Page 1649 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual DTC P1217 ENGINE OVER TEMPERATURE
EC-1299
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4.CHECK COOLING FAN OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check NISSAN X-TRAIL 2001 Service Repair Manual DTC P1217 ENGINE OVER TEMPERATURE
EC-1299
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4.CHECK COOLING FAN OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check](/manual-img/5/57405/w960_57405-1648.png)
DTC P1217 ENGINE OVER TEMPERATURE
EC-1299
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4.CHECK COOLING FAN OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 27 and cooling fan relay-2 terminal 2, cooling fan relay-3
terminal 2.
Refer to wiring diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors E61, F38
●Harness for open or short between cooling fan relays-2, -3 and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK COOLING FAN RELAYS-2 AND -3
Refer to EC-1300, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace cooling fan relays.
7.CHECK COOLING FAN MOTORS
Refer to EC-1300, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Replace cooling fan motors.
8.CHECK INTERMITTENT INCIDENT
Perform EC-1192, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Main 12 Causes of OverheatingEBS00N87
Continuity should exist.
Engine Step Inspection item Equipment Standard Reference page
OFF 1
●Blocked radiator
●Blocked condenser
●Blocked radiator grille
●Blocked bumper
●Visual No blocking —
2
●Coolant mixture●Coolant tester 50 - 50% coolant mixture See MA-18, "Engine
Coolant Mixture Ratio" .
3
●Coolant level●Visual Coolant up to MAX level
in reservoir tank and radi-
ator filler neckSeeCO-29, "Changing
Engine Coolant" .
4
●Radiator cap●Pressure tester 59 - 98 kPa
(0.59 - 0.98 bar, 0.6 - 1.0
kg/cm
2 , 9 - 14 psi) (Limit)SeeMA-21, "
CHECKING
RADIATOR CAP" .
Page 1650 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual EC-1300
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DTC P1217 ENGINE OVER TEMPERATURE
*1: Turn the ignition switch ON.
*2: Engine running at 3,000 rpm for 10 minutes.
*3: Drive at 90 km/h (55 MPH) for 30 minutes and the NISSAN X-TRAIL 2001 Service Repair Manual EC-1300
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DTC P1217 ENGINE OVER TEMPERATURE
*1: Turn the ignition switch ON.
*2: Engine running at 3,000 rpm for 10 minutes.
*3: Drive at 90 km/h (55 MPH) for 30 minutes and the](/manual-img/5/57405/w960_57405-1649.png)
EC-1300
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DTC P1217 ENGINE OVER TEMPERATURE
*1: Turn the ignition switch ON.
*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 CO-5, "
OVERHEATING CAUSE ANALYSIS" .
Component InspectionEBS00N88
COOLING FAN RELAYS-1, -2 AND -3
Check continuity between terminals 3 and 5, 6 and 7.
If NG, replace relay.
COOLING FAN MOTORS-1 AND -2
1. Disconnect cooling fan motor harness connectors.
2. Supply cooling fan motor terminals with battery voltage and
check operation.
Cooling fan motor should operate.
If NG, replace cooling fan motor.
ON*25●Coolant leaks●Visual No leaks See CO-29, "CHECKING
RADIATOR SYSTEM
FOR LEAKS" .
ON*
26●Thermostat●Touch the upper and
lower radiator hosesBoth hoses should be hot See CO-20, "THERMO-
STAT AND WATER CON-
TROL VALVE" , and CO-
11 , "RADIATOR" .
ON*
17●Cooling fan●CONSULT-II Operating See trouble diagnosis for
DTC P1217 (EC-1287
).
OFF 8
●Combustion gas leak●Color checker chemical
tester 4 Gas analyzerNegative —
ON*
39●Coolant temperature
gauge●Visual Gauge less than 3/4
when driving—
●Coolant overflow to
reservoir tank●Visual No overflow during driving
and idlingSeeCO-29, "Changing
Engine Coolant" .
OFF*
410●Coolant return from
reservoir tank to radia-
tor●Visual Should be initial level in
reservoir tankSeeCO-29, "LEVEL
CHECK" .
OFF 11
●Cylinder head●Straight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping)SeeEM-59, "CYLINDER
HEAD" .
12
●Cylinder block and pis-
tons●Visual No scuffing on cylinder
walls or pistonSeeEM-73, "CYLINDER
BLOCK" . Engine Step Inspection item Equipment Standard Reference page
Conditions Continuity
12V direct current supply between terminals 1 and 2 Yes
No current supply No
SEF745U
SpeedTerminals
(+) (−)
Cooling fan motorLow 1 4
High 1, 2 3, 4
SEF734W
Page 1651 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual DTC P1805 BRAKE SWITCH
EC-1301
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DTC P1805 BRAKE SWITCHPFP:25320
DescriptionEBS00N89
Brake switch signal is applied to the ECM through the sto NISSAN X-TRAIL 2001 Service Repair Manual DTC P1805 BRAKE SWITCH
EC-1301
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DTC P1805 BRAKE SWITCHPFP:25320
DescriptionEBS00N89
Brake switch signal is applied to the ECM through the sto](/manual-img/5/57405/w960_57405-1650.png)
DTC P1805 BRAKE SWITCH
EC-1301
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DTC P1805 BRAKE SWITCHPFP:25320
DescriptionEBS00N89
Brake switch signal is applied to the ECM through the stop lamp switch when the brake pedal is depressed.
