2001 NISSAN X-TRAIL ignition

EC-1552
[YD]
EGR VOLUME CONTROL SYSTEM
ECM Terminals and Reference Value
EBS0035P
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
EGR VOL CON/V
●Engine: After warming up
●Air conditioner switch: OFF
●Shift lever: Neutral position
●No-loadAfter one minute at idle More than 10 steps
Revving engine from idle to 3,600
rpm0 step
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
A8
A9R
RPower supply for ECM[Ignition switch "ON"]BATTERY VOLTAGE
(11 - 14V)
B3
B4
B5
B6W
OR/B
W/L
GYEGR volume control valve[Engine is running]
●Warm-up condition
●Idle speed0.1 - 14V
(Voltage signals of each ECM ter-
minals differ according to the con-
trol position of EGR volume
control valve.)
D24
D26G
GECM relay (self-shutoff)[Ignition switch “ON”]
[Ignition switch “OFF”]
●For a few seconds after turning ignition
switch "OFF"Approximately 0V
[Ignition switch “OFF”]
●A few seconds passed after turning ignition
switch "OFF"BATTERY VOLTAGE
(11 - 14V)

EC-1554
[YD]
EGR VOLUME CONTROL SYSTEM
Diagnostic Procedure
EBS0035R
1. CHECK EGR VOLUME CONTROL SYSTEM OVERALL FUNCTION
1. Turn ignition switch “OFF”.
2. Set the oscilloscope probe between ECM terminals B3, B4, B5, B6 and ground.
3. Start engine and let it idle.
4. Check the oscilloscope screen when revving engine up to 3,200 rpm and return to idle.
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
2. CHECK EGR VOLUME CONTROL VALVE POWER SUPPLY CIRCUIT-I
1. Turn ignition switch “OFF”.
2. Disconnect EGR volume control valve harness connector.
3. Turn ignition switch “ON”.
4. Check voltage between EGR volume control valve terminals 2, 5
and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 7.
NG >> GO TO 3.The pulse signal as shown in the figure should appear.
PBIB0430E
PBIB0380E
Voltage: Battery voltage
PBIB0431E

EGR VOLUME CONTROL SYSTEM
EC-1555
[YD]
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EC
3.CHECK EGR VOLUME CONTROL VALVE POWER SUPPLY CIRCUIT-II
1. Turn ignition switch “OFF”.
2. Disconnect ECM relay.
3. Check harness continuity between ECM relay terminal 5 and
EGR volume control valve terminals 2, 5. 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 >> Repair open circuit or short to ground or short to power
in harness or connectors.
4.CHECK EGR VOLUME CONTROL VALVE POWER SUPPLY CIRCUIT-III
Check voltage between ECM relay terminal 3 and ground with CON-
SULT-II or tester.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors E63, F4
●10A fuse
●Harness for open or short between ECM relay and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK ECM RELAY
Refer to EC-1447, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace ECM relay.Continuity should exist.
PBIB0377E
Voltage: Battery voltage
PBIB0432E

EC-1556
[YD]
EGR VOLUME CONTROL SYSTEM
7. CHECK EGR VOLUME CONTROL VALVE OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminals and EGR volume control valve terminals as follows.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
8. CHECK EGR VOLUME CONTROL VALVE
Refer to EC-1556, "
Component Inspection" .
OK or NG
OK >> GO TO 9.
NG >> Replace EGR volume control valve.
9. CHECK INTERMITTENT INCIDENT
Refer to EC-1441, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS003Q0
EGR VOLUME CONTROL VALVE
With CONSULT-II
1. Disconnect EGR volume control valve harness connector.
ECM terminal EGR volume control valve terminal
B3 4
B4 3
B5 6
B6 1
Continuity should exist.
PBIB0380E

EGR VOLUME CONTROL SYSTEM
EC-1557
[YD]
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2. Check resistance between the following terminals.
●terminal 2 and terminals 1, 3
●terminal 5 and terminals 4, 6
If NG, replace EGR volume control valve.
If OK, go to next step.
3. Reconnect EGR volume control valve harness connector.
4. Remove EGR volume control valve from cylinder head.
(The EGR volume control valve harness connector should
remain connected.)
5. Turn ignition switch "ON".
6. Perform "EGR VOL CONT/V" in "ACTIVE TEST" mode with CONSULT-II. Check that EGR volume control
valve shaft moves smoothly forward and backward according to the valve opening.
If NG, replace the EGR volume control valve.
Removal and InstallationEBS008ZF
EGR VOLUME CONTROL VALVE
Refer to EM-127, "EXHAUST MANIFOLD AND TURBOCHARGER" .
Temperature °C (°F) Resistance Ω
20 (68) 13 - 17
SEF605Y
SEF819Y

EC-1558
[YD]
BRAKE SWITCH
BRAKE SWITCH
PFP:25230
DescriptionEBS009JW
The stop lamp switch is installed to brake pedal bracket. The switch
senses brake pedal position and sends an ON-OFF signal to the
ECM. The ECM uses the signal to control the fuel injection control
system.
ECM Terminals and Reference ValueEBS009JX
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.
PBIB0379E
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
D25 R/G Stop lamp switch[Ignition switch “ON”]
●Brake pedal fully releasedApproximately 0V
[Ignition switch “ON”]
●Brake pedal depressedBATTERY VOLTAGE
(11 - 14V)

EC-1560
[YD]
BRAKE SWITCH
Diagnostic Procedure
EBS009K1
1. CHECK OVERALL FUNCTION
With CONSULT-II
1. Turn ignition switch "ON".
2. Select "BRAKE SW" in "DATA MONITOR" mode with CON-
SULT-II.
3. Check "BRAKE SW" signal under the following conditions.
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
2. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch "OFF".
2. Disconnect stop lamp switch harness connector.
3. Check voltage between stop lamp switch terminal 1 and ground
with CONSULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. DETECT MALFUNCTION PART
Check the following
●15A fuse
●Fuse block (J/B) connector M2
●Harness for open and short between stop lamp switch and battery
>> Repair open circuit or short to ground or short to power in harness or connectors.
Conditions BRAKE SW
Brake pedal released OFF
Brake pedal slightly depressed ON
PBIB0472E
PBIB0379E
Voltage: Battery voltage
PBIB0117E

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