2005 NISSAN NAVARA ignition

TROUBLE DIAGNOSIS
ATC-89
C
D
E
F
G
H
I
K
L
MA
B
AT C
2.PERFORM AUTO ACTIVE TEST
Refer toPG-19, "
Auto Active Test".
Does magnet clutch operate?
YES or NO
YES >>lWITH CONSULT-II
GO TO 5.
lWITHOUT CONSULT-II
GO TO 6.
NO >> Check 10A fuse (No. 42, located in IPDM E/R), and GO TO 3.
3.CHECK CIRCUIT CONTINUITY BETWEEN IPDM E/R AND COMPRESSOR
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector and compressor (magnet
clutch) connector.
3. Check continuity between IPDM E/R harness connector E12 ter-
minal 11 and compressor harness connector F20 terminal 1.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4.CHECK MAGNET CLUTCH CIRCUIT
Check for operation sound when applying battery voltage direct cur-
rent to terminal.
OK or NG
OK >> Replace IPDM E/R. Refer toPG-26, "Removal and
Installation of IPDM E/R".
NG >> Replace magnet clutch. Refer toBCS-17, "
Removal and
Installation of BCM".
5.CHECK BCM INPUT (COMPRESSOR ON) SIGNAL
Check compressor ON/OFF signal. Refer toAT C - 3 3 , "
CONSULT-II
Function (BCM)".
OK or NG
OK >> GO TO 8.
NG >> GO TO 6.
11 – 1 : Continuity should exist.
WJIA0560E
SJIA0197E
A/C SW ON : COMP ON SIG ON
A/CSWOFF :COMPONSIGOFF
WJIA0469E

ATC-90
TROUBLE DIAGNOSIS
6.CHECK CIRCUIT CONTINUITY BETWEEN BCM AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect BCM connector and front air control connector.
3. Check continuity between BCM harness connector M42 terminal
27 and front air control harness connector M60 terminal 10.
OK or NG
OK >> GO TO 7.
NG >> Repair harness or connector.
7.CHECK VOLTAGE FOR FRONT AIR CONTROL (COMPRESSOR ON SIGNAL)
1. Reconnect BCM connector and front air control connector.
2. Turn ignition switch ON.
3. Check voltage between front air control harness connector M60
terminal 10 and ground.
OK or NG
OK >> GO TO 8.
NG-1 >> If the voltage is approx. 5V when A/C switch is ON, replace front air control. Refer toAT C - 11 6 ,
"REMOVAL".
NG-2 >> If the voltage is approx. 0V when A/C switch is OFF, replace BCM. Refer toBCS-17, "
Removal
and Installation of BCM". 27 - 10 Continuity should exist.
MJIB0070E
Terminals
ConditionVoltage
(Approx.) (+)
(-) Front air
control con-
nectorTerminal No.
M60 10 GroundA/C switch: ON 0V
A/C switch: OFF 5V
WJIA1137E

TROUBLE DIAGNOSIS
ATC-91
C
D
E
F
G
H
I
K
L
MA
B
AT C
8.CHECK REFRIGERANT PRESSURE SENSOR
WITH CONSULT-II
1. Start engine.
2. Check voltage of refrigerant pressure sensor. Refer toAT C - 3 3 , "
CONSULT-II Function (BCM)".
WITHOUT CONSULT-II
1. Start engine.
2. Check voltage between ECM harness connector F1 terminal 53
and ground.
OK or NG
OK >>lWITH CONSULT-II
GO TO 9.
lWITHOUT CONSULT-II
GO TO 10.
NG >> Refer toEC-325, "
REFRIGERANT PRESSURE SENSOR".
9.CHECK BCM INPUT (FAN ON) SIGNAL
Check FAN ON/OFF signal. Refer toAT C - 3 3 , "
CONSULT-II Function
(BCM)".
OK or NG
OK >> GO TO 12.
NG >> GO TO 10.
10.CHECK CIRCUIT CONTINUITY BETWEEN BCM AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect BCM connector and front air control connector.
3. Check continuity between BCM harness connector M42 terminal
26 and front air control harness connector M61 terminal 35.
OK or NG
OK >> GO TO 11.
NG >> Repair harness or connector.
Te r m i n a l s
ConditionVo l ta g e
(Approx.) (+)
(-)
ECM con-
nectorTerminal No.
F1 53 Ground A/C switch: ON 0.36 - 3.88V
MJIB0071E
FRONT BLOWER CONTROL
DIAL ON: FAN ON SIG ON
FRONT BLOWER CONTROL
DIAL OFF:FANONSIGOFF
WJIA0469E
26 - 35 Continuity should exist.
MJIB0072E

