Nissan Pathfinder (2005 year). Instruction — part 231
ASCD BRAKE SWITCH
EC-699
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EC
2005 Pathfinder
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 Procedure
UBS00KIS
1.
CHECK OVERALL FUNCTION-I
With CONSULT-II
1.
Turn ignition switch ON.
2.
Select “BRAKE SW1” in “DATA MONITOR” mode with CONSULT-II.
3.
Check “BRAKE SW1” indication under the following conditions.
Without CONSULT-II
1.
Turn ignition switch ON.
2.
Check voltage between ECM terminal 108 and ground under the
following conditions.
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 3.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
101
LG
Stop lamp switch
[Ignition switch: OFF]
●
Brake pedal: Fully released
Approximately 0V
[Ignition switch: OFF]
●
Brake pedal: Slightly depressed
BATTERY VOLTAGE
(11 - 14V)
108
LG
ASCD brake switch
[Ignition switch: ON]
●
Brake pedal: Slightly depressed
Approximately 0V
[Ignition switch: ON]
●
Brake pedal: Fully released
BATTERY VOLTAGE
(11 - 14V)
CONDITION
INDICATION
When brake pedal is slightly depressed
OFF
When brake pedal is fully released
ON
SEC011D
CONDITION
VOLTAGE
When brake pedal is slightly depressed
Approximately 0V
When brake pedal is fully released
Battery voltage
MBIB0061E
EC-700
ASCD BRAKE SWITCH
2005 Pathfinder
2.
CHECK OVERALL FUNCTION-II
With CONSULT-II
Check “BRAKE SW2” indication in “DATA MONITOR” mode.
Without CONSULT-II
Check voltage between ECM terminal 101 and ground under the following conditions.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 7.
CONDITION
INDICATION
When brake pedal is fully released
OFF
When brake pedal is slightly depressed
ON
SEC013D
CONDITION
VOLTAGE
When brake pedal is fully released
Approximately 0V
When brake pedal is slightly depressed
Battery voltage
MBIB0060E
ASCD BRAKE SWITCH
EC-701
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EC
2005 Pathfinder
3.
CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ASCD brake switch harness connector.
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 5.
NG
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
●
Fuse block (J/B) connector E160
●
10A fuse
●
Harness for open or short between ASCD brake switch and fuse
>> Repair open circuit or short to ground in harness or connectors.
5.
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 108 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 6.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.
CHECK ASCD BRAKE SWITCH
Refer to
EC-703, "Component Inspection"
OK or NG
OK
>> GO TO 11.
NG
>> Replace ASCD brake switch.
BBIA0560E
Voltage: Battery voltage
PBIB0857E
Continuity should exist.
EC-702
ASCD BRAKE SWITCH
2005 Pathfinder
7.
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 9.
NG
>> GO TO 8.
8.
DETECT MALFUNCTIONING PART
Check the following.
●
Fuse block (J/B) connector E160
●
10A 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.
9.
CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Disconnect ECM harness connector.
2.
Check harness continuity between ECM terminal 101 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 10.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
10.
CHECK STOP LAMP SWITCH
Refer to
EC-703, "Component Inspection"
OK or NG
OK
>> GO TO 11.
NG
>> Replace stop lamp switch.
BBIA0560E
Voltage: Battery voltage
PBIB1184E
Continuity should exist.
ASCD BRAKE SWITCH
EC-703
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EC
2005 Pathfinder
11.
CHECK INTERMITTENT INCIDENT
Refer to
EC-158, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Component Inspection
UBS00KIT
ASCD BRAKE SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect ASCD brake switch harness connector.
3.
Check harness continuity between ASCD brake switch terminals
1 and 2 under the following conditions.
If NG, adjust ASCD brake switch installation, refer to
, 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
, 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 brake pedal is fully released.
Should not exist.
When brake pedal is slightly depressed.
Should exist.
PBIB1185E
EC-704
ASCD INDICATOR
2005 Pathfinder
ASCD INDICATOR
PFP:24814
Component Description
UBS00KIU
ASCD indicator lamp illuminates to indicate ASCD operation status. Lamp has two indicators, CRUISE and
SET, and is integrated in combination meter.
CRUISE indicator illuminates when MAIN switch on ASCD steering switch is turned ON to indicated that
ASCD system is ready for operation.
SET indicator illuminates when following conditions are met.
●
CRUISE indicator is illuminated.
●
SET/COAST switch on ASCD steering switch is turned ON while vehicle speed is within the range of
ASCD setting.
SET indicator remains lit during ASCD control.
Refer to
EC-30, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)"
for the ASCD function.
CONSULT-II Reference Value in Data Monitor Mode
UBS00KIV
Specification data are reference value.
MONITOR ITEM
CONDITION
SPECIFICATION
CRUISE LAMP
●
Ignition switch: ON
●
MAIN switch: Pressed at the 1st
time
→
at the 2nd time
ON
→
OFF
SET LAMP
●
MAIN switch: ON
●
When vehicle speed is
between 40 km/h (25 MPH)
and 144 km/h (89 MPH)
●
ASCD: Operating
ON
●
ASCD: Not operating
OFF
ASCD INDICATOR
EC-705
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EC
2005 Pathfinder
Wiring Diagram
UBS00KIW
BBWA1778E
EC-706
ASCD INDICATOR
2005 Pathfinder
Diagnostic Procedure
UBS00KIX
1.
CHECK OVERALL FUNCTION
Check ASCD indicator under the following conditions.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 2.
2.
CHECK DTC
Check that DTC U1000 or U1001 is not displayed.
OK or NG
OK
>> GO TO 3.
NG
>> Perform trouble diagnoses for DTC U1000, U1001. Refer to
.
3.
CHECK DTC WITH COMBINATION METER
Refer to
.
OK or NG
OK
>> GO TO 4.
NG
>> Go to
.
4.
CHECK INTERMITTENT INCIDENT
Refer to
EC-158, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
ASCD INDICATOR
CONDITION
SPECIFICATION
CRUISE LAMP
●
Ignition switch: ON
●
MAIN switch: pressed at the 1st
time
→
at the 2nd time
ON
→
OFF
SET LAMP
●
MAIN switch: ON
●
When vehicle speed is
between 40 km/h (25 MPH)
and 144 km/h (89 MPH)
●
ASCD: Operating
ON
●
ASCD: Not operating
OFF
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