heating NISSAN PATROL 2000 Electronic Repair Manual

A/T Fluid Check
FLUID LEAKAGE CHECK
1. Clean area suspected of leaking. Ð for example, mating
surface of converter housing and transmission case.
2. Start engine, apply foot brake, place selector lever in ªDº
position and wait a few minutes.
3. Stop engine.
4. Check for fresh leakage.
FLUID CONDITION CHECK
Fluid color Suspected problem
Dark or black with burned odor Wear of frictional material
Milky pinkWater contamination Ð Road water
entering through filler tube or breather
Varnished fluid, light to dark brown
and tackyOxidation Ð Over or under filling, Ð
Overheating
FLUID LEVEL CHECK
Refer to MA section (ªChecking A/T Fluidº, ªCHASSIS AND
BODY MAINTENANCEº).
Stall Test
STALL TEST PROCEDURE
1. Check A/T and engine fluid levels. If necessary, add.
2. Drive vehicle for approx. 10 minutes or until engine oil and
ATF reach operating temperature.
ATF operating temperature:
50 - 80ÉC (122 - 176ÉF)
3. Set parking brake and block wheels.
4. Install a tachometer where it can be seen by driver during
test.
+It is good practice to put a mark on point of specified
engine rpm on indicator.
5. Start engine, apply foot brake, and place selector lever in ªDº
position.
6. Accelerate to wide open throttle gradually while applying foot
brake.
7. Quickly note the engine stall revolution and immediately
release throttle.
+During test, never hold throttle wide open for more than
5 seconds.
Stall revolution:
2,480 - 2,680 rpm
SAT801A
SAT638A
SAT647B
SAT513G
SAT514G
TROUBLE DIAGNOSIS Ð Basic Inspection
AT-1041

On Board Diagnosis Logic ............................... 1092
DTC Confirmation Procedure .......................... 1092
Wiring Diagram ................................................ 1093
Diagnostic Procedure....................................... 1094
DTC 0104 VEHICLE SPEED SEN...................... 1096
Description ....................................................... 1096
ECM Terminals and Reference Value ............. 1096
On Board Diagnosis Logic ............................... 1096
Overall Function Check ................................... 1097
Wiring Diagram ................................................ 1098
Diagnostic Procedure....................................... 1099
DTC 0203 ACCEL POS SW (F/C)...................... 1100
Description ....................................................... 1100
CONSULT-II Reference Value in Data Monitor
Mode ................................................................ 1100
ECM Terminals and Reference Value ............. 1100
On Board Diagnosis Logic ............................... 1100
DTC Confirmation Procedure .......................... 1101
Wiring Diagram ................................................ 1102
Diagnostic Procedure....................................... 1103
DTC 0208 OVER HEAT....................................... 1105
Description ....................................................... 1105
CONSULT-II Reference Value in Data Monitor
Mode ................................................................ 1105
ECM Terminals and Reference Value ............. 1106
On Board Diagnosis Logic ............................... 1106
Overall Function Check ................................... 1107
Wiring Diagram ................................................ 1108
Diagnostic Procedure....................................... 1109
Main 12 Causes of Overheating ...................... 1116
DTC 0301 ECM 2, DTC 0901 ECM 12............... 1117
Description ....................................................... 1117
On Board Diagnosis Logic ............................... 1117
DTC Confirmation Procedure .......................... 1117
Diagnostic Procedure....................................... 1118
DTC 0402 P9zFUEL TEMP SEN......................... 1119
Description ....................................................... 1119
CONSULT-II Reference Value in Data Monitor
Mode ................................................................ 1120
ECM Terminals and Reference Value ............. 1120
On Board Diagnosis Logic ............................... 1120
DTC Confirmation Procedure .......................... 1121
Wiring Diagram ................................................ 1122
Diagnostic Procedure....................................... 1123
DTC 0403 ACCEL POS SENSOR...................... 1125
Description ....................................................... 1125
CONSULT-II Reference Value in Data Monitor
Mode ................................................................ 1125
ECM Terminals and Reference Value ............. 1126
On Board Diagnosis Logic ............................... 1126
DTC Confirmation Procedure .......................... 1127
Wiring Diagram ................................................ 1128
Diagnostic Procedure....................................... 1130
DTC 0406 INT AIR VOL...................................... 1138On Board Diagnosis Logic ............................... 1138
DTC Confirmation Procedure .......................... 1138
Diagnostic Procedure....................................... 1139
DTC 0407 CRANK POS SEN (TDC).................. 1140
Description ....................................................... 1140
CONSULT-II Reference Value in Data Monitor
Mode ................................................................ 1140
ECM Terminals and Reference Value ............. 1140
On Board Diagnosis Logic ............................... 1141
DTC Confirmation Procedure .......................... 1141
Wiring Diagram ................................................ 1142
Diagnostic Procedure....................................... 1143
DTC 0502 BATTERY VOLTAGE........................ 1146
On Board Diagnosis Logic ............................... 1146
DTC Confirmation Procedure .......................... 1146
Diagnostic Procedure....................................... 1146
DTC 0504 A/T COMM LINE................................ 1148
System Description .......................................... 1148
ECM Terminals and Reference Value ............. 1148
On Board Diagnosis Logic ............................... 1148
DTC Confirmation Procedure .......................... 1149
Overall Function Check ................................... 1149
Wiring Diagram ................................................ 1150
Diagnostic Procedure....................................... 1151
DTC 0701 P1zCAM POS SEN............................. 1153
Description ....................................................... 1153
CONSULT-II Reference Value in Data Monitor
Mode ................................................................ 1154
ECM Terminals and Reference Value ............. 1154
On Board Diagnosis Logic ............................... 1154
DTC Confirmation Procedure .......................... 1155
Wiring Diagram ................................................ 1156
Diagnostic Procedure....................................... 1157
DTC 0702 P2zTDC PULSE SIG........................... 1159
Description ....................................................... 1159
CONSULT-II Reference Value in Data Monitor
Mode ................................................................ 1160
ECM Terminals and Reference Value ............. 1160
On Board Diagnosis Logic ............................... 1160
DTC Confirmation Procedure .......................... 1161
Wiring Diagram ................................................ 1162
Diagnostic Procedure....................................... 1163
DTC 0703 P3zPUMP COMM LINE...................... 1165
Description ....................................................... 1165
CONSULT-II Reference Value in Data Monitor
Mode ................................................................ 1166
ECM Terminals and Reference Value ............. 1166
On Board Diagnosis Logic ............................... 1166
DTC Confirmation Procedure .......................... 1167
Wiring Diagram ................................................ 1168
Diagnostic Procedure....................................... 1169
DTC 0704 P4zSPILL/V CIRC, DTC 0706
P6zSPILL VALVE................................................. 1171
Description ....................................................... 1171
EC-1002

