ECM DIAGRAM NISSAN PATROL 2004 Electronic Repair Manual

ENGINECONTROLSYSTEM
SECTION
EC
MODIFICATION NOTICE:
+Wiring diagrams have been modi®ed.
+ MAF sensor has been changed for ZD30DDTi engine models.
CONTENTS
TB45E
ENGINE AND EMISSION CONTROL OVERALL
SYSTEM .....................................................................4003
Circuit Diagram ......................................................4003
TROUBLE DIAGNOSIS FOR NON-DETECTABLE
ITEMS ........................................................................\
.4004
Vehicle Speed Sensor (VSS) ................................4004
TB48DE M/T
ENGINE AND EMISSION CONTROL OVERALL
SYSTEM.....................................................................4005
Circuit Diagram ......................................................4005
VEHICLE SPEED SENSOR (VSS) ...........................4007
Wiring Diagram ......................................................4007
ELECTRICAL LOAD SIGNAL ...................................4008
Wiring Diagram ......................................................4008
Diagnostic Procedure ............................................4009
TB48DE A/T
ENGINE AND EMISSION CONTROL OVERALL
SYSTEM.....................................................................4013
Circuit Diagram ......................................................4013
SNOW MODE SWITCH .............................................4015
Wiring Diagram ......................................................4015
ELECTRICAL LOAD SIGNAL ...................................4016
Wiring Diagram ......................................................4016
Diagnostic Procedure ............................................4018
TB48DE A/T (WITH EURO-OBD)
TROUBLE DIAGNOSIS .............................................4022
Circuit Diagram ......................................................4022
SNOW MODE SWITCH .............................................4024
Wiring Diagram ......................................................4024
ELECTRICAL LOAD SIGNAL ...................................4025 Wiring Diagram ......................................................4025
Diagnostic Procedure ............................................4027
TD42
QUICK-GLOW SYSTEM ............................................4031
Circuit Diagram ......................................................4031
Wiring Diagram ......................................................4033
FAST IDLE CONTROL CIRCUIT ..............................4036
Wiring Diagram ......................................................4036
ZD30DDTi
ENGINE AND EMISSION CONTROL OVERALL
SYSTEM.....................................................................4037
Circuit Diagram ......................................................4037
TROUBLE DIAGNOSIS Ð GENERAL
DESCRIPTION ...........................................................4038
CONSULT-II Reference Value in Data Monitor
Mode ......................................................................4038
ECM Terminals and Reference Value ...................4040
DTC 0102 MASS AIR FLOW SEN ............................4047
Component Description .........................................4047
CONSULT-II Reference Value in Data Monitor
Mode ......................................................................4047
ECM Terminals and Reference Value ...................4047
On Board Diagnosis Logic.....................................4047
DTC Con®rmation Procedure ................................4048
Wiring Diagram ......................................................4049
Diagnostic Procedure ............................................4050
DTC 0104 VEHICLE SPEED SEN ............................4053
Wiring Diagram ......................................................4053
HEAT UP SWITCH ....................................................4054
Wiring Diagram ......................................................4054
Diagnostic Procedure ............................................4055
AIR CONDITIONER CONTROL ................................4058
Wiring Diagram ......................................................4058
EC-4001

jB
CHECK REAR WINDOW DEFOGGER
FUNCTION.
1. Start engine.
2. Turn ON the rear window defogger
switch.
3. Check the rear windshield.
Is the rear windshield heated up?
Ye s
cNo
Refer to EL section.
CHECK POWER SUPPLY CIRCUIT.
1. Stop engine.
2. Disconnect rear window defogger relay.
3. Check voltage between rear window
defogger relay terminalj
3and ground
with CONSULT-II or tester.
Voltage: Battery voltage
OK
cNG
Check the following.
+15A fuse
+Harness for open or
short between rear win-
dow defogger relay and
battery
If NG, repair open circuit or
short to ground or short to
power in harness or con-
nectors.
CHECK INPUT SIGNAL CIRCUIT FOR
OPEN OR SHORT.
1. Disconnect ECM harness connector.
2. Check harness continuity between rear
window defogger relay terminalj
5and
ECM terminalj
96.
Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground
and short to power.
OK
cNG
Check the following.
+Harness connectors
E127,M21
+Harness connectors
M50,F5
+Harness for open or
short between rear win-
dow defogger relay and
ECM
If NG, repair open circuit or
short to ground or short to
power in harness or con-
nectors.
CHECK REAR WINDOW DEFOGGER
RELAY.
Refer to EL section.
OK
cNG
Replace rear window
defogger relay.
CHECK INTERMITTENT INCIDENT.
Refer to ªTROUBLE DIAGNOSIS FOR
INTERMITTENT INCIDENTº, EC-125 in
Service Manual (Publication No. SM1E-
Y61EG1).
INSPECTION END
PBIB0302E
.
.
.
.
.
.
ELECTRICAL LOAD SIGNALTB48DE M/T
Diagnostic Procedure (Cont'd)
EC-4011

