3.
Has a problem been found?
YES
a.
Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
NO
a.
Go to "Signal 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 "Signal Circuit Inspection" procedure.
Ignition "ON" & Engine "ON".
Turn the steering wheel to the left or right.
Measure signal waveform between terminal "1,4,5" of the steering wheel angle sensor harness connector and chassis ground.
Specification : HIGH : 2.9±0.1V ~ 4.4±0.1V LOW : 1.2±0.1V ~ 2.1±0.1V
Is the measured signal waveform within specifications?
YES
Go to "Component Inspection" procedure.
NO
Check for open or short in steering wheel angle sensor harness between terminal "1,4,5" of the steering wheel angle sensorr harness connector and terminal "39,40,8" of the HECU harness connector. Repair as necessary and then go to "Verification of vehicle Repair" procedure.
If STN signal is LOW when the steering wheel is in center position, Check for improper installation of steering angle ensor. Repair as necessary and then go to "Verification of vehicle Repair" procedure.
If OK, substitute with a known-good steering wheel angle sensor and check for proper operation. If problem is corrected, replace steering wheel angle sensor and then go to "Verification of Vehicle Repair" procedure.
