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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1936 (Wiper System & Washer System) >> Diagnostic Information and Procedures >> Rear Wiper Washer System Malfunction >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Wiper/Washer Switch

  1. With the WASH switch in the open position, test for infinite resistance between the low reference terminal 11 and the signal terminal 16.
    • If not the specified value, replace the multifunction switch.
  2. With the WASH switch in the closed position, test for less than 2 ohms between the ground terminal 11 and the signal terminal 15.
    • If greater than the specified range, replace the multifunction switch.

Washer Pump

  1. Ignition OFF, disconnect the harness connector at the washer pump.
  2. Install a 10A fused jumper wire between the control circuit terminal 1 and 12 volts. Install a jumper wire between the ground circuit terminal 2 and ground.
  3. Verify the washer pump is activated.
    • If the washer pump does not activate, replace the washer pump.
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