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 - P0551-POWER STEERING SWITCH PERFORMANCE
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 | Ignition on, engine not running. With the DRBIII®, read DTCs and record the related Freeze Frame data. Is the Good Trip Counter displayed and equal to zero? Yes --> Go To 2 No --> Refer to the INTERMITTENT CONDITION . Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC . |
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| 2 | Turn the ignition off. Disconnect the Power Steering Pressure Switch harness connector. Measure the resistance between Ground and the PSP Switch (Z1) ground circuit at the Power Steering Pressure Switch connector. Is the resistance below 5.0 ohms? Yes --> Go To 3 No --> Repair the open in the PSP Switch (Z1) ground circuit. Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC . |
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| 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. Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC . No --> Go To 4 |
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| 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 TERMINALS RESULTING IN POOR TERMINAL TO PIN CONNECTION. INSTALL MILLER SPECIAL TOOL #8815 TO PERFORM DIAGNOSIS. Measure resistance of Power Steering 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 No --> Repair the open in the (K10) PSP Switch Signal circuit. Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC . |
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| 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. Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC . No --> Go To 6 |
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| 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 - 2 - NGC . |
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