This signal is used mainly to decrease the engine speed when the vehicle is driving.
CONSULT-II Reference Value in Data Monitor ModeEBS00N8A
Specification data are reference values.
ECM Terminals and Reference ValueEBS00N8B
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 result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
On Board Diagnosis LogicEBS00N8C
The MI will not light up for this diagnosis.
FAIL-SAFE MODEEBS00N8D
When the malfunction is detected, the ECM enters in fail-safe mode.
DTC Confirmation ProcedureEBS00N8E
WITH CONSULT-II
1. Turn ignition switch “ON”.
2. Fully depress the brake pedal for at least 5 seconds.
3. Erase the DTC with CONSULT-II.
MONITOR ITEM CONDITION SPECIFICATION
BRAKE SW
●Ignition switch: ONBrake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
40 P Stop lamp switch[Engine is running]
●Brake pedal releasedApproximately 0V
[Engine is running]
●Brake pedal depressedBATTERY VOLTAGE
(11 - 14V)
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1805
1805Brake switchA brake switch signal is not sent to ECM for an
extremely long time while the vehicle is driving.
●Harness or connectors
(Stop lamp switch circuit is open or
shorted.)
●Stop lamp switch
Engine operation condition in fail-fail safe mode
ECM controls the electric throttle control actuator by regulating the throttle opening to a small range.Therefore,acceleration will be
poor.
Driving condition
When engine is idlingNormal
When acceleratingPoor acceleration
Page 1652 of 3833
EC-1302
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DTC P1805 BRAKE SWITCH
4. Select “DATA MONITOR” mode with CONSULT-II.
5. If 1st trip DTC is detected, go to EC-1304, "
Diagnostic Proce-
dure" .
WITHOUT CONSULT-II
1. Turn ignition switch “ON”.
2. Fully depress the brake pedal for at least 5 seconds.
3. Erase the “Diagnostic Test Mode II (Self-diagnostic results)” memory. Refer to EC-1143, "
How to Erase
DTC ( Without CONSULT-II)" .
4. Turn ignition switch “OFF”, wait at least 10 seconds and then turn “ON”.
5. Perform “Diagnostic Test Mode II (Self-diagnostic results)” with ECM.
6. If 1st trip DTC is detected, go to EC-1304, "
Diagnostic Procedure" .
SEF058Y
Page 1653 of 3833
DTC P1805 BRAKE SWITCH
EC-1303
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Wiring DiagramEBS00N8F
TBWA0089E
Page 1654 of 3833
EC-1304
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DTC P1805 BRAKE SWITCH
Diagnostic Procedure
EBS00N8G
1. CHECK STOP LAMP SWITCH CIRCUIT
1. Turn ignition switch “OFF”.
2. Check the stop lamp when depressing and releasing the brake pedal.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Disconnect stop lamp switch harness connector.
2. Check voltage between stop lamp switch terminal 1 and ground
with CONSULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. DETECT MALFUNCTIONING PART
Check the following.
●15A fuse
●Fuse block (J/B) connector M2
●Harness for open and short between stop lamp switch and battery
>> Repair open circuit or short to ground or short to power in harness or connectors.
Brake pedal Stop lamp
Fully released Not illuminated
Depressed Illuminated
PBIB0498E
Voltage: Battery voltage
PBIB0117E
Page 1655 of 3833
![NISSAN X-TRAIL 2001 Service Repair Manual DTC P1805 BRAKE SWITCH
EC-1305
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4.CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness NISSAN X-TRAIL 2001 Service Repair Manual DTC P1805 BRAKE SWITCH
EC-1305
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4.CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness](/manual-img/5/57405/w960_57405-1654.png)
DTC P1805 BRAKE SWITCH
EC-1305
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4.CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 40 and stop lamp switch terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors M61, M41
●Joint connector-2 (LHD models)
●Joint connector-3 (RHD models)
●Harness for open or short between ECM and stop lamp switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK STOP LAMP SWITCH
Refer to EC-1305, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace stop lamp switch.
7.CHECK INTERMITTENT INCIDENT
Refer to EC-1192, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS00N8H
STOP LAMP SWITCH
1. Disconnect stop lamp switch harness connector.Continuity should exist.
PBIB0498E
Page 1656 of 3833
EC-1306
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DTC P1805 BRAKE SWITCH
2. Check continuity between stop lamp switch terminals 1 and 2
under the following conditions.
3. If NG, replace stop lamp switch.
Conditions Continuity
Brake pedal fully released Should not exist.
Brake pedal depressed Should exist.
PBIB0118E