Other Means Of Identification
Refrigerant R-134a, when viewed through a sight glass, may
have a "milky" appearance due to the mixture of refrigerant and
lubricating oil. As the refrigerant and oil DO NOT exhibit a "clear"
sight glass on a properly charged A/C system, most R-134a systems have
no sight glass.
REFRIGERANT OILS
NOTE: Use ONLY the specified oil for the appropriate system or A/C
compressor. Always check vehicle underhood A/C specification
label or A/C compressor label before adding refrigerant oil
to A/C compressor/system. See Figs. 2 and 3. Always use
refrigerant oil specified on vehicle underhood A/C
specification label if different from the following list.
Refrigerant R-12 based systems use mineral oil, while R-134a
systems use Polyalkylene Glycol (PAG) oils. Using a mineral oil based
lubricant with R-134a will result in A/C compressor failure due to
lack of proper lubrication. The following R-134a refrigerant oils are
currently specified:
Use DENSO/ND-Oil 8 refrigerant oil on Nippondenso
compressors. Use SUN PAG 56 refrigerant oil on Sanden compressors.
NOTE: PAG oils absorb moisture very rapidly, 2.3-5.6 percent by
weight, as compared to a mineral oil absorption rate of
0.005 percent by weight.
SERVICE EQUIPMENT
A/C systems using R-134a refrigerant and PAG lubricants
cannot use R-12 refrigerant or mineral oil lubricants. R-134a
refrigerant is NOT compatible or interchangeable with R-12
refrigerant. Separate sets of hoses, manifold gauge sets and
recovery/recycling equipment are required to service the different
systems. This is necessary to avoid cross-contaminating and damaging
A/C system. A single set of A/C service equipment cannot be cleaned
thoroughly enough to be used with both types of refrigerant.
All equipment used to service A/C systems using R-134a must
be U.L. listed and certified to meet SAE standard J2210. The service
hoses on the manifold gauge set must have manual (turn wheel) or
automatic back-flow valves at the service port connector ends. This
will prevent refrigerant from being released into the atmosphere.
For identification purposes, R-134a service hoses must have a
Black stripe along its length and be clearly labeled SAE J2196/R-134a.
The low pressure test hose is Blue with a Black stripe. The high
pressure test hose is Red with a Black stripe, and the center test
hose is Yellow with a Black stripe.
R-134a manifold gauge sets can be identified by one or all of
the following: Labeled FOR USE WITH R-134a on set, labeled HFC-134a or
R-134a on gauge face, or by a Light Blue color on gauge face. In
addition, pressure/temperature scales on R-134a gauge sets are
different from R-12 manifold gauge sets.
SYSTEM SERVICE VALVES
SCHRADER-TYPE VALVES
NOTE: Although similar in construction and operation to a tire
valve, NEVER replace a Schrader-type valve with a tire valve.
* PLEASE READ THIS FIRST *
WARNING: To avoid injury from accidental air bag deployment, read and
carefully follow all SERVICE PRECAUTIONS and DISABLING &
ACTIVATING AIR BAG SYSTEM procedures in AIR BAG RESTRAINT
SYSTEM article.
CAUTION: When removing or installing floor console, DO NOT allow any
impact or shock to Supplemental Restraint System Electronic
Control Unit (SRS-ECU).
FRONT HEATER UNIT & HEATER CORE
Removal
1) Deactivate air bag system. See AIR BAG RESTRAINT SYSTEM
article. Remove front and rear floor consoles. Remove hood release
handle. Remove fuel door release handle. Remove knee protector and
support brackets. Remove speaker covers.
NOTE: On A/T models, when removing front floor console, set A/T
selector lever in "L" position.
2) Remove glove box door stop, glove box and glove box frame.
Remove passenger-side air bag module. Remove heater control panel
cover. Remove heater control panel and radio. Remove plug from
instrument cluster cover. Remove instrument cluster cover and
instrument cluster.
3) Remove steering column cover. Remove clock or plug. Remove
side defroster covers. Remove side mirror control switch. Remove front
speakers.
4) Remove rheostat, rear wiper/washer switch, and door lock
switch. Disconnect ventilation control cable and harness connector.
See Fig. 9. Remove instrument panel. See INSTRUMENT PANEL. Drain
coolant and disconnect heater hoses from heater unit.
5) Remove shower ducts, lap duct, joint duct and center duct.
See Fig. 1 . Remove center reinforcement. Remove heater unit. Remove
distribution duct. Remove heater core.
Installation
Install heater core, distribution duct, heater unit and
center reinforcement. Install remaining ducts in reverse order of
removal. Install instrument panel. Tighten steering column bolts to 16
ft. lbs. (22 N.m). Install and adjust ventilation control cable. See
ADJUSTMENTS . To complete installation, reverse removal procedure. Add
coolant and check for leaks.
INSTRUMENT PANEL
Removal & Installation
Remove instrument panel components and then instrument panel,
in order listed on appropriate illustration. See Fig. 9. To install,
reverse removal procedures.
