2001 NISSAN X-TRAIL engine control

LAN-18
[CAN]
CAN SYSTEM (FOR M/T MODELS)
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect steering wheel angle sensor connector and harness connector M75.
2. Check continuity between steering wheel angle sensor harness
connector M81 terminals 4 (W), 5 (R) and harness connector
M75 terminals 8 (W), 19 (R).
OK or NG
OK >> GO TO 3.
NG >> Repair harness.
3. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect 4WD control unit connector.
2. Check continuity between harness connector E116 terminals 8
(W), 19 (R) and 4WD control unit harness connector E122 termi-
nals 48 (W), 39 (R).
OK or NG
OK >> Reconnect all connectors to perform “SELF-DIAG
RESULTS” and “DATA MONITOR” for “ENGINE”, “ALL
MODE 4WD” and “ABS” displayed on CONSULT-II.
Refer to the following:
●EC-854, "DTC U1000 CAN COMMUNICATION LINE"
(QR20 WITH EURO-OBD) for “ENGINE”
●EC-1199, "DTC U1000 CAN COMMUNICATION LINE" (QR20 WITHOUT EURO-OBD) for
“ENGINE”
●EC-1448, "DTC U1000 CAN COMMUNICATION LINE" (YD) for “ENGINE”
●TF-53, "CAN COMMUNICATION SYSTEM" for “ALL MODE 4WD”
●BRC-110, "Inspection 15 CAN Communication Circuit, ESP/TCS/ABS Control Unit and Steer-
ing Wheel Angle Sensor" for “ABS”
NG >> Repair harness.
ECM Circuit CheckEKS002FQ
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Check following terminals and connector for damage, bend and loose connection (control module-side
and harness-side).
●ECM.
●Harness connector F41 (QR20DE engine models).
●Harness connector M61 (QR20DE engine models).
●Harness connector F29 (YD22DDTi engine models).
●Harness connector M64 (YD22DDTi engine models).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.4 (W) – 8 (W) : Continuity should exist.
5 (R) – 19 (R) : Continuity should exist.
SKIA0928E
8 (W) – 48 (W) : Continuity should exist.
19 (R) – 39 (R) : Continuity should exist.
SKIA0929E

CAN SYSTEM (FOR M/T MODELS)
LAN-19
[CAN]
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2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ECM connector.
2. Check the following.
●QR20DE engine models:
Resistance between ECM harness connector F43 terminals 33
(W) and 34 (R).
●YD22DDTi engine models:
Resistance between ECM harness connector F35 terminals E11
(W) and E10 (R).
OK or NG
OK >> Replace ECM.
NG >> Repair harness between harness connector M75 and
ECM.
4WD Control Unit Circuit CheckEKS002FR
1.CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Check the terminals and connector of 4WD control unit for damage, bend and loose connection (control
unit-side and harness-side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect 4WD control unit connector.
2. Check resistance between 4WD control unit harness connector
E122 terminals 48 (W) and 39 (R).
OK or NG
OK >> Replace 4WD control unit.
NG >> Repair harness between harness connector E119 and
4WD control unit. 33 (W) – 34 (R)
(QR20DE engine models) : Approx. 108 – 132Ω
SKIA0888E
E11 (W) – E10 (R)
(YD22DDTi engine models) : Approx. 108 – 132Ω
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48 (W) – 39 (R) : Approx. 54 – 66Ω
SKIA0930E

