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Troubleshooting
Blower Motor Speed
Recirculation
indicator
light indicates Diagnostic Trouble Code (DTC)
2:
A problem in the blower motor circuit.
The
speed of
the blower motor is controlled
by signals sent from the
heater
control panel.
Blower motor only runs on high
speed position; it do •• not run in
any other speed positions.
Self-diagnosis circuit check indi-
cates a
problem in
the blower
motor
circuit.
Cheek for an open in the wire:
1. Disconnect
the
power
transis-
tor
3P
connector.
2. Check
for
continuity
between
the No.3
terminal and
body
ground.
"
Is there
continuity?
/
YES
Check for an open
in
the
wire:
1.
Connect
the No. 1
and
No.
3
terminals of the
power tran-
sistor
3P
connector with a
jumper
wire.
2.
Turn the ignition
switch
ON
(1).
Does
the blower motor
run
at
high speed?
YES
Check for an open In the wir.:
1.
Turn the ignition switch OFF.
2.
Disconnect the jumper
wire.
3
.
Remove
the heater control
panel (see page
22-46).
(
.
Check
for
continuity between
the No.
20
terminal
of
the
heater
control panel
20P
con-
nector and
the
No.2 terminal
of
the power
transistor
3P
connector.
"-
Is there
continuity?
./
I
YES
To page
22-15
22-14
NOTE:
If the
blower motor
does not
run
at all,
refer to page 22-16.
Check for
8n
open In the wire
NO
between the power transistor
and body ground. If the wire is
OK. check for poor ground at
G401 and G402.
NO
Repair open in the wire between
the power transistor and the
blower
motor.
NO
Repair open in the wlra between
tha power transistor and the
heat.r controt pan".
POWER TRANSISTOR 3P CONNECTOR
Wire
side of
female
terminals
JUMPER
~~U(---JWlRE
HEATER CONTROL PANEL 20P CONNECTOR
Wire side
of female
terminals
2
6
8
9
10
11
12
13 1. 15 16
11
18 19
20
LTGRN/IIU(
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Table of Contents
Troubleshooting
