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Diagnostic Trouble Code: B0021
Diagnostic Trouble Code Name: Passenger Side Deployment Loop
Vehicle Make: Chevrolet
Vehicle Model: Cruze (J300)
Diagnostic Code Entered By: ZerOne
Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Please Note: The DTC Information provided has been randomly generated.
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Diagnostic Trouble Code Description:
Accelerator Pedal Position Sensor 1-2 Correlation
Possible Sensor Faults
ECM
Possible Related Diagnostic Trouble Codes
DTC P2122, P2123, P2127, P2128, or P2138
Circuit / System Description
The throttle actuator control (TAC) system uses two accelerator pedal position (APP) sensors to monitor the accelerator pedal position. The APP sensors 1 and 2 are located within the pedal assembly. Each sensor has a 5?V reference circuit, a low reference circuit, and a signal circuit.
Two processors are also used to monitor the TAC motor system data. Both processors are located within the engine control module (ECM). Each signal circuit provides both processors with a signal voltage proportional to pedal movement. The processors share and monitor data to verify that the indicated APP sensor calculation is correct.
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