P1790-Fault Immediately After Shift - Chrysler PT Cruiser 2001 Service Manual Supplement

TRANSMISSION
Symptom:

P1790-FAULT IMMEDIATELY AFTER SHIFT

When Monitored and Set Condition:
P1790-FAULT IMMEDIATELY AFTER SHIFT
When Monitored: After a speed ratio error is stored.
Set Condition: This code is set if the associated speed ratio code is stored within 1.3
seconds after a shift.
FAULT AFTER SHIFT
TEST
1 Check fluid level and condition and adjust as necessary
Visually inspect connectors and wiring harness. Repair as necessary.
Check for leaks or other visible damage. Repair as necessary.
Perform the shift lever position test and adjust the linkage as necessary.
Connect a battery charger to the vehicle. Ensure the battery is fully charged.
With the DRBIII , read the PCM DTC's. Check and repair all PCM DTC's before
performing transmission diagnostics.
With the DRBIII , read the TCM DTC's.
Note: Check 1 trip failures and diagnose them as DTC's (Hard codes)
If you have a Gear Ratio DTC, check and record all CVI's.
Most DTC's set on start up but some must be set by driving the vehicle.
Note: Verify flash level of transmission controller. Some problems are
corrected by software upgrades to the transmission controller.
NOTE: Check for applicable TSB's related to the problem.
Perform this procedure prior to symptom diagnosis.
Continue
2 This test is set along with a gear ratio DTC. Perform the appropriate test for the Gear
Ratio DTC stored.
Note: Check 1 trip failures if there are no gear ratio codes current.
View repair options.
Repair
POSSIBLE CAUSES
ACTION
Go To 2
Perform appropriate gear ratio DTC test.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
126
APPLICABILITY
All
All