Chrysler PT Cruiser 2001 Service Manual Supplement page 2649

P1496-5 VOLT SUPPLY, OUTPUT TOO LOW —
TEST
3 Turn the ignition off.
Disconnect the Throttle Position Sensor harness connector.
Turn the ignition on.
Connect a voltmeter to the 5 Volt Supply circuit at the Throttle Position Sensor
harness connector.
Record Voltage Reading.
Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Turn the ignition on.
Read and record the 5 Volt Supply Circuit voltage at the Throttle Position Sensor
harness connector.
Did the 5 Volt Supply go from below 4.5 volts to above 4.5 volts when the MAP was
disconnected?
Yes → Replace the MAP Sensor.
→ Go To 4
No
4 Turn the ignition off.
Disconnect the Throttle Position Sensor harness connector.
Disconnect the MAP Sensor harness connector.
Disconnect the PCM harness connectors.
Measure the resistance of the 5 Volt Supply Circuit from the Throttle Position Sensor
harness connector to ground.
Is the resistance below 5.0 ohms?
Yes → Repair the 5 Volt Supply Circuit for a short to ground.
→ Go To 5
No
5 If there are no possible causes remaining, view repair.
Repair
6 Note: The Throttle Position Sensor harness connector must be connected
during this test.
Disconnect the MAP Sensor harness connector.
Turn the ignition on.
Measure the voltage of the 5 Volt Supply circuit at the MAP Sensor harness
connector.
Is the Voltage below 4.5 Volts?
Yes → Replace the Throttle Position Sensor.
→ Go To 7
No
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Replace the Powertrain Control Module.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
DRIVEABILITY - GAS
Continued
189
APPLICABILITY
All
All
All
All