2001 NISSAN X-TRAIL check engine

EC-1274
[QR20(WITHOUT EURO-OBD)]
DTC P1121 ELECTRIC THROTTLE CONTROL ACTUATOR
Without CONSULT-II
1. Turn ignition switch “ON” and wait at least 1 second.
2. Shift selector lever to “D” position (A/T models), “1st” position (M/T models) and wait at least 2 seconds.
3. Turn ignition switch “OFF”, wait at least 10 seconds, and then turn “ON”.
4. Perform “Diagnostic Test Mode II (Self-diagnostic results)” with ECM.
5. If 1st trip DTC is detected, go to EC-1274, "
Diagnostic Procedure" .
PROCEDURE FOR MALFUNCTION C
With CONSULT-II
1. Turn ignition switch “ON” and wait at least 1 second.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Shift selector lever to “D” position (A/T), “1st” position (M/T) and
wait at least 2 seconds.
4. Shift selector lever to “N” or “P” position.
5. Start engine and let it idle for 3 seconds.
6. If 1st trip DTC is detected, go to EC-1274, "
Diagnostic Proce-
dure" .
Without CONSULT-II
1. Turn ignition switch “ON” and wait at least 1 second.
2. Shift selector lever to “D” position (A/T models), “1st” position (M/T models) and wait at least 2 seconds.
3. Shift selector lever to “N” or “P” position.
4. Start engine and let it idle for 3 seconds.
5. Turn ignition switch “OFF”, wait at least 10 seconds, and then turn “ON”.
6. Perform “Diagnostic Test Mode II (Self-diagnostic results)” with ECM.
7. If 1st trip DTC is detected, go to EC-1274, "
Diagnostic Procedure" .
Diagnostic ProcedureEBS00N7G
1. CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Remove the intake air duct.
2. Check if a foreign matter is caught between the throttle valve
and the housing.
OK or NG
OK >> GO TO 2.
NG >> Remove the foreign matter and clean the electric throttle
control actuator inside.
2. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace the electric throttle control actuator.
2. Perform EC-1136, "
Throttle Valve Closed Position Learning" .
3. Perform EC-1137, "
Idle Air Volume Learning" .
>>INSPECTION END
SEF058Y
PBIB0518E

EC-1278
[QR20(WITHOUT EURO-OBD)]
DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
Diagnostic Procedure
EBS00N7M
1. RETIGHTEN GROUND SCREWS
1. Turn ignition switch “OFF”.
2. Loosen and retighten engine ground screws.
>> GO TO 2.
2. CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect electric throttle control actuator harness connector.
3. Disconnect ECM harness connector.
4. Check harness continuity between the following terminals.
Refer to Wiring Diagram.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
3. CHECK THROTTLE CONTROL MOTOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Check harness continuity between ECM terminal 115 and engine ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to power in harness or connectors.
PBIB0494E
Electric throttle control
actuator terminalECM terminal Continuity
6114 Should exist
116 Should not exist
3114 Should not exist
116 Should exist
PBIB0497E
Continuity should exist.

DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-1279
[QR20(WITHOUT EURO-OBD)]
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EC
4.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Remove the intake air duct.
2. Check if foreign matter is caught between the throttle valve and
the housing.
OK or NG
OK >> GO TO 5.
NG >> Remove the foreign matter and clean the electric throttle
control actuator inside.
5.CHECK THROTTLE CONTROL MOTOR
Refer to EC-1280, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> GO TO 8.
6.CHECK THROTTLE CONTROL MOTOR SHIELD CIRCUIT FOR OPEN AND SHORT
1. Disconnect joint connector-4.
2. Check harness continuity between joint connector-4 terminal 1 and engine ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 7.
NG >> Repair open circuit or short to power in harness or connectors.
7.CHECK INTERMITTENT INCIDENT
Refer to EC-1192, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> GO TO 8.
NG >> Repair or replace harness or connectors.
8.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace the electric throttle control actuator.
2. Perform EC-1136, "
Throttle Valve Closed Position Learning" .
3. Perform EC-1137, "
Idle Air Volume Learning" .
>>INSPECTION END
PBIB0518E
Continuity should exist.

EC-1286
[QR20(WITHOUT EURO-OBD)]
DTC P1212 ESP/TCS/ABS COMMUNICATION LINE
DTC P1212 ESP/TCS/ABS COMMUNICATION LINE
PFP:47850
DescriptionEBS00N7W
NOTE:
If DTC P1212 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
EC-1199
.
This CAN communication line is used to control the smooth engine operation during ESP/TCS/ABS operation.
Pulse signals are exchanged between ECM and ESP/ABS/TCS control unit.
Be sure to erase the malfunction information such as DTC not only in ESP/TCS/ABS control unit but
also ECM after the ESP/TCS/ABS related repair.
On Board Diagnosis LogicEBS00N7X
The MI will not light up for this diagnosis.
Freeze frame data is not stored in the ECM for this self-diagnosis. The MI will not light up for this self-
diagnosis.
DTC Confirmation ProcedureEBS00N7Y
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10.5V at idle.
WITH CONSULT-II
1. Turn ignition switch “ON”.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for at least 10 seconds.
4. If a 1st trip DTC is detected, go to EC-1286, "
Diagnostic Proce-
dure" .
WITHOUT CONSULT-II
1. Start engine and let it idle for at least 10 seconds.
2. Turn ignition switch “OFF”, wait at least 10 seconds and then turn “ON”.
3. Perform “Diagnostic Test Mode II (Self-diagnostic results)” with ECM.
4. If 1st trip DTC is detected, go to EC-1286, "
Diagnostic Procedure" .
Diagnostic ProcedureEBS00N7Z
1. CHECK ESP/TCS/ABS CONTROL UNIT FUNCTION
Refer to BRC-64, "
TROUBLE DIAGNOSIS" .
>>INSPECTION END
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1212
1212ESP/TCS/ABS commu-
nication lineECM can not receive the information from
ESP/TCS/ABS control unit continuously.
●Harness or connectors
(The CAN communication line between
ECM and ESP/TCS/ABS control unit is
open or shorted.)
●ESP/TCS/ABS control unit
●Dead (Weak) battery
SEF058Y

