Nissan Leaf. Manual — part 1134
ST-28
< SYMPTOM DIAGNOSIS >
[WITH HEATED STEERING WHEEL]
HEATED STEERING WHEEL SYSTEM DOES NOT ACTIVATE
YES
>> GO TO 9.
NO
>> Repair or replace damaged parts.
9.
CHECK HARNESS BETWEEN A/C AUTO AMP. AND HEATED STEERING WHEEL SWITCH
1. Check continuity between A/C auto amp. harness connector terminal and heated steering wheel switch
harness connector terminal.
2. Check continuity between A/C auto amp. harness connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Repair or replace damaged parts.
10.
CHECK HEATED STEERING WHEEL SWITCH
Check heated steering wheel switch. Refer to
ST-9, "HEATED STEERING WHEEL SYSTEM : Heated Steer-
.
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
HAC-187, "Removal and Installation"
(with heat pump) or
347, "Removal and Installation"
(without heat pump).
NO
>> Replace heated steering wheel switch. Refer to
ST-46, "Removal and Installation"
.
A/C auto amp.
Heated steering wheel switch
Continuity
Connector
Terminal
Connector
Terminal
M55
16
M6
1
Yes
A/C auto amp.
Ground
Continuity
Connector
Terminal
M55
16
No
HEATED STEERING WHEEL SWITCH INDICATOR LAMP DOES NOT TURN ON
ST-29
< SYMPTOM DIAGNOSIS >
[WITH HEATED STEERING WHEEL]
C
D
E
F
H
I
J
K
L
M
A
B
ST
N
O
P
HEATED STEERING WHEEL SWITCH INDICATOR LAMP DOES NOT
TURN ON
Description
INFOID:0000000010119095
• Heated steering wheel switch indicator lamp does not turn on the lamp.
• Heated steering wheel switch indicator lamp does not turn off the lamp.
Diagnosis Procedure
INFOID:0000000010119096
Regarding Wiring Diagram information. Refer to
1.
CHECK POWER SOURCE
1. Turn power switch ON.
2. Turn heated steering wheel switch ON.
3. Check voltage between heated steering wheel switch harness connector terminals.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 2.
2.
CHECK GROUND CIRCUIT
1. Turn power switch OFF.
2. Disconnect heated steering wheel switch connector. Refer to
ST-46, "Removal and Installation"
.
3. Check continuity between heated steering wheel switch harness connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK HARNESS BETWEEN HEATED STEERING WHEEL RELAY AND HEATED STEERING WHEEL
SWITCH
1. Disconnect heated steering wheel relay connector. Refer to
ST-8, "HEATED STEERING WHEEL SYS-
TEM : Component Parts Location"
.
2. Check continuity between heated steering wheel relay harness connector terminal and heated steering
wheel switch harness connector terminal.
3. Check continuity between heated steering wheel relay harness connector terminal and ground.
Heated steering wheel switch
Condition
Voltage (Approx.)
Connector
Terminal
M6
5
− 6
Within 30 seconds after
turning ON the heated
steering switch.
Battery voltage
Other conditions.
0 V
Heated steering wheel switch
Ground
Continuity
Connector
Terminal
M6
6
Yes
Heated steering wheel relay
Heated steering wheel switch
Continuity
Connector
Terminal
Connector
Terminal
M7
5
M6
5
Yes
ST-30
< SYMPTOM DIAGNOSIS >
[WITH HEATED STEERING WHEEL]
HEATED STEERING WHEEL SWITCH INDICATOR LAMP DOES NOT TURN ON
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK HEATED STEERING WHEEL RELAY
Check heated steering wheel relay. Refer to
ST-21, "Component Inspection (Heated Steering Wheel Relay)"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace heated steering wheel relay. Refer to
ST-8, "HEATED STEERING WHEEL SYSTEM :
5.
CHECK POWER SOURCE (BATTERY)
Check the following.
• 12V battery
• Harness for short or open between 12V battery and 15A fuse (No. 8)
• 15A fuse (No. 8)
• Harness for short or open between 15A fuse (No. 8) and heated steering wheel relay
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace damaged parts.
6.
CHECK HARNESS BETWEEN A/C AUTO AMP. AND HEATED STEERING WHEEL SWITCH
1. Check continuity between A/C auto amp. harness connector terminal and heated steering wheel switch
harness connector terminal.
2. Check continuity between A/C auto amp. harness connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair or replace damaged parts.
7.
CHECK HEATED STEERING WHEEL SWITCH
Check heated steering wheel switch. Refer to
ST-9, "HEATED STEERING WHEEL SYSTEM : Heated Steer-
.
Is the inspection result normal?
YES
>> Replace A/C auto amp. Refer to
HAC-187, "Removal and Installation"
(with heat pump) or
347, "Removal and Installation"
(without heat pump).
NO
>> Replace heated steering wheel switch. Refer to
ST-46, "Removal and Installation"
.
Heated steering wheel relay
Ground
Continuity
Connector
Terminal
M7
5
No
A/C auto amp.
Heated steering wheel switch
Continuity
Connector
Terminal
Connector
Terminal
M55
16
M6
1
Yes
A/C auto amp.
Ground
Continuity
Connector
Terminal
M55
16
No
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
ST-31
< SYMPTOM DIAGNOSIS >
[WITH HEATED STEERING WHEEL]
C
D
E
F
H
I
J
K
L
M
A
B
ST
N
O
P
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting Chart
INFOID:0000000010119097
Use the chart below to find the cause of the symptom. If necessary, repair or replace these parts.
Reference
"
"
"
"
—
—
"
(NVH
FA
X
)
"
(NVH RAX)
(NVH F
S
U)
(NVH
RSU)
NVH in BR
section
Possible cause and SUSPECTED PARTS
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AXLE and SUSPENSI
ON
TIRE
ROAD WHEEL
DRIVE S
H
AFT
BRAKE
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