NISSAN X-TRAIL 2001 Service Repair Manual

BRAKE SWITCH
EC-1561
[YD]
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4.CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch "OFF".
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal D25 and stop lamp switch terminal 2. Refer to Wiring
Diagram.
4. 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 F30, M63
●Joint connector-2 M49 (LHD models)
●Joint connector-3 M72 (RHD models)
●Harness for open and short between stop lamp switch and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK STOP LAMP SWITCH
Refer to EC-1561, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Replace stop lamp switch.
7.CHECK INTERMITTENT INCIDENT
Refer to EC-1441, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS009L1
STOP LAMP SWITCH
Check continuity between stop lamp switch terminals 1 and 2 under
the following conditions.Continuity should exist.
Conditions Continuity
Brake pedal fully released Should not exist.
Brake pedal depressed Should exist.
PBIB0118E

EC-1562
[YD]
PARK/NEUTRAL POSITION (PNP) SWITCH
PARK/NEUTRAL POSITION (PNP) SWITCH
PFP:31918
DescriptionEBS009K2
When the gear position is in “Neutral”, neutral position is “ON”. ECM detects the position because the continu-
ity of the line (the “ON” signal) exists.
CONSULT-II Reference Value in Data Monitor ModeEBS009K3
Specification data are reference values.
ECM Terminals and Reference ValueEBS009K4
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.
MONITOR ITEM CONDITION SPECIFICATION
P/N POSI SW
●Ignition switch: ONShift lever: Neutral ON
Except above OFF
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
E13 G/ORPark/Neutral position
switch[Ignition switch “ON”]
●Gear position is “Neutral”Approximately 0V
[Ignition switch “ON”]
●Except the above gear positionBATTERY VOLTAGE
(11 - 14V)

PARK/NEUTRAL POSITION (PNP) SWITCH
EC-1563
[YD]
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Wiring DiagramEBS009K5
TBWA0113E

EC-1564
[YD]
PARK/NEUTRAL POSITION (PNP) SWITCH
Diagnostic Procedure
EBS009K6
1. CHECK OVERALL FUNCTION
With CONSULT-II
1. Turn ignition switch “ON”.
2. Select “P/N POSI SW” in “DATA MONITOR” mode with CON-
SULT-II.
3. Check “P/N POSI SW” signal under the following conditions.
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
2. CHECK PNP SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect park/neutral position (PNP) switch harness connec-
tor.
3. Check harness continuity between PNP switch terminal 2 and
body ground. Refer to Wiring Diagram.
4. Also check harness for short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to power in harness or con-
nectors.
3. CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal E13 and PNP switch terminal 1. Refer to Wiring Dia-
gram.
3. 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 PARK/NEUTRAL POSITION SWITCH
Refer to MT-12, "
POSITION SWITCH" .
OK or NG
OK >> GO TO 5.
NG >> Replace park/neutral position switch.
Shift lever position P/N POSI SW
Neutral position ON
Except the above position OFF
SEF212Y
Continuity should exist.
PBIB0370E
Continuity should exist.

PARK/NEUTRAL POSITION (PNP) SWITCH
EC-1565
[YD]
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5.CHECK INTERMITTENT INCIDENT
Refer to EC-1441, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END

EC-1566
[YD]
START SIGNAL
START SIGNAL
PFP:48750
Wiring DiagramEBS0035S
TBWA0110E

START SIGNAL
EC-1567
[YD]
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EC
Diagnostic ProcedureEBS0035T
1.CHECK START SIGNAL OVERALL FUNCTION
With CONSULT-II
1. Turn ignition switch “ON”.
2. Check “START SIGNAL” in “DATA MONITOR” mode with CON-
SULT-II under the following conditions.
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
2.CHECK START SIGNAL INPUT SIGNAL CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector and ignition switch harness connector.
3. Check harness continuity between ECM terminal D27 and ignition switch terminal 6. Refer to Wiring Dia-
gram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3.DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors M63, F30
●10A fuse
●Fuse block (J/B) connectors M1, E102
●Harness for open or short between ECM and ignition switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK INTERMITTENT INCIDENT
Refer to EC-1441, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Condition "START SIGNAL"
Ignition switch "ON" OFF
Ignition switch "START" ON
PBIB0433E
Continuity should exist.

EC-1568
[YD]
POWER STEERING OIL PRESSURE SWITCH
POWER STEERING OIL PRESSURE SWITCH
PFP:49761
Component DescriptionEBS003PS
The power steering oil pressure switch is attached to the power
steering high-pressure tube and detects a power steering load.
When a power steering load is detected, it signals the ECM. The
ECM adjusts the fuel injector pulse width to increase the idle speed
and adjust for the increased load.
CONSULT-II Reference Value in Data Monitor ModeEBS003PT
Specification data are reference values.
ECM Terminals and Reference ValueEBS003PZ
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.
PBIB0375E
MONITOR ITEM CONDITION SPECIFICATION
PW/ST SIGNAL
●Engine: After warming up, idle the
engineSteering wheel is in neutral position.
(Forward direction)OFF
Steering wheel is turned. ON
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
E12 P/BPower steering oil pressure
switch[Engine is running]
●Steering wheel is being turnedApproximately 0V
[Engine is running]
●Steering wheel is not being turnedBATTERY VOLTAGE
(11 - 14V)

POWER STEERING OIL PRESSURE SWITCH
EC-1569
[YD]
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Wiring DiagramEBS003PU
TBWA0115E

EC-1570
[YD]
POWER STEERING OIL PRESSURE SWITCH
Diagnostic Procedure
EBS003PV
1. CHECK OVERALL FUNCTION
With CONSULT-II
1. Start engine.
2. Check “PW/ST SIGNAL” in “DATA MONITOR” mode with CON-
SULT-II under the following conditions.
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
2. CHECK POWER STEERING OIL PRESSURE SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect power steering oil pressure switch harness connec-
tor.
3. Check harness continuity between power steering oil pressure
switch terminal 2 and engine ground. Refer to Wiring Diagram.
4. Also check harness for short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to power in harness or con-
nectors.
3. CHECK POWER STEERING OIL PRESSURE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND
SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal E12 and power steering oil pressure switch terminal 1.
Refer to Wiring Diagram.
3. 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 POWER STEERING OIL PRESSURE SWITCH
Refer to EC-1571, "
Component Inspection" .
OK or NG
OK >> GO TO 5.
NG >> Replace power steering oil pressure switch.
Conditions PW/ST SIGNAL
Steering in neutral position OFF
Steering is turned ON
PBIB0434E
Continuity should exist.
PBIB0375E
Continuity should exist.