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Diagnostic Trouble Code: 021
Diagnostic Trouble Code Name: Rear Defrost Request Switch Circuit
Vehicle Make: Holden
Vehicle Model: Epica (V250)
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:
Shift Solenoid 2 Control Circuit High Voltage
Possible Sensor Faults
TCM
Possible Related Diagnostic Trouble Codes
DTC P0976 or P0977
Circuit / System Description
The shift solenoid?(SS)?2 is part of the control solenoid (w/body and TCM) valve assembly which has no serviceable parts. SS?2 is a normally closed?(NC) ON/OFF solenoid and is controlled by the TCM through a low side driver. When the SS?2 is energized (ON), SS?2 fluid pressure is directed to the clutch select valve?3. Power to the SS?2 is supplied by the TCM through a high side driver?(HSD). The HSD protects the circuit and components from excessive current flow. If excessive current flow is detected, the HSD will turn OFF. When the fault is corrected, the HSD will reset.
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