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P0551-POWER STEERING PRESSURE SWITCH PERFORMANCE (CONTINUED) 2. POWER STEERING PRESSURE SWITCH Turn the ignition off. Disconnect the Power Steering Pressure Switch harness connector. Ignition on, engine not running. Connect a jumper wire to the (K66) P/S Switch Signal circuit at the Use the scan tool to monitor the Power Steering Pressure Switch sta- Touch the other end of the jumper wire to the (Z988) Ground circuit at Did the Power Steering Pressure Switch status change from Yes >> Replace the Power Steering Pressure Switch. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 3 NOTE: Remove the jumper wire before continuing. 3. (K66) P/S SWITCH SIGNAL CIRCUIT OPEN Turn the ignition off. Disconnect the C3 PCM harness connector. CAUTION: Do not probe the PCM harness connectors. Probing Is the resistance below 5.0 ohms? Yes >> Go To 4 No >> Repair the open in the (K66) P/S Switch Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer HB ENGINE ELECTRICAL DIAGNOSTICS 9 - 583 |