overheating 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