Nissan Tiida C11. Manual — part 871
HAC-148
< COMPONENT DIAGNOSIS >
[AUTO AIR CONDITIONER (W/O NAVI)]
PTC HEATER CONTROL SYSTEM
Check continuity between water temperature sensor harness con-
nector M64 (A) terminal 2 and PTC control unit harness connector
M84 (B) terminal 8.
Is the inspection result normal
YES
>> GO TO 16.
NO
>> Repair harness or connector.
16.
CHECK VOLTAGE BETWEEN PTC CONTROL UNIT AND GROUND
1.
Turn ignition switch ON.
2.
Check voltage between PTC heater harness connector M84 ter-
minal 10 and ground.
Is the inspection result normal
YES
>> 1.
If equipped with manual transmission, GO TO 22.
2.
If equipped with automatic transmission, GO TO 24.
NO
>> GO TO 17.
17.
CHECK CIRCUIT CONTINUITY BETWEEN PTC CONTROL UNIT AND FRONT AIR CONTROL
1.
Turn ignition switch OFF.
2.
Disconnect front air control and PTC control unit connector.
3.
Check continuity between PTC control unit harness connector
M84 (A) terminal 10 and front air control harness connector M85
(B) terminal 9.
4.
Check continuity between PTC control unit harness connector
M84 (A) terminal 10 and ground.
Is the inspection result normal
YES
>> GO TO 18.
NO
>> Repair harness or connector.
18.
CHECK VOLTAGE BETWEEN AMBIENT SENSOR AND GROUND
A
B
Continuity
Connector
Terminal
Connector
Terminal
Water temperature
sensor: M64
2
PTC control unit:
M84
8
Yes
SJIA0923E
Terminals
Voltage
(Approx.)
(+)
(
−
)
Connector
Terminal
Ground
5V
PTC control unit: M84
10
AWIIA0521ZZ
A
B
Continuity
Connector
Terminal
Connector
Terminal
PTC control unit: M84
10
Front air control:
M85
9
Yes
A
Ground
Continuity
Connector
Terminal
PTC control unit: M84
10
No
AWIIA0525ZZ
PTC HEATER CONTROL SYSTEM
HAC-149
< COMPONENT DIAGNOSIS >
[AUTO AIR CONDITIONER (W/O NAVI)]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
1.
Turn ignition switch OFF.
2.
Disconnect ambient sensor connector E60.
3.
Turn ignition switch ON.
4.
Check voltage between ambient sensor harness connector E60
terminal 2 and ground.
Is the inspection result normal?
YES
>> GO TO 19.
NO
>> GO TO 21.
19.
CHECK CIRCUIT CONTINUITY BETWEEN AMBIENT SENSOR AND FRONT AIR CONTROL
1.
Turn ignition switch OFF.
2.
Disconnect front air control connector M51.
3.
Check continuity between ambient sensor harness connector
E60 (A) terminal 1 and front air control harness connector M51
(B) terminal 33.
Is the inspection result normal?
YES
>> GO TO 20.
NO
>> Repair harness or connector.
20.
CHECK AMBIENT SENSOR
HAC-151, "PTC HEATER (300 WATT) : PTC Heater (300 Watt) Component Inspection"
.
Is the inspection result normal?
YES
>> 1.
Replace front air control. Refer to XX.
2.
HAC-213, "Front Air Control Self-Diagnosis"
and perform self-diagnosis
STEP-2. Confirm that code No. 20 is displayed.
NO
>> 1.
Replace ambient sensor. Refer to XX.
2.
HAC-213, "Front Air Control Self-Diagnosis"
and perform self-diagnosis
STEP-2. Confirm that code No. 20 is displayed.
21.
CHECK CIRCUIT CONTINUITY BETWEEN AMBIENT SENSOR AND FRONT AIR CONTROL
1.
Turn ignition switch OFF.
2.
Disconnect front air control connector M51.
3.
Check continuity between ambient sensor harness connector
E60 (A) terminal 2 and front air control harness connector M51
(B) terminal 30.
4.
Check continuity between ambient sensor harness connector
E34 (A) terminal 2 and ground.
