Chrysler PT Cruiser 2001 Service Manual Supplement page 2856

TRANSMISSION
P1781-OD PRESSURE SWITCH SENSE CIRCUIT —
TEST
7 Turn ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the Transmission Solenoid/Pressure Switch connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the OD Pressure Switch Sense circuit from the TCM
connector to the transmission solenoid/pressure switch connector.
Is the resistance above 5.0 ohms?
Yes → Repair the open OD Pressure Switch Sense circuit.
→ Go To 8
No
8 Turn ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the Transmission Solenoid/Pressure Switch connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between the OD Pressure Switch Sense circuit and ground.
Is the resistance below 5.0 ohms?
Yes → Repair OD Pressure Switch circuit short to ground.
→ Go To 9
No
9 Turn ignition off to the lock position.
Disconnect the TCM harness connector.
Remove the Transmission Control Relay from the PDC.
Note: Check connectors - Clean/repair as necessary.
Connect a jumper wire between the Fused B(+) and Transmission Control Relay
Output circuits in the Transmission Control Relay connector (In PDC).
Ignition on, engine not running.
Measure the voltage of the OD Pressure Switch Sense circuit in the TCM connector.
Is the voltage above 3.0 volts?
Yes → Repair OD Pressure Switch Sense circuit short to voltage.
→ Go To 10
No
10 If there are no possible causes remaining, replace the TCM.
View repair options.
Repair
11 The conditions necessary to set the DTC are not present at this time. Using the
schematics as a guide, inspect the wiring and connectors specific to this circuit.
Wiggle the wires while checking for shorts and open circuits.
Were any problems found?
Yes → Repair defective wiring and/or connector as necessary.
→ Test Complete.
No
ACTION
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
Replace the TCM.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
108
Continued
APPLICABILITY
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