41TE NGC

P1790-FAULT IMMEDIATELY AFTER SHIFT



Theory of Operation

This DTC is not stored alone. It is stored if a Gear Ratio DTC is detected immediately after a shift. The existence of this DTC indicates a mechanical and/or hydraulic (not electrical) related problem. It should be noted however, that all mechanical problems don't necessarily result in this DTC. When this DTC exists, diagnosing the system should be based on the associated DTC and only mechanical causes should be considered.

- When Monitored:
After a Gear Ratio Error code is stored.

- Set Condition:
After a Gear Ratio Error DTC has already been set. The DTC is set if the fault happened within 1.3 seconds of a shift. The DTC set time will vary from 1.214 seconds to 15 seconds.





Always perform the 40/41TE Pre-Diagnostic Troubleshooting procedure before proceeding. Pre-Diagnostic Troubleshooting Procedure
FAULT AFTER SHIFT
1. This DTC is set along with a Gear Ratio DTC. Perform the appropriate test for the Gear Ratio DTC stored.

NOTE: Check Pending DTCs or 1 trip failures if there are no Active or Stored Gear Ratio DTCs.

Repair

- Perform the appropriate diagnostic procedure.
- Perform 40/41TE TRANSMISSION VERIFICATION TEST 40/41TE Transmission Verification Test