P1793

F: P1793. TCM IGNITION SWITCHED POWER MALFUNCTION
CHECK TRANSMISSION CONTROL MODULE IGNITION SWITCHED POWER SUPPLY CIRCUIT.
1. Disconnect TCM electrical connector, JB131.
2. Turn the ignition switch to the ON position.
3. Measure the voltage between JB131, pin 36 (WU) and GROUND.
^ Is the voltage less than 10 volts?
-> Yes
REPAIR the circuit between TCM electrical connector JB131, pin 36 (WU) and the battery power bus 1 (this circuit includes the TCM relay and power distribution fuse box).

CHECK TRANSMISSION CONTROL MODULE IGNITION SWITCHED POWER SUPPLY CIRCUIT.
1. Measure the voltage between JB131, pin 54 (WU) and GROUND.
^ Is the voltage less than 10 volts?
-> Yes
REPAIR the circuit between JB131, pin 54 (WU) and the battery power bus 1 (this circuit includes the TCM relay and power distribution fuse box).
Contact dealer technical support for advice on possible module failure.