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Home >> Isuzu >> 2007 >> i-290 LS, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 36 (Wiper System & Washer System) >> Diagnostic Information and Procedures >> Windshield Washer Solvent Heater Malfunction >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

Heated Washer Fluid Switch

  1. Ignition OFF, disconnect the C4 harness connector at the turn signal/multifunction switch.
  2. Test for infinite resistance between the signal terminal 1 and the ground terminal 2 with the switch in the open position.
    • If less than infinite, replace the turn signal/multifunction switch switch.
  3. Test for less than 3 ohms between the signal terminal 1 and the ground terminal 2 with the switch in the closed position.
    • If greater than 3 ohms, replace the turn signal/multifunction switch.
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