Chrysler PT Cruiser 2001 Service Manual Supplement page 2795

P0725-ENGINE SPEED SENSOR CIRCUIT —
TEST
3 Turn ignition off to the lock position.
Disconnect the Powertrain Control Module (PCM) harness connector.
Disconnect the TCM harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the EATX RPM signal circuit between the TCM connector
and the PCM connector.
Is the resistance above 5.0 ohms?
Yes → Repair the open EATX RPM Signal circuit.
No
4 Turn ignition off to the lock position.
Disconnect the Powertrain Control Module (PCM) harness connector.
Disconnect the TCM harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between the EATX RPM Signal circuit and ground.
Is the resistance below 5.0 ohms?
Yes → Repair the EATX RPM Signal circuit for a short to ground.
No
5 Turn ignition off to the lock position.
Disconnect the Powertrain Control Module (PCM) harness connector.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
Measure the voltage of the EATX RPM Signal circuit in the PCM connector.
Is the voltage above 10.0 volts?
Yes → Repair the EATX RPM Signal circuit for a short to voltage.
No
6 Turn ignition off to the lock position.
Disconnect the Powertrain Control Module (PCM) harness connector.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
Measure the voltage between the Eatx RPM Signal circuit and ground at the PCM
harness connector.
Is the voltage between 4.5 and 5.5 volts?
Yes → Replace the PCM.
No
7 If there are no possible causes remaining, replace the TCM.
View repair options.
Repair
ACTION
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
→ Go To 4
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
→ Go To 5
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
→ Go To 6
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
→ Go To 7
Replace the TCM
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
Continued
47
TRANSMISSION
APPLICABILITY
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