Infiniti G20 (P11). Manual — part 437
12
CHECK CIRCUIT CONTINUITY BETWEEN A/C RELAY AND ECM
Check circuit continuity between A/C relay harness terminal No. 2 and ECM harness terminal No. 23.
Continuity should exist.
RHA535H
If OK, check harness for short.
OK or NG
OK
©
Check ECM. Refer to EC-134, “ECM Terminals and Reference Value”.
NG
©
Repair harness or connector.
SEF090M
ELECTRICAL COMPONENT INSPECTION
NCHA0068
A/C Relay
NCHA0068S01
Check continuity between terminal Nos. 3 and 5.
Conditions
Continuity
12V direct current supply between terminal Nos. 1 and 2
Yes
No current supply
No
If NG, replace relay.
RHA526H
SHA315F
Refrigerant Pressure Sensor
NCHA0068S03
Make sure that higher A/C refrigerant pressure results in higher
refrigerant-pressure sensor output voltage.
Refer to EC-621, “Diagnostic Procedure”.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSES
AUTO
Magnet Clutch (Cont’d)
HA-79
Insufficient Cooling
TROUBLE DIAGNOSIS PROCEDURE FOR INSUFFICIENT COOLING
=NCHA0096
SYMPTOM:
I
Insufficient cooling
INSPECTION FLOW
SHA357F
*1: HA-32
*2: HA-56
*3: HA-83
*4: HA-40
*5: STEP-BY-STEP PROCEDURE
(HA-32), see No. 12.
*6: HA-50
*7: HA-60
*8: HA-67
*9: HA-74
*10: HA-81
*11: HA-42
*12: HA-32
*13: HA-3
*14: MA-13
TROUBLE DIAGNOSES
AUTO
Insufficient Cooling
HA-80
PERFORMANCE TEST DIAGNOSES
NCHA0030
SHA194F
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSES
AUTO
Insufficient Cooling (Cont’d)
HA-81
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