Nissan Silvia. Manual — part 271
3
CHECK CIRCUIT CONTINUITY BETWEEN A/C CONTROL UNIT AND INTAKE DOOR MOTOR
Check circuit continuity between each A/C control unit connector M32 terminal No. 15 (G/B), 16 (G), 23 (G/W) , 24 (W/B)
and intake door motor connector M48 terminal No. 1 (G), 4 (W/B), 6 (G/W), 7 (G/B).
ZHA027H
Continuity should exist.
If OK, check harness for short.
OK or NG
OK
©
Replace intake door motor.
NG
©
Repair harness or connector.
ZHA023H
CONTROL LINKAGE ADJUSTMENT
NMHA0093
Intake Door Motor
NMHA0093S04
1.
Install intake door motor on blower and intake unit.
Ensure that the intake door motor lever is fitted into the slit
portion of intake door link.
2.
Connect the intake door motor harness connector.
3.
Turn ignition switch to ON.
4.
Check that intake door operates properly when RECIRCULA-
TION switch is turned ON and OFF.
GI
MA
EM
LC
EC
FE
CL
MT
AT
PD
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSES
Intake Door (Cont’d)
HA-35
Blower Motor
TROUBLE DIAGNOSIS PROCEDURE FOR BLOWER MOTOR
=NMHA0138
Symptom:
I
Blower motor does not rotate at all.
Inspection Flow
ZHA029H
*1: HA-38
*2: HA-28
*3: HA-27
TROUBLE DIAGNOSES
Blower Motor
HA-36
ZHA030H
ELECTRICAL COMPONENTS INSPECTION
=NMHA0139
Fan Switch
NMHA0139S01
Check continuity between terminals at each switch position.
SWITCH POSITION
Continuity between terminals
OFF
1
4 — 5 — 6
2
3 — 5 — 6
3
2 — 5 — 6
4
1 — 5 — 6
Blower Motor
NMHA0139S02
Confirm smooth rotation of the blower motor.
I
Ensure that there are no foreign particles inside the intake unit.
ZHA031H
Fan Resistor
NMHA0139S03
Check resistance between terminals.
Terminal No.
Resistance
(+)
(−)
2
1
Approx. 0.27 - 0.33
Ω
3
Approx. 0.855 - 1.045
Ω
4
Approx. 2.25 - 2.75
Ω
GI
MA
EM
LC
EC
FE
CL
MT
AT
PD
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSES
Blower Motor (Cont’d)
HA-37
DIAGNOSTIC PROCEDURE
=NMHA0089
SYMPTOM:
I
Blower motor does not rotate.
Test group No.
INCIDENT
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.
1
DIAGNOSTIC PROCEDURE
Check if blower motor rotates properly at each fan speed.
Conduct checks as per table above.
1
©
GO TO 2.
2, 3, 4
©
GO TO 8.
5
©
GO TO 9.
TROUBLE DIAGNOSES
Blower Motor (Cont’d)
HA-38
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