3 CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch ªOFFº.
2. Loosen and retighten engine ground screws.
SEF227Z
3. Disconnect ECM harness connector.
4. Disconnect TCM harness connector.
5. Check harness continuity between mass air ¯ow sensor terminal 3 and ECM terminal 50, TCM terminal 42. Refer to Wiring Dia-
gram.
Continuity should exist.
6. Also check harness for short to ground and short to power.
OK or NG
OKcGO TO 5.
NGcGO TO 4.
4 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors E230, F12
+Harness connectors M51, F6
+Harness connectors E106, M88
+Harness for open or short between mass air ¯ow sensor and ECM
+Harness for open or short between mass air ¯ow sensor and TCM (Transmission control module)
cRepair open circuit or short to ground or short to power in harness or connectors.
5 CHECK MAF SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between mass air ¯ow sensor terminal 4 and ECM terminal 35. Refer to Wiring Diagram.
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OKcGO TO 7.
NGcGO TO 6.
6 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors E230, F12
+Harness for open or short between mass air ¯ow sensor and ECM
cRepair open circuit or short to ground or short to power in harness or connectors.
DTC 0102 MASS AIR FLOW SENZD30DDTi
Diagnostic Procedure (Cont'd)
EC-4051

7 CHECK SHIELD CIRCUIT
1. Disconnect harness connectors E230, F12.
2. Check harness continuity between harness connector F12 terminal 5 and ground.
Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to power.
OK or NG
OKcGO TO 9.
NGcGO TO 8.
8 DETECT MALFUNCTIONING PART
Check the following.
+Joint connector-4
+Harness for open or short between harness connector F12 and ground
cRepair open circuit or short to power in harness or connectors.
9 CHECK MASS AIR FLOW SENSOR
1. Reconnect harness connectors disconnected.
2. Start engine and warm it up to normal operating temperature.
3. Check voltage between ECM terminal 35 (Mass air ¯ow sensor signal) and ground.
SEF400YA
4. If the voltage is out of speci®cation, proceed the following.
a. Check for the cause of uneven air ¯ow through mass air ¯ow sensor. Refer to the following.
+Crushed air ducts
+Malfunctioning seal of air cleaner element
+Uneven dirt of air cleaner element
+Improper speci®cation of intake air system parts
b. If NG, repair or replace malfunctioning part and perform steps 2 to 4 again.
5. Turn ignition switch ªOFFº.
6. Disconnect MAFS harness connector and connect it again.
7. Perform steps 2 and 3 again.
OK or NG
OKcGO TO 10.
NGcReplace mass air ¯ow sensor.
10 CHECK INTERMITTENT INCIDENT
Refer to ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-107 in Service Manual (Publication No. SM9E-Y61CG3).
cINSPECTION END
DTC 0102 MASS AIR FLOW SENZD30DDTi
Diagnostic Procedure (Cont'd)
EC-4052

4 CHECK HEAT UP SWITCH POWER SUPPLY CIRCUIT
1. Turn heat up switch ªOFFº.
2. Turn ignition switch ªOFFº.
3. Disconnect heat up switch harness connector.
4. Turn ignition switch ªONº.
5. Check voltage between heat up switch terminal 1 and ground with CONSULT-II or tester.
SEC016E
OK or NG
OKcGO TO 6.
NGcGO TO 5.
5 DETECT MALFUNCTIONING PART
Check the following.
+Fuse block (J/B) connector M3
+10A fuse
+Harness for open or short between heat up switch and fuse
cRepair open circuit or short to ground or short to power in harness or connectors.
6 CHECK HEAT UP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN OR SHORT
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 59 and heat up switch terminals 3, 5. Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OKcGO TO 8.
NGcGO TO 7.
7 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors M51, F6
+Harness for open or short between heat up switch and ECM
cRepair open circuit or short to ground or short to power in harness or connectors.
HEAT UP SWITCHZD30DDTi
Diagnostic Procedure (Cont'd)
EC-4056

