P1740

Test 1 - 6:

Test 7 - 12:

Test 13 - 17:

Test 18 - 23:

SYMPTOM
P1740-TCC O/D SOL PERFORMANCE

WHEN MONITORED
The Torque Convertor Clutch (TCC) and Overdrive Clutch (O/D) will be tested each time the PCM requests TCC engagement in 3rd gear and O/D.

SET CONDITION
The code will set if the expected RPM drop is not achieved while attempting to engage TCC or O/D. This indicates a malfunctioning torque convertor or overdrive clutch.

POSSIBLE CAUSES
- P1765 DTC Present
- Engine DTCS present
- PTO engaged (if equipped)
- Transmission DTCS present
- Transmission temperature too cold
- Fuel level low
- Transfer case in low range (if equipped)
- Check transmission fluid level
- Check transmission fluid-stall
- Oil pan contains excessive debris
- 3-4 shift solenoid
- Shaft or seal damage
- TCC solenoid
- Torque converter
- Intermittent wiring and connectors