clutch NISSAN PATROL 2004 Electronic User Guide

Magnet Clutch
TROUBLE DIAGNOSIS PROCEDURE FOR MAGNET CLUTCH
SYMPTOM:
+Magnet clutch does not engage.
Inspection ¯ow
*1: HA-4027
*2: HA-4027 see STEP 2
*3: HA-4027 see STEP 4
*4: HA-4040: TB48 engine
HA-4043: TB45 engine
HA-4046: TD engine
HA-4049: ZD engine*5: HA-125 in Y61 SERVICE MANUAL,
publication No. SM7E-2Y61G1
*6: HA-132 in Y61 SERVICE MANUAL,
publication No. SM7E-2Y61G1
*7: HA-4032
*8: HA-91 in Y61 SERVICE MANUAL,
publication No. SM7E-2Y61G1*9: HA-43 in Y61 SERVICE MANUAL,
publication No. SM7E-2Y61G1
RHA384I
TROUBLE DIAGNOSESAUTO
HA-4039

DIAGNOSTIC PROCEDURE (TB48 ENGINE EXCEPT
FOR THE MIDDLE EAST)
SYMPTOM: Magnet clutch does not engage when A/C switch
and fan control dial are ON.
CHECK INTAKE SENSOR CIRCUIT.
Refer to self-diagnosis (HA-4027) and
intake sensor circuit (HA-132 in Y61 SER-
VICE MANUAL, publication No. SM7E-
2Y61G1.)
CHECK POWER SUPPLY FOR COM-
PRESSOR.
Disconnect compressor harness connector.
Do approx. 12 volts exist between compres-
sor harness connector terminal No.j
1and
ground?
No
cYe s
Check magnet clutch coil.
NG
Replace magnet clutch.
Refer to HA-178 in Y61
SERVICE MANUAL (publi-
cation No. SM7E-2Y61G1).
Disconnect A/C relay.
Note
CHECK CIRCUIT CONTINUITY
BETWEEN A/C RELAY HARNESS CON-
NECTOR TERMINAL NO.j
3AND COM-
PRESSOR HARNESS CONNECTOR TER-
MINAL NO.j
1.
Continuity should exist.
If OK, check harness for short.
OK
CHECK POWER SUPPLY FOR A/C
RELAY.
Disconnect A/C relay.
Do approx. 12 volts exist between A/C
relay harness connector terminal Nos.j
1,
j5and ground?
Ye s
cNo
Check power supply circuit
and 10A or 20A (No.
)
located in the fuse block
(J/B).
Refer to EL section (ªWiring
Diagramº, ªPOWER SUP-
PLY ROUTINGº).
CHECK A/C RELAY AFTER DISCON-
NECTING IT.
Refer to HA-41 in Y61 SERVICE MANUAL,
publication No. SM1E-Y61EG1.
OK
cNG
Replace A/C relay.
jA(Go to next page.)
Note:
If the result is NG or No after checking circuit continuity, repair harness or
connector.
RHA385I
SHA579F
SHA580FC
SHA581F
.
.
.
.
.
.
.
TROUBLE DIAGNOSESAUTO
Magnet Clutch (Cont'd)
HA-4040

jA
Reconnect A/C relay.
CHECK COIL SIDE CIRCUIT OF A/C
RELAY.
Do approx. 12 volts exist between ECM
harness connector terminal No.j
24and
ground?
Ye s
Ye s
cNo
Disconnect A/C relay.
Disconnect ECM harness
connector.
jB
(Go to next page.)
Note
CHECK CIRCUIT CONTI-
NUITY BETWEEN A/C
RELAY HARNESS CON-
NECTOR TERMINAL NO.
j
2AND ECM HARNESS
CONNECTOR TERMINAL
NO.j
24.
Continuity should exist.
If OK, check harness for
short.
M/T models A/T models
CHECK VOLTAGE FOR ECM.
Do approx. 12 volts exist between ECM
harness connector terminal No.j
86and
ground?
Ye s
cNo
CHECK ECM. Refer to EC
section.
Disconnect ECM harness connector.
Disconnect auto amp. harness connector.
Note
CHECK CIRCUIT CONTINUITY
BETWEEN ECM HARNESS CONNEC-
TOR TERMINAL NO.j
86AND AUTO AMP.
HARNESS CONNECTOR TERMINAL NO.
j
4.
Continuity should exist.
If OK, check harness for short.
OK
CHECK REFRIGERANT PRESSURE
SENSOR.
Refer to EC-498 (publication No.
SM2E-Y61FG1).
OK
cNG
Replace refrigerant pres-
sure sensor.
Replace auto amp.
Note:
If the result is NG or No after checking circuit continuity, repair harness
or connector.
SHA582FB
SHA583F
SHA584FB
RHA386I
.
.
.
.
.
.
.
.
.
TROUBLE DIAGNOSESAUTO
Magnet Clutch (Cont'd)
HA-4041

