NISSAN X-TRAIL 2005 Service Repair Manual

DTC P0504 ASCD BRAKE SWITCH
EC-1207
[YD (WITH EURO-OBD)]
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DTC confirmation ProcedureEBS01FCD
CAUTION:
Always drive vehicle at a safe speed.
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.
TESTING CONDITION:
Steps 3 and 4 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a
road test is expected to be easier, it is unnecessary to lift the vehicle.
WITH CONSULT-II
1. Start engine (ESP switch OFF).
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Drive the vehicle for at least 5 consecutive seconds under the
following condition.
If DTC is detected, go to EC-1209, "
Diagnostic Procedure" .
If DTC is not detected, go to the following step.
4. Drive the vehicle for at least 5 consecutive seconds under the
following condition.
5. If DTC is detected, go to EC-1209, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
VHCL SPEED SE More than 5 km/h (3 MPH)
Selector lever Suitable position
VHCL SPEED SE More than 5 km/h (3 MPH)
Selector lever Suitable position
Driving locationDepress the brake pedal for more than
five seconds so as not to come off from
the above-mentioned condition.
MBIB1085E

EC-1208
[YD (WITH EURO-OBD)]
DTC P0504 ASCD BRAKE SWITCH

Wiring Diagram EBS01FCE
TBWB0477E

DTC P0504 ASCD BRAKE SWITCH
EC-1209
[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 ProcedureEBS01FCO
1. CHECK OVERALL FUNCTION-I
With CONSULT-II
1. Turn ignition switch ON.
2. Select “BRAKE SW” in “DATA MONITOR” mode with CON-
SULT-II.
3. Check “BRAKE SW” indication under the following conditions.
Without CONSULT-II
Check voltage between ECM terminal 100 and ground under the fol-
lowing conditions.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
100 P Stop lamp switch[Ignition switch OFF]

Brake pedal: Fully releasedApproximately 0V
[Ignition switch OFF]

Brake pedal: Slightly depressedBATTERY VOLTAGE
(11 - 14V)
101 GY/L ASCD brake switch[Ignition switch ON]

Brake pedal and clutch pedal: Fully releasedBATTERY VOLTAGE
(11 - 14V)
[Ignition switch ON]

Brake pedal and/or clutch pedal: Slightly
depressedApproximately 0V
CONDITION INDICATION
When brake pedal is slightly depressed ON
When brake pedal is fully released OFF
PBIB0472E
Condition Voltage
When brake pedal is slightly depressed battery voltage
When brake pedal is fully released Approximately 0V
MBIB1097E

EC-1210
[YD (WITH EURO-OBD)]
DTC P0504 ASCD BRAKE SWITCH

2. CHECK OVERALL FUNCTION-II
With CONSULT-II
Check “BRAKE SW2” indication in “DATA MONITOR” mode.
Without CONSULT-II
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 101 and ground under the
following conditions.
OK or NG
OK >> GO TO 14.
NG >> GO TO 7.
CONDITION INDICATION
When brake pedal and/or clutch pedal is fully depressed ON
When brake pedal and clutch pedal are slightly released OFF
SEC013D
Condition Voltage
When brake pedal and/or clutch pedal is slightly depressed Approximately 0V
When brake pedal and clutch pedal are fully released Battery voltage
PBIB1677E

DTC P0504 ASCD BRAKE SWITCH
EC-1211
[YD (WITH EURO-OBD)]
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3. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector (1).
–ASCD brake switch harness connector (2)
–ASCD clutch switch harness connector (3)
3. Check voltage between stop lamp switch terminal 1 and ground
with CONSULT -II or tester.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING PART
Check the following.

Fuse block (J/B) connector M2

15A fuse

Harness for open or short between stop lamp switch and battery
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 100 and stop lamp switch terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
6. CHECK STOP LAMP SWITCH
Refer to EC-1213, "
Component Inspection"
OK or NG
OK >> GO TO 14.
NG >> Replace stop lamp switch.
PBIB2878E
Voltage: Battery voltage
PBIB0117E
Continuity should exist.

EC-1212
[YD (WITH EURO-OBD)]
DTC P0504 ASCD BRAKE SWITCH

7. CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch (2) harness connector.
–Stop lamp switch (1)
–ASCD clutch switch (3)
3. Turn ignition switch ON.
4. Check voltage between ASCD brake switch terminal 1 and
ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 12.
NG >> GO TO 8.
8. CHECK ASCD CLUTCH SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ASCD clutch switch harness connector (3).
–Stop lamp switch harness connector (1)
–ASCD brake switch harness connector (2)
3. Turn ignition switch ON.
4. Check voltage between ASCD clutch switch terminal 1 and
ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 10.
NG >> GO TO 9.
PBIB2878E
Voltage: Battery voltage
PBIB0857E
PBIB2878E
Voltage: Battery voltage
PBIB0799E

DTC P0504 ASCD BRAKE SWITCH
EC-1213
[YD (WITH EURO-OBD)]
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9. DETECT MALFUNCTIONING PART
Check the following.

