Nissan Versa Note. Instruction — part 501
DEFROSTER POSITION SIGNAL
HAC-39
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
DEFROSTER POSITION SIGNAL
Description
INFOID:0000000009703515
• Each signal is sent to BCM by setting the D/F or DEF position.
• BCM judges the change of the air inlet and recognition of A/C switch ON or OFF according to input switch
signal.
Component Function Check
INFOID:0000000009703516
1.
CHECK DEFROSTER POSITION SIGNAL
With CONSULT
1. Turn the ignition switch ON.
2. Select the “FR DEF SW” on “DATA MONITOR” in BCM.
3. Check the A/C switch signal when A/C switch is operated.
Is inspection result normal?
YES
>> Inspection End.
NO
>> Refer to
Diagnosis Procedure
INFOID:0000000009703517
1.
CHECK VOLTAGE BETWEEN FRONT AIR CONTROL AND GROUND
1. Turn the ignition switch OFF.
2. Disconnect the front air control connector.
3. Turn the ignition switch ON.
4. Check voltage between front air control harness connector and ground.
Is inspection result normal?
YES
>> Replace the front air control. Refer to
HAC-56, "Removal and Installation"
.
NO
>> GO TO 2.
2.
CHECK CONTINUITY BETWEEN FRONT AIR CONTROL AND BCM
1. Turn the ignition switch OFF.
2. Disconnect the BCM connector.
3. Check continuity between front air control harness connector and BCM harness connector.
Is inspection result normal?
YES
>> GO TO 3.
NO
>> Repair the harness or connector.
3.
CHECK CONTINUITY BETWEEN FRONT AIR CONTROL AND GROUND
Check continuity between front air control harness connector and the ground.
Monitor item
Condition
Status
FR DEF SW
MODE position
D/F or DEF
On
VENT, B/L or FOOT
Off
(+)
(
−)
Voltage
(Approx.)
Front air control
—
Connector
Terminal
M65
16
Ground
Battery voltage
Front air control
BCM
Continuity
Connector
Terminal
Connector
Terminal
M65
16
M19 (without Intelligent Key)
31
Yes
M98 (with Intelligent Key)
103
HAC-40
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONING]
DEFROSTER POSITION SIGNAL
Is inspection result normal?
YES
BCS-70, "Removal and Installation"
(with Intelligent Key) or
(without Intelligent Key).
NO
>> Repair the harness or connector.
Front air control
—
Continuity
Connector
Terminal
M65
16
Ground
No
THERMO CONTROL AMPLIFIER
HAC-41
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
THERMO CONTROL AMPLIFIER
Component Function Check
INFOID:0000000009702394
1.
CHECK A/C ON SIGNAL
With CONSULT
1. Turn ignition switch ON.
2. Select “AIR CONDITIONER” of “BCM” using CONSULT.
3. Select “THERMO AMP” in “DATA MONITOR” mode, and check status under the following condition.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Refer to
Diagnosis Procedure
INFOID:0000000009702395
1.
CHECK FUSE
1. Turn ignition switch OFF.
2. Check 10A fuse (No. 21, located in fuse block (J/B)].
NOTE:
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace the blown fuse after repairing the affected circuit.
2.
CHECK THERMO CONTROL AMP. POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect thermo control amp. connector.
3. Turn ignition switch ON.
4. Check voltage between thermo control amp. harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector between thermo control amp. and fuse.
3.
CHECK THERMO CONTROL AMP. GROUND CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Check continuity between thermo control amp. harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair harness or connector.
Monitor item
Condition
Status
THERMO AMP
Ignition switch
ON
On
OFF
Off
+
−
Voltage
(Approx.)
Thermo control amp.
Connector
Terminal
M42
3
Ground
Battery voltage
Thermo control amp.
—
Continuity
Connector
Terminal
M42
1
Ground
Yes
HAC-42
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONING]
THERMO CONTROL AMPLIFIER
4.
CHECK THERMO CONTROL AMP. SIGNAL
1. Turn ignition switch ON.
2. Check voltage between thermo control amp. harness connector and ground.
Is the inspection result normal?
YES
>> Replace thermo control amp.
NO
>> GO TO 5.
5.
CHECK THERMO CONTROL AMP. SIGNAL CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between thermo control amp. harness connector and BCM harness connector.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-70, "Removal and Installation"
(without Intelligent Key).
NO
>> Repair harness or connector.
+
−
Voltage
(Approx.)
Thermo control amp.
Connector
Terminal
M42
2
Ground
Battery voltage
Thermo control amp.
BCM
Continuity
Connector
Terminal
Connector
Terminal
M42
2
M18 (without Intelligent Key)
26
Yes
M97 (with Intelligent Key)
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