Honda Prelude 1993 Service Manual page 1305

Rear Window Defogger
Component Location Index
CAUTION:
a All SRS electdcal wi ng hahosses ale covared with
yellow outor insulation.
a Beforo disconnecttng the SBS wile harne$, install
the short connactor on tha airbag(3), then discon-
nect the wiro hamess (se€ page 23-294).
a Replaco th6 entira aft6ct€d SRS harness assembly il
k has an open circuii 01 damagod wi ng.
I
sRs
MAII{ HAR]TESS
REAR WINDOW
DEFOGGER SWITCH
Test, page 23-230
Replacement,
23-230
UNDER-DASH FUSE/RELAY BOX
wftDow
DEFOGGER RELAY
(A-Typ6l
Test, psge 23-7'l
REAR OEFOGGER
Function Test, page 23-231
DEFOGGER CIRCUIT
{ln the integrated control unit}
fnput Test, pago 23'170
The rear window defogger is controlled by the integrated control unit. When the defogger switch in th€ heater control
panel is pushed, it sends a signal to the defogger timer in the integrated control unit and the defogger stays on for about
25 minutes, or until the ignition is switched off.
The indicator light in the switch comes on when the defogger is ON.