Fuse block (J/B) connector M2

10A fuse

Harness for open or short between ASCD clutch switch and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
10. CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between ASCD clutch switch terminal 2 and ASCD brake 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 11.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
11 . CHECK ASCD CLUTCH SWITCH
Refer to EC-1213, "
Component Inspection"
OK or NG
OK >> GO TO 14.
NG >> Replace ASCD clutch switch.
12. CHECK ASCD BRAKE 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 101 and ASCD brake 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 13.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
13. CHECK ASCD BRAKE SWITCH
Refer to EC-1213, "
Component Inspection"
OK or NG
OK >> GO TO 14.
NG >> Replace ASCD brake switch.
14. CHECK INTERMITTENT INCIDENT
Refer to EC-1045, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS01FCP
ASCD BRAKE SWITCH
1. Turn ignition switch OFF.Continuity should exist.
Continuity should exist.

EC-1214
[YD (WITH EURO-OBD)]
DTC P0504 ASCD BRAKE SWITCH

2. Disconnect ASCD brake switch harness connector.
3. Check continuity between ASCD brake switch terminals 1 and 2
under the following conditions.
If NG, adjust ASCD brake switch installation, refer to BR-6,
"BRAKE PEDAL" , and perform step 3 again.
ASCD CLUTCH SWITCH
1. Turn ignition switch OFF.
2. Disconnect ASCD clutch switch harness connector.
3. Check harness continuity between ASCD clutch switch terminals 1 and 2 under the following conditions.
If NG, adjust ASCD clutch switch installation, refer to CL-5,
"CLUTCH PEDAL" , and perform step 3 again.
STOP LAMP SWITCH
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check harness continuity between stop lamp switch terminals 1
and 2 under the following conditions.
If NG, adjust stop lamp switch installation, refer to BR-6,
"BRAKE PEDAL" , and perform step 3 again.
Condition Continuity
When brake pedal is fully released. Should exist.
When brake pedal is slightly depressed. Should not exist.
SEC023D
Condition Continuity
When clutch pedal is fully released. Should exist.
When clutch pedal is slightly depressed. Should not exist.
SEC024D
Condition Continuity
When brake pedal is fully released. Should not exist.
When brake pedal is slightly depressed. Should exist.
PBIB0118E

DTC P0563 BATTERY VOLTAGE
EC-1215
[YD (WITH EURO-OBD)]
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DTC P0563 BATTERY VOLTAGEPFP:24410
On Board Diagnosis LogicEBS011BS
This self-diagnosis has the one trip detection logic.
MI will not light up for this self-diagnosis.
DTC Confirmation ProcedureEBS011BT
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. Start engine and let it idle for at least 35 seconds.
4. If DTC is detected, go to EC-1215, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
Diagnostic ProcedureEBS011BU
1. INSPECTION START
Are jumper cables connected for the jump starting?
Ye s o r N o
Ye s > > G O T O 3 .
No >> GO TO 2.
2. CHECK BATTERY AND ALTERNATOR
Check that the proper type of battery and alternator is installed.
Refer to, SC-4, "
BATTERY" and SC-13, "CHARGING SYSTEM" .
OK or NG
OK >> GO TO 5.
NG >> Replace with a proper one.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0563
0563Battery voltage highAn excessively high voltage from the battery is
sent to ECM.

Battery

Battery terminal

Alternator
SEF817Y

EC-1216
[YD (WITH EURO-OBD)]
DTC P0563 BATTERY VOLTAGE

3. CHECK JUMPER CABLES INSTALLATION
Check that the jumper cables are connected in the correct sequence.
OK or NG
OK >> GO TO 4.
NG >> Reconnect jumper cables properly.
4. CHECK BATTERY FOR BOOSTER
Check that the battery for the booster is a 12V battery.
OK or NG
OK >> GO TO 5.
NG >> Change the vehicle for booster.
5. PERFORM DTC CONFIRMATION PROCEDURE AGAIN
With CONSULT-II
1. Select “SELF DIAG RESULTS” mode with CONSULT-II.
2. Touch “ERASE”.
3. Perform EC-1215, "
DTC Confirmation Procedure" , again.
4. Is DTC P0563 displayed again?
Without CONSULT-II
1. Erase the Diagnostic Test Mode II (Self-diagnostic results) memory. Refer to EC-1003
.
2. Perform EC-1215, "
DTC Confirmation Procedure" , again.
3. Is DTC 0563 displayed again?
Ye s o r N o
Yes >> GO TO 6.
No >> GO TO 7.
6. REPLACE ECM
1. Replace ECM.
2. Perform initialization of NATS system and registration of all NATS ignition key IDs. Refer to EC-1001,
"NATS (Nissan Anti-theft System)" .
3. Perform Fuel Pump Learning Value Clearing. Refer to EC-994, "
Fuel Pump Learning Value Clearing" .
>>INSPECTION END
SEF439Z