Nissan Frontier. Manual — part 466

BRAKE PEDAL POSITION SWITCH

EC-435

< DTC/CIRCUIT DIAGNOSIS >

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4. Check voltage between clutch pedal position switch terminal 1

and ground under the following conditions with CONSULT or

tester.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 3.

3.

CHECK BRAKE PEDAL POSITION SWITCH POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect brake pedal position switch harness connector.

3. Turn ignition switch ON.

4. Check voltage between brake pedal position switch terminal 1

and ground with CONSULT 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 (No.12)

• Harness for open or short between brake pedal position switch and fuse

>> Repair open circuit, short to ground or short to power in harness or connectors.

5.

CHECK BRAKE PEDAL POSITION SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Check harness continuity between brake pedal position switch terminal 2 and clutch pedal position 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 6.

NG

>> Repair open circuit, short to ground or short to power in harness or connectors.

6.

CHECK BRAKE PEDAL POSITION SWITCH

Refer to

EC-395, "Component Inspection"

.

OK or NG

OK

>> GO TO 9.

NG

>> Replace brake pedal position switch. Refer to

BR-20, "Exploded View"

.

7.

CHECK CLUTCH PEDAL POSITION 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 110 and clutch pedal position switch terminal 2.

CONDITION

VOLTAGE

Brake pedal: Fully released

Battery voltage

Brake pedal: Slightly depressed

Approx. 0V

PBIB0799E

Voltage: Battery voltage

PBIB0857E

Continuity should exist.

EC-436

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BRAKE PEDAL POSITION SWITCH

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, short to ground or short to power in harness or connectors.

8.

CHECK CLUTCH PEDAL POSITION SWITCH

Refer to

EC-395, "Component Inspection"

.

OK or NG

OK

>> GO TO 9.

NG

>> Replace clutch pedal position switch. Refer to

CL-9, "Exploded View"

.

9.

CHECK INTERMITTENT INCIDENT

Refer to

GI-42, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000009481144

BRAKE PEDAL POSITION SWITCH

1. Turn ignition switch OFF.
2. Disconnect brake pedal position switch harness connector.
3. Check continuity between brake pedal position switch terminals

1 and 2 under the following conditions.

If NG, adjust brake pedal position switch installation, refer to

BR-

16

, and perform step 3 again.

CLUTCH PEDAL POSITION SWITCH

1. Turn ignition switch OFF.
2. Disconnect clutch pedal position switch harness connector.
3. Check continuity between clutch pedal position switch terminals

1 and 2 under the following conditions.

If NG, adjust clutch pedal position switch installation, refer to

CL-

7, "On-Vehicle Inspection and Adjustment"

, and perform step 3

again.

Continuity should exist.

Condition

Continuity

Brake pedal: Fully released

Should exist

Brake pedal: Slightly depressed

Should not exist

SEC023D

Condition

Continuity

Clutch pedal: Fully released

Should exist

Clutch pedal: Slightly depressed

Should not exist

SEC024D

ASCD INDICATOR

EC-437

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ASCD INDICATOR

Component Description

INFOID:0000000009481145

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 indicate that ASCD

system is ready for operation.

SET indicator illuminates when the 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

CCS-3

for the ASCD function.

Diagnosis Procedure

INFOID:0000000009481146

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 UXXXX is not displayed.
Yes or No

Yes

>> Perform trouble diagnoses for DTC UXXXX, refer to

EC-151

.

No

>> GO TO 3.

3.

CHECK COMBINATION METER OPERATION

Refer to

MWI-4

.

OK or NG

OK

>> GO TO 4.

NG

>> Go to

MWI-6, "METER SYSTEM : Arrangement of Combination Meter"

.

4.

CHECK INTERMITTENT INCIDENT

Refer to

GI-42

.

>> 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

EC-438

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ELECTRICAL LOAD SIGNAL

ELECTRICAL LOAD SIGNAL

Description

INFOID:0000000009481147

The electrical load signal (Headlamp switch signal, etc.) is transferred through the CAN communication line

from BCM to ECM via IPDM E/R.

Diagnosis Procedure

INFOID:0000000009481148

1.

CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II

1. Turn ignition switch ON.

2. Connect CONSULT and select “DATA MONITOR” mode.

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

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 2.

2.

CHECK HEADLAMP SYSTEM

Refer to

EXL-137

or

EXL-141

.

>> INSPECTION END

Condition

Indication

Lighting switch: ON at 2nd position

ON

Lighting switch: OFF

OFF