Mirrors: Description and Operation

INTRODUCTION

Power Mirror Switch:

Power mirrors are controlled by a single switch located on the driver's door. The switch has a rocker buttons mark L (left) and R (right) for mirror selection and four buttons for mirror direction movement.

The motors which operate the mirrors are part of the mirror assembly and cannot be replaced separately.

The vehicle is equipped with an Ignition-Off Draw Fuse which is used when it is originally shipped from the factory. This fuse is located in the junction block and helps to prevent battery discharge during storage when disconnected.

This fuse is included in the power mirror circuity and should be checked if the mirrors are inoperative.

SYSTEM OPERATION
Heated Mirror
Heated mirrors are available with Power Mirrors and Hear Window Defogger only The heated mirror is controlled by the rear window defogger switch. Only time that the heated minor is on is when the rear window defogger is on. The mirror should become warm to the touch.

CIRCUIT OPERATION
Day/Night Mirror
Power for the automatic day/night mirror is supplied by circuit F20. This circuit is protected by a 15 Amp fuse located in the junction block. Power for the fuse is supplied on circuit A22.

Power is also supplied on circuit M1. This is the Ignition-Off Draw (IOD) circuit and protected by a 15 Amp fuse located in the junction block.

Ground for the mirror is provided on circuit Z1.

The mirror receives an input on circuit L1. This input is used to tell the mirror when the vehicle is placed in REVERSE. The L1 circuit is spliced in with the back-up lamps. Refer for back-up lamp operation.

Power Mirror
The power mirrors use a single switch located in the left door trim panel. The feed for the system is supplied from the 10 Amp Ignition-Off Draw (IOD) fuse located in the junction block cavity 5. This fuse also supplies power for the radio, interior lamps and other components. Grounding for the power mirrors, along with power door locks and A/C Heater control, is provided through the Z1 circuit, which attaches to the left side cowl.

Switch And Mirror Operation
The power mirror switch has a right and a left position. Moving the switch to either of these positions changes the voltage path internal to the switch (changes polarity at the motors).

When the switch is moved to the LEFT position and mirror movement UP is selected, voltage is supplied through the P93 circuit and the ground path is through circuit P90. When the DOWN movement is selected, the power and ground are reversed.

If a LEFT door mirror movement LEFT is selected, voltage is supplied through the P95 circuit and the ground is passed through circuit P91. When the left door mirror RIGHT movement is selected, the power and ground are reversed.

When the switch is moved to the RIGHT position and mirror movement UP is selected, voltage is supplied through the P92 circuit and the ground path is through circuit P90. When the DOWN movement is selected, the power and ground are reversed.

If a RIGHT door mirror movement LEFT is selected, voltage is supplied through the P94 circuit and the ground is passed through circuit P91. When the left door mirror RIGHT movement is selected, the power and ground are reversed.

Heater Operation
The mirrors are also equipped with heating elements. These elements are activated when the operator has turned ON the rear window defogger. Circuit C16 provides power for the heaters. The C15 circuit is the power supply for the rear window defogger grid.

The heated mirrors and rear window defogger switch are protected by a 10 Amp fuse located in the junction block cavity 15. Grounding for the mirror heaters is provided on the Z1 circuit and terminates at the left side cowl.