OFF"

Disconnect battery (-) cable.

Refer to "Shop Manual" and disconnect APS connector.

Measure the resistance between APS 1 ground terminal of APS harness connector and chassis ground.

Specification :Approx. below 1Ω

Ignition switch "OFF"

Disconnect battery (-) cable.

Refer to "Shop Manual" and disconnect APS connector.

Measure the resistance between APS 2 ground terminal of APS harness connector and chassis ground.

Specification : Approx. below 1Ω

Ignition switch "OFF"

10.

Refer to "Shop Manual" and disconnect APT connector.

11.

Ignition switch "ON"

12.

Measure the voltage between APS 1 power terminal of APS harness connector and chassis ground.(A)

13.

Measure the voltage between APS 1 power terminal and APS 1 ground terminal of APS harness connector.(B)

Specification :Difference in (A) and (B) is less than 200 mV

14.

Ignition switch "OFF"

15.

Refer to "Shop Manual" and disconnect APT connector.

16.

Ignition switch "ON"

17.

Measure the voltage between APS 2 power terminal of APS harness connector and chassis ground.(A)

18.

Measure the voltage between APS 2 power terminal and APS 2 ground terminal of APS harness connector.(B)

Specification : Difference in (A) and (B) is less than 200 mV

19.

Is the measured value within specification?

	▶ Go to "Signal Circuit Inspection" procedure.
	▶ Inspect and repair open or short in circuit, and then go to "Verification of Vehicle Repair" procedure.

Ignition switch "OFF"

Disconnect battery (-) cable.

Refer to "Shop Manual" and disconnect APS connector.

Measure the voltage between APS 1 signal terminal of APS harness connector and chassis ground.

Specification :0V

Ignition switch "OFF"

Refer to "Shop Manual" and disconnect APS connector.

Ignition switch "ON"

Measure the voltage between APS 2 signal terminal of APS harness connector and chassis ground.

Specification : 0V

Ignition switch "OFF"

10.

Disconnect battery (-) cable.

11.

Refer to "Shop Manual" and disconnect APS and ECM connector.

12.

Measure the resistance between APS 1 signal terminal of APS harness connector and APS 1 signal of ECM harness connector.

Specification :Approx. below 1 Ω

13.

Ignition switch "OFF"

14.

Disconnect battery (-) cable.

15.

Refer to "Shop Manual" and disconnect APS and ECM connector.

16.

Measure the resistance between APS 2 signal terminal of APS harness connector and APS 2 signal of ECM harness connector.

Specification : Approx. below 1 Ω

17.

Is the measured value within specification?

	▶ Go to "Component Inspection" procedure.
	▶ Inspect and repair open or short in circuit, and then go to "Verification of Vehicle Repair" procedure.