relay NISSAN PATROL 2006 Repair Manual

Voltage check method
1. Remove the blown fuse and disconnect all loads (i.e. SW1 open, relay disconnected and solenoid discon-
nected) powered through the fuse.
2. Turn the ignition key to the ON or START position. Verify battery voltage at the B
+side of the fuse ter-
minal (one lead on the B
+terminal side of the fuse block and one lead on a known good ground).
3. With SW1 open and the DMM leads across both fuse terminals, check for voltage.
voltage; short is between fuse block and SW1 (point A).
no voltage; short is further down the circuit than SW1.
4. With SW1 closed, relay and solenoid disconnected and the DMM leads across both fuse terminals, check
for voltage.
voltage; short is between SW1 and the relay (point B).
no voltage; short is further down the circuit than the relay.
5. With SW1 closed, relay contacts jumped with fused jumper wire check for voltage.
voltage; short is down the circuit of the relay or between the relay and the disconnected solenoid
(point C).
no voltage; retrace steps and check power to fuse block.
GROUND INSPECTION
Ground connections are very important to the proper operation of electrical and electronic circuits. Ground
connections are often exposed to moisture, dirt and other corrosive elements. The corrosion (rust) can become
an unwanted resistance. This unwanted resistance can change the way a circuit works.
Electronically controlled circuits are very sensitive to proper grounding. A loose or corroded ground can dras-
tically affect an electronically controlled circuit. A poor or corroded ground can easily affect the circuit. Even
when the ground connection looks clean, there can be a thin ®lm of rust on the surface.
When inspecting a ground connection follow these rules:
1. Remove the ground bolt screw or clip.
2. Inspect all mating surfaces for tarnish, dirt, rust, etc.
3. Clean as required to assure good contact.
4. Reinstall bolt or screw securely.
5. Inspect for ``add-on'' accessories which may be interfering with the ground circuit.
6. If several wires are crimped into one ground eyelet terminal, check for proper crimps. Make sure all of the
wires are clean, securely fastened and providing a good ground path. If multiple wires are cased in one
eyelet make sure no ground wires have excess wire insulation.
SGI853
HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT
Circuit Inspection (Cont'd)
GI-26

DIAGNOSTIC PROCEDURE
SYMPTOM: Magnet clutch does not engage when A/C switch
and fan switch are ON.
CHECK POWER SUPPLY FOR COM-
PRESSOR.
Disconnect compressor harness connector.
Do approx. 12 volts exist between compres-
sor harness terminal No.j
1and body
ground?
No
cYe s
Check magnet clutch coil.
NG
Replace magnet clutch.
Refer to HA-123.
Disconnect A/C relay.
Note
CHECK CIRCUIT CONTINUITY
BETWEEN A/C RELAY HARNESS TERMI-
NAL NO.j
7AND COMPRESSOR HAR-
NESS TERMINAL NO.j1.
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 terminal Nos.j
1,j6and
body ground?
Ye s
cNo
CHECK POWER SUPPLY
CIRCUIT AND 10A (No.
) FUSES AT FUSE
BLOCK.
Refer to EL section (``Wiring
Diagram'', ``POWER SUP-
PLY ROUTING'').
CHECK A/C RELAY AFTER DISCON-
NECTING IT.
Refer to HA-47.
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.
RHA747FE
RHA607GA
RHA608G
.
.
.
.
.
.
TROUBLE DIAGNOSESMANUAL
Magnet Clutch (Cont'd)
HA-44

jA
Reconnect A/C relay.
CHECK COIL SIDE CIRCUIT OF A/C
RELAY.
Do approx. 12 volts exist between ECM
(ECCS control module) harness terminal
No.j
9and body ground?
Ye s
cNo
Disconnect A/C relay.
Disconnect ECM (ECCS
control module) harness
connector.
Note
CHECK CIRCUIT CONTI-
NUITY BETWEEN A/C
RELAY HARNESS TERMI-
NAL NO.j
2AND ECM
(ECCS CONTROL MOD-
ULE) HARNESS TERMI-
NAL NO.j
9.
Continuity should exist.
If OK, check harness for
short.
CHECK VOLTAGE FOR ECM (ECCS con-
trol module).
Do approx. 12 volts exist between ECM
(ECCS control module) harness terminal
No.j
46and body ground?
Ye s
cNo
CHECK ECM (ECCS con-
trol module). Refer to EC
section.
Disconnect ECM (ECCS control module)
harness connector.
Disconnect dual-pressure switch harness
connector.
Note
CHECK CIRCUIT CONTINUITY
BETWEEN ECM (ECCS CONTROL MOD-
ULE) HARNESS TERMINAL NO.j
46AND
DUAL-PRESSURE SWITCH HARNESS
TERMINAL NO.j
2.
Continuity should exist.
If OK, check harness for short.
OK
CHECK DUAL-PRESSURE SWITCH.
Refer to HA-47.
OK
cNG
Check refrigerant charge
amount.
OK
Disconnect thermo control amp. switch
harness connector.
Replace dual-pressure
switch.
Note
CHECK CIRCUIT CONTINUITY
BETWEEN DUAL-PRESSURE SWITCH
HARNESS TERMINAL NO.j
1AND
THERMO CONTROL AMP. HARNESS
TERMINAL NO.j
3.
Continuity should exist.
If OK, check harness for short.
OK
j
B
Note:
If the result is NG or No after checking circuit continuity, repair harness or
connector.
RHA749FA
RHA609G
RHA610G
RHA611G
RHA612G
.
.
.
.
.
.
.
..
.
.
TROUBLE DIAGNOSESMANUAL
Magnet Clutch (Cont'd)
HA-45