ECM Terminals and Reference Value
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may damage the
ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
14 L Cooling fan relayEngine is running.
Cooling fan is not operatingBATTERY VOLTAGE
(11 - 14V)
Engine is running.
Cooling fan is operatingApproximately 0.1V
On Board Diagnosis Logic
This diagnosis continuously monitors the engine coolant temperature.
If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will
rise.
When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is
indicated.
Malfunction is detected when ... Check Items (Possible Cause)
+Cooling fan does not operate properly (Overheat).
+Cooling fan system does not operate properly (Overheat).
+Engine coolant was not added to the system using the proper
filling method.+Harness or connectors
(The cooling fan circuit is open or shorted.)
+Cooling fan
+Radiator hose
+Radiator
+Radiator cap
+Water pump
+Thermostat
+Fan belt
+Engine coolant temperature sensor
For more information, refer to ªMAIN 12 CAUSES OF
OVERHEATINGº, EC-1116.
CAUTION:
When a malfunction is indicated, be sure to replace the coolant following the procedure in the MA
section (ªChanging Engine Coolantº, ªENGINE MAINTENANCEº). Also, replace the engine oil.
1) Fill radiator with coolant up to specified level with a filling speed of 2 liters per minute. Be sure
to use coolant with the proper mixture ratio. Refer to MA section (ªAnti-freeze Coolant Mixture
Ratioº, ªRECOMMENDED LUBRICANTS AND FLUIDSº).
2) After refilling coolant, run engine to ensure that no water-flow noise is emitted.
DTC 0208 OVER HEATZD30DDTi
EC-1106

