Nissan Qashqai (2007-2010). Manual — part 951
HAC-164
< COMPONENT DIAGNOSIS >
[MANUAL AIR CONDITIONER]
PTC HEATER
Check 30A fuse (Nos 37, located in the fuse, fusible link and relay box). Refer to
Is the inspection result normal?
YES
>> Repair harness or connector.
NO
>> Replace fuse.
7.
CHECK PTC RELAY-1
Check PTC relay-1. Refer to
HAC-76, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Replace PTC relay-1.
8.
CHECK CIRCUIT CONTINUITY BETWEEN PTC RELAY-1 AND PTC HEATER
Check continuity between PTC relay-1 harness connector E53 terminal 5 and PTC heater harness connector
E117 terminal 3.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Repair harness or connector.
9.
CHECK POWER SUPPLY FOR PTC RELAY-1
1.
Turn ignition switch ON.
2.
Check voltage between PTC relay-1 harness connector E53 terminal 1 and ground.
Is the inspection result normal?
YES
>> GO TO 11.
NO
>> GO TO 10.
10.
CHECK FUSE
Check 10A fuse [Nos 17, located in the fuse block (J/B)]. Refer to
PG-110, "Fuse, Connector and Terminal
Is the inspection result normal?
YES
>> Repair harness or connector.
NO
>> Replace fuse.
11.
CHECK CIRCUIT CONTINUIT BETWEEN PTC RELAY-1 AND IPDM E/R
Check continuity between PTC relay-1 harness connector E53 terminal 2 and IPDM E/R harness connector
E11 terminal 11.
Is the inspection result normal?
YES
>> GO TO 18.
NO
>> Repair harness or connector.
12.
CHECK VOLTAGE FOR PTC RELAY-2
PTC relay-1
PTC heater
Continuity
Connector
Terminal
Connector
Terminal
E53
5
E117
3
Continuity should exist
(+)
(
−
)
Voltage
PTC relay-1
—
Connector
Terminal
E53
1
Ground
Battery voltage
PTC relay-1
IPDM E/R
Continuity
Connector
Terminal
Connector
Terminal
E53
2
E11
11
Continuity should exist
PTC HEATER
HAC-165
< COMPONENT DIAGNOSIS >
[MANUAL AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
1.
Turn ignition switch OFF.
2.
Disconnect PTC relay-2.
3.
Turn ignition switch ON.
4.
Check voltage between PTC relay-2 harness connector E54 terminal 3 and ground.
Is the inspection result normal?
YES
>> GO TO 14.
NO
>> GO TO 13.
13.
CHECK FUSE
Check 30A fuse (Nos 35, located in the fuse, fusible link and relay box). Refer to
Is the inspection result normal?
YES
>> Repair harness or connector.
NO
>> Replace fuse.
14.
CHECK PTC RELAY-2
Check PTC relay-2. Refer to
HAC-76, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 15.
NO
>> Replace PTC relay-2.
15.
CHECK CIRCUIT CONTINUIT BETWEEN PTC RELAY-2 AND PTC HEATER
Check continuity between PTC relay-2 harness connector E54 terminal 5 and PTC heater harness connector
E117 terminal 4.
Is the inspection result normal?
YES
>> GO TO 16.
NO
>> Repair harness or connector.
16.
CHECK POWER SUPPLY FOR PTC RELAY-2
1.
Turn ignition switch ON.
2.
Check voltage between PTC relay-2 harness connector E54 terminal 1 and ground.
Is the inspection result normal?
YES
>> GO TO 17.
NO
>> GO TO 10.
17.
CHECK CIRCUIT CONTINUIT BETWEEN PTC RELAY-2 AND IPDM E/R
Check continuity between PTC relay-2 harness connector E54 terminal 2 and IPDM E/R harness connector
E11 terminal 12.
(+)
(
−
)
Voltage
PTC relay-2
—
Connector
Terminal
E54
3
Ground
Battery voltage
PTC relay-2
PTC heater
Continuity
Connector
Terminal
Connector
Terminal
E54
5
E117
4
Continuity should exist.