jB
Note
CHECK VOLTAGE FOR COMBINATION
METER. (COMPRESSOR ON SIGNAL)
Do approx. 12V exist between combina-
tion meter harness connector terminal No.
j
42and ground?
Ye s
cNo
CHECK CIRCUIT CONTI-
NUITY BETWEEN COMBI-
NATION METER HAR-
NESS CONNECTOR TER-
MINAL NO.j
42AND ECM
HARNESS CONNECTOR
TERMINAL NO.j
86.
Continuity should exist.
If OK, check harness for
short.
OK
Replace ECM.
CHECK VOLTAGE FOR COMBINATION
METER. (FAN ON SIGNAL)
Do approx. 12V exist between combina-
tion meter harness connector terminal No.
j
43and ground?
Ye s
cNo
Replace combination
meter.
Disconnect combination meter and auto
amp. harness connector.
Note
CHECK CIRCUIT CONTINUITY
BETWEEN COMBINATION METER HAR-
NESS CONNECTOR TERMINAL NO.j
43
AND AUTO AMP. HARNESS CONNEC-
TOR TERMINAL NO.j
19.
Continuity should exist.
If OK, check harness for short.
OK
CHECK REFRIGERANT PRESSURE
SENSOR.
Refer to EC-498 (publication No. SM2E-
Y61FG1).
OK
cNG
Replace refrigerant pres-
sure sensor.
Replace auto amp.
Note:
If the result is NG or No after checking circuit continuity, repair harness
or connector.
SHA693FA
SHA694F
RHA387I
SHA697F
.
.
.
.
.
.
.
TROUBLE DIAGNOSESAUTO
Magnet Clutch (Cont'd)
HA-4042

DIAGNOSTIC PROCEDURE (MODELS WITH TB45
ENGINE)
SYMPTOM: Magnet clutch does not engage when A/C switch
and fan control dial are ON.
CHECK POWER SUPPLY FOR COM-
PRESSOR.
Disconnect compressor harness connector.
Do approx. 12 volts exist between compres-
sor harness connector terminal No.j
1and
ground?
No
cYe s
Check magnet clutch coil.
NG
Replace magnet clutch.
Refer to HA-178 in Y61
SERVICE MANUAL, publi-
cation No. SM7E-2Y61G1.
Disconnect A/C relay.
Note
CHECK CIRCUIT CONTINUITY
BETWEEN A/C RELAY HARNESS CON-
NECTOR TERMINAL NO.j
3AND COM-
PRESSOR HARNESS CONNECTOR TER-
MINAL NO.j
1.
Continuity should exist.
If OK, check harness for short.
OK
CHECK POWER SUPPLY FOR A/C
RELAY.
Disconnect A/C relay.
Do approx. 12 volts exist between A/C
relay harness connector terminal Nos.j
1,
j5and ground?
Ye s
cNo
Check power supply circuit
and 10A or 20A (No.
)
located in the fuse block
(J/B).
Refer to EL section (ªWiring
Diagramº, ªPOWER SUP-
PLY ROUTINGº).
CHECK A/C RELAY AFTER DISCON-
NECTING IT.
Refer to HA-22 in Y61 SERVICE MANUAL,
publication No. SM1E-Y61EG1.
OK
cNG
Replace A/C relay.
jA(Go to next page.)
Note:
If the result is NG or No after checking circuit continuity, repair harness or
connector.
RHA388I
RHA096GG
SHA580FA
SHA581F
.
.
.
.
.
.
TROUBLE DIAGNOSESAUTO
Magnet Clutch (Cont'd)
HA-4043

jA
Reconnect A/C relay.
CHECK COIL SIDE CIRCUIT OF A/C
RELAY.
Do approx. 12 volts exist between ECM
harness connector terminal No.j
9and
ground?
Ye s
cNo
Disconnect A/C relay.
Disconnect ECM harness
connector.
Note
CHECK CIRCUIT CONTI-
NUITY BETWEEN A/C
RELAY HARNESS CON-
NECTOR TERMINAL NO.
j
2AND ECM HARNESS
CONNECTOR TERMINAL
NO.j
9.
Continuity should exist.
If OK, check harness for
short.
CHECK VOLTAGE FOR ECM.
Do approx. 12 volts exist between ECM
harness connector terminal No.j
46and
ground?
Ye s
cNo
CHECK ECM. Refer to EC
section.
Disconnect ECM harness connector.
Disconnect dual-pressure switch harness
connector.
Note
CHECK CIRCUIT CONTINUITY
BETWEEN ECM HARNESS CONNEC-
TOR TERMINAL NO.j
46AND DUAL-
PRESSURE SWITCH HARNESS CON-
NECTOR TERMINAL NO.j
2.
Continuity should exist.
If OK, check harness for short.
OK
CHECK DUAL-PRESSURE SWITCH.
Refer to HA-119 in Y61 SERVICE
MANUAL, publication No. SM7E-2Y61G1.
OK
cNG
Replace dual-pressure
switch.
jB
(Go to next page.)
Note:
If the result is NG or No after checking circuit continuity, repair harness
or connector.
RHA655GC
RHA389I
RHA657GC
RHA390I
.
.
.
.
.
.
.
.
TROUBLE DIAGNOSESAUTO
Magnet Clutch (Cont'd)
HA-4044

jB
Note
Check circuit continuity between dual-pres-
sure switch harness connector terminal No.
j
1and auto amp. harness connector ter-
minal No.j
4.
Continuity should exist.
If OK, check harness for short.
OK
Replace auto amp.
Note:
If the result is NG or No after checking circuit continuity, repair harness
or connector.
RHA227IA
.
.
TROUBLE DIAGNOSESAUTO
Magnet Clutch (Cont'd)
HA-4045