DTC P1217 ENGINE OVER TEMPERATURE
EC-1289
[QR20(WITHOUT EURO-OBD)]
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EC
Overall Function CheckEBS00N84
Use this procedure to check the overall function of the cooling fan. During this check, a DTC might not be con-
firmed.
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could be caused by high pres-
sure fluid escaping from the radiator.
Wrap a thick cloth around cap. Carefully remove the cap by turning it a quarter turn to allow built-up
pressure to escape. Then turn the cap all the way off.
WITH CONSULT-II
1. Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go to EC-1292,
"Diagnostic Procedure" .
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to EC-1292,
"Diagnostic Procedure" .
3. Turn ignition switch “ON”.
4. Perform “COOLING FAN” in “ACTIVE TEST” mode with CON-
SULT-II.
5. If the results are NG, go to EC-1292, "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Check the coolant level in the reservoir tank and radiator.
Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go to EC-1292,
"Diagnostic Procedure" .
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to EC-1292,
"Diagnostic Procedure" .
3. Start engine.
Be careful not to overheat engine.
4. Set temperature control lever to full cold position.
5. Turn air conditioner switch “ON”.
6. Turn blower fan switch “ON”.
7. Run engine at idle for a few minutes with air conditioner operating.
Be careful not to overheat engine.
SEF621W
SEF646X
SEF621W

EC-1292
[QR20(WITHOUT EURO-OBD)]
DTC P1217 ENGINE OVER TEMPERATURE
Diagnostic Procedure
EBS00N86
1. INSPECTION START
Do you have CONSULT-II?
Ye s o r N o
Yes >> GO TO 2
No >> GO TO 4
2. CHECK COOLING FAN LOW SPEED OPERATION
With CONSULT-II
1. Disconnect cooling fan relays-2 and -3.
2. Turn ignition switch “ON”.
3. Perform “COOLING FAN” in “ACTIVE TEST” mode with CONSULT-II.
4. Make sure that cooling fans-1 and -2 operate at low speed.
OK or NG
OK >> GO TO 3.
NG >> Check cooling fan low speed control circuit. (Go to EC-332, "
PROCEDURE A" .)
PBIB0505E
SEF784Z

DTC P1217 ENGINE OVER TEMPERATURE
EC-1293
[QR20(WITHOUT EURO-OBD)]
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EC
3.CHECK COOLING FAN HIGH SPEED OPERATION
With CONSULT-II
1. Turn ignition switch “OFF”.
2. Reconnect cooling fan relays-2 and -3.
3. Turn ignition switch “ON”.
4. Perform “COOLING FAN” in “ACTIVE TEST” mode with CON-
SULT-II.
5. Make sure that cooling fans-1 and -2 operate at higher speed
than low speed.
OK or NG
OK >> GO TO 6.
NG >> Check cooling fan high speed control circuit. (Go to EC-
334, "PROCEDURE B" .)
4.CHECK COOLING FAN LOW SPEED OPERATION
Without CONSULT-II
1. Disconnect cooling fan relays-2 and -3.
2. Start engine and let it idle.
3. Set temperature lever at full cold position.
4. Turn air conditioner switch “ON”.
5. Turn blower fan switch “ON”.
6. Make sure that cooling fans-1 and -2 operate at low speed.
OK or NG
OK >> GO TO 5.
NG >> Check cooling fan low speed control circuit. (Go to EC-
332, "PROCEDURE A" .)
SEF785Z
PBIB0505E
SEC163BA

EC-1294
[QR20(WITHOUT EURO-OBD)]
DTC P1217 ENGINE OVER TEMPERATURE
5. CHECK COOLING FAN HIGH SPEED OPERATION
Without CONSULT-II
1. Turn ignition switch “OFF”.
2. Reconnect cooling fan relays-2 and -3.
3. Turn air conditioner switch and blower fan switch “OFF”.
4. Disconnect engine coolant temperature sensor harness connector.
5. Connect 150Ω resistor to engine coolant temperature sensor harness connector.
6. Restart engine and make sure that cooling fans-1 and -2 oper-
ate at higher speed than low speed.
OK or NG
OK >> GO TO 6.
NG >> Check cooling fan high speed control circuit. (Go to EC-
1298, "PROCEDURE B" .)
6. CHECK COOLING SYSTEM FOR LEAK
Apply pressure to the cooling system with a tester, and check if the
pressure drops.
CAUTION:
Higher than the specified pressure may cause radiator damage.
Pressure should not drop.
OK or NG
OK >> GO TO 7.
NG >> Check the following for leak
●Hose
●Radiator
●Water pump
Refer to CO-18, "
WATER PUMP" .
7. CHECK RADIATOR CAP
Apply pressure to cap with a tester.
OK or NG
OK >> GO TO 8.
NG >> Replace radiator cap.
MEC475B
Testing pressure: 157 kPa (1.57 bar, 1.6 kg/cm2 , 23 psi)
SLC754A
Radiator cap relief pressure: 59 - 98 kPa (0.59 - 0.98 bar,
0.6 - 1.0 kg/cm
2 , 9 - 14 psi)
SLC755A