Nissan Pathfinder (2008 year). Manual — part 342
P2A00, P2A03 A/F SENSOR 1
EC-853
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[VK56DE]
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OK
>> GO TO 9.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
9.
CHECK A/F SENSOR 1 HEATER
EC-577, "Component Inspection"
OK or NG
OK
>> GO TO 10.
NG
>> GO TO 11.
10.
CHECK INTERMITTENT INCIDENT
GI-51, "Intermittent Incident"
.
OK or NG
OK
>> GO TO 11.
NG
>> Repair or replace.
11.
REPLACE AIR FUEL RATIO (A/F) SENSOR 1
Replace malfunctioning air fuel ratio (A/F) sensor 1.
CAUTION:
• Discard any A/F sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; use a new one.
• Before installing new A/F sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.
>> GO TO 12.
12.
CONFIRM A/F ADJUSTMENT DATA
1.
Turn ignition switch OFF and then ON.
2.
Select “A/F ADJ-B1” and “A/F ADJ-B2” in “DATA MONITOR” mode with CONSULT-III.
3.
Make sure that “0.000” is displayed on CONSULT-III screen.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 13.
13.
CLEAR THE SELF-LEARNING DATA
With CONSULT-III
1.
Start engine and warm it up to normal operating temperature.
2.
Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-III.
3.
Clear the self-learning control coefficient by touching “CLEAR”.
Without CONSULT-III
1.
Start engine and warm it up to normal operating temperature.
2.
Turn ignition switch OFF.
3.
Disconnect mass air flow sensor (1) harness connector.
4.
Restart engine and let it idle for at least 5 seconds.
5.
Stop engine and reconnect mass air flow sensor harness con-
nector.
6.
Make sure DTC P0102 is displayed.
7.
Erase the DTC memory. Refer to
EC-534, "Malfunction Indicator
8.
Make sure DTC P0000 is displayed.
>> GO TO 14.
14.
CONFIRM A/F ADJUSTMENT DATA
1.
Turn ignition switch OFF and then ON.
2.
Select “A/F ADJ-B1” and “A/F ADJ-B2” in “DATA MONITOR” mode with CONSULT-III.
Vehicle front
ALBIA0353ZZ
EC-854
< COMPONENT DIAGNOSIS >
[VK56DE]
P2A00, P2A03 A/F SENSOR 1
3.
Make sure that “0.000” is displayed on CONSULT-III screen.
>> INSPECTION END
ASCD BRAKE SWITCH
EC-855
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ASCD BRAKE SWITCH
Component Description
INFOID:0000000001537988
When the brake pedal is depressed, ASCD brake switch is turned
OFF and stop lamp switch is turned ON. ECM detects the state of
the brake pedal by this input of two kinds (ON/OFF signal).
Refer to
Diagnosis Procedure
INFOID:0000000001537989
1.
CHECK OVERALL FUNCTION-I
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “BRAKE SW 1” in “DATA MONITOR” mode with CONSULT-III.
3.
Check “BRAKE SW 1” indication under the following conditions.
Without CONSULT-III
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.
2.
CHECK OVERALL FUNCTION-II
With CONSULT-III
Check “BRAKE SW 2” indication in “DATA MONITOR” mode.
Without CONSULT-III
Check voltage between ECM terminal 101 and ground under the following conditions.
BBIA0560E
CONDITION
INDICATION
Brake pedal: Slightly depressed
OFF
Brake pedal: Fully released
ON
CONDITION
VOLTAGE
Brake pedal: Slightly depressed
Approximately 0V
Brake pedal: Fully released
Battery voltage
MBIB0061E
CONDITION
INDICATION
Brake pedal: Fully released
OFF
Brake pedal: Slightly depressed
ON
EC-856
< COMPONENT DIAGNOSIS >
[VK56DE]
ASCD BRAKE SWITCH
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 7.
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-III 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 or short to power 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.
CONDITION
VOLTAGE
Brake pedal: Fully released
Approximately 0V
Brake pedal: Slightly depressed
Battery voltage
PBIB1537E
BBIA0560E
Voltage: Battery voltage
PBIB0857E
Continuity should exist.
ASCD BRAKE SWITCH
EC-857
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[VK56DE]
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6.
CHECK ASCD BRAKE SWITCH
EC-858, "Component Inspection"
OK or NG
OK
>> GO TO 11.
NG
>> Replace ASCD brake switch.
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 -III 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
EC-858, "Component Inspection"
OK or NG
OK
>> GO TO 11.
NG
>> Replace stop lamp switch.
BBIA0560E
Voltage: Battery voltage
PBIB1184E
Continuity should exist.
EC-858
< COMPONENT DIAGNOSIS >
[VK56DE]
ASCD BRAKE SWITCH
11.
CHECK INTERMITTENT INCIDENT
GI-51, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000001537990
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
Brake pedal: Fully released.
Should exist.
Brake pedal: Slightly depressed.
Should not exist.
SEC023D
Condition
Continuity
Brake pedal: Fully released.
Should not exist.
Brake pedal: Slightly depressed.
Should exist.
PBIB1185E
ASCD INDICATOR
EC-859
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[VK56DE]
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ASCD INDICATOR
Component Description
INFOID:0000000001537991
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 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
Diagnosis Procedure
INFOID:0000000001537992
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 diagnosis for DTC U1000, U1001. Refer to
.
3.
CHECK COMBINATION METER FUNCTION
MWI-24, "CONSULT-III Function (METER/M&A)"
.
OK or NG
OK
>> GO TO 4.
NG
>> Go to
4.
CHECK INTERMITTENT INCIDENT
GI-51, "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 : Between
40 km/h (25 MPH) and 144 km/h
(89 MPH)
• ASCD: Operating
ON
• ASCD: Not operating
OFF
EC-860
< COMPONENT DIAGNOSIS >
[VK56DE]
COOLING FAN
COOLING FAN
Description
INFOID:0000000001559412
COMPONENT DESCRIPTION
Cooling Fan Motor
The cooling fan operates at each speed when the current flows in the cooling fan motor as follows.
Diagnosis Procedure
INFOID:0000000001559413
1.
CHECK IPDM E/R POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect IPDM E/R harness connectors E120.
3.
Check voltage between IPDM E/R terminal 22 and ground with
CONSULT-II or tester.
OK or NG
OK
>> GO TO 3.
NG
>> GO TO 2.
2.
DETECT MALFUNCTIONING PART
Check the following.
• 40A fusible link
• Harness for open or short between IPDM E/R and battery
>> Repair open circuit or short to ground in harness or connectors.
3.
CHECK IPDM E/R GROUND CIRCUIT
1.
Disconnect IPDM E/R harness connectors E122, E124.
2.
Check harness continuity between IPDM E/R terminals 38, 59 and ground.
Refer to Wiring Diagram.
3.
Also check harness for short to power.
OK or NG
OK
>> GO TO 4.
NG
>> Repair open circuit or short to power in harness or connectors.
4.
CHECK COOLING FAN MOTOR CIRCUIT FOR OPEN AND SHORT
Cooling fan speed
Cooling fan motor terminals
(+)
(
−
)
Low (LOW)
1
3 and 4
2
3 and 4
High (HI)
1 and 2
3 and 4
Voltage: Battery voltage
PBIB2607E
Continuity should exist.
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