Replacement - Honda Acura NSX 1991 Service Manual

Heater-Evaporator Unit
SRS wire harness is routed near the heater.
All SRS wire harnesses and connectors are
colored yellow. Do not use electrical test equipment on
these circuits.
CAUTION: Be careful not to damage the SRS wire
harnesses when servicing
Remove the blower (page 22-63).
1 .
2. When the engine is cool, drain the coolant from the
radiator (Section IO).
Do not remove the radiator cap when the engine is
hot; the coolant is under pressure and could severe-
ly scald you.
Keep hands away from the radiator fan. The fan
may start automatically without warning and run
for up to 30 minutes, even after the engine is turn-
ed off.
CAUTION: Radiator coolant will damage paint.
Quickly rinse any spilled coolant off painted
surfaces.
3. Disconnect the heater hoses at the heater. Coolant
will run out when the hoses are disconnected, drain
it into a clean drip pan.
Disconnect the heater valve cable from the heater
4.
valve.
the heater.
VALVE CABLE
5. Remove all refrigerant from the A/C system with a
refrigerant recovery system. (page 22-93).
6. Disconnect the receiver line and the suction line from
the evaporator.
Cap the open fittings immediately to keep moisture
out of the system.
RECEIVER PIPE
7. Remove the dashboard (Section 20).
8. Remove the heater duct.
9. Remove the mounting bolts{41 and disconnect the
connectors from control units and evaporator tem-
perature sensor connector from the control unit
bracket, then remove the control unit bracket.
EVAPORATOR
TEMPERATURE
10. Remove the enclosure woofer.
SUCTION PIPE
.