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Diagnostic Procedures

Fig 1: DTC P0121: Throttle Position Sensor Circuit Insufficient Activity (Steps 1-4)
G00248986Courtesy of GENERAL MOTORS CORP.
Fig 2: DTC P0121: Throttle Position Sensor Circuit Insufficient Activity (Steps 5-14)
G00248987Courtesy of GENERAL MOTORS CORP.
Fig 3: DTC P0121: Throttle Position Sensor Circuit Insufficient Activity (Steps 15-23)
G00248988Courtesy of GENERAL MOTORS CORP.
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