Chrysler PT Cruiser 2001 Service Manual Supplement page 2523

P0122-THROTTLE POSITION SENSOR VOLTAGE LOW —
TEST
3 Turn the ignition off.
Disconnect the Throttle Position Sensor harness connector.
Note: Check connectors - Clean/repair as necessary.
Turn the ignition on.
Measure the Throttle Position Sensor 5-Volt Supply circuit at the TPS harness
connector.
Is the voltage below 4.0 volts?
Yes → Go To 4
→ Go To 6
No
4 Turn the ignition off.
Disconnect the Throttle Position Sensor harness connector.
Disconnect the PCM harness connectors.
Measure the resistance between the TPS 5-Volt Supply circuit and ground.
Is the resistance below 5.0 ohms?
Yes → Repair the TPS 5-Volt Supply Circuit for a short to ground.
→ Go To 5
No
5 Turn the ignition off.
Disconnect the Throttle Position Sensor harness connector.
Disconnect the PCM harness connectors.
Measure the resistance of the TPS 5-Volt Supply Circuit from the TPS harness
connector to the PCM harness connector.
Is the resistance below 5.0 ohms?
Yes → Go To 6
→ Repair the TPS 5-Volt Supply circuit for an open.
No
6 Turn the ignition off.
Disconnect the Throttle Position Sensor harness connector.
Disconnect the Powertrain Control Module harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the TP Sensor Signal circuit to ground at the PCM harness connector.
Is the resistance below 5.0 ohms?
Yes → Repair the Throttle Position Sensor Signal circuit for a short to
→ Go To 7
No
7 Turn the ignition off.
Disconnect the Throttle Position Sensor harness connector.
Disconnect the Powertrain Control Module connector harness.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between the Sensor Signal Circuit and the Sensor Ground
Circuit at the PCM harness connector.
Is the resistance below 5.0 ohms?
Yes → Repair the Sensor Signal Circuit shorted to Sensor Ground
→ Go To 8
No
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
ground.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
DRIVEABILITY - GAS
63
Continued
APPLICABILITY
All
All
All
All
All