Chrysler PT Cruiser 2001 Service Manual Supplement page 2884

TRANSMISSION
P1794-SPEED SENSOR GROUND ERROR —
TEST
4 Turn ignition off to the lock position.
CAUTION: Remove the Starter Relay from the PDC. This will prevent the
vehicle from being started in gear.
Install Transmission simulator (Miller tool #8333) and the FWD Adapter Cable
kit.(Miller tool #8333-1).
Ignition on, engine not running.
Using the Transmission Simulator, set the rotary knob to the middle (3000/1250)
position.
Turn the Input/Output switch on.
With the DRBIII , observe the input and output speed sensor readings.
Does the input speed read 3000 RPM and the Output speed read 1250 RPM (within
50 RPM)?
Yes → Test Complete.
→ Go To 5
No
5 Turn ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the TRS harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the Speed Sensor Ground circuit from the TCM connector
to the Input Speed Sensor connector.
Is the resistance above 5.0 ohms?
Yes → Repair the open Speed Sensor Ground circuit.
→ Go To 6
No
6 If there are no possible causes remaining, replace the TCM.
View repair options.
Repair
ACTION
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
Replace the TCM.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
Continued
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APPLICABILITY
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All
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