Terminals
Voltage
(Approx.)
(+)
(
−
)
Connector
Terminal
Ground
Ambient sensor:
E60
2
5V
AWIIA0307ZZ
A
B
Continuity
Connector
Terminal
Connector
Terminal
Ambient sensor:
E60
1
Front air control:
M51
33
Yes
AWIIA0308ZZ
A
B
Continuity
Connector
Terminal
Connector
Terminal
Ambient sensor:
E60
2
Front air control:
M51
30
Yes
AWIIA0309ZZ
HAC-150
< COMPONENT DIAGNOSIS >
[AUTO AIR CONDITIONER (W/O NAVI)]
PTC HEATER CONTROL SYSTEM
Is the inspection result normal?
YES
>> 1.
Replace front air control. Refer to XX.
2.
HAC-213, "Front Air Control Self-Diagnosis"
and perform self-diagnosis
STEP-2. Confirm that code No. 20 is displayed.
NO
>> Repair harness or connector.
22.
CHECK ENGINE RPM SIGNAL (MANUAL TRANSMISSION)
1.
Reconnect PTC control unit.
2.
Start the engine.
3.
Check voltage between PTC control unit harness connector
M84 terminal 4 and ground.
Is the inspection result normal
YES
>> GO TO 24.
NO
>> GO TO 23.
23.
CHECK CONTINUITY OF ENGINE RPM CIRCUIT BETWEEN FRONT AIR CONTROL AND PTC CON-
TROL UNIT (MANUAL TRANSMISSION)
1.
Turn ignition switch OFF.
2.
Disconnect ECM and PTC control unit connector.
3.
Check continuity between PTC control unit harness connector
M84 (A) terminal 4 and ECM harness connector F10 (B) termi-
nal 13.
4.
Check continuity between PTC control unit harness connector
M84 (A) terminal 4 and ground.
Is the inspection result normal
YES
>> Replace ECM. Refer to XX.
NO
>> Repair harness or connector.
24.
CHECK BCM INPUT (FAN ON) SIGNAL
A
Ground
Continuity
Connector
Terminal
Ambient sensor:
E60
2
No
Terminals
Voltage
(Approx.)
(+)
(
−
)
Connector
Terminal
Ground
PTC control unit: M84
4
4.2V
SJIA0924E
A
B
Continuity
Connector
Terminal
Connector
Terminal
PTC control unit: M84
4
ECM: F10
13
Yes
A
Ground
Continuity
Connector
Terminal
PTC control unit: M84
4
No
SJIA0925E
PTC HEATER CONTROL SYSTEM
HAC-151
< COMPONENT DIAGNOSIS >
[AUTO AIR CONDITIONER (W/O NAVI)]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
1.
Turn blower control dial to "1" position.
2.
Confirm fan on signal between PTC control unit harness con-
nector M84 terminal 11 and ground using oscilloscope.
Is the inspection result normal
YES
>> Replace PTC control unit.
NO
>> GO TO 25.
25.
CHECK CIRCUIT CONTINUITY BETWEEN BCM AND PTC CONTROL UNIT
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector and PTC control unit connector.
3.
Check continuity between BCM harness connector M19 (A) ter-
minal 50 and PTC control unit harness connector M84 (B) ter-
minal 11.
4.
Check continuity between PTC control unit harness connector
M84 (A) terminal 11 and ground.
Is the inspection result normal
YES
>> Replace BCM. Refer to XX.
NO
>> Repair harness or connector.
PTC HEATER (300 WATT) : PTC Heater (300 Watt) Component Inspection
INFOID:0000000001682709
COMPONENT INSPECTION
Ambient Sensor
Terminals
Voltage
(Approx.)
(+)
(-)
Connector
Terminal
PTC control
unit: M84
11
Ground
AWIIA0460ZZ
ZJIA0583J
A
B
Continuity
Connector
Terminal
Connector
Terminal
BCM: M19
50
PTC control unit:
M84
11
Yes
A
Ground
Continuity
Connector
Terminal
PTC control unit: M84
11
No
AWIIA0461ZZ
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