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Home >> Chevrolet >> 2017 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Automatic Transmission - 5ET50 (MKE)) >> Diagnostic Information and Procedures >> DTC P0721: Output Speed Sensor Performance >> Circuit/System Verification

Circuit/System Verification

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  1. Operate the vehicle at 16 - 32 km/h (10 - 20 mph), observe the scan tool Transmission OSS parameter. The reading should be greater than 150 RPM and not drop out.
  2. Observe the scan tool OSS Supply Voltage parameter. The reading should display OK.
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