Dodge 2004 Neon SX2 Diagnostic Manual page 426

DRIVEABILITY - NGC
P0129-BAROMETRIC PRESSURE OUT-OF-RANGE —
TEST
8 Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Ignition on, engine not running.
Measure the voltage of the (K7) 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 (K7) 5 Volt Supply
→ Go To 9
No
9 Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the (K7) 5 Volt Supply circuit at the
MAP Sensor harness connector.
Is the resistance below 100 ohms?
Yes → Repair the short to ground in the (K7) 5 Volt Supply circuit.
→ Go To 10
No
10 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 TERMI-
NALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL
MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS.
Measure the resistance of the (K7) 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 11
→ Repair the open in the (K7) 5 Volt Supply circuit.
No
11 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.
Repair
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 below 146 mA?
Yes → Refer to P0508 - IAC Valve Sense Low
→ Go To 13
No
ACTION
circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
90
Continued
APPLICABILITY
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