Power Transistor Test; Heater Control Panel And Push Switch Assembly Removal And Installation - Honda Civic 2002-2003 Service Manual

Heating and Air Conditioning
Power Transistor Test
1. Disconnect the 4P connector from the power
transistor.
2. Measure the resistance between the No.1 and
No.2 terminals of the power transistor. It should be
about1.4-1.5kQ.
• If the resistance is within the specifications, go to
step 3.
If the resistance is not within the specifications,
replace the power transistor.
POWER TRANSISTOR
2
3 4
"--_--{Q)--_---.J
3. Carefully release the lock tab on the No.4 terminal
(BLU/yEU (A) in the 4P connector, then remove the
terminal and insulate
it
from body ground.
JUMPER WIRE
(To 12 V power source on vehicle)
4. Reconnect the 4P connector to the power transistor.
5. Supply 12 volts to the No.4 cavity with a jumper
wire.
6. Turn the ignition switch ON (II), and check that the
blower motor runs.
Ifthe blower motor does not run, replace the
power transistor.
If the blower motor runs, the power transistor is
OK.
21-38
Heater Control Panel and Push
Switch Assembly Removal and
Installation
1. Remove the center panel (see page 20-62).
2. Remove the dials (A), then remove the self-tapping
screws and the heater control panel IB) from the
center panel IC). Remove the self-tapping screws
and the push switch assembly (D) from the center
panel.
3. Install the control panel and push switch assembly
in the reverse order of removal. After installation,
operate the control panel controls to see whether
it
works properly.
4. Run the self-diagnosis function to confirm that
there are no problems in the system (see page 21-
8).