FixVault

DTC Detection Logic

DTC DETECTION LOGIC

DTC Item (CONSULT-III screen terms) A/T CHECK indicator lamp judgment flicker Diagnostic item is detected when... Possible cause
P1730 A/T INTERLOCK 12th Except during shift change, the gear position and ATF pressure switch states are monitored and comparative judgment made.
  • Harness or connectors (Solenoid and switch circuit is open or shorted.)
  • Low coast brake solenoid valve
  • ATF pressure switch 2
NOTE: When the vehicle is driven fixed in 2nd gear, a turbine revolution sensor malfunction is displayed, but this is not a turbine revolution sensor malfunction.