P0743

Conditions for Setting the DTC
- The Transmission Control Module (TCM) detects an OFF signal from the lockup solenoid monitor for 630 milliseconds when the lockup solenoid driver outputs the ON signal. (The TCC circuit is shorted to ground.)
- The TCM detects an ON signal from the lockup solenoid monitor for 500 milliseconds when the lockup solenoid driver outputs the OFF signal. (The TCC circuit is open.)

Action Taken When the DTC Sets
- TCM will request the illumination of MIL and store DTC when TCM detects failures on two consecutive ignition cycle.
- No TCC lockup control.

Conditions for Clearing the MIL/Power Lamp/DTC
- The TCM turns off the MIL when no further failures detected for three consecutive ignition cycles.
- The Scan-100 scan tool can clear the DTC from the TCM history.
- The TCM clears the DTC from the TCM history memory after forty consecutive ignition cycles without fault while it does not detect a failure for 1 second.