Nissan Silvia. Manual — part 275
Insufficient Heating
TROUBLE DIAGNOSIS PROCEDURE FOR INSUFFICIENT HEATING
=NMHA0140
Symptom:
I
Insufficient Heating.
Inspection Flow
ZHA039H
GI
MA
EM
LC
EC
FE
CL
MT
AT
PD
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSES
Insufficient Heating
HA-51
Air Mix Door
TROUBLE DIAGNOSIS PROCEDURE FOR AIR MIX DOOR MOTOR
=NMHA0256
SYMPTOM:
I
Air mix door motor does not operate normally.
INSPECTION FLOW
ZHA040H
*1: HA-58
*2: HA-54
*3: HA-28
TROUBLE DIAGNOSES
Air Mix Door
HA-52
ZHA042H
CONTROL SYSTEM INPUT COMPONENT
NMHA0258
PBR
NMHA0258S01
Measure resistance between connector M27 terminal No. 2 and 3
at vehicle harness side.
ZHA041H
ZHA020H
PTC
NMHA0258S02
Check resistance between connector M35 terminal No. 21 and +
at each lever position.
Terminal No.
Lever position
Resistance
+
21
Full cold
Approx. 0 k
Ω
Full hot
Approx. 1 k
Ω
GI
MA
EM
LC
EC
FE
CL
MT
AT
PD
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSES
Air Mix Door (Cont’d)
HA-53
DIAGNOSTIC PROCEDURE
=NMHA0259
SYMPTOM:
I
Air mix door motor does not operate normally.
1
CHECK POWER SUPPLY FOR A/C CONTROL UNIT
Refer to “MAIN POWER SUPPLY AND GROUND CIRCUIT CHECK”, HA-31.
OK or NG
OK
©
GO TO 2.
NG
©
Repair or replace.
2
CHECK PBR
Refer to HA-53.
OK or NG
OK
©
GO TO 3.
NG
©
Replace air mix door motor.
3
CHECK PTC
Refer to HA-53.
OK or NG
OK
©
GO TO 4.
NG
©
Replace PTC.
4
CHECK POWER SUPPLY FOR PTC.
Are there approx. 12 volts between PTC harness connector M35 terminal No. + (L/OR) and body ground?
ZHA089H
Yes or No
Yes
©
Disconnect PTC connector. GO TO 5.
No
©
Check 10A (No. 19) fuse at fuse block. Refer to EL-8, “Wiring Diagram — POWER
—”.
TROUBLE DIAGNOSES
Air Mix Door (Cont’d)
HA-54
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст