LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 2000 >> Taurus SEL >> Repair and Diagnosis >> Body & Frame >> Mirrors >> Power Mirror System >> System Tests >> Test C: Single Mirror Does Not Operate With Switch Logic
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Test C: Single Mirror Does Not Operate With Switch Logic

  1. Turn ignition switch to LOCK position. Remove appropriate door trim panel. Disconnect malfunctioning outside mirror harness connector. Inspect wiring. Measure voltage or resistance between ground and inoperative mirror harness connector terminals while operating mirror control switch to appropriate position as specified. See MIRROR LOGIC VOLTAGE/RESISTANCE TEST  table. See Figure . If voltage/resistance readings are not as specified, go to next step. If voltage/resistance readings are as specified, replace appropriate outside mirror.
    MIRROR LOGIC VOLTAGE/RESISTANCE TEST

    Mirror Connector Terminal No. (Wire Color) Control Switch Position Measurement
    Driver's Side Mirror
    5 (Yellow) Left/Up Less Than 5 Ohms
    5 (Yellow) Right/Down Greater Than 10 Volts
    6 (Dark Blue) Up Greater Than 10 Volts
    6 (Dark Blue) Down Less Than 5 Ohms
    7 (Red) Left Greater Than 10 Volts
    7 (Red) Right Less Than 5 Ohms
    Passenger's Side Mirror
    5 (Yellow) Left/Up Less Than 5 Ohms
    5 (Yellow) Right/Down Greater Than 10 Volts
    6 (Violet) Up Greater Than 10 Volts
    6 (Violet) Down Less Than 5 Ohms
    7 (White) Left Greater Than 10 Volts
    7 (White) Right Less Than 5 Ohms
  2. Remove mirror control switch leaving harness connected. Using a DVOM, backprobe mirror control switch harness connector C527 at specified terminal at while operating switch in specified position. See CONTROL SWITCH LOGIC VOLTAGE TEST  table. See Figure . If voltage/resistance readings are as specified, repair appropriate wires. If voltage/resistance readings are not as specified, replace mirror control switch.
    CONTROL SWITCH LOGIC VOLTAGE TEST

    Terminal No. (Wire Color) Control Switch Position Measurement
    6 (Yellow) Left/Up Less Than 5 Ohms
    6 (Yellow) Right/Down Greater Than 10 Volts
    Driver's Side
    3 (Dark Blue) Up Greater Than 10 Volts
    3 (Dark Blue) Down Less Than 5 Ohms
    4 (Red) Left Greater Than 10 Volts
    4 (Red) Right Less Than 5 Ohms
    Passenger's Side
    2 (Violet) Up Greater Than 10 Volts
    2 (Violet) Down Less Than 5 Ohms
    5 (White) Left Greater Than 10 Volts
    5 (White) Right Less Than 5 Ohms