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Diagnostic Trouble Code: 7
Diagnostic Trouble Code Name: Automatic Temperature Controller
Vehicle Make: Chevrolet
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:
Transmission Fluid Temperature Switch 4 Circuit Low Voltage
Possible Sensor Faults
TCM
Possible Related Diagnostic Trouble Codes
DTC P0842, P0843, P0872, P0873, P0877, P0878, P0989, or P0990
Circuit / System Description
The TFP switch?4 is part of the control solenoid (w/body and TCM) valve assembly. The control solenoid (w/body and TCM) valve assembly has no seviceable parts. The TCM supplies 12?volts to the TFP switch?4 on the TFP switch?4 signal circuit; the TFP switch?4 has an internal case ground. TFP switch?4 is normally closed, Low. When oil pressure is present at the TFP switch?4, the switch is open, high. The normally low clutch PC solenoid?5 controls the transmission fluid to the 1-2-3-4 clutch. The TCM monitors the normally closed TFP switch?4 signal circuit to determine the 1-2-3-4 clutch status.
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