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2009 > G 1.1 SOHC > Steering > Electronic Power Steering >

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Component Inspection
Check torque sensor
1. Ignition "OFF".
2. Connect Scantool to Data Link Connector(DLC).
3. Engine "ON " and select "SCOPEMETER FUNCTION" on scantool.
4. operate the steering wheel to the left and right.
5. Measure output signal between terminal "2"of sensor harness connector and chassis ground.
6. Measure output signal between terminal "4"of sensor harness connector and chassis ground.
a. Specification : [ Main sensor output - Sub sensor output ] < 0.75 mA
Fig.1) When turning steering wheel to right : Check whether signal voltage rises to maximum 4V based on 2.5V and main sensor signal is the same as sub
sensor signal. [Main sensor - Sub sensor] < 0.75 mA
Fig.2) When turning steering wheel to left : Check whether signal voltage descends to maximum 1V based on 2.5V and main sensor signal is the same as sub
sensor signal. [Main sensor - Sub sensor] < 0.75 mA
7. Is torque sensor main and sub signal within specifications?
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Substitute with a known-good EPS CM and check for proper operation.
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If the problem is corrected, replace EPS CM and then go to "Verification of Vehicle Repair" procedure.
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Check torque sensor for contamination, deterioration, or damage.
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Substitute with a known-good steering column assembly and check for proper operation.
Substitiuion is necessary because torque sensor is located in steering column assembly and disconnect is impossible.
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