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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1002 (Automatic Transmission (Re0F09B)) >> Component Diagnosis >> P0744 A/T TCC S/V Function (Lock -Up) >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTION LOGIC CHART

DTC Item (CONSULT-III screen term) Malfunction is detected when... Possible cause
P0744 A/T TCC S/V FNCTN
  • CVT cannot perform lock up even if electrical circuit is good.
  • TCM detects as irregular by comparing difference value with slip rotation.
  • There is a big difference between engine speed and primary speed sensor when TCM lock up signal is on.
  • Torque converter clutch solenoid valve
  • Hydraulic control circuit
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