ELECTRICAL COMPONENTS INSPECTION
A/C switch
Check continuity between terminals at each switch position.
Switch condition Terminal No.
Continuity
A/C (+) (þ)
ON
j
2j1Ye s
OFF No
A/C relay
Check continuity between terminalsj3andj5,j6andj7.
Condition Continuity
12V direct current supply between
terminalsj
1andj2Ye s
No current supply No
Dual-pressure switch
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)
Thermo control amp.
Evaporator outlet air
temperature
ÉC (ÉF)Thermo amp. operation Tester
Decreasing to 0.1 - 0.9
(32 - 34)Turn OFF Approx. 12V
Increasing to 2.5 - 3.5
(37 - 38)Turn ON Approx. 0V
RHA626G
SEC202B
RHA628G
RHA736G
TROUBLE DIAGNOSESMANUAL
Magnet Clutch (Cont'd)
HA-47

AUTO AMP. INSPECTION TABLE
TERMINAL
No.ITEM CONDITIONVoltage
V
1 Power supply for IGN
Ð Approximately 12
2 Power supply for BAT
Ð Approximately 12
3 Ground Ð Ð
4 Compressor ON signal
CompressorON Approximately 0
OFF Approximately 12
5Power supply for mode and air mix
door motor
Ð Approximately 12
8 In-vehicle sensor Ð Ð
9 Ambient sensor Ð Ð
10 Sunload sensor Ð Ð
11 Ground Ð Ð
12 Power supply for illumination
Illumination switch ON Approximately 12
13 Intake door position switchRECIRCULATION Approximately 0
FRESH or 20% FRESH Approximately 12
14 Intake door position switchFRESH Approximately 0
RECIRCULATION or 20% FRESH Approximately 12
15 LAN signal Ð Approximately 5.5
17 Fan control amp. control signal Fan speedLow, middle low or middle high Approximately 2.5 - 3.0
High Approximately9-10
18 Blower motor feed back Ð Approximately 12
20 Power supply for blower motor
Ð Approximately 12
21 Thermal transmitter Ð Ð
23 Intake door position switch
20% FRESH Approximately 0
RECIRCULATION or FRESH Approximately 12
24 Sensor ground Ð Ð
25 Intake sensor Ð Ð
28 Rear cooler relay
Rear cooler ON Approximately 0
Rear cooler OFF Approximately 12
35 Rear cooler switchRear cooler switch ON Approximately 0
Rear cooler switch OFF Approximately 12
TROUBLE DIAGNOSESAUTO
Auto Amp. Terminals and Reference Value
(Cont'd)
HA-62

DIAGNOSTIC PROCEDURE
SYMPTOM: Magnet clutch does not engage when A/C switch
and fan switch are ON.
CHECK POWER SUPPLY FOR COM-
PRESSOR.
Disconnect compressor harness connector.
Do approx. 12 volts exist between compres-
sor harness terminal No.j
1and body
ground?
No
cYe s
Check magnet clutch coil.
NG
Replace magnet clutch.
Refer to HA-123.
Disconnect A/C relay.
Note
CHECK CIRCUIT CONTINUITY
BETWEEN A/C RELAY HARNESS TERMI-
NAL NO.j
7AND COMPRESSOR HAR-
NESS TERMINAL NO.j1.
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 terminal Nos.j
1,j6and
body ground?
Ye s
cNo
CHECK POWER SUPPLY
CIRCUIT AND 10A (No.
) FUSE AT FUSE
BLOCK.
Refer to EL section (``Wiring
Diagram'', ``POWER SUP-
PLY ROUTING'').
CHECK A/C RELAY AFTER DISCON-
NECTING IT.
Refer to HA-97.
OK OK
ECCS
engine
modelsExcept for
ECCS
engine
models
cNG
Replace A/C relay.
jA(Go to next page.)jB
Note:
If the result is NG or No after checking circuit continuity, repair harness or
connector.
RHA652G
RHA096GA
RHA653G
RHA654G
.
.
.
.
.
..
TROUBLE DIAGNOSESAUTO
Magnet Clutch (Cont'd)
HA-94

