Power Transistor - Honda CR-V 1997 Service Manual

Evaporator Temperature
Sensor
Test
Dip the sensor in ice water, and measure the resistance
with
a
digital multi meter. Then pour hot water on the
sensor, and check for change in resistance.
Compare the resistance reading between the No. 1 and
No.2 terminals of the evaporator temperature sensor
with the specifications shown in the following graph;
resistance should be within the specifications.
EVAPORATOR TEMPERATURE SENSOR
Terminal side of male terminals
RESISTANCE
kll
22-44
40
30
20
10
I~
~
50
10
.....
68
20
--
86°F
30°C
Power Transistor
Test
1. Disconnect the 3P connector from the power tran-
sistor.
2. Carefully release the lock tab on the No.2 terminal in
the 3P connector, then remove the terminal and insu-
late it from body ground.
12Vl.2-3.4W
BULB
'I '/
I \//(
I,
T
IIM
\
'
,
I
~
,
,
\,
)
No.
I
IBLU/BLKI
f
)
3. Connect a 1.2 - 3.4 W bulb between the No.1 and
the No.2 cavity on the 3P connector.
4. Reconnect the 3P connector to the power transistor.
5. Turn the ignition switch ON
(II),
and check that the
blower motor runs.
• If the blower motor runs at half speed the power
transistor is OK, replace the heater control panel.
• If the blower motor does not run at half speed,
replace the power transistor.