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Nissan Leaf. Manual - part 1134

ST-28

< SYMPTOM DIAGNOSIS >

[WITH HEATED STEERING WHEEL]

HEATED STEERING WHEEL SYSTEM DOES NOT ACTIVATE

YES

>> GO TO 9.

>> Repair or replace damaged parts.

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.

>> 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-

ing Wheel Switch"

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to

HAC-187, "Removal and Installation"

(with heat pump) or

HAC-

347, "Removal and Installation"

(without heat pump).

>> 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

Yes

A/C auto amp.

Ground

Continuity

Connector

Terminal

M55

HEATED STEERING WHEEL SWITCH INDICATOR LAMP DOES NOT TURN ON

ST-29

< SYMPTOM DIAGNOSIS >

[WITH HEATED STEERING WHEEL]

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

EXL-30, "Wiring Diagram"

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.

>> GO TO 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.

>> Repair or replace damaged parts.

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

− 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

Yes

Heated steering wheel relay

Heated steering wheel switch

Continuity

Connector

Terminal

Connector

Terminal

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.

>> Repair or replace damaged parts.

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.

>> Replace heated steering wheel relay. Refer to

ST-8, "HEATED STEERING WHEEL SYSTEM :

Component Parts Location"

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.

>> Repair or replace damaged parts.

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.

>> Repair or replace damaged parts.

CHECK HEATED STEERING WHEEL SWITCH

Check heated steering wheel switch. Refer to

ST-9, "HEATED STEERING WHEEL SYSTEM : Heated Steer-

ing Wheel Switch"

Is the inspection result normal?

