NISSAN X-TRAIL 2001 Service Repair Manual

DTC P0605 ECM
EC-261
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2. Select “DATA MONITOR” mode with CONSULT-II.
3. Turn ignition switch “OFF”, wait at least 10 seconds, and then
turn “ON”.
4. If 1st trip DTC is detected, go to EC-261, "
Diagnostic Procedure"
.
With GST
Follow the procedure “With CONSULT-II” above.
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. Turn ignition switch “OFF”, wait at least 10 seconds, and then
turn “ON”.
4. Repeat step 3 for 32 times.
5. If 1st trip DTC is detected, go to EC-261, "
Diagnostic Procedure"
.
With GST
Follow the procedure “With CONSULT-II” above.
Diagnostic ProcedureEBS00M6P
1.INSPECTION START
With CONSULT-II
1. Turn ignition switch “ON”.
2. Select “SELF DIAG RESULTS” mode with CONSULT-II.
3. Touch “ERASE”.
4.Perform “DTC Confirmation Procedure”.
See EC-260
.
5. Is the 1st trip DTC P0605 displayed again?
With GST
1. Turn ignition switch “ON”.
2. Select MODE 4 with GST.
3. Touch “ERASE”.
4.Perform “DTC Confirmation Procedure”.
See EC-260
.
5. Is the 1st trip DTC P0605 displayed again?
Ye s o r N o
Ye s > > G O T O 2 .
No >>INSPECTION END
SEF058Y
SEF058Y

EC-262
[QR25(WITH EURO-OBD)]
DTC P0605 ECM
2. REPLACE ECM
1. Replace ECM.
2. Perform initialization of NATS system and registration of all NATS ignition key IDs. Refer to EC-58, "
NATS
(Nissan Anti-theft System)" .
3. Perform EC-39, "
Accelerator Pedal Released Position Learning" .
4. Perform EC-39, "
Throttle Valve Closed Position Learning" .
5. Perform EC-39, "
Idle Air Volume Learning" .
>>INSPECTION END

DTC P0650 MI
EC-263
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DTC P0650 MIPFP:24810
Component DescriptionEBS00M6Q
Malfunction Indicator (MI) is located on the instrument panel. When the ignition switch is turned ON without
engine running, MI will light up. This is a bulb check. When the engine is started, MI should go off. If MI
remains on, the on board diagnostic system has detected an engine system malfunction.
On Board Diagnosis LogicEBS00M6R
FAIL-SAFE MODE
ECM enters fail-safe mode when both DTC P0650 and another DTC, which calls for MI to light up, are
detected at the same time.
DTC Confirmation ProcedureEBS00M6S
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 wait at least 1 second.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If 1st trip DTC is detected, go to EC-265, "
Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0650
0650Malfunction indicator
(MI) control circuit
●An excessively high voltage is sent to ECM
through the MI circuit under the condition
that calls for MI light up.
●An excessively low voltage is sent to ECM
through the MI circuit under the condition
that calls for MI not to light up.
●Harness or connectors
(MI circuit is open or shorted.)
●MI
Detected items Engine operating condition in fail-safe mode
MI circuit Engine speed will not rise more than 2,500 rpm due to the fuel cut
SEF058Y

EC-264
[QR25(WITH EURO-OBD)]
DTC P0650 MI
Wiring Diagram
EBS00M6T
TBWA0130E

DTC P0650 MI
EC-265
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Diagnostic ProcedureEBS00M6U
1.CHECK MI POWER SUPPLY
1. Turn ignition switch “OFF”.
2. Disconnect combination meter harness connector.
3. Turn ignition switch “ON”.
4. Check voltage between combination meter terminal 46 (LHD
models), 59 (RHD models) and ground with CONSULT-II or
tester
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2.DETECT MALFUNCTIONING PART
Check the following.
●Fuse block (J/B) connector M1
●10A fuse
●Harness for open or short between fuse block (J/B) and combination meter
>> Repair harness or connectors.
3.CHECK MI OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 18 and combination meter terminal 62 (LHD models), 52
(RHD models). Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4.DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors M61, F41
●Harness for open or short between ECM and combination meter
>> Repair open circuit or short to ground or short to power in harness or connectors. Voltage: Battery voltage
PBIB0571E
Continuity should exist.

