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.

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

Has a problem been found?

	▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
	▶ For M/T applied vehicle, go to "Power Circuit Inpsection" procedure. ▶ For A/T applied vehicle, go to "CAN Communication Line Inspection" procedure.

Ignition switch "OFF"

Refer to "Shop Manual" and disconnect VSS connector.

Ignition switch "ON"

Measure the voltage between Pin No. 2 (Power) terminal of VSS harness connector and chassis ground.

Is the measured value withing 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 VSS connector.

Measure the resistance between Pin No. 1 (Ground) terminal of VSS harness connector and chassis ground.

Re-connect battery (-) cable.

Ignition switch "ON"

Measure the voltage between Pin No. 2 (Power) terminal of VSS harness connector and chassis ground.(A)

Measure the voltage between Pin No. 2 (Power) terminal and Pin No. 1 (Ground) terminal of VSS harness connector.(B)

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"

Refer to "Shop Manual" and disconnect VSS connector.

Ignition switch "ON"

Measure the voltage between Pin No. 3 (Signal) terminal of VSS harness connector and chassis ground.

Is the measured value withing specification?

	▶ Go to "Component 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 ECM and HECU connector.

Measure the resistance between Pin No. 64 (C-CAN High) terminal of ECM harness connector and Pin No. 14 (C-CAN High) terminal of HECU harness connector.

Measure the resistance between Pin No. 81 (C-CAN Low) terminal of ECM harness connector and Pin No. 2 (C-CAN Low) terminal of HECU harness connector.

Is the measured value within specification?

	▶ Go to "Component Inspection" procedure.
	▶ Repair open in C-CAN circuit and then go to "Verification of vehicle Repair" procedure.