Wiper/Washers

Headlight Washer Control Unit Input Test (cont'd)

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  1. With the connector still disconnected, make these input tests at the connector.
Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained
2 RED/YEL Under all conditions Check for voltage to ground: There should be battery voltage
  • Blown No. 14 (40A) fuse in the under-hood fuse/relay box
  • Blown No. 15 (30A) fuse in the under-dash fuse/relay box
  • An open in the wire
4 WHT/BLU Ignition switch ON (II) and washer switch ON Check for voltage to ground:

There should be battery voltage
  • Blown No. 20 (20A) fuse in the under-dash fuse/relay box
  • Faulty washer switch
  • An open in the wire
5 RED/YEL Headlight switch ON Check for voltage to ground: There should be battery voltage
  • Blown No. 15 (15A) fuse in the under-hood fuse/relay box
  • Faulty headlight relay 2
  • Faulty combination light switch
  • An open in the wire
6 BLK Under all conditions Check for continuity to ground: There should be continuity.
  • Poor ground (G502)
  • An open in the wire
8 WHT/RED Connect the No. 2 terminal to the No. 8 terminal with a jumper wire. Check motor operation: The headlight washer motor should run
  • Faulty headlight washer motor
  • An open in the wire