## Wiper/Washers

#### Headlight Washer Control Unit Input Test (cont'd)

22-177

4. With the connector still disconnected, make these input tests at the connector.

- If any test indicates a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, replace the headlight washer control unit.

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