Terminal and Connector Inspection
1.

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

2.

Thoroughly check all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.

3.

Has a problem been found?

▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure.

▶ Go to "Accelerator Pedal Position Sensor Circuit Inspection" procedure.

Accelerator Pedal Position Sensor Circuit Inspection
■ Power Circuit Inspection
1.

Ignition switch "OFF"

2.

Refer to "Shop Manual" and disconnect APS connector.

3.

Ignition switch "ON"

4.

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

Specification :Approx. 5V

5.

Ignition switch "OFF"

6.

Refer to "Shop Manual" and disconnect APS connector.

7.

Ignition switch "ON"

8.

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

Specification : Approx. 5V

9.

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.

■ Ground Circuit Inspection
10.

Ignition switch "OFF"

11.

Disconnect battery (-) cable.

12.

Refer to "Shop Manual" and disconnect APS connector.

13.

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

Specification : Approx. below 1Ω

14.

Ignition switch "OFF"

15.

Disconnect battery (-) cable.

16.

Refer to "Shop Manual" and disconnect APS connector.

17.

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

Specification : Approx. below 1Ω

18.

Ignition switch "OFF"

19.

Refer to "Shop Manual" and disconnect APT connector.

20.

Ignition switch "ON"

21.

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

22.

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

23.

Ignition switch "OFF"

24.

Refer to "Shop Manual" and disconnect APT connector.

25.

Ignition switch "ON"

26.

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

27.

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

28.

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.

■ Signal Circuit Inspection
29.

Ignition switch "OFF"

30.

Refer to "Shop Manual" and disconnect APS connector.

31.

Ignition switch "ON"

32.

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

Specification : 0V

33.

Ignition switch "OFF"

34.

Refer to "Shop Manual" and disconnect APS connector.

35.

Ignition switch "ON"

36.

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

Specification : 0V

37.

Ignition switch "OFF"

38.

Disconnect battery (-) cable.

39.

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

40.

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

41.

Ignition switch "OFF"

42.

Disconnect battery (-) cable.

43.

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

44.

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

45.

Is the measured value within specification?

▶ Go to "Brake Switch Circuit Inspection" procedure.

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

Brake Switch Circuit Inspection
■ Power Circuit Inspection
1.

Ignition switch "OFF"

2.

Refer to "Shop Manual" and disconnect brake switch connector.

3.

Ignition switch "ON"

4.

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

Specification : B+

5.

Ignition switch "OFF"

6.

Refer to "Shop Manual" and disconnect brake switch connector.

7.

Ignition switch "ON"

8.

Measure the voltage between brake lamp switch power terminal of brake switch harness connector and chassis ground.

Specification : B+

9.

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.

■ Signal Circuit Inspection
10.

Ignition switch "OFF"

11.

Connect VMI to GDS and set up the Oscilloscope.(2 Channel):

Channel A (+) : Power terminal (Brake Switch Harness Connector)

Channel A (-) : Ground

Channel B (+) : brake lamp switch power terminal (Brake Switch Harness Connector)

Channel B (-) : Ground

12.

Ignition switch "ON" & Engine "OFF"

13.

Inspection condition : Ignition switch "ON" & Brake pedal operation

Specification : Brake pedal operation - Channel (A) : Approx. 0V / Channel (B) : B+

Brake pedal non-operation - Channel (A) : B+ / Channel (B) : Approx. 0V

14.

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.

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