Ford Corsar Repair Manual page 804

TROUBLE DIAGNOSES
Trouble-shooting (Cont'd)
Mote:
If the result is N.G. after checking circuit continuity, repair harness or
connector.
Flowchart
No.
7
r
l 2
-
3!
L ! ! ,
r-
5
INCIDENT
TROUBLE-SHOOTING PROCEDURE 1
INCIDENT: Blower motor does not rotate.
Perform preliminary check before referring to the following
flowchart.
Check if blower motor rotates
properly at each fan speed.
Conduct check a s per flowchart
1
Fan falls to rotate.
Fan does not rotate at
I
speed.
Fan does not rotate at
2-speed.
Fan does not rotate at
3-speed.
Fan does not rotate at
4-speed.
2 A Q x r F
at left.
B
r
E
-
Check power supply for blower
motor.
B
voltmeter
Blower motor
connector
@
RHA30,A
El
ground.
Ohmmeter 0 . K .
Blower motor
connector
@
Continuity
exists O.K.
v
B
Check blower motor circuit be-
Disconnect blower motor and
R H A 3 1 0 A
tween blower motor and
resistor harness connectors.
resistor.
Do approx. 12 volts exist be-
tween resistor harness terminal
No.
@
and body ground?
tween blower motor harness
terminal No.
@
and resistor
O.K.
harness terminal No.
@ .
@ G @ @
Disconnect blower motor
harness connector.
Do approx. 12 volts exist be-
tween blower motor harness
terminal No.
@
and body
ground? (Refer to Preliminary Check.)
B O.K.
Check circuit continuity be-
tween blower motor harness
terminal No.
@
and body
5
Reconnect blower motor harness
'
connector.