17 CHECK MAIN 12 CAUSES
If the cause cannot be isolated, go to ªMAIN 12 CAUSES OF OVERHEATINGº, EC-1116.
cINSPECTION END
Main 12 Causes of Overheating
Engine Step Inspection item Equipment Standard Reference page
OFF 1+Blocked radiator
+Blocked condenser
+Blocked radiator grille
+Blocked bumper+Visual No blocking Ð
2+Coolant mixture+Coolant tester 30 - 50% coolant mixture See ªRECOMMENDED
FLUIDS AND LUBRI-
CANTSº in MA section.
3+Coolant level+Visual Coolant up to MAX level
in reservoir tank and
radiator filler neckSee ªChanging Engine
Coolantº, ªENGINE MAIN-
TENANCEº in MA sec-
tion.
4+Radiator cap+Pressure tester 78 - 98 kPa
(0.78 - 0.98 bar, 0.8 - 1.0
kg/cm
2, 11 - 14 psi)
59 - 98 kPa (0.59 - 0.98
bar, 0.6 - 1.0 kg/cm
2,
9 - 14 psi) (Limit)See ªSystem Checkº,
ªENGINE COOLING SYS-
TEMº in LC section.
ON*2 5+Coolant leaks+Visual No leaks See ªSystem Checkº,
ªENGINE COOLING SYS-
TEMº in LC section.
ON*2 6+Thermostat+Touch the upper and
lower radiator hosesBoth hoses should be hot. See ªThermostatº and
ªRadiatorº, ªENGINE
COOLING SYSTEMº in
LC section.
ON*1 7+Cooling fan+Visual Operating See ªDTC 0208 OVER
HEATº, EC-1105.
OFF 8+Combustion gas leak+Color checker chemical
tester 4 gas analyzerNegative Ð
ON*3 9+Coolant temperature
gauge+Visual Gauge less than 3/4
when drivingÐ
+Coolant overflow to res-
ervoir tank+Visual No overflow during driving
and idlingSee ªChanging Engine
Coolantº, ªENGINE MAIN-
TENANCEº in MA sec-
tion.
OFF*4 10+Coolant return from res-
ervoir tank to radiator+Visual Should be initial level in
reservoir tankSee ªENGINE MAINTE-
NANCEº in MA section.
OFF 11+Cylinder head+Straight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping)See ªInspectionº, ªCYLIN-
DER HEADº in EM sec-
tion.
12+Cylinder block and pis-
tons+Visual No scuffing on cylinder
walls or pistonSee ªInspectionº, ªCYLIN-
DER BLOCKº in EM sec-
tion.
*1: Engine running at idle.
*2: Engine running at 3,000 rpm for 10 minutes.
*3: Drive at 90 km/h (55 MPH) for 30 minutes and then let idle for 10 minutes.
*4: After 60 minutes of cool down time.
For more information, refer to ªOVERHEATING CAUSE ANALYSISº in LC section.
DTC 0208 OVER HEATZD30DDTi
Diagnostic Procedure (Cont'd)
EC-1116

Description
SYSTEM DESCRIPTION
Sensor Input Signal to ECMECM
FunctionActuator
Crankshaft position
sensor (TDC)Engine speed
Glow
controlGlow lamp,
Glow relay
¯
Glow plugs Engine coolant tem-
perature sensorEngine coolant tem-
perature
When engine coolant temperature is more than approximately
75ÉC (167ÉF), the glow relay turns off, inactivating the quick-glow
control until coolant temperature drops below approximately
55ÉC (131ÉF).
When coolant temperature is lower than approximately 75ÉC
(167ÉF):
+Ignition switch ON
After ignition switch has turned to ON, the glow relay turns
ON for a certain period of time in relation to engine coolant
temperature, allowing current to flow through glow plug.
+Cranking
The glow relay turns ON, allowing current to flow through
glow plug.
+Starting
After engine has started, current continues to flow through
glow plug (after-glow mode) for a certain period in relation to
engine coolant temperature.
When engine speed exceeds approximately 4,800 rpm, cur-
rent flow through glow plug is interrupted.
The glow indicator lamp turns ON for a certain period of time in
relation to engine coolant temperature at the time glow relay is
turned ON.
COMPONENT DESCRIPTION
Glow plug
+The glow plug is provided with a ceramic heating element to
obtain a high-temperature resistance. It glows in response to
a signal sent from the ECM, allowing current to flow through
the glow plug via the glow relay.
+This engine uses two types of glow plugs.
Type A has a blue or yellow paint mark.
Type B has no paint mark.
The location of the paint mark is shown in the figure.
WARNING:
Do not use two types of glow plugs at the same time.
SEF376Y
SEF280Z
GLOW CONTROL SYSTEMZD30DDTi
EC-1221

18 CHECK GLOW PLUG
1. Remove glow plug connecting plate.
2. Check glow plug resistance.
SEF236Z
NOTE:
+Do not bump glow plug heating element. If it is bumped, replace glow plug with a new one.
+If glow plug is dropped from a height of 10 cm (3.94 in) or higher, replace with a new one.
+If glow plug installation hole is contaminated with carbon, remove it with a reamer or suitable tool.
+Hand-tighten glow plug by turning it two or three times, then tighten using a tool to specified torque.
:15-20Nzm (1.5 - 2.1 kg-m, 11 - 15 ft-lb)
OK or NG
OKcGO TO 19.
NGcReplace glow plug.
19 CHECK INTERMITTENT INCIDENT
Refer to ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-1076.
cINSPECTION END
GLOW CONTROL SYSTEMZD30DDTi
Diagnostic Procedure (Cont'd)
EC-1229

