INCIDENTFlow chart
No.
1 Fan fails to rotate.
2 Fan does not rotate at 1-speed.
3 Fan does not rotate at 2-speed.
4 Fan does not rotate at 3-speed.
5 Fan does not rotate at 4-speed.
DIAGNOSTIC PROCEDURE
SYMPTOM: Blower motor does not rotate.
+Perform PRELIMINARY CHECK 1 before referring to the
following ¯ow chart.
Check if blower motor rotates properly
at each fan speed.
Conduct checks as per ¯ow chart at
left.
cjE
cjD
cjC
cjB
(Go to next page.)
CHECK POWER SUPPLY FOR BLOWER
MOTOR.
Disconnect blower motor harness connec-
tor.
Do approx. 12 volts exist between blower
motor harness terminal No.j
2and body
ground?
Ye s
cNo
Check 15A (No.and
No.) fuses at fuse
block.
(Refer to ``POWER SUP-
PLY ROUTING'' in EL sec-
tion and Wiring Diagram.)
1. Turn fan control knob to any position
except OFF.
2. Check circuit continuity between blower
motor harness terminal No.j
1and body
ground.
Continuity should exist.
OK
cNG
Reconnect blower motor
harness connector.
CHECK BLOWER MOTOR.
(Refer to Electrical Components Inspec-
tion.) (HA-31)
NG
Replace blower motor.
.
CHECK BLOWER MOTOR CIRCUIT
BETWEEN BLOWER MOTOR AND
RESISTOR.
Do approx. 12 volts exist between resistor
harness terminal No.j
4and body ground?
Ye s
cNo
Disconnect blower motor
and resistor harness con-
nectors.
Disconnect fan switch harness connector.Note
Check circuit continuity
between blower motor har-
ness terminal No.j
1and
resistor harness terminal
No.j
4.
Continuity should exist.
If OK, check harness for
short.
jA(Go to next page.)
Note:
If the result is NG or No after checking circuit continuity, repair harness or
connector.
RHA596G
RHA597G
RHA598G
RHA599G
.
.
.
.
..
.
TROUBLE DIAGNOSESMANUAL
Blower Motor (Cont'd)
HA-29
DIAGNOSTIC PROCEDURE
SYMPTOM: Intake door motor does not operate normally.
+Perform Self-diagnosis STEP 4 before referring to the ¯ow
chart.
CHECK POWER SUPPLY FOR INTAKE
DOOR MOTOR.
Disconnect intake door motor harness
connector.
Do approx. 12 volts exist between intake
door motor harness terminal No.j
1and
body ground?
Ye s
cNo
Check power supply circuit
and 10A fuse (No.
6,
located in the fuse block).
Note
CHECK FOR AUTO AMP. OUTPUT.
Set up Self-diagnosis STEP 4.
Measure voltage across auto amp. har-
ness terminals and body ground.
OK
cNG
Check circuit continuity
between each terminal on
auto amp. and on intake
door motor.
OK
Replace auto amp.
Replace intake door motor.
Note:If the result is NG or No after checking circuit continuity, repair harness or
connector.
Code No.Terminal No.
ConditionVoltage
VÅ@
j13
Body
groundREC0
j
2312
j
1412j1320%
FRE12
j230
j
1412j13
FRE12
j2312
j
140
0V: Approx. 0V
12V: Approx. 12V
Terminal No.
Continu-
ityÅ@
Auto amp.Intake door
motor
j
13j13
Ye s j23j23j14j14
SHA858EB
RHA081GB
RHA642G
RHA634G
.
.
.
TROUBLE DIAGNOSESAUTO
Intake Door Motor (Cont'd)
HA-85