LAN-22
[CAN]
CAN SYSTEM (FOR M/T MODELS)
4. CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect 4WD control unit connector and harness connector E11 6 .
2. Check continuity between 4WD control unit harness connector
E122 terminals 48 (W) and 39 (R).
OK or NG
OK >> GO TO 5.
NG >>
●Repair harness between harness connector E116 and
harness connector E119.
●Repair harness between harness connector E116 and
4WD control unit.
5. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between 4WD control unit harness connector E122
terminals 48 (W), 39 (R) and ground.
OK or NG
OK >> GO TO 6.
NG >>
●Repair harness between harness connector E116 and
harness connector E119.
●Repair harness between harness connector E116 and
4WD control unit.
6. CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect steering wheel angle sensor connector and harness connector M61 (QR20DE engine models)
or harness connector M64 (YD22DDTi engine models).
2. Check continuity between steering wheel angle sensor harness
connector M81 terminals 4 (W) and 5 (R).
OK or NG
OK >> GO TO 7.
NG >>
●Repair harness between harness connector M75 and
harness connector M61 (QR20DE engine models).
●Repair harness between harness connector M75 and
harness connector M64 (YD22DDTi engine models).
●Repair harness between steering wheel angle sensor
and harness connector M75. 48 (W) – 39 (R) : Continuity should not exist.
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48 (W) – ground : Continuity should not exist.
39 (R) – ground : Continuity should not exist.
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4 (W) – 5 (R) : Continuity should not exist.
PKIA0281E

LAN-24
[CAN]
CAN SYSTEM (FOR M/T MODELS)
9. CHECK HARNESS FOR SHORT CIRCUIT
1. Check the following.
●QR20DE engine models:
Continuity between ECM harness connector F43 terminals 33
(W), 34 (R) and ground.
●YD22DDTi engine models:
Continuity between ECM harness connector F35 terminals E11
(W), E10 (R) and ground.
OK or NG
OK >> GO TO 10.
NG >>
●Repair harness between ECM and harness connector
F41 (QR20DE engine models).
●Repair harness between ECM and harness connector F29 (YD22DDTi engine models).
10. ECM / ESP/TCS/ABS CONTROL UNIT INTERNAL CIRCUIT INSPECTION
Check components inspection. Refer to LAN-25, "
ECM / ESP/TCS/ABS CONTROL UNIT INTERNAL CIR-
CUIT INSPECTION"
OK or NG
OK >> Reconnect all connectors to perform “SELF-DIAG RESULTS” and “DATA MONITOR” for
“ENGINE”, “ALL MODE 4WD” and “ABS” displayed on CONSULT-II. Refer to the following:
●EC-854, "DTC U1000 CAN COMMUNICATION LINE" (QR20 WITH EURO-OBD) for “ENGINE”
●EC-1199, "DTC U1000 CAN COMMUNICATION LINE" (QR20 WITHOUT EURO-OBD) for
“ENGINE”
●EC-1448, "DTC U1000 CAN COMMUNICATION LINE" (YD) for “ENGINE”
●TF-53, "CAN COMMUNICATION SYSTEM" for “ALL MODE 4WD”
●BRC-110, "Inspection 15 CAN Communication Circuit, ESP/TCS/ABS Control Unit and Steer-
ing Wheel Angle Sensor" for “ABS”
NG >> Replace ECM and/or ESP/TCS/ABS control unit.33 (W) – ground
(QR20DE engine models): Continuity should not
exist.
34 (R) – ground
(QR20DE engine models): Continuity should not
exist.
SKIA0889E
E11 (W) – ground
(YD22DDTi engine models): Continuity should not
exist.
E10 (R) – ground
(YD22DDTi engine models): Continuity should not
exist.
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CAN SYSTEM (FOR M/T MODELS)
LAN-25
[CAN]
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Component InspectionEKS002FW
ECM / ESP/TCS/ABS CONTROL UNIT INTERNAL CIRCUIT INSPECTION
●Remove ECM and ESP/TCS/ABS control unit from vehicle.
●Check resistance between ECM terminals 33 and 34 (QR20DE
engine models).
●Check resistance between ECM terminals E11 and E10
(YD22DDTi engine models).
●Check resistance between ESP/TCS/ABS control unit terminals
61 and 63.
Unit Terminal Resistance value (Ω)
ECM
(QR20DE engine models)33 – 34
Approx. 108 - 132 ECM
(YD22DDTi engine models)E11 – E10
ESP/TCS/ABS control unit 61 – 63
SKIA0933E

