2005 NISSAN X-TRAIL ignition

DTC P0686 ECM RELAY
EC-1245
[YD (WITH EURO-OBD)]
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DTC P0686 ECM RELAYPFP:25230
On Board Diagnosis LogicEBS011CV
This self-diagnosis has the one trip detection logic.
The MI will not light up for this self-diagnosis.
DTC Confirmation ProcedureEBS011CW
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON and then turn OFF.
2. Wait at least 30 seconds.
3. Turn ignition switch ON.
4. Select “DATA MONITOR” mode with CONSULT-II.
5. If DTC is detected, go to EC-1247, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0686
0686ECM relay circuitECM detects ECM relay is stuck closed even if
ignition switch OFF.

Harness or connectors
(The ECM relay circuit is shorted.)

ECM relay
SEF817Y

DTC P0686 ECM RELAY
EC-1247
[YD (WITH EURO-OBD)]
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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.
Diagnostic ProcedureEBS011CY
1. CHECK ECM OUTPUT SIGNAL CIRCUIT FOR SHORT TO GROUND
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminals 105, 113 and ground.
Refer to Wiring Diagram.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors F30, M63

Harness for open or short between ECM and ECM relay
>> Repair open circuit or short to ground or short to power in harness or connectors.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage)
105 G ECM relay (self-shutoff)[Ignition switch ON]
[Ignition switch OFF]

For a few seconds after turning ignition
switch OFFApproximately 1.2V
[Ignition switch OFF]

More than a few seconds after turning igni-
tion switch OFFBATTERY VOLTAGE
(11 - 14V)
113 G ECM relay (self-shutoff)[Ignition switch ON]
[Ignition switch OFF]

For a few seconds after turning ignition
switch OFFApproximately 1.2V
[Ignition switch OFF]

More than a few seconds after turning igni-
tion switch OFFBATTERY VOLTAGE
(11 - 14V)
11 9
120Y
RPower supply for ECM[Ignition switch ON]BATTERY VOLTAGE
(11 - 14V)
Continuity should not exist.

DTC P1211 TCS CONTROL UNIT
EC-1249
[YD (WITH EURO-OBD)]
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DTC P1211 TCS CONTROL UNITPFP:47850
DescriptionEBS011D0
The malfunction information related to TCS is transferred through the CAN communication line from ESP/
TCS/ABS control unit to ECM.
Be sure to erase the malfunction information such as DTC not only for ESP/TCS/ABS control unit but
also for ECM after TCS related repair.
On Board Diagnosis LogicEBS011D1
This self-diagnosis has the one trip detection logic.
MI will not light up for this self-diagnosis.
DTC Confirmation ProcedureEBS011D2
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If DTC is detected, go to EC-1249, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSLT-II” above.
Diagnostic ProcedureEBS011D3
Go to BRC-60, "TROUBLE DIAGNOSIS" (models with ESP system) or BRC-12, "TROUBLE DIAGNOSIS"
(model without ESP system).
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1211
1211TCS control unitECM receives a malfunction information from
ESP/TCS/ABS control unit.

ESP/TCS/ABS control unit

TCS related parts
SEF817Y

EC-1250
[YD (WITH EURO-OBD)]
DTC P1212 TCS COMMUNICATION LINE

DTC P1212 TCS COMMUNICATION LINEPFP:47850
DescriptionEBS011D4
This CAN communication line is used to control the smooth engine operation during the TCS operation. Pulse
signals are exchanged between ECM and ESP/TCS/ABS control unit.
NOTE:

If DTC P1212 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000.
Refer to EC-1056, "
DTC U1000 CAN COMMUNICATION LINE" .

Be sure to erase the malfunction information such as DTC not only for ESP/TCS/ABS control unit
but also for ECM after TCS related repair.
On Board Diagnosis LogicEBS011D5
This self-diagnosis has the one trip detection logic.
MI will not light up for this self-diagnosis.
DTC Confirmation ProcedureEBS011D6
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If DTC is detected, go to EC-1250, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
Diagnostic ProcedureEBS011D7
Go to BRC-60, "TROUBLE DIAGNOSIS" (models with ESP system) or BRC-12, "TROUBLE DIAGNOSIS"
(model without ESP system).
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1212
1212TCS communication lineECM can not receive the information from ESP/
TCS/ABS control unit continuously.

Harness or connectors
(The CAN communication line is
open or shorted.)

ESP/TCS/ABS control unit

Dead (Weak) battery
SEF817Y

EC-1252
[YD (WITH EURO-OBD)]
DTC P1260 - P1267 FUEL INJECTOR ADJUSTMENT RESISTOR

DTC Confirmation ProcedureEBS011DB
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If 1st trip DTC is detected, go to EC-1254, "
Diagnostic Proce-
dure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
SEF817Y

EC-1254
[YD (WITH EURO-OBD)]
DTC P1260 - P1267 FUEL INJECTOR ADJUSTMENT RESISTOR

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.
Diagnostic ProcedureEBS011DD
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body. Refer to EC-1055, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage)
59
60
61
62W/B
Y/B
G/B
R/BFuel injector adjustment
resistor No. 1
Fuel injector adjustment
resistor No. 3
Fuel injector adjustment
resistor No. 4
Fuel injector adjustment
resistor No. 2[Ignition switch ON]0.5 - 5.1V
(There are individual differences
between fuel injector adjustment
resistors.)
78 RFuel injector adjustment
resistor ground[Engine is running]

Warm-up condition

Idle speedApproximately 0.3V
PBIB2020E

DTC P1260 - P1267 FUEL INJECTOR ADJUSTMENT RESISTOR
EC-1255
[YD (WITH EURO-OBD)]
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2. CHECK FUEL INJECTOR ADJUSTMENT RESISTOR POWER SUPPLY CIRCUIT
1. Disconnect fuel injector harness connector of malfunctioning
cylinder.
2. Turn ignition switch ON.
3. Check voltage between fuel injector terminal 2 and ground with
CONSULT-II or tester.
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 FUEL INJECTOR ADJUSTMENT RESISTOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between fuel injector terminal 1 and ECM terminal 78.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK FUEL INJECTOR ADJUSTMENT RESISTOR
Refer to EC-1255, "
Component Inspection" .
OK or NG
OK >> GO TO 5.
NG >> Replace fuel injector.
5. CHECK INTERMITTENT INCIDENT
Refer to EC-1045, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS011DE
FUEL INJECTOR ADJUSTMENT RESISTOR
1. Disconnect fuel injector harness connector.
PBIB1896E
Voltage: Approximately 5.3V
MBIB0186E
Continuity should exist.

EC-1258
[YD (WITH EURO-OBD)]
DTC P1268 - P1271 FUEL INJECTOR

DTC Confirmation ProcedureEBS011DK
CAUTION:
Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws when driv-
ing.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON, and select “DATA MONITOR” mode
with CONSULT-II.
2. Restart engine and let it idle for about 15 minutes.
3. If DTC is detected, go to EC-1261, "
Diagnostic Procedure" .
If DTC is not detected, go to next step.
4. Drive vehicle and maintain the following conditions for at least
60 seconds.
5. If DTC is detected, go to EC-1261, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
CKPS·RPM 700 - 2000 rpm (A constant rotation is maintained)
COOLAN TEMP/S Less than 75°C (167°F)
Shift lever Suitable position
Accelerator pedal Hold the accelerator pedal as steady as possible.
PBIB2156E