Operation CHARM: Car repair manuals for everyone.

Models Without Power Door Locks

If not equipped with power door locks, the rear defogger system is controlled by the rear window defogger timer. The rear window defogger operates for approximately 15 minutes.
Power is supplied at all times:
^ through 20 A fuse (No. (4), located in the fuse block [J/B])
^ to rear window defogger relay terminal (6) and
^ through 20 A fuse (No. (5), located in the fuse block [J/B])
^ to rear window defogger relay terminal (3)
With the ignition switch in the ON or START position, power is supplied:
^ through 10 A fuse (No. (8), located in the fuse block [J/B])
^ to rear window defogger relay terminal (1) and
^ to rear window defogger timer terminal (1).
Ground is supplied to terminal (4) of the rear window defogger timer through body grounds (M2) and (M61).
Ground is also supplied to terminal (2) of the rear window defogger switch through body grounds (M2) and (M61).
When the rear window defogger switch is turned ON, ground is supplied:
^ through terminal (1) of the rear window defogger switch
^ to rear window defogger timer terminal (3).
Terminal (2) of the rear window defogger timer then supplies ground to the rear window defogger relay terminal (2).
With power and ground supplied, the rear window defogger relay is energized.
Power is supplied:
^ through terminals (5) and (7) of the rear window defogger relay
^ to condenser terminal (+)
^ through condenser terminal (-)
^ to the rear window defogger terminal (+).
Ground is also supplied to terminal (-) of the rear window defogger through body grounds (B105).
With power and ground supplied, the rear window defogger filaments heat and defog the rear window.
When the system is activated, the rear window defogger indicator illuminates in the rear window defogger switch.
Power is supplied:
^ to terminal (3) of the rear window defogger switch
^ from terminal (5) and (7) of the rear window defogger relay.
Terminal (4) of the rear window defogger switch is grounded through body grounds (M2) and (M61).