jA
Reconnect A/C relay.
CHECK COIL SIDE CIRCUIT OF A/C
RELAY.
Do approx. 12 volts exist between ECM
(ECCS control module) harness terminal
No.j
9and body ground?
Ye s
cNo
Disconnect A/C relay.
Disconnect ECM (ECCS
control module) harness
connector.
Note
CHECK CIRCUIT CONTI-
NUITY BETWEEN A/C
RELAY HARNESS TERMI-
NAL NO.j
2AND ECM
(ECCS CONTROL MOD-
ULE) HARNESS TERMI-
NAL NO.j
9.
Continuity should exist.
If OK, check harness for
short.
CHECK VOLTAGE FOR ECM (ECCS con-
trol module).
Do approx. 12 volts exist between ECM
(ECCS control module) harness terminal
No.j
46and body ground?
Ye s
cNo
CHECK ECM (ECCS con-
trol module). Refer to EC
section.
Disconnect ECM (ECCS control module)
harness connector.
Disconnect dual-pressure switch harness
connector.
Note
CHECK CIRCUIT CONTINUITY
BETWEEN ECM (ECCS CONTROL MOD-
ULE) HARNESS TERMINAL NO.j
46,j21
AND DUAL-PRESSURE SWITCH HAR-
NESS TERMINAL NO.j
2.
Continuity should exist.
If OK, check harness for short.
OK
CHECK DUAL-PRESSURE SWITCH.
Refer to HA-97.
OK
cNG
Replace dual-pressure
switch.
jC
Note:
If the result is NG or No after checking circuit continuity, repair harness
or connector.
RHA655G
RHA656G
RHA657G
RHA658G
.
.
.
.
.
.
.
.
TROUBLE DIAGNOSESAUTO
Magnet Clutch (Cont'd)
HA-95

jB
Note
Check circuit continuity between A/C relay
harness terminal No.j
2and dual-pressure
switch harness terminal No.j
2.
Continuity should exist.
If OK, check harness for short.
Ye s
CHECK DUAL-PRESSURE SWITCH.
Refer to HA-97.
OK
cNG
Replace dual-pressure
switch.
jC
.
CHECK THERMO CONTROL AMP. CIR-
CUIT.
Do approx. 12 volts exist between thermo
control amp. harness terminal No.j
3and
body ground?
Ye s
cNo
jD
CHECK POWER SUPPLY FOR THERMO
AMP.
Do approx. 12 volts exist between thermo
control amp. harness terminal No.j
1and
body ground?
Ye s
cNo
Check power supply circuit
and 10A fuse (No.
,
located in the fuse block).
Note
Check circuit continuity between thermo
control amp. harness terminal No.j
2and
auto amp. harness terminal No.j
4.
Continuity should exist.
If OK, check harness for short.
OK
CHECK THERMO CONTROL AMP.
Refer to HA-47.
OK
cNG
Replace thermo amp.
Replace auto amp.
Note:
If the result is NG or No after checking circuit continuity, repair harness
or connector.
RHA659G
RHA660G
RHA661G
RHA662G
.
.
.
.
.
.
.
TROUBLE DIAGNOSESAUTO
Magnet Clutch (Cont'd)
HA-96

jD
Note
Check circuit continuity between dual-pres-
sure switch harness terminal No.j
1and
thermo control amp. harness terminal No.
j
3.
Continuity should exist.
If OK, check harness for short.
Note:
If the result is NG or No after checking circuit continuity, repair harness
or connector.
COMPONENT INSPECTION
A/C relay
Check continuity between terminal Nos.j3andj5,j6andj7.
Conditions Continuity
12V direct current supply between terminal Nos.
j
1andj2Ye s
No current supply No
If NG, replace relay.
Dual-pressure switch
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)
RHA663G
SEC202B
RHA628G
.
TROUBLE DIAGNOSESAUTO
Magnet Clutch (Cont'd)
HA-97

