3.
Has a problem been found?
YES
a.
Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
NO
a.
Go to "Power Circuit Inspection" procedure.
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?
YES
Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
NO
Go to "Power Circuit Inspection" procedure.
Ignition "ON" & Engine "OFF".
Measure voltage between terminal "1" of the Yaw Rate & Lateral G sensor harness connector and chassis ground.
Specification : Approx. B+
Is the measured voltage within specifications?
YES
Go to "Ground Circuit Inspection" procedure.
NO
Check for open or short to GND in the Yaw Rate & Lateral G sensor harness between terminal "1" of the Yaw Rate & Lateral G sensor harness connector and battery +. Repair as necessary and then go to "Verification of vehicle Repair" procedure.
Ignition "OFF".
Disconnect Yaw Rate & Lateral G sensor connector.
Measure resistance between terminal "4" of the Yaw Rate & Lateral G sensor harness connector and chassis ground.
Specification : Approx. below 1Ω
Is the measured resistance within specifications?
YES
Go to "Signal Circuit Inspection" procedure.
NO
Check for open or short in the Yaw Rate & Lateral G sensor harness between terminal "4" of the Yaw Rate & Lateral G sensor harness connector and terminal "15" of the HECU harness connector . Repair as necessary and then go to "Verification of vehicle Repair" procedure.
Ignition "ON" & Engine "OFF".
Measure voltage between terminal "16,18,20" of the HECU harness connector and chassis ground.
Specification : Approx. 2.5V ( Voltage between terminal "16,20" of the HECU harness connector and chassis ground.)
Specification : Approx. above 2.1V and below 2.9V ( Voltage between terminal "18" of the HECU harness connector and chassis ground.)
Is the measured resistance within specifications?
YES
Go to "Self Test Circuit Inspection" procedure.
NO
Check for open or short in the Yaw Rate & Lateral G sensor harness between terminal "3,5,6" of the Yaw Rate & Lateral G sensor harness connector and terminal "16,18,20" of the HECU harness connector .
Repair as necessary and then go to "Verification of vehicle Repair" procedure.
If OK, Substitute with a known-good Yaw Rate & Lateral G sensor and check for proper operation. If problem is corrected, replace sensor and then go to "Verification of Vehicle Repair" procedure.
Measure wave between terminal "2" of the Yaw Rate & Lateral G sensor harness connector and chassis ground.
Is the measured wave within specifications?
YES
Go to "Component Inspection" procedure.
NO
Check for open or short to GND in the Yaw Rate & Lateral G sensor harness between terminal "2" of the Yaw Rate & Lateral G sensor harness connector and terminal "37" of thechassis ground. Repair as necessary and then go to "Verification of vehicle Repair" procedure.
If OK, Substitute with a known-good Yaw Rate & Lateral G sensor and check for proper operation. If problem is corrected, replace sensor and then go to "Verification of Vehicle Repair" procedure.
