SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSFORD1999WINDSTAR BASE, VAN CARGO, 3.8 4REPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTPOWER MIRRORS SYSTEMSYSTEM TESTSTEST D: LEFT OR RIGHT MIRROR IS INOPERATIVE WITH SWITCH LOGIC (NON-HEATED MIRRORS)
1999 Ford Windstar Base, Van Cargo, 3.8 4

Test D: Left Or Right Mirror Is Inoperative With Switch Logic (Non-Heated Mirrors)

1999 Ford Windstar Base, Van Cargo, 3.8 4SECTION Test D: Left Or Right Mirror Is Inoperative With Switch Logic (Non-Heated Mirrors)
  1. Disconnect suspect rear view mirror harness connector. Using DVOM, measure voltage or resistance between ground and specified terminal on rear view mirror harness connector while moving mirror control switch to specified position. See REAR VIEW MIRROR CIRCUIT LOGIC TESTING  table. If all resistance and voltage measurements are as specified, replace suspect mirror motor. See REMOVAL & INSTALLATION  . If any resistance or voltage measurement is not as specified, go to next step.
    REAR VIEW MIRROR CIRCUIT LOGIC TESTING

    Switch Position Wire Color Terminal No. Result
    Driver's Rear View Mirror
    Left Red 1 (1)
    Right Red 1 (2)
    Up Dark Blue/Yellow 2 (1)
    Down Dark Blue/Yellow 2 (2)
    Left/Up Yellow 3 (2)
    Right/Down Yellow 3 (1)
    Passenger's Rear View Mirror
    Left Dark Green 1 (1)
    Right Dark Green 1 (2)
    Up Violet 2 (1)
    Down Violet 2 (2)
    Left/Up Left/Up 3 (2)
    Right/Down Right/Down 3 (1)
    (1) Voltage should be greater than 10 volts.
    (2) Resistance should be less than 5 ohms.
  2. Remove mirror control switch to access harness connector. See MIRROR CONTROL SWITCH  under REMOVAL & INSTALLATION. Do not disconnect switch connector. Backprobing connector, measure voltage or resistance between ground and specified terminal on mirror control switch connector while moving switch to specified position. See REAR VIEW MIRROR CONTROL CIRCUIT LOGIC TESTING  table. If all resistance and voltage measurements are as specified, repair suspect circuit found in step 1)  . If any resistance or voltage measurement is not as specified, replace suspect mirror control switch. See MIRROR CONTROL SWITCH  under REMOVAL & INSTALLATION.
    REAR VIEW MIRROR CONTROL CIRCUIT LOGIC TESTING (NON-HEATED)

    Switch Position Terminal No. Wire Color Result
    Left/Up 6 Yellow (2)
    Right/Down 6 Yellow (1)
    Driver's Side Selected
    Left 4 Red (1)
    Right 4 Red (2)
    Up 7 Dark Blue/Yellow (1)
    Down 7 Dark Blue/Yellow (2)
    Passenger's Side Selected
    Left 3 Dark Green (1)
    Right 3 Dark Green (2)
    Up 8 Violet (1)
    Down 8 Violet (2)
    (1) Voltage should be greater than 10 volts.
    (2) Resistance should be less than 5 ohms.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.