LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 1994 >> Probe Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 121 (Wiper/Washer System - Rear) >> Testing >> Wiper Circuit Test
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Wiper Circuit Test

WARNING: This page is about a different car, the 1994 Mercury Tracer and 1994 Ford Escort. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect WIPER fuse. If fuse is okay, go to next step. If fuse is blown, inspect Dark Blue/Green wire for short to ground. Repair circuit as necessary. If fuse does not blow again, go to next step.
  2. Turn ignition and rear wiper on. Inspect WIPER fuse again. If fuse is okay, Dark Blue/Green wire is not shorted to ground. If fuse blows again, replace wiper motor.
  3. Unplug rear wiper motor connector. Turn ignition on. Check for battery voltage on Dark Blue/Green wire at wiper motor harness connector. If battery voltage exists, go to next step. If battery voltage does not exist, repair open in Dark Blue/Green wire.
  4. Reconnect wiper motor wiring. Unplug wiper switch connector. Turn ignition on. Measure voltage on Dark Blue/Black wire at wiper switch connector. If battery voltage exists, go to next step. If battery voltage does not exist, repair open in Dark Blue/Black wire.
  5. Turn ignition off. Measure resistance of Black wire between wiper switch connector and ground. If resistance is less than 5 ohms, go to next step. If resistance is greater than 5 ohms, repair poor ground or open in Black wire.
  6. Unplug wiper switch connector. Connect jumper between Dark Blue/Black wire of wiper switch connector and ground. Turn ignition on. If wiper operates, replace wiper switch. If wiper motor does not operate, replace wiper motor.
scientia non olet · About LEMON Manuals