ATC-92
TROUBLE DIAGNOSIS
11 .CHECK VOLTAGE FOR FRONT AIR CONTROL (FAN ON SIGNAL)
1. Reconnect BCM connector and front air control connector.
2. Turn ignition switch ON.
3. Check voltage between front air control harness connector M61
terminal 35 and ground.
OK or NG
OK >> GO TO 12.
NG-1 >> If the voltage is approx. 5V when blower motor is ON, replace front air control. Refer toAT C - 11 6 ,
"REMOVAL".
NG-2 >> If the voltage is approx. 0V when blower motor is OFF, replace BCM. Refer toBCS-17, "
Removal
and Installation of BCM".
12.CHECK SELF-DIAGNOSTIC RESULT
Perform self-diagnosis. Refer toAT C - 5 5 , "
A/C System Self-diagnosis Function"
OK or NG
OK >> Inspection End.
NG >> Refer toAT C - 5 6 , "
SELF-DIAGNOSIS CODE CHART".
COMPONENT INSPECTION
Refrigerant Pressure Sensor
The refrigerant pressure sensor is attached to the condenser.
Terminals
ConditionVoltage
(Approx.) (+)
(-)
Front air con-
trol connectorTerminal No.
M61 35 GroundA/C switch: ON
Blower motor
operates0V
A/C switch: OFF 5V
WJIA1139E
MJIB0167E

TROUBLE DIAGNOSIS
ATC-105
C
D
E
F
G
H
I
K
L
MA
B
AT C
Ambient Sensor CircuitEJS006BW
COMPONENT DESCRIPTION
Ambient Sensor
Ambient sensor is attached to the radiator core support (left side). It
detects ambient temperature and converts it into a resistance value
which is then input into the front air control.
AMBIENT TEMPERATURE INPUT PROCESS
The front air control includes a processing circuit for ambient sensor input. However, when the temperature
detected by ambient sensor increases quickly, the processing circuit retards the front air control function. It
only allows the front air control to recognize an ambient temperature increase of 0.33°C(0.6°F) per 100 sec-
onds.
This prevents constant adjustments due to momentary conditions, such as stopping after high speed driving.
Although the actual ambient temperature has not changed, the temperature detected by ambient sensor will
increase. This is because the heat from the engine compartment can radiate to the front grille area, location of
ambient sensor .
DIAGNOSTIC PROCEDURE FOR AMBIENT SENSOR
SYMPTOM: Ambient sensor circuit is open or shorted. (40 or 41 is
indicated on front air control as a result of conducting the front air
control self-diagnosis)
1.CHECK VOLTAGE BETWEEN AMBIENT SENSOR AND GROUND
1. Disconnect ambient sensor connector.
2. Turn ignition switch ON.
3. Check voltage between ambient sensor harness connector E48
terminal 4 and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 4.
MJIB0168E
MJIB0090E
4 - Ground : Approx. 5V
MJIB0091E