A
A/C HFC134a (R134a) system service
procedure ..................................................HA-112
A/C HFC134a system service equip-
ment precaution ............................................HA-9
A/C air ¯ow .....................................................HA-13
A/C component layout ....................................HA-12
A/C compressor precaution..............................HA-6
A/C compressor special service tool ...........HA-6, 7
A/C control linkage adjustment (auto
A/C).............................................................HA-77
A/C control operation (manual A/C) ...............HA-16
A/C harness layout (manual A/C) ..................HA-17
A/C lubricant (R134a) ...................................HA-114
A/C relay.........................................................HA-97
A/C self-diagnoses (auto A/C)........................HA-63
A/CCUT - Wiring diagram ............................EC-186
A/T control ....................................................EC-174
ABS sensor rotor ............................................FA-15
ACC/SW - Wiring diagram ...........................EC-105
ACL/SW - Wiring diagram ............................EC-164
ADJRES - Wiring diagram .............................EC-91
APS - Wiring diagram ..................................EC-138
AT/C - Wiring diagram..................................EC-174
AUDIO - Wiring diagram ...............................EL-168
Accelerator position sensor ..........................EC-138
Accelerator position switch...........................EC-164
Accelerator switch (F/C) ...............................EC-105
Adjustment resistor.........................................EC-91
Air bag disposal..............................................RS-17
Air bag ..............................................................RS-8
Air bleeding (hydraulic clutch) ..........................CL-6
Air bleeding for brake system ..........................BR-4
Air cleaner ®lter replacement .........................MA-18
Air conditioner cut control ..............................EC-19
Air ¯ow meter - See Mass air ¯ow
sensor .........................................................EC-73
Air mix door control linkage
adjustment ................................................HA-81
Alternator.........................................................EL-56
Antenna - See Power antenna .....................EL-181
Audio and A/C control removal and
installation - See Instrument panel .............BT-11
Audio .............................................................EL-168
Auto lock free running hub .............................FA-13
Automatic ampli®er .........................................HA-61
Axle housing (rear) ...........................................RA-9
B
BACK/L - Wiring diagram................................EL-78
Back door opener - See Back door ..................BT-6
Back door trim.................................................BT-24
Back door window...........................................BT-45
Back door ..........................................................BT-6Back-up lamp switch (M/T) ..............................MT-4
Back-up lamp ..................................................EL-78
Battery .............................................................EL-37
Baulk ring (M/T)..............................................MT-10
Body alignment ...............................................BT-49
Body mounting ................................................BT-48
Brake booster .................................................BR-15
Brake ¯uid change ...........................................BR-3
Brake ¯uid level and line check .......................BR-3
Brake ¯uid level .............................................MA-23
Brake hydraulic line ..........................................BR-5
Brake inspection ............................................MA-24
Brake master cylinder ....................................BR-12
Brake pedal ....................................................BR-10
Bulb speci®cations ........................................EL-314
Bumper, front ................................................... BT-4
Bumper, rear .....................................................BT-6
C
CD/CHG - Wiring diagram ............................EL-176
CHIME - Wiring diagram...............................EL-136
CIGAR - Wiring diagram ...............................EL-156
CKPS - Wiring diagram ................................EC-143
CLOCK - Wiring diagram ..............................EL-157
CMPS - Wiring diagram .................................EC-68
COMPAS - Wiring diagram ...........................EL-117
CONSULT for ECCS ......................................EC-36
CONSULT general information ........................GI-33
COOL/F - Wiring diagram ............................EC-112
CSPS - Wiring diagram ..................................EC-86
Cab body.........................................................BT-47
Camshaft inspection ......................................EM-36
Camshaft position sensor (PUMP).................EC-68
Center case (Transfer) ....................................TF-10
Charge air cooler fan control .......................EC-177
Charge air temperature sensor ....................EC-121
Chassis and body maintenance ....................MA-20
Cigarette lighter.............................................EL-156
Circuit breaker.................................................EL-14
Clock .............................................................EL-157
Clutch booster...................................................CL-9
Clutch cover ....................................................CL-14
Clutch damper ..................................................CL-7
Clutch disc ......................................................CL-13
Clutch ¯uid level.............................................MA-20
Clutch master cylinder ......................................CL-7
Clutch operating cylinder ..................................CL-8
Clutch pedal ......................................................CL-5
Clutch release bearing ....................................CL-11
Clutch release mechanism .............................CL-11
Clutch withdrawal lever ...................................CL-11
Coil spring (front) ............................................FA-25
Coil spring (rear) ............................................RA-14
Collision diagnosis..........................................RS-45
Combination meter removal and instal-
lation - See Instrument panel ......................BT-11
ALPHABETICAL INDEX
IDX-2