Diagnostic Procedure
WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSIS PROCEDURE - P0129-BAROMETRIC PRESSURE OUT-OF-RANGE LOW
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 |
NOTE:
Refer to any TSBs that may apply to this DTC before proceeding. Ignition on, engine not running.With the DRBIII®, read the MAP Sensor voltage.Is the voltage below 2.2 volts.Yes --> Go To 2No --> Go To 11 |
All |
| 2 | Turn the ignition off. Disconnect the MAP Sensor harness connector. Ignition on, engine not running. Measure the voltage of the (K6) 5 Volt Supply circuit in the MAP Sensor harness connector. Is the voltage between 4.5 to 5.2 volts? Yes --> Go To 3 No --> Go To 7 |
All |
| 3 | Turn the ignition off. Disconnect the MAP Sensor harness connector. Ignition on, engine not running. With the DRBIII®, monitor the MAP Sensor voltage. Is the voltage above 2.2 volts? Yes --> Replace the MAP Sensor. Perform POWERTRAIN VERIFICATION TEST VER - 5 . No --> Go To 4 |
All |
| 4 | Turn the ignition off. Disconnect the MAP Sensor harness connector. Disconnect the PCM harness connector.
CAUTION:
DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance of the (K1) MAP Signal circuit from the MAP Sensor harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes --> Go To 5 No --> Repair the open in the (K1) MAP Signal circuit. Perform POWERTRAIN VERIFICATION TEST VER - 5 . |
All |
| 5 | Turn the ignition off. Disconnect the MAP Sensor harness connector. Disconnect the PCM harness connector. Measure the resistance between ground and the (K1) MAP Signal circuit at the MAP Sensor harness connector. Is the resistance below 100 ohms? Yes --> Repair the short to ground in the (K1) MAP Signal circuit. Perform POWERTRAIN VERIFICATION TEST VER - 5 . No --> Go To 6 |
All |
| 6 |
NOTE:
Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. If there are no possible causes remaining, view repair.RepairReplace and program the Powertrain Control Module in accordance with the Service Information.Perform POWERTRAIN VERIFICATION TEST VER - 5 . |
All |
| 7 | Turn the ignition off. Disconnect the MAP Sensor harness connector. Ignition on, engine not running. Measure the voltage of the (K6) 5 Volt Supply circuit in the MAP Sensor harness connector. Is the voltage above 5.2 volts? Yes --> Repair the short to battery voltage in the (K6) 5 Volt Supply circuit. Perform POWERTRAIN VERIFICATION TEST VER - 5 . No --> Go To 8 |
All |
| 8 | Turn the ignition off. Disconnect the MAP Sensor harness connector. Disconnect the PCM harness connector. Measure the resistance between ground and the (K6) 5 Volt Supply circuit at the MAP Sensor harness connector. Is the resistance below 100 ohms? Yes --> Repair the short to ground in the (K6) 5 Volt Supply circuit. Perform POWERTRAIN VERIFICATION TEST VER - 5 . No --> Go To 9 |
All |
| 9 | Turn the ignition off. Disconnect the MAP Sensor harness connector. Disconnect the PCM harness connector.
CAUTION:
DO NOT PROBE THE PCM HARNESS CONNECTORS. PROBING THE PCM HARNESS CONNECTORS WILL DAMAGE THE PCM TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure the resistance of the 5 Volt Supply circuit from the MAP Sensor harness connector to the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes --> Go To 10 No --> Repair the open in the (K6) 5 Volt Supply circuit. Perform POWERTRAIN VERIFICATION TEST VER - 5 . |
All |
| 10 |
NOTE:
Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary. If there are no possible causes remaining, view repair.RepairReplace and program the Powertrain Control Module in accordance with the Service Information.Perform POWERTRAIN VERIFICATION TEST VER - 5 . |
All |
| 11 | Start the engine.
NOTE:
If the engine will not idle, maintain an engine speed between 800 and 1500 RPM. Allow the engine to idle. With the DRBIII®, read the IAC Current. Is the IAC Current below 146 mA? Yes --> Refer to P0508 - IAC VALVE SENSE LOW Perform POWERTRAIN VERIFICATION TEST VER - 5 . No --> Go To 12 |
All |
| 12 | Start the engine.
NOTE:
If the engine will not idle, maintain an engine speed between 800 and 1500 RPM. Allow the engine to idle. With the DRBIII®, read the IAC Current. Is the IAC Current above 999 mA? Yes --> Refer to P0509 - IAC VALVE SENSE CIRCUIT HIGH Perform POWERTRAIN VERIFICATION TEST VER - 5 . No --> Refer to the INTERMITTENT CONDITION . Perform POWERTRAIN VERIFICATION TEST VER - 5 . |
All |