2003 NISSAN ALMERA N16 clutch

20 CHECK CAN COMMUNICATION
Check CAN communication. Refer to EL-509.
Combination meter - Smart entrance control unit
Combination meter - ECM
ECM - Smart entrance control unit
OK or NG
OK INSPECTION END
NG Repair or replace malfunctioning part(s).
MAGNET CLUTCH CIRCUIT (YD ENGINE WITHOUT
COMMON RAIL)
NJHA0203SYMPTOM:
Magnet clutch does not engage when A/C switch and fan
switch are ON.
1 CHECK POWER SUPPLY FOR COMPRESSOR
Disconnect compressor harness connector.
Do approx. 12 volts exist between compressor harness terminal No. 1 and body ground?
RHA794H
YesorNo
Ye s G O T O 2 .
No Disconnect A/C relay. GO TO 3.
2 CHECK MAGNET CLUTCH COIL
Check for operation sound when applying battery voltage direct current toterminal.
RHA256I
OK or NG
NG Replace magnet clutch. Refer to HA-84.
TROUBLE DIAGNOSESMANUAL
Magnet Clutch (Cont’d)
HA-60

3 CHECK CIRCUIT CONTINUITY BETWEEN A/C RELAY AND COMPRESSOR HARNESS
Check circuit continuity between A/C relay harness terminal No. 3 and compressor harness terminal No. 1.
RHA634H
Continuity should exist.
If OK, check harness for short.
OK or NG
OK GO TO 4.
NG Repair harness or connector.
4 CHECK POWER SUPPLY FOR A/C RELAY
Disconnect A/C relay.
Do approx. 12 volts exist between A/C relay harness terminal Nos. 1, 5 and body ground?
RHA635H
YesorNo
Ye s G O T O 5 .
No Check power supply circuit and 10A (No. 15) fuse at fuse block. Refer to EL-14, “Wiring
Diagram — POWER —”.
5 CHECK A/C RELAY AFTER DISCONNECTING IT
Refer to HA-65.
OK or NG
OK Reconnect A/C relay. GO TO 6.
NG Replace A/C relay.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSESMANUAL
Magnet Clutch (Cont’d)
HA-61

6 CHECK COIL SIDE CIRCUIT OF A/C RELAY
Do approx. 12 volts exist between ECM harness terminal No. 204 and body ground?
NHA517
YesorNo
Ye s G O T O 8 .
No Disconnect A/C relay. Disconnect ECM harness connector. GO TO 7.
7 CHECK CIRCUIT CONTINUITY BETWEEN A/C RELAY AND ECM HARNESS
Check circuit continuity between A/C relay harness terminal No. 2 and ECM harness terminal No. 204.
NHA518
Continuity should exist.
If OK, check harness for short.
OK or NG
OK Check ECM. Refer to EC-66 (YD), “ECM Terminals and Reference Value”.
NG Repair harness or connector.
8 CHECK VOLTAGE FOR ECM
Do approx. 12 volts exist between ECM harness terminal No. 403 and body ground?
NHA519
YesorNo
Ye s G O T O 9 .
No Check ECM. Refer to EC-66 (YD), “ECM Terminals and Reference Value”.
TROUBLE DIAGNOSESMANUAL
Magnet Clutch (Cont’d)
HA-62

9 CHECK POWER SUPPLY FOR DUAL-PRESSURE SWITCH
Do approx. 12 volts exist between dual-pressure switch harness terminal No. 2 and body ground?
RHA775H
YesorNo
Yes GO TO 10.
No Repair harness or connector.
10 CHECK DUAL-PRESSURE SWITCH
Refer to HA-65.
OK or NG
OK GO TO 11.
No Replace dual-pressure switch.
11 CHECK CIRCUIT CONTINUITY BETWEEN DUAL-PRESSURE SWITCH AND HEATER CONTROL PANEL
(A/C SWITCH)
Check circuit continuity between dual-pressure switch harness terminalNo. 1 and heater control panel harness terminal
No. 7.
RHA266I
Continuity should exist.
If OK, check harness for short.
OK or NG
OK GO TO 12.
NG Repair harness or connector.
12 CHECK A/C SWITCH
Refer to HA-65.
OK or NG
OK GO TO 13.
NG Replace A/C switch.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSESMANUAL
Magnet Clutch (Cont’d)
HA-63

13 CHECK HEATER CONTROL PANEL CIRCUIT
Check circuit continuity between heater control panel harness terminal No. 8 and No. 18.
RHA267I
Continuity should exist.
If OK, check harness for short.
OK or NG
OK GO TO 14.
NG Repair harness or connector.
14 CHECK FAN SWITCH
Refer to HA-51.
OK or NG
OK GO TO 15.
NG Replace fan switch.
15 CHECK BODY GROUND CIRCUIT
Check circuit continuity between heater control panel harness terminal No. 13 and body ground.
RHA778H
Continuity should exist.
If OK, check harness for short.
OK or NG
OK INSPECTION END.
NG Repair harness or connector.
TROUBLE DIAGNOSESMANUAL
Magnet Clutch (Cont’d)
HA-64

RHA638H
ELECTRICAL COMPONENT INSPECTIONNJHA0192A/C RelayNJHA0192S01Check 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.
RHA272I
SHA315FD
Refrigerant Pressure SensorNJHA0192S02Make sure that the A/C refrigerant pressure and the sensor output
voltage are within the specified range as shown in the A/C operat-
ing condition figure.
Check voltage between ECM harness terminal No. 69 and body
ground.
RHA282I
Dual-pressure SwitchNJHA0192S03
ON
kPa (bar, kg/cm2, psi)OFF
kPa (bar, kg/cm2, psi)
Low-pressure
sideIncreasing to 157 - 216 (1.57 -
2.16, 1.6 - 2.2, 23 - 31)Decreasing to 157 - 196 (1.57
- 1.96, 1.6 - 2.0, 23 - 28)
High-pressure
sideDecreasing to 1,863 - 2,256
(18.6 - 22.6, 19 - 23, 270 -
327)Increasing to 2,452 - 2,844
(24.5 - 28.4, 25 - 29, 356 -
412)
RHA268I
A/C SwitchNJHA0192S04Check continuity between terminals.
A/C switch Terminals Continuity
ON1-7
Ye s
1-8
OFF1-7
No
1-8
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSESMANUAL
Magnet Clutch (Cont’d)
HA-65

RJIA0834E
Compressor Clutch — CSV613 (CALSONIC
make)
OVERHAULNJHA0211
RHA805H
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
SERVICE PROCEDUREMANUAL
Compressor (Cont’d)
HA-83

RHA136E
REMOVALNJHA0212When removing center bolt, hold clutch disc with clutch disc
wrench.
RHA399FA
RHA124FA
Remove the clutch disc using the clutch disc puller.
Insert the holder’s three pins into the holes in the clutch disc.
Rotate the holder clockwise to hook it onto the plate. Then,
tighten the center bolt to remove the clutch disc.
After removing the clutch disc, remove the shims from either
the drive shaft or the clutch disc.
RHA138E
Remove the snap ring using external snap ring pliers.
RHA139E
Pulley removal
Position the center pulley puller on the end of the drive shaft,
and remove the pulley assembly using any commercially avail-
able pulley puller.
To prevent the pulley groove from being deformed, the
puller claws should be positioned onto the edge of the
pulley assembly.
SERVICE PROCEDUREMANUAL
Compressor Clutch — CSV613 (CALSONIC make) (Cont’d)
HA-84