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AUTOMATIC AIR CONDITIONING SYSTEM
IT12o0I 4-7
M : MODE 12 - Mode door target value (MODE set) -
CONDITION :
Start engine .
Press VENT switch .
" Press DEF switch .
Probable cause (item outside "specified date")
Check actual mode door "F13" and outlet positions .
SPECIFICATION DATA :
" MODE set : 100% (mode door in VENT)
" MODE set : 0% (mode door in DEF)
(Reference
0 Check to determine mode door target value in relation
to actual mode door position using mode function
"F13" . If target value is outside specification data, auto
amplifier may be faulty .
N : MODE 13 - Actual mode door position (MODE pot) -
CONDITION :
Start engine.
Press VENT switch.
" Press DEF switch .
Probable cause (item outside "specified date")
I 1
I Check as per trouble codes 32 and 34 .
I
OK
I Check and repair mode door motor linkage .
I
SPECIFICATION DATA :
" MODE pot : 100% (mode door in VENT)
" MODE pot : 0% (mode door in DEF)
Repair harness/connector or replace mode door mo-
tor .
O: MODE 14 - Blower motor level (BLW) -
CONDITION :
SPECIFICATION DATA :
" Engine warmed up sufficiently
0 BLW : 4.0 V (FAN switch in LO)
" While A/C system is in AUTO mode, manually change
* BLW : 7.5 V (FAN switch in ME)
blower fan speed from LO to ME and then to HI using
a BLW : 12 .5 V (FAN switch in HI)
FAN switch.
Probable cause (item outside "specified date")
1
Measure voltage between blower motor termi-
nals at blower motor .
LO : approx . 4 V
ME : approx . 7.5 V
HI : approx . 12 V
OK
Faulty auto amplifier or control panel switch
See "Blower Motor Diagnosis" under "Troubleshoot-
ing Guide by Fault" .
137
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Troubleshooting