(+)
(
−
)
Voltage
PTC relay-2
—
Connector
Terminal
E54
1
Ground
Battery voltage
HAC-166
< COMPONENT DIAGNOSIS >
[MANUAL AIR CONDITIONER]
PTC HEATER
Is the inspection result normal?
YES
>> GO TO 18.
NO
>> Repair harness or connector.
18.
CHECK BCM INPUT (FAN ON) SIGNAL
Check FAN ON/OFF signal in “DATA MONITOR”. Refer to
HAC-140, "AIR CONDITIONER : CONSULT-III
Function (BCM - MANUAL AIR CONDITIONER)"
Is the inspection result normal?
YES
>> GO TO 21.
NO
>> GO TO 19.
19.
CHECK CIRCUIT CONTINUITY BETWEEN HEATER CONTROL PANEL AND BCM
1.
Turn ignition switch OFF.
2.
Disconnect heater control panel connector and BCM harness connector.
3.
Check continuity between heater control panel harness connector M54 terminal 8 and BCM harness con-
nector M65 terminal 15.
Is the inspection result normal?
YES
>> GO TO 20.
NO
>> Repair harness or connector.
20.
CHECK FAN ON SIGNAL
1.
Reconnect heater control panel connector.
2.
Turn ignition switch ON.
3.
Check voltage between heater control panel harness connector M54 terminal 8 and ground.
4.
Turn fan control dial clockwise
5.
Check voltage between heater control panel harness connector M54 terminal 8 and ground.
Is the inspection result normal?
YES
>> GO TO 21.
NO
>> Replace heater control panel.
PTC relay-1
IPDM E/R
Continuity
Connector
Terminal
Connector
Terminal
E54
2
E11
12
Continuity should exist.
FAN SW ON
: FAN ON SIG ON
FAN SW OFF
: FAN ON SIG OFF
Heater control panel
BCM
Continuity
Connector
Terminal
Connector
Terminal
M54
8
M65
15
Continuity should exist
(+)
(
−
)
Voltage
Heater control panel
—
Connector
Terminal
M54
8
Ground
Battery voltage
(+)
(
−
)
Condition
Voltage
Heater control panel
—
Connector
Terminal
M54
8
Ground
Fan control dial: except
OFF
Approx. 0
PTC HEATER
HAC-167
< COMPONENT DIAGNOSIS >
[MANUAL AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
21.
CHECK CIRCUIT CONTINUITY BETWEEN FAN SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect fan switch connector.
3.
Check continuity between fan switch harness connector M88 terminal 6 and 5.
4.
Turn fan control dial clockwise.
5.
Check continuity between fan switch harness connector M88 terminal 6 and 5.
Is the inspection result normal?
YES
>> GO TO 22.
NO
>> Replace heater control panel.
22.
CHECK GROUND CIRCUIT FOR FAN SWITCH
Check continuity between fan switch harness connector M88 terminal 5 and ground.
Is the inspection result normal?
YES
>> GO TO 23.
NO
>> Repair harness or connector.
23.
CHECK CAN COMMUNICATION
Check CAN communication. Refer to
LAN-59, "CAN Communication Signal Chart"
• BCM – IPDM E/R
• BCM – ECM
Is the inspection result normal?
YES
>> Replace IPDM E/R.
NO
>> Repair or replace malfunctioning part(s).
Component Inspection
INFOID:0000000001096710
PTC HEATER
The PTC heater (1) is attached to the A/C unit assembly.
It generates heat electrically.
PTC RELAY
FAN SW
Condition
Continuity
Connector
Terminal
Connector
Terminal
M88
6
M88
5
Fan control dial: OFF
Continuity should not exist
FAN SW
Condition
Continuity
Connector
Terminal
Connector
Terminal
M88
6
M88
5
Fan control dial: except
OFF
Continuity should exist
FAN SW
—
Continuity
Connector
Terminal
M88
5
Ground
Continuity should exist
JPIIA0033ZZ
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