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

3.

Has a problem been found?

YES

a.

Repair as necessary and go to "Verification Vehicle Repair" procedure

NO

a.

Go to "W/Harness Inspection" procedure

Signal Circuit Inspection
1.

Check for open/short circuit in harness

(1)

Ignition "OFF"

(2)

Disconnect Vehicle speed sensor.

(3)

Ignition "ON"

(4)

Measure voltage between Vehicle speed sensor signal line and chassis ground

a.

Specification :Approx. 9.5V

(5)

Is the measured voltage within specifications?

YES

a.

Go to "Power circuit Inspection" procedure.

NO

a.

Check for open/short circuit in signal harness. Repair as necessary and go to "Verification of Vehicle Repair" procedure.

Power Supply Circuit Inspection
1.

Check for open/short circuit in harness

(1)

Ignition "OFF"

(2)

Disconnect Vehicle speed sensor.

(3)

Ignition "ON"

(4)

Measure voltage between Vehicle speed sensor power terminal and chassis ground

a.

Specification : 9~16 V

(5)

Is the measured voltage within specifications?

YES

a.

Go to "Ground circuit Inspection" procedure.

NO

a.

Check for open/short circuit in power harness. Repair as necessary and go to "Verification of Vehicle Repair" procedure.

Ground Circuit inspection
1.

Check for open/short circuit in harness

(1)

Ignition "OFF"

(2)

Disconnect Vehicle speed sensor.

(3)

Ignition "ON"

(4)

Measure voltage between Vehicle speed sensor signal line and chassis ground

(5)

Measure voltage between Vehicle speed sensor power and ground terminal

a.

Specification : |(Voltage from procedure 4) - (Voltage from procedure 5)| < 200mV

(6)

Is the diffrence between two measured voltage within specifications?

YES

a.

Go to "Component Inspection" procedure.

NO

a.

Check for open/short circuit in ground harness. Repair as necessary and go to "Verification of Vehicle Repair" procedure.

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