PG-1
POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
K ELECTRICAL
CONTENTS
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SECTION
A
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POWER SUPPLY, GROUND & CIRCUIT ELEMENTS
POWER SUPPLY ROUTING ...................................... 2
Schematic ................................................................ 2
Wiring Diagram — POWER — ................................. 3
BATTERY POWER SUPPLY — IGNITION SW.
IN ANY POSITION ................................................ 3
ACCESSORY POWER SUPPLY — IGNITION
SW. IN “ACC” OR “ON” ......................................... 7
IGNITION POWER SUPPLY — IGNITION SW.
IN “ON” AND/OR “START” .................................... 8
Fuse ....................................................................... 12
Fusible Link ............................................................ 12
Circuit Breaker ....................................................... 12
GROUND .................................................................. 13
Ground Distribution ................................................ 13
MAIN HARNESS/LHD MODELS ........................ 13
MAIN HARNESS/RHD MODELS ........................ 15
ENGINE ROOM HARNESS/LHD MODELS ....... 17
ENGINE ROOM HARNESS/RHD MODELS ....... 18
ENGINE ROOM HARNESS ................................ 19
ENGINE CONTROL HARNESS/QR25 ENGINE
MODELS ............................................................. 20
ENGINE CONTROL HARNESS/QR20 ENGINE
MODELS ............................................................. 21
ENGINE CONTROL HARNESS/DIESEL
ENGINE MODELS .............................................. 22
BODY HARNESS/LHD MODELS ....................... 23
BODY HARNESS/RHD MODELS ....................... 24
BODY NO.2 HARNESS/LHD MODELS .............. 25
BODY NO.2 HARNESS/RHD MODELS ............. 26
BODY NO.2 HARNESS ...................................... 27
BACK DOOR SUB HARNESS/REAR WINDOW
DEFOGGER HARNESS ..................................... 28
HARNESS ................................................................. 29
Harness Layout ...................................................... 29
HOW TO READ HARNESS LAYOUTS ............... 29
OUTLINE/LHD MODELS .................................... 30
OUTLINE/RHD MODELS .................................... 31
MAIN HARNESS/LHD MODELS ........................ 32MAIN HARNESS/RHD MODELS ........................ 34
ENGINE ROOM HARNESS/LHD MODELS ........ 36
ENGINE ROOM HARNESS/RHD MODELS ....... 41
ENGINE CONTROL HARNESS .......................... 46
BODY HARNESS/LHD MODELS ....................... 51
BODY HARNESS/RHD MODELS ....................... 52
BODY NO.2 HARNESS/LHD MODELS .............. 53
BODY NO.2 HARNESS/RHD MODELS .............. 54
ROOM LAMP HARNESS .................................... 55
FRONT DOOR HARNESS/LHD MODELS .......... 56
FRONT DOOR HARNESS/RHD MODELS ......... 57
REAR DOOR HARNESS .................................... 58
BACK DOOR HARNESS .................................... 59
Wiring Diagram Codes (Cell Codes) ...................... 60
ELECTRICAL UNITS LOCATION .........................
... 63
Electrical Units Location ......................................... 63
ENGINE COMPARTMENT .................................. 63
PASSENGER COMPARTMENT/LHD MODELS ... 64
PASSENGER COMPARTMENT/RHD MODELS ... 66
HARNESS CONNECTOR ......................................... 68
Description .............................................................. 68
HARNESS CONNECTOR (TAB-LOCKING
TYPE) .................................................................. 68
HARNESS CONNECTOR (SLIDE-LOCKING
TYPE) .................................................................. 69
JOINT CONNECTOR (J/C) ....................................... 70
Terminal Arrangement ............................................ 70
ELECTRICAL UNITS ................................................ 71
Terminal Arrangement ............................................ 71
STANDARDIZED RELAY .......................................... 72
Description .............................................................. 72
NORMAL OPEN, NORMAL CLOSED AND
MIXED TYPE RELAYS ........................................ 72
TYPE OF STANDARDIZED RELAYS ................. 72
FUSE BLOCK - JUNCTION BOX (J/B) .................... 74
Terminal Arrangement ............................................ 74
FUSE AND FUSIBLE LINK BOX .............................. 75
Terminal Arrangement ............................................ 75

PG-20
GROUND
ENGINE CONTROL HARNESS/QR25 ENGINE MODELS
CKIA0268E

GROUND
PG-21
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ENGINE CONTROL HARNESS/QR20 ENGINE MODELS
CKWA0050E