ATC-106
TROUBLE DIAGNOSIS
2.CHECK CIRCUIT CONTINUITY BETWEEN AMBIENT SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector.
3. Check continuity between ambient sensor harness connector
E48 terminal 3 and front air control harness connector M60 ter-
minal 13.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK AMBIENT SENSOR
Refer toATC-107, "
Ambient Sensor".
OK or NG
OK >> 1. Replace front air control.
2. Go to self-diagnosisAT C - 5 5 , "
A/C System Self-diagnosis Function"and perform self-diagno-
sis.
NG >> 1. Replace ambient sensor.
2. Go to self-diagnosisAT C - 5 5 , "
A/C System Self-diagnosis Function"and perform self-diagno-
sis.
4.CHECK CIRCUIT CONTINUITY BETWEEN AMBIENT SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector.
3. Check continuity between ambient sensor harness connector
E48 terminal 4 and front air control harness connector M61 ter-
minal 28.
4. Check continuity between ambient sensor harness connector
E48 terminal 4 and ground.
OK or NG
OK >> 1. Replace front air control.
2. Go to self-diagnosisAT C - 5 5 , "
A/C System Self-diagnosis Function"and perform self-diagno-
sis.
NG >> Repair harness or connector.3 - 13 : Continuity should exist.
MJIB0092E
4 - 28 : Continuity should exist.
4 - Ground : Continuity should not exist.
MJIB0093E

TROUBLE DIAGNOSIS
ATC-109
C
D
E
F
G
H
I
K
L
MA
B
AT C
DIAGNOSTIC PROCEDURE FOR IN-VEHICLE SENSOR
SYMPTOM: In-vehicle sensor circuit is open or shorted. (44 or 46 is
indicated on front air control as a result of conducting self-diagnosis.)
1.CHECK IN-VEHICLE SENSOR CIRCUIT
Are diagnostic codes 44 or 46 present?
YES or NO
YES >> GO TO 6.
NO >> GO TO 2.
2.CHECK VOLTAGE BETWEEN IN-VEHICLE SENSOR AND GROUND
1. Turn ignition switch OFF.
2. Disconnect in-vehicle sensor connector.
3. Turn ignition switch ON.
4. Check voltage between in-vehicle sensor harness connector
M50 terminal 4 and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 5.
3.CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector M60.
3. Check continuity between in-vehicle sensor harness connector
M50 terminal 1 and front air control harness connector M60 ter-
minal 13.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4.CHECK IN-VEHICLE SENSOR
Refer toAT C - 111 , "
In-vehicle Sensor".
OK or NG
OK >> 1. Replace front air control.
2. Go toAT C - 5 5 , "
A/C System Self-diagnosis Function"and perform self-diagnosis.
NG >> 1. Replace in-vehicle sensor.
2. Go toAT C - 5 5 , "
A/C System Self-diagnosis Function"and perform self-diagnosis.
WJIA1146E
4 - Ground : Approx. 5V.
LJIA0089E
1 - 13 : Continuity should exist.
WJIA1147E

ATC-110
TROUBLE DIAGNOSIS
5.CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector.
3. Check continuity between in-vehicle sensor harness connector
M50 terminal 4 and front air control harness connector M61 ter-
minal 27.
4. Check continuity between in-vehicle sensor harness connector
M50 terminal 4 and ground.
OK or NG
OK >> 1. Replace front air control.
2. Go to self-diagnosisAT C - 5 5 , "
A/C System Self-diagnosis Function"and perform self-diagno-
sis.
NG >> Repair harness or connector.
6.CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR MOTOR AND FRONT AIR CON-
TROL (SELF-DIAGNOSIS CODES 44 OR 46)
1. Turn ignition switch OFF.
2. Disconnect front air control connector and in-vehicle sensor con-
nector.
3. Check continuity between in-vehicle sensor harness connector
M50 terminal 2 and 3 and front air control harness connector
M61 terminal 34 and 33.
4. Check continuity between in-vehicle sensor harness connector
M50 terminal 2 and 3 and ground.
OK or NG
OK >> 1. Replace front air control.
2. Go toAT C - 5 5 , "
A/C System Self-diagnosis Function"and perform self-diagnosis.
NG >> Repair harness or connector.4 - 27 : Continuity should exist.
4 - Ground : Continuity should not exist.
WJIA1148E
2 - 34 : Continuity should exist.
3 - 33 : Continuity should exist.
2, 3 - Ground : Continuity should not exist.
WJIA1149E