Nissan Frontier D40. Instruction — part 751
MAGNET CLUTCH
HAC-107
< COMPONENT DIAGNOSIS >
[MANUAL A/C (TYPE 2)]
C
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HAC
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1.
Reconnect BCM connector and front air control connector.
2.
Turn ignition switch ON.
3.
Turn A/C switch ON.
4.
Check voltage between front air control harness connector M49
terminal 18 and ground.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-54, "Removal and Installation"
NO-1
>> If the voltage is approx. 5V when blower motor is ON, replace front air control. Refer to
.
NO-2
>> If the voltage is approx. 0V when blower motor is OFF, replace BCM. Refer to
.
7.
CHECK CAN COMMUNICATION
Check CAN communication. Refer to
LAN-14, "Trouble Diagnosis Flow Chart"
.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Repair or replace malfunctioning part(s).
8.
CHECK VOLTAGE FOR FRONT AIR CONTROL (A/C COMPRESSOR ON SIGNAL)
1.
Turn ignition switch ON.
2.
Check voltage between front air control harness connector M49
terminal 10 and ground.
Is the inspection result normal?
YES
>> GO TO 9.
NO-1
>> If the voltage is approx. 5V when A/C switch is ON, replace front air control. Refer to
.
NO-2
>> If the voltage is approx. 0V when A/C switch is OFF, replace BCM. Refer to
.
9.
CHECK CIRCUIT CONTINUITY BETWEEN BCM AND FRONT AIR CONTROL
Terminals
Condition
Voltage
(Approx.)
(+)
(-)
Front air con-
trol connector
Terminal
No.
M49
18
Ground
A/C switch: ON
Blower motor
operates
0V
A/C switch: OFF
Battery voltage
WJIA1628E
Terminals
Condition
Voltage
(Approx.)
(+)
(-)
Front air
control con-
nector
Terminal No.
M49
10
Ground
A/C switch: ON
0V
A/C switch:
OFF
Battery voltage
WJIA1137E
HAC-108
< COMPONENT DIAGNOSIS >
[MANUAL A/C (TYPE 2)]
MAGNET CLUTCH
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector and front air control connector.
3.
Check continuity between BCM harness connector M18 terminal
27 and front air control harness connector M49 terminal 10.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Repair harness or connector.
10.
CHECK INTAKE SENSOR CIRCUITS
Check intake sensor. Refer to
HAC-110, "Intake Sensor Component Inspection"
Is the inspection result normal?
YES
>> GO TO 11.
NO
>> Replace intake sensor. Refer to
VTL-8, "Removal and Installation"
11.
CHECK CAN COMMUNICATION
Check CAN communication. Refer to
LAN-14, "Trouble Diagnosis Flow Chart"
.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-54, "Removal and Installation"
NO
>> Repair or replace malfunctioning part(s).
12.
CHECK MAGNET CLUTCH CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect A/C compressor connector.
3.
Check for operation sound when applying battery voltage to A/C
compressor terminal 1.
Is the inspection result normal?
YES
>> GO TO 13.
NO
>> Replace magnet clutch. Refer to
Installation for Compressor Clutch"
.
13.
CHECK CIRCUIT CONTINUITY BETWEEN IPDM E/R AND A/C COMPRESSOR
1.
Disconnect IPDM E/R connector.
2.
Check continuity between IPDM E/R harness connector E119
terminal 11 and A/C compressor harness connector F3 terminal
1.
Is the inspection result normal?
YES
>> Replace IPDM E/R. Refer to
.
NO
>> Repair harness or connector.
27 - 10
: Continuity should exist.
WJIA1136E
WJIA1472E
11 – 1
: Continuity should exist.
WJIA1470E
INTAKE SENSOR
HAC-109
< COMPONENT DIAGNOSIS >
[MANUAL A/C (TYPE 2)]
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HAC
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INTAKE SENSOR
System Description
INFOID:0000000005275941
COMPONENT DESCRIPTION
Intake Sensor
The intake sensor is located on top of the heater and cooling unit
assembly next to the A/C evaporator cover. It converts temperature
of air after it passes through the evaporator into a resistance value
which is then input to the front air control.
Intake Sensor Diagnosis Procedure
INFOID:0000000005275942
Regarding Wiring Diagram information, refer to
HAC-117, "Wiring Diagram - Air Conditioner Control - Without
DIAGNOSTIC PROCEDURE FOR INTAKE SENSOR
SYMPTOM: Intake sensor circuit is open or shorted.
1.
CHECK VOLTAGE BETWEEN INTAKE SENSOR AND GROUND
1.
Disconnect intake sensor connector.
2.
Turn ignition switch ON.
3.
Check voltage between intake sensor harness connector M146
terminal 2 and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 4.
2.
CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND FRONT AIR CONTROL
WJIA1155E
WJIA1156E
2 - Ground
: Approx. 5V
WJIA1278E
HAC-110
< COMPONENT DIAGNOSIS >
[MANUAL A/C (TYPE 2)]
INTAKE SENSOR
1.
Turn ignition switch OFF.
2.
Disconnect front air control connector.
3.
Check continuity between intake sensor harness connector
M146 terminal 1 and front air control harness connector M49 ter-
minal 13.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK INTAKE SENSOR
HAC-110, "Intake Sensor Component Inspection"
Is the inspection result normal?
YES
>> Replace front air control. Refer to
VTL-7, "Removal and Installation"
.
NO
>> Replace intake sensor. Refer to
VTL-8, "Removal and Installation"
4.
CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND FRONT AIR CONTROL
1.
Turn ignition switch OFF.
2.
Disconnect front air control connector.
3.
Check continuity between intake sensor harness connector
M146 terminal 2 and front air control harness connector M49 ter-
minal 12.
4.
Check continuity between intake sensor harness connector
M146 terminal 2 and ground.
Is the inspection result normal?
YES
>> Replace front air control. Refer to
VTL-7, "Removal and Installation"
.
NO
>> Repair harness or connector.
Intake Sensor Component Inspection
INFOID:0000000005275943
COMPONENT INSPECTION
Intake Sensor
1 - 13
: Continuity should exist.
WJIA1157E
2 - 12
: Continuity should exist.
2 - Ground
: Continuity should not exist.
WJIA1158E
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