S10/T10 P/U 2WD V6-4.3L VIN W (1997)
Power Mirror Switch: Initial Inspection and Diagnostic Overview
Circuit Operation
Voltage is supplied to the Outside Remote Control Rear View Mirror Switch at all times through the CTSY Fuse and the ORN (40) wire. Ground is
provided through the BLK (150) wire and Ground G102, G104, G113, G115 or G116.
Rotating the Outside Remote Control Rear View Mirror Switch fully clockwise allows for control of the RH Outside Remote Control Rear View Mirror.
Rotating the switch fully counterclockwise allows for control of the LH Outside Remote Control Rear View Mirror.
With the switch set for the LH Outside Remote Control Rear View Mirror, moving the switch handle to the left connects the ORN (40) wire and the LT
BLU (82) wire to the YEL (1496) wire and the BLK (150) wire, and the mirror will then move to the left. Moving the switch handle to the right reverses
polarity to the motor, and the mirror moves to the right.
Moving the switch handle up connects the LT BLU (82) wire to the ORN (40) wire and the YEL (1496) wire to the BLK (150) wire, and the mirror will
then move up. Moving the switch handle down reverses polarity to the mirror motor and the mirror moves down.
Troubleshooting Hints
1. Check condition of CTSY Fuse. If fuse is open, locate and repair source of overload. Replace fuse.
2. Check the CTSY Fuse for battery voltage. If it does not have battery voltage, refer to Power and Ground Distribution. See: Power and Ground
Distribution
3. If fuse is not open, proceed with diagnostics.
