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Home >> Ford >> 1992 >> Escort Base, Standard >> Repair and Diagnosis >> Body & Frame >> Sun Roof/T-Top/Convertible Top >> Power Sun Roofs >> System Tests >> Pinpoint Test B

Pinpoint Test B

  1. Locate the moon roof switch. Measure the resistance of the Black wire at the moon roof switch and ground. Is the resistance less than 5 ohms? If yes, go to next step. If no, repair the ground circuit (Black Wire).
  2. Disconnect the moon roof switch connectors. Verify switch position resistances. See SWITCH POSITION RESISTANCE .
SWITCH POSITION RESISTANCE

Switch Position Resistance Between "BK" Wire And: Resistance
Open BL < 5 Ohms
Close BL/W < 5 Ohms
Up BL/Y < 5 Ohms
Down BL/GN < 5 Ohms

Is the moon roof switch operating correctly? If yes, go to PINPOINT TEST C . If no, repair or replace the moon roof switch. See MOON ROOF SWITCHES  under REMOVAL & INSTALLATION.