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P1593-SPEED CONTROL SWITCH 1 STUCK (5.7L) (CONTINUED) 5. S/C SWITCH SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE Disconnect the C3 PCM harness connector. Measure the voltage on the (V371) and (V372) S/C Switch Signal cir- Is the voltage above 5.0 volts? Yes >> Repair the short to battery voltage in the (V371) or (V372) S/C Switch Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 6 6. STEERING COLUMN CONTROL MODULE Turn the ignition off. Disconnect the C1 and C3 SCCM harness connectors per Service Information. Measure the resistance of the (V371/V71) and (V372/V72) S/C Switch Signal circuits between the C1 and C3 Measure the resistance of the (V397/V937) Switch Return circuit between the C1 and C3 SCCM connectors. Is the resistance above 5.0 ohms? Yes >> Replace the SCCM per Service Information. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Go To 7 NOTE: Connect the Steering Column Control Module harness connectors per Service Information before 9 - 804 ENGINE ELECTRICAL DIAGNOSTICS WK |