Infiniti G20 (P11). Manual — part 462
![](/vehicles/zatt/wheiso/zix/lld.png)
12
CHECK THERMO CONTROL AMP. OPERATION
Reconnect thermo control amp. harness connector.
Does magnet clutch engage when short circuit between thermo control amp. harness terminal No. 2 and body ground?
RHA133H
Yes or No
Yes
©
GO TO 13.
No
©
Repair thermo control amp.
13
CHECK CIRCUIT CONTINUITY BETWEEN THERMO CONTROL AMP. AND PUSH CONTROL UNIT
Reconnect push control unit harness connector.
Check circuit continuity between thermo control amp. harness terminal No. 2 and push control unit harness terminal No.
20.
Continuity should exist.
RHA134H
If OK, check harness for short.
OK or NG
OK
©
GO TO 14.
NG
©
Repair harness or connector.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSES
MANUAL
Magnet Clutch (Cont’d)
HA-179
![](/vehicles/zatt/wheiso/zix/xthid.png)
14
CHECK FAN SWITCH
Reconnect fan switch harness connector.
Do approx. 12 volts exist between fan switch harness terminal No. 6 and body ground?
RHA588FA
Yes or No
Yes
©
Replace fan switch.
No
©
GO TO 15.
15
CHECK CIRCUIT CONTINUITY BETWEEN FAN SWITCH AND PUSH CONTROL UNIT
Reconnect push control unit harness connector.
Check circuit continuity between fan switch harness terminal No. 5 and push control unit harness terminal No. 19.
Continuity should exist.
SHA367F
If OK, check harness for short.
OK or NG
OK
©
Replace push control unit.
NG
©
Repair harness or connector.
SEF090M
ELECTRICAL COMPONENT INSPECTION
NCHA0192
A/C Relay
NCHA0192S01
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.
TROUBLE DIAGNOSES
MANUAL
Magnet Clutch (Cont’d)
HA-180
![](/vehicles/zatt/wheiso/zix/alithe.png)
RHA526H
SHA315F
Refrigerant Pressure Sensor
NCHA0192S02
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
MANUAL
Magnet Clutch (Cont’d)
HA-181
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