Description
With the heat up switch ON, engine speed is increased and the
exhaust gas control valve is closed, which helps to promote
heating and improve heating performance.
The exhaust gas control valve control solenoid valve responds
to signals from the ECM. When the ECM sends an ON (ground)
signal, the solenoid valve is bypassed to apply vacuum pump
vacuum to the exhaust gas control valve actuator. This operation
closes the exhaust gas control valve. When the ECM sends an
OFF signal, the vacuum signal is cut and the exhaust gas con-
trol valve opens.
CONSULT-II Reference Value in Data Monitor
Mode
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
EXH/GAS REG V+Vehicle: Stopped
+Engine speed: Below 1,200 rpm
+Engine coolant temperature: Below 87ÉC (189ÉF)
+Heat up switch: ONON
Except above OFF
ECM Terminals and Reference Value
Specification data are reference values, and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may damage the
ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
11 BR/YExhaust gas control valve
control solenoid valveEngine is running.
Engine speed is below 1,200 rpm
Engine coolant temperature is below 87ÉC
(189ÉF)
Stop the vehicle
Heat up switch is ªONºApproximately 0.1V
Engine is running.
Except the above conditionBATTERY VOLTAGE
(11 - 14V)
SEF285Z
EXHAUST GAS CONTROL VALVE CONTROL
SOLENOID VALVEZD30DDTi
EC-1269

5. Disconnect harness connectors from alternator and air com-
pressor.
6. Remove alternator.
7. After removing refrigerant, remove pipes of air compressor
and inlet/outlet.
8. Disconnect heating hose, install blank cap to hose to prevent
coolant from leaking.
9. Remove heating pipe.
10. Remove heat insulator.
11. Remove catalytic converter.
Engine room (Right)
12. Remove power steering reservoir tank from bracket, and fix
it to the vehicle with a rope.
CAUTION:
Keep the reservoir tank level when fixing to prevent oil leak.
13. Remove fuel feed and return hoses.
CAUTION:
Install blank caps immediately to avoid fuel leakage.
14. Remove all harness connectors on the engine, and move
harnesses to the side of the vehicle.
Vehicle underfloor
15. Remove starter motor.
16. Detach A/T oil cooler pipes from oil pan. (A/T model)
17. Remove rear propeller shaft.
18. Remove mounting bolts to secure the engine to transmission.
1) Remove torque converter installation bolt. (A/T model)
2) Lift transmission bottom with transmission jack, and remove
rear mount members from the vehicle.
3) Lower transmission with the jack, and remove upper mount-
ing bolts securing the engine to transmission.
4) Lift transmission with the jack, and reinstall rear mount mem-
bers to the vehicle.
5) Position the jack to the front side of transmission.
6) Remove remaining mounting bolts securing the engine to
transmission.
Removal operation
19. Remove air conditioner high pressure pipes at the rear of the
engine room.
+This is due to some inconvenience in the rear slinger instal-
lation.
20. Install the engine slingers (standard service part) to front-left
and rear-right.
:25-28Nzm (2.5 - 2.9 kg-m, 18 - 20 ft-lb)
WARNING:
For engines without engine slingers, attach proper slingers
and bolts described in the PARTS CATALOG.
FEM082
ENGINE REMOVALZD
Removal (Cont'd)
EM-1065

Supplemental Restraint System (SRS) ªAIR
BAGº and ªSEAT BELT PRE-TENSIONERº
The Supplemental Restraint System such as ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº used along
with a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. The SRS system composition which is available to NISSAN MODEL Y61 is as follows (The
composition varies according to the destination and optional equipment.):
+For a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the
steering wheel), front passenger air bag module (located on the instrument panel on passenger side),
seat belt pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.
+For a side collision
The Supplemental Restraint System consists of front side air bag module (located in the outer side of
front seat), satellite sensor, diagnosis sensor unit (one of components of air bags for a frontal collision),
wiring harness, warning lamp (one of components of air bags for a frontal collision).
Information necessary to service the system safely is included in theRS sectionof this Service Manual.
WARNING:
+To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance should be per-
formed by an authorized NISSAN dealer.
+Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and
Air Bag Module, see the RS section.
+Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. Spiral cable and wiring harnesses covered with yellow insulation tape either just
before the harness connectors or for the complete harness are related to the SRS.
Precautions for Fuel
DIESEL ENGINE*:
Diesel fuel of at least 50 cetane for ZD30DDTi engine
* If two types of diesel fuel are available, use summer or win-
ter fuel properly according to the following temperature con-
ditions.
+Above þ7ÉC (20ÉF) ... Summer type diesel fuel.
+Below þ7ÉC (20ÉF) ... Winter type diesel fuel.
CAUTION:
+Do not use home heating oil, gasoline, or other alternate
fuels in your diesel engine. The use of those can cause
engine damage.
+Do not use summer fuel at temperature below þ7ÉC
(20ÉF). The cold temperature will cause wax to form in
the fuel. As a result, it may prevent the engine from run-
ning smoothly.
+Do not add gasoline or other alternate fuels to diesel
fuel.
PRECAUTIONS AND PREPARATION
GI-1002