Chrysler PT Cruiser 2001 Service Manual Supplement page 2813

P0743-TORQUE CONVERTER CLUTCH SOLENOID/TRANS RELAY CIR -
CUITS —
Continued
TEST
3 Turn the ignition off.
Disconnect the TCC Solenoid harness connector.
Disconnect the PCM harness connectors.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the TCC Solenoid Control circuit.
Is the resistance below 5.0 ohms?
Yes → Go To 4
→ Repair the TCC Solenoid Control circuit for an open.
No
4 Turn the ignition off.
Disconnect the TCC Solenoid harness connector.
Note: Check connectors - Clean/repair as necessary.
Turn the ignition on.
Using the DRB, actuate the TCC Solenoid.
Using a 12 Volt Test Light, check for voltage between the TCC Solenoid harness
connector cavities.
Does the test light cycle on and off?
Yes → Replace the TCC Solenoid.
→ Go To 5
No
5 Turn the ignition off.
Disconnect the TCC Solenoid harness connector.
Disconnect the PCM harness connectors.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between ground and the TCC Solenoid Control circuit.
Is the resistance above 100k ohms?
Yes → Go To 6
→ Repair the TCC Solenoid Control circuit for a short to ground.
No
6 If there are no possible causes remaining, view repair.
Repair
7 At this time, the conditions required to set the DTC are not present.
Note: Use the Freeze Frame Data to help duplicate the conditions that set
the DTC. Pay particular attention to the DTC set conditions, such as, VSS,
MAP, ECT, and Load.
Note: Visually inspect the related wiring harness. Look for any chafed,
pierced, pinched, or partially broken wires.
Note: Visually inspect the related wiring harness connectors. Look for
broken, bent, pushed out, or corroded terminals.
Note: Refer to any technical service bulletins that may apply.
Were any problems found?
Yes → Repair as necessary in accordance with the Service Information.
→ Test Complete.
No
ACTION
Perform TRANSMISSION DTC VERIFICATION TEST.
Perform TRANSMISSION DTC VERIFICATION TEST.
Perform TRANSMISSION DTC VERIFICATION TEST.
Replace the Powertrain Control Module.
Perform TRANSMISSION DTC VERIFICATION TEST.
Perform TRANSMISSION DTC VERIFICATION TEST.
65
TRANSMISSION
APPLICABILITY
All
All
All
All
All