(For ECM equipped models except TD42Ti engine and TD engine with NATS)
INSPECTION PROCEDURE
If the CONSULT-II cannot diagnose the system properly, check the following items.
Symptom Check item
CONSULT-II cannot access any
system.+CONSULT-II DLC power supply circuit (Terminal 8) and ground circuit (Terminal 4)
(For detailed circuit, refer to EC section, ªMIL & DATA LINK CONNECTORSº.)
+CONSULT-II (DDL) cable
CONSULT-II cannot access indi-
vidual system. (Other systems
can be accessed.)+CONSULT-II program card (Check the appropriate CONSULT-II program card for the system.
Refer to ªChecking Equipmentº above.)
+Power supply and ground circuit for the control unit of the system
(For detailed circuit, refer to wiring diagram for each system.)
+Open or short circuit between the system and CONSULT-II DLC
(For detailed circuit, refer to wiring diagram for each system.)
TGI006M
CONSULT-II CHECKING SYSTEM
CONSULT-II Data Link Connector (DLC) Circuit
(Cont'd)
GI-4004

A
A/C operational check ................................HA-4032
A/C self-diagnoses (auto A/C)....................HA-4025
A/C, A - Wiring diagram .............................HA-4009
A/CCUT - Wiring diagram ..........................EC-4058
Air cleaner ®lter replacement .....................MA-4003
Air ¯ow meter - See Mass air ¯ow
sensor .....................................................EC-4047
Air mix. door motor.....................................HA-4036
Antenna .......................................................EL-4164
ASCD (automatic speed control
device) .....................................................EL-4233
ASCD - Wiring diagram ..............................EL-4234
A/T - Wiring diagram ...................................AT-4003
A/T trouble diagnoses .................................AT-4011
A/T Wiring diagram AT - NONDTC .............AT-4012
Audio ...........................................................EL-4136
AUDIO - Wiring diagram .............................EL-4137
Audio and A/C control removal and
installation - See Instrument panel .........BT-4006
Auto air conditioner - Wiring diagram ........HA-4009
Automatic speed control system - See
ASCD ......................................................EL-4233
AV and NAVI control unit ............................EL-4164
B
Back-up lamp ..............................................EL-4055
BACK/L - Wiring diagram............................EL-4055
Blower motor ..............................................HA-4038
Bumper, front ..............................................BT-4002
Bumper, rear ...............................................BT-4005
C
Camshaft ....................................................EM-4003
CHIME - Wiring diagram .............................EL-4113
Combination meter......................................EL-4095
Combination meter removal and instal-
lation - See Instrument panel..................BT-4006
Combination switch .....................................EL-4034
COMPAS - Wiring diagram .........................EL-4099
Console box - See Instrument panel ..........BT-4006
CONSULT-II general information.................GI-4002
Cruise control - See ASCD .........................EL-4233
Cylinder head .............................................EM-4016
D
Daytime light system...................................EL-4047
DEF - Wiring diagram .................................EL-4126
DEICER - Wiring diagram...........................EL-4125
Dimensions ..................................................GI-4008
D/LOCK - Wiring diagram ...........................EL-4245Dome light - See Interior lamp ...................EL-4088
DTRL - Wiring diagram ...............................EL-4047
E
ECM input/output signal .............................EC-4040
Electrical load signal circuit ...EC-4008, 4016, 4025
Electrical units location ...............................EL-4300
Engine control circuit
diagram .............................EC-4003, 4005, 4013,
4022, 4037, 4059
Exhaust system ..........................................FE-4008
Exterior ........................................................BT-4009
F
F/FOG - Wiring diagram .............................EL-4061
FICD - Wiring diagram ...............................EC-4036
Fog lamp, front............................................EL-4061
Fog lamp, rear ............................................EL-4064
Front bumper ..............................................BT-4002
Front fog lamp.............................................EL-4061
Front washer ...............................................EL-4117
Front wiper ..................................................EL-4117
Fuel gauge ..................................................EL-4095
Fuse ..............................................................Foldout
Fusible link....................................................Foldout
G
Gauges........................................................EL-4095
GLOW - Wiring diagram.............................EC-4033
GPS antenna ..............................................EL-4164
Ground distribution......................................EL-4016
H
Harness layout ..................................EL-4307, 4308
Headlamp ....................................................EL-4040
Headlamp washer .......................................EL-4122
Heat up switch............................................EC-4054
Heated seat.................................................EL-4231
HEATUP - Wiring diagram .........................EC-4054
Height (Dimensions) ....................................GI-4008
H/LAMP - Wiring diagram ...........................EL-4040
HLC - Wiring diagram .................................EL-4122
Hood............................................................BT-4002
Horn ............................................................EL-4124
HORN - Wiring diagram..............................EL-4124
HSEAT - Wiring diagram.............................EL-4231
I
ILL - Wiring diagram ...................................EL-4080
ALPHABETICAL INDEX
IDX-4002