DIAGNOSTIC PROCEDURE (MODELS WITH TD
ENGINE)
SYMPTOM: Magnet clutch does not engage when A/C switch
and fan control dial are ON.
CHECK POWER SUPPLY FOR COM-
PRESSOR.
Disconnect compressor harness connec-
tor.
Do approx. 12 volts exist between com-
pressor harness terminal No.j
1and
ground?
No
cYe s
Check magnet clutch coil.
NG
Replace magnet clutch.
Refer to HA-178 in Y61
SERVICE MANUAL, publi-
cation No. SM7E-2Y61G1.
Disconnect A/C cut relay.
Note
CHECK CIRCUIT CONTINUITY
BETWEEN A/C CUT RELAY HARNESS
CONNECTOR TERMINAL NO.j
3AND
COMPRESSOR HARNESS CONNECTOR
TERMINAL NO.j
1.
Continuity should exist.
If OK, check harness for short.
OK
CHECK A/C CUT RELAY.
Refer to HA-4051.
OK
cNG
Replace A/C cut relay.
Note
CHECK CIRCUIT CONTINUITY
BETWEEN A/C RELAY HARNESS CON-
NECTOR TERMINAL NO.j
7AND A/C
CUT RELAY HARNESS CONNECTOR
TERMINAL NO.j
4.
Continuity should exist.
If OK, check harness for short.
OK
j
A
(Go to next page.)
Note:
If the result is NG or No after checking circuit continuity, repair harness
or connector.
RHA392I
SHA579F
SHA580F
RHA393I
.
.
.
.
.
.
TROUBLE DIAGNOSESAUTO
Magnet Clutch (Cont'd)
HA-4046

jA
Note
CHECK CIRCUIT CONTINUITY
BETWEEN A/C CUT RELAY HARNESS
CONNECTOR TERMINAL NO.j
1AND
GROUND.
OK
Note
CHECK CIRCUIT CONTINUITY
BETWEEN A/C CUT RELAY HARNESS
CONNECTOR TERMINAL NO.j
2AND
ENGINE COOLANT TEMPERATURE
SWITCH-2 HARNESS CONNECTOR
TERMINAL NO.j
2.
OK
CHECK ENGINE COOLANT TEMPERA-
TURE SWITCH-2.
Refer to HA-4051.
OK
cNG
Replace engine coolant
temperature switch-2.
CHECK POWER SUPPLY FOR ENGINE
COOLANT TEMPERATURE SWITCH-2.
Do approx. 12 volts exist between engine
coolant temperature switch-2 harness con-
nector terminal No.j
1and ground?
Ye s
cNo
Check power supply circuit
and 10A or 20A (No.
6)
located in the fuse block
(J/B).
Refer to EL section (ªWir-
ing Diagramº, ªPOWER
SUPPLY ROUTINGº).
CHECK POWER SUPPLY FOR A/C
RELAY.
Do approx. 12 volts exist between A/C
relay harness connector terminal Nos.j
1,
j6and ground?
Ye sNo
m
Note
CHECK CIRCUIT CONTINUITY
BETWEEN A/C RELAY HARNESS CON-
NECTOR TERMINAL NO.j
2AND DUAL-
PRESSURE SWITCH HARNESS CON-
NECTOR TERMINAL NO.j
2.
Continuity should exist.
If OK, check harness for short.
OK
j
B(Go to next page.)
Note:
If the result is NG or No after checking circuit continuity, repair harness
or connector.
RHA394I
RHA395I
RHA396I
RHA397I
RHA398I
.
.
.
.
.
.
.
TROUBLE DIAGNOSESAUTO
Magnet Clutch (Cont'd)
HA-4047

jB
CHECK DUAL-PRESSURE SWITCH.
Refer to HA-119 in Y61 SERVICE
MANUAL, publication No. SM7E-2Y61G1.
OK
cNG
Replace dual-pressure
switch.
Note
CHECK CIRCUIT CONTINUITY
BETWEEN DUAL-PRESSURE SWITCH
HARNESS CONNECTOR TERMINAL NO.
j
1AND AUTO AMP. HARNESS CON-
NECTOR TERMINAL NO.j4.
Continuity should exist.
If OK, check harness for short.
OK
Replace auto amp.
Note:
If the result is NG or No after checking circuit continuity, repair harness
or connector.
RHA227IA
.
.
.
TROUBLE DIAGNOSESAUTO
Magnet Clutch (Cont'd)
HA-4048