Terminal and Connector Inspection
1.

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.

2.

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

3.

Has a problem been found?

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

▶ Go to "Power Circuit Inspection" procedure.

Power Circuit Inspection
■ Open or Short Check
1.

IG "ON".

2.

Measure voltage between power terminal of the Yaw Rate & Lateral G & longitudinal G sensor harness connector and chassis ground.

Specification : Approx. 12V

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3.

Is the measured value within specifications?

▶ Go to "Ground Circuit Inspection" procedure.

▶ Repair open or short in power circuit between the Yaw rate sensor harness connector and HECU harness connector and then, go to "Verification of vehicle Repair"

Ground Circuit Inspection
■ Open or Short Check
1.

IG "OFF".

2.

Disconnect yaw rate & lateral G & longitudinal G sensor connector.

3.

Measure resistance between ground terminal of the Yaw rate sensor harness connector and chassis ground.

Specification : Approx. below 1Ω

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4.

Is the measured value within specifications?

▶ Go to "Signal Circuit Inspection" procedure.

▶ Repair open or short in ground circuit between the Yaw rate sensor harness connector and HECU harness connector and then, go to "Verification of vehicle Repair"

Signal Circuit Inspection
■ Short Check (to ground)
1.

Ignition "OFF" & Engine "OFF".

2.

Disconnect yaw rate & lateral G & longitudinal G sensor, HECU connector.

3.

Measure resistance between CAN LOW terminal, CAN HIGH terminal of the Yaw rate sensor harness connector and chassis ground.

Specification : Approx. ∞ Ω

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4.

Is the measured value within specifications?

▶ Go to next procedure.

▶ Repair short to ground in CAN signal circuit in case of abnormal resistance measured and then go to "Verification of vehicle Repair" procedure.

■ Short Check (to battery)
5.

Ignition "ON" & Engine "OFF".

6.

Disconnect HECU connector.

7.

Measure voltage between CAN LOW terminal, CAN HIGH terminal of the HECU harness connector and chassis ground.

Specification : Approx. 0 V

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8.

Is the measured value within specifications?

▶ Go to "Component Inspection" procedure.

▶ Repair short to battery in CAN signal circuit in case of abnormal voltage measured and then, go to"Verification of vehicle Repair" procedure.

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