Nissan Pathfinder (2006 year). Instruction - part 221

ASCD BRAKE SWITCH

EC-627

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2006 Pathfinder

11. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-144, "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 

BR-6,

"BRAKE 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: Fully released.

Should exist.

When brake pedal: Slightly depressed.

Should not exist.

SEC023D

Condition

Continuity

When brake pedal: Fully released.

Should not exist.

When brake pedal: Slightly depressed.

Should exist.

PBIB1185E

EC-628

ASCD INDICATOR

2006 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-29, "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-629

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2006 Pathfinder

Wiring Diagram

UBS00KIW

BBWA2380E

EC-630

ASCD INDICATOR

2006 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 

EC-153, "DTC U1000, U1001 CAN

COMMUNICATION LINE"

 .

3. 

CHECK COMBINATION METER FUNCTION

Refer to 

DI-4, "COMBINATION METERS"

 .

OK or NG

OK

>> GO TO 4.

NG

>> Go to 

DI-6, "Combination Meter"

 .

4. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-144, "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

ELECTRICAL LOAD SIGNAL

EC-631

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2006 Pathfinder

ELECTRICAL LOAD SIGNAL

PFP:25350

Description

UBS00KIM

The electrical load signal (Headlamp switch signal, etc.) is transferred through the CAN communication line
from BCM to ECM via IPDM E/R.

CONSULT-II Reference Value in Data Monitor Mode

UBS00KIN

Specification data are reference values.

Diagnostic Procedure

UBS00KIO

1. 

CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I

1.

Turn ignition switch ON.

2.

Connect CONSULT-II and select “DATA MONITOR” mode.

3.

Select “LOAD SIGNAL” and check indication under the following
conditions.

OK or NG

OK

>> GO TO 2.

NG

>> GO TO 4.

2. 

CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II

Check “LOAD SIGNAL” indication under the following conditions.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 5.

MONITOR ITEM

CONDITION

SPECIFICATION

LOAD SIGNAL

●

Ignition switch: ON

Rear window defogger switch ON and/
or lighting switch is in 2nd.

ON

Rear window defogger switch and 
lighting switch are OFF.

OFF

HEATER FAN SW

●

Engine: After warning up, idle the 
engine

Heater fan switch: ON

ON

Heater fan switch: OFF

OFF

Condition

Indication

Rear window defogger switch: ON

ON

Rear window defogger switch: OFF

OFF

PBIB0103E

Condition

Indication

Lighting switch: ON at 2nd position

ON

Lighting switch: OFF

OFF

PBIB0103E

EC-632

ELECTRICAL LOAD SIGNAL

2006 Pathfinder

3. 

CHECK HEATER FAN SIGNAL CIRCUIT OVERALL FUNCTION

Select “HEATER FAN SW” and check indication under the following
conditions.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 6.

4. 

CHECK REAR WINDOW DEFOGGER SYSTEM

Refer to 

GW-70, "REAR WINDOW DEFOGGER"

 .

>> INSPECTION END

5. 

CHECK HEADLAMP SYSTEM

Refer to 

LT-5, "HEADLAMP (FOR USA)"

  or 

LT-29, "HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYS-

TEM -"

 .

>> INSPECTION END

6. 

CHECK HEATER FAN CONTROL SYSTEM

Refer to 

ATC-34, "TROUBLE DIAGNOSIS"

  or 

MTC-29, "TROUBLE DIAGNOSIS"

 .

>> INSPECTION END

Condition

Indication

Heater fan control switch: ON

ON

Heater fan control switch: OFF

OFF

PBIB1995E

FUEL INJECTOR

EC-633

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2006 Pathfinder

FUEL INJECTOR

PFP:16600

Component Description

UBS00KI6

The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the fuel injector, the coil in the fuel injector is
energized. The energized coil pulls the ball valve back and allows
fuel to flow through the fuel injector into the intake manifold. The
amount of fuel injected depends upon the injection pulse duration.
Pulse duration is the length of time the fuel injector remains open.
The ECM controls the injection pulse duration based on engine fuel
needs.

CONSULT-II Reference Value in Data Monitor Mode

UBS00KI7

Specification data are reference values.

SEF375Z

MONITOR ITEM

CONDITION

SPECIFICATION

B/FUEL SCHDL

See 

EC-134, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE"

 .

INJ PULSE-B1
INJ PULSE-B2

●

Engine: After warming up

●

Shift lever: P or N

●

Air conditioner switch: OFF

●

No load

Idle

2.0 - 3.0 msec

2,000 rpm

1.9 - 2.9 msec

EC-634

FUEL INJECTOR

2006 Pathfinder

Wiring Diagram

UBS00KI8

BBWA2379E