Honda Civic 2002-2003 Service Manual page 792

12. Disconnect heater control panel connector A (14P).
13. Check for continuity between the NO.7 and No.8
terminals of heater control panel connector A (14P)
and body ground individually.
HEATER CONTROL PANEL CONNECTOR A {14PI
Wire side of female terminals
Is there continuity?
YES-Repair any short to body ground in the
wire(s) between the heater control panel and the
power transistor .•
NO-Go to step 14.
14. Check for continuity between the following
terminals of heater control panel connector A (14P)
and power transistor 4P connector.
14P: 4P:
No.7 No.4
No.8 No.2
HEATER CONTROL PANEL CONNECTOR A (14PI
Wire side of female terminals
3 4
L -_ _ _
~ BLU/VEL
POWER TRANSISTOR 4P CONNECTOR
Wire side of female terminals
Is there continuity?
YES-Go to step 15.
NO-Repair any open in the wire(s) between the
heater control panel and the power transistor .•
15. Reconnect heater control panel connector A (14P).
16. Test the power transistor (see page 21-38).
Is the power transistor OK?
YES-Check for loose wires or poor connections at
heater control panel connector A (14P) and at the
power transistor 4P connector. If the connections
are good, substitute a known·good heater control
panel, and recheck. If the symptom/indication goes
away, replace the original heater control panel..
NO-Replace the powertransistor .•
17. Disconnectthe jumper wire.
18. Disconnect the blower motor 2P connector.
19. Measure the voltage between the No.1 terminal of
the blower motor 2P connector and body ground.
BLOWER MOTOR 2P CONNECTOR
BLU/WHT
2
=
Wire side of female terminals
Is there battery voltage?
YES-Replace the blower motor..
NO-Go to step 20.
20. Turn the ignition switch OFF.
21. Remove the blower motor relay from the under-
hood fuse/relay box, and test it (see page 22-51).
Is the relay OK?
YES-Go to step 22.
NO- Replace the blower motor relay .•
(conl'd)
21-21