P0783

Test 1:

Tests 2 - 3:

Tests 4 - 6:

Tests 7 - 8:

SYMPTOM
P0783 - 3-4 SHIFT SOLENOID, NO RPM DROP AT LOCKUP

WHEN MONITORED
Continuously with the key ON and the engine running.

SET CONDITION
This code will set if the expected engine RPM drop does not occur within 4 seconds of the gear change being requested by the PCM. Three consecutive bad tests are required to set the code.

POSSIBLE CAUSES
- Intermittent 3-4 solenoid
- Fluid level and condition
- Internal transmission problem - O/D clutch/seals or valve body contamination
- Oil burnt or oil pan has excessive debris