Heater Unit/Core Replacement - Honda Civic 2002-2003 Service Manual

Heater Unit/Core Replacement
SRS components are located in this area. Review the
SRS component locations (see page 23-13), and
precautions and procedures (see page 23-14) in the SRS
section before performing repairs or service.
1. Make sure you have the anti-theft code for the radio,
then write down the frequencies for the radio's
preset buttons.
2. Disconnect the negative cable from the battery.
3. Disconnect the suction and receiver lines from the
evaporator core (see page 21-42).
4. From under the hood, open the cable clamp (AI,
then disconnect the heater valve cable (B) from the
heater valve arm (C). Turn the heater valve arm to
the fully opened position as shown.
B
c
.-.
/:;~~<'"
~J ,r-\I
,i,:
-"
',,;'\."-------
' " ' . -
-'"~ ~-=,<"
5. When the engine is cool, drain the engine coolant
from the radiator (see page 10-6).
6. Slide the hose clamps (A) back, then disconnect the
inlet heater hose (B) and the outlet heater hose (C)
from the heater core. Engine coolant will run out
when the hoses are disconnected; drain it into a
clean drip pan. Be sure not to let coolant spill on
the electrical parts or the painted surfaces. If any
coolant spills, rinse it off immediately.
7. Remove the bolt and the heater valve, then remove
the mounting nut from the heater unit. Take care
not to damage or bend the fuel lines and the brake
lines, etc.
----------
~
8 x
1.25
mm
12 N·m 11.2 kgf·m, 8.7Ibf·ft)
(cont'd)
21-43