Check continuity between specified terminals. See Figs. 31 and 33. If
continuity is not as specified, replace steering column combination
switch.
REMOVAL & INSTALLATION
* PLEASE READ THIS FIRST *
WARNING: Deactivate air bag system before performing any service
operation. See AIR BAG RESTRAINT SYSTEMS article. DO NOT
apply electrical power to any component on steering column
without first deactivating air bag system. Air bag may
deploy.
IGNITION SWITCH
Removal & Installation (Diamante)
Remove instrument panel lower cover. Remove upper and lower
steering column covers. See Fig. 1. Remove ignition switch. To
install, reverse removal procedure.
Removal & Installation (Eclipse)
1) Remove knee protector mount screw plugs. Remove knee
protector. Remove hood lock release handle. Remove upper and lower
steering column covers. See Fig. 6. Remove ignition key illumination
light.
2) Remove steering lock cylinder. Remove A/C-heater system
lap cooler and shower ducts. On A/T models, remove key interlock cable
and slide lever. On all models, remove ignition switch. To install,
reverse removal procedure.
Removal & Installation (Galant)
Remove knee protector. Remove upper and lower column covers.
See Fig. 11 . Remove ignition switch. To install, reverse removal
procedure.
Removal & Installation (Mirage)
Remove knee protector. Remove steering column cover. See
Fig. 15 . Remove clip and cover. On A/T models, remove key interlock
cable, spring and slide lever. On all models, remove ignition switch.
To install, reverse removal procedure.
Removal & Installation (Montero & Montero Sport)
Remove lower instrument panel cover. Remove upper and lower
column covers. See Fig. 19 or 25. Remove ignition switch. To install,
reverse removal procedure.
Removal & Installation (3000GT)
Remove knee protector. Remove upper and lower steering column
covers. See Fig. 31. Remove A/C-heater system lap cooler duct and foot
duct. Remove key reminder switch. Remove ignition switch. To install,
reverse removal procedure.
STEERING COLUMN SWITCH
CAUTION: DO NOT hammer on steering shaft. Collapsible steering column
mechanism may be damaged.
Removal & Installation (Diamante)
Remove air bag module. See AIR BAG RESTRAINT SYSTEMS article.
Remove steering wheel. Remove instrument panel lower cover. Remove
upper and lower steering column covers. See Fig. 1. Remove steering
column switch. To install, reverse removal procedure.
Removal & Installation (Eclipse)
Remove air bag module. See AIR BAG RESTRAINT SYSTEMS article.
Remove horn pad and steering wheel. Remove hood lock release handle.
Remove column pad and upper and lower column covers. See Fig. 6.
Remove A/C-heater system lap cooler duct and foot shower duct. Remove
steering column switch. To install, reverse removal procedure.
Removal & Installation (Galant)
Remove air bag module. See AIR BAG RESTRAINT SYSTEMS article.
Remove steering wheel. Remove column pad. Remove foot duct. Remove
upper and lower steering column covers. See Fig. 11. Remove steering
column switch. To install, reverse removal procedure.
Removal & Installation (Mirage)
Remove air bag module. See AIR BAG RESTRAINT SYSTEMS article.
Remove steering wheel. Remove hood release handle. Remove knee
protector. Remove upper and lower steering column covers. See Fig. 15.
Remove steering column switch. To install, reverse removal procedure.
Removal & Installation (Montero)
Remove air bag module. See AIR BAG RESTRAINT SYSTEMS article.
Remove steering wheel. Remove foot duct. Remove lower instrument panel
cover. Remove upper and lower steering column covers. See Fig. 19.
Remove steering column switch. To install, reverse removal procedure.
Removal & Installation (Montero Sport)
Remove air bag module. See AIR BAG RESTRAINT SYSTEMS article.
Remove steering wheel. Remove instrument panel lower cover. Remove
upper and lower steering column covers. See Fig. 25. Remove steering
column switch. To install, reverse removal procedure.
Removal & Installation (3000GT)
Remove air bag module. See AIR BAG RESTRAINT SYSTEMS article.
Remove steering wheel. Remove knee protector. Remove upper and lower
steering column covers. Remove A/C-heater system lap cooler duct and
foot duct. Remove left or right steering column switch. See Fig. 31.
To install, reverse removal procedure.
TORQUE SPECIFICATIONS
TORQUE SPECIFICATIONS TABLE \
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Application Ft. Lbs. (N.m)
Steering Wheel Nut
Diamante, Montero, Montero Sport
& 3000GT ...................................... 29 (39)
Eclipse, Galant & Mirage ....................... 30 (41)
INCH Lbs. (N.m)
Air Bag Module Bolts/Nuts
Diamante, Eclipse & Mirage .................... 53 (6.0)
Galant & Montero .............................. 80 (9.0)
Montero Sport ................................. 78 (8.8)
3000GT ....................................... 39 (4.4)
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WIRING DIAGRAMS