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P0591-SPEED CONTROL SWITCH 2 PERFORMANCE (CONTINUED) 4. (V72) S/C SWITCH NO.2 SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE Disconnect the C1 Steering Column Control Module harness connec- Ignition on, engine not running. Measure the voltage on the (V72) S/C Switch No.2 Signal circuit in the Is the voltage above 0 volts? Yes >> Repair the short to battery voltage in the (V72) S/C Switch No.2 Signal circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 5 5. STEERING COLUMN CONTROL MODULE Turn the ignition off. Measure the resistance of the (V372) S/C Switch No.2 Signal circuit between the C1 and C3 SCCM connections. Measure the resistance of the (V397) Switch Return circuit between the C1 and C3 SCCM connections. Is the resistance above 5.0 ohms? Yes >> Replace the Steering Column Control Module per Service Information. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Go To 6 9 - 672 ENGINE ELECTRICAL DIAGNOSTICS WK |