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Component Testing Heated Washer Fluid Switch 1. Ignition OFF, disconnect the harness connector at the instrument panel accessory switch assembly. 2. Test for infinite resistance between the switch signal circuit terminal 7 and the ground circuit terminal 3 with the switch in the open position. If less than infinite, replace the accessory switch assembly. 3. Test for less than 3 ohms between the switch signal circuit terminal 7 and the ground circuit terminal 3 with the switch in the closed position. If greater than 3 ohms, replace the accessory switch assembly. Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Accessory Switch Replacement (with RPO SLT) or Accessory Switch Replacement Windshield Washer Solvent Heater Replacement MOISTURE SENSING FEATURE INOPERATIVE Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provides an overview of each diagnostic category. Diagnostic Fault Information Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance Ignition Voltage 1 1 - - Outside Moisture Sensor 1 1 1 - Outside Moisture Sensor 1 1 1 - Ground - 1 - -
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Wipers and Washers - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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