P0973

DTC P0973

DTC Descriptor
This diagnostic procedure supports the following DTC:

DTC P0973 Shift Solenoid 1 (SS1) Short to Ground

Conditions for Setting the DTC
^ No emergency mode.
^ TCM detects that the OFF signal (12 V) of the shift solenoid monitor, when the SS1 driver outputs the ON signal (0V) for 0.5 of a second continuously.
^ Detection continuously occurs 1 time.

Action Taken When the DTC Sets
^ The TCM will request the illumination of malfunction indicator lamp (MIL) and store the DTC when the TCM detects a failure on the first ignition cycle.
^ After failure detection the emergency mode is enabled.
^ No Lockup Control
^ No Engine Torque Reduction Control
^ No Engagement Pressure Control
^ No timing solenoid control for N - D
^ No 4th Gear
^ No Self-Learning Control

Conditions for Clearing the DTC
^ The TCM turns OFF the MIL when no further failures are detected on the next 3 consecutive ignition cycles.
^ The scan tool can clear the DTC from the TCM history.
^ The TCM clears the DTC from the TCM history memory after 40 consecutive ignition cycles without fault.
^ The TCM detects the ON signal of the SS1 monitor, when the SS1 driver outputs the ON signal for 1000 milliseconds continuously.

Cause of Failure
^ The wiring harness or the connector between the SS1 and the TCM
^ The SS1
^ The TCM

Step 1 - Step 8:

Step 9 - Step 12: