Dodge 2004 Neon SX2 Diagnostic Manual page 542

DRIVEABILITY - NGC
P0551-POWER STEERING SWITCH PERFORMANCE —
TEST
3 Turn the ignition off.
Disconnect the Power Steering Pressure Switch harness connector.
Disconnect the PCM harness connector(s).
Measure the resistance between ground and the (K10) PSP Switch Signal circuit at
the Switch connector.
Is the resistance below 100 ohms?
Yes → Repair the short to ground in the (K10) PSP Switch Signal circuit.
→ Go To 4
No
4 Turn the ignition off.
Disconnect the Power Steering Pressure Switch harness connector.
Disconnect the PCM harness connector(s).
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 resistance of Power Steering (K10) PSP Switch Signal circuit from the
Power Steering Pressure Sensor harness connector to the appropriate terminal of
special tool #8815.
Is the resistance below 5.0 ohms?
Yes → Go To 5
→ Repair the open in the (K10) PSP Switch Signal circuit.
No
5 Turn the ignition off.
Disconnect the Power Steering Pressure Switch harness connector.
Ignition on, engine not running.
Connect a Jumper Wire to the (K10) PSP Switch Signal circuit at harness connector.
Using the DRBIII , while monitoring the Power Steering Pressure Switch.
Touch the Jumper Wire to the Ground circuit at the Power Steering Pressure Switch
harness connector several times.
Did the Power Steering Pressure Switch status change from Hi to Low?
Yes → Replace the Power Steering Pressure Switch.
→ Go To 6
No
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.
Repair
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.
206
Continued
APPLICABILITY
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