Nissan Frontier. Instruction — part 466
BRAKE PEDAL POSITION SWITCH
EC-435
< DTC/CIRCUIT DIAGNOSIS >
[QR25DE]
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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
EC-395, "Component Inspection"
OK or NG
OK
>> GO TO 9.
NG
>> Replace brake pedal position switch. Refer to
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
< DTC/CIRCUIT DIAGNOSIS >
[QR25DE]
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
EC-395, "Component Inspection"
OK or NG
OK
>> GO TO 9.
NG
>> Replace clutch pedal position switch. Refer to
9.
CHECK INTERMITTENT INCIDENT
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
, 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
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
< DTC/CIRCUIT DIAGNOSIS >
[QR25DE]
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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.
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
.
No
>> GO TO 3.
3.
CHECK COMBINATION METER OPERATION
OK or NG
OK
>> GO TO 4.
NG
>> Go to
MWI-6, "METER SYSTEM : Arrangement of Combination Meter"
.
4.
CHECK 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
EC-438
< DTC/CIRCUIT DIAGNOSIS >
[QR25DE]
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
.
>> INSPECTION END
Condition
Indication
Lighting switch: ON at 2nd position
ON
Lighting switch: OFF
OFF
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