Chrysler PT Cruiser 2001 Service Manual Supplement page 2808

TRANSMISSION
P0740-TORQ CONV CLU, NO RPM DROP AT LOCKUP —
TEST
3 Check the transmission fluid level and condition.
Is fluid level OK and free of contamination?
Yes → Go To 4
→ Repair the fluid level and condition as necessary.
No
4 Turn the ignition off.
Disconnect the TCC Solenoid harness connector.
Note: Check connectors - Clean/repair as necessary.
Turn the ignition on.
Measure the voltage of the Fused Ignition Switch Output circuit in the TCC Solenoid
harness connector.
Is the voltage above 10.0 volts?
Yes → Go To 5
→ Repair the Fused Ignition Switch Output circuit for an open.
No
5 Turn the ignition off.
Disconnect the TCC Solenoid harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the TCC Solenoid.
Is resistance between 30.0 and 50.0 ohms?
Yes → Go To 6
→ Replace TCC Solenoid.
No
6 Turn the ignition off.
Remove the Vehicle Speed Sensor.
Note: Check connectors - Clean/repair as necessary.
Look for any damage and for proper Speedo location. Check for standard front
wheels.
Were any problems found?
Yes → Repair as necessary.
→ Go To 7
No
7 Turn the ignition off.
At the COOLER IN port, install a 0 to 2070 KPa (300 PSI) gauge using a T . Ensure
the gauge hose is long enough to reach in driver's side of vehicle so gauge can be
monitored while driving.
Road test vehicle. Gear select in drive. While monitoring DRB, achieve 80 km/h (50
MPH).
Note: The gauge will read around 103 KPa (15 PSI) until lockup is achieved in 3rd
gear. If the TCC Solenoid is operating properly, the gauge pressure will jump when
lockup is achieved.
Did gauge pressure jump?
Yes → Go To 8
→ Refer to pertinent Service Information for proper service proce-
No
ACTION
Perform TRANSMISSION DTC VERIFICATION TEST.
Perform TRANSMISSION DTC VERIFICATION TEST.
Perform TRANSMISSION DTC VERIFICATION TEST.
Perform TRANSMISSION DTC VERIFICATION TEST.
dure on Torque Converter Assembly or stuck TCC Solenoid and
repair as necessary.
Perform TRANSMISSION DTC VERIFICATION TEST.
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Continued
APPLICABILITY
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