EC-266
[QR25(WITH EURO-OBD)]
DTC P0650 MI
5. CHECK COMBINATION METER
1. Turn ignition switch “OFF”.
2. Disconnect combination meter harness connector.
3. Check continuity under the following conditions.
OK or NG
OK >> GO TO 6.
NG >> Replace combination meter. Refer to DI-23, "
Removal and Installation for Combination Meter"
(LHD models), DI-42, "Removal and Installation for Combination Meter" (RHD models).
6. CHECK INTERMITTENT INCIDENT
Refer to EC-115, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
CONDITION MODEL Terminal No. (Polarity) Continuity
1LHD 62 (+) - 46 (–)
Should exist.
RHD 52 (+) - 59 (–)
2LHD 46 (+) - 62 (–)
Should not exist.
RHD 59 (+) - 52 (–)
PBIB0572E

DTC P1065 ECM POWER SUPPLY
EC-267
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DTC P1065 ECM POWER SUPPLYPFP:23710
Component DescriptionEBS00M6V
Battery voltage is supplied to the ECM even when the ignition switch
is turned OFF for the ECM memory function of the DTC memory, the
air-fuel ratio feedback compensation value memory, the idle air vol-
ume learning value memory, etc.
On Board Diagnosis LogicEBS00M6W
DTC Confirmation ProcedureEBS00M6X
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 wait at least 1 second.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. Turn ignition switch “OFF”, wait at least 10 seconds, and then
turn “ON”.
5. Repeat steps 3 and 4 four times.
6. If 1st trip DTC is detected, go to EC-269, "
Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
SEF093X
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1065
1065ECM power supply cir-
cuitECM back-up RAM system does not function
properly.
●Harness or connectors
[ECM power supply (back-up) circuit is
open or shorted.]
●ECM
SEF058Y

EC-268
[QR25(WITH EURO-OBD)]
DTC P1065 ECM POWER SUPPLY
Wiring Diagram
EBS00M6Y
TBWA0129E

DTC P1065 ECM POWER SUPPLY
EC-269
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Diagnostic ProcedureEBS00M6Z
1.CHECK ECM POWER SUPPLY
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Check voltage between ECM terminal 66 and ground with CON-
SULT-II or tester.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2.DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors E60, F36
●10A fuse
●Harness for open or short between ECM and battery
>> Repair or replace harness or connectors.
3.CHECK INTERMITTENT INCIDENT
Refer to EC-115, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness or connectors.
4.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-II
1. Turn ignition switch “ON”.
2. Select “SELF DIAG RESULTS” mode with CONSULT-II.
3. Touch “ERASE”.
4.Perform “DTC Confirmation Procedure”.
See EC-267
.
5. Is the 1st trip DTC P1065 displayed again?
With GST
1. Turn ignition switch “ON”.
2. Select MODE 4 with GST.
3. Touch “ERASE”.
4.Perform “DTC Confirmation Procedure”.
See EC-267
.
5. Is the 1st trip DTC P1065 displayed again?
Ye s o r N o
Ye s > > G O T O 5 .
No >>INSPECTION END Voltage: Battery voltage
PBIB0573E

EC-270
[QR25(WITH EURO-OBD)]
DTC P1065 ECM POWER SUPPLY
5. REPLACE ECM
1. Replace ECM.
2. Perform initialization of NATS system and registration of all NATS ignition key IDs. Refer to EC-58, "
NATS
(Nissan Anti-theft System)" .
3. Perform EC-39, "
Throttle Valve Closed Position Learning" .
4. Perform EC-39, "
Idle Air Volume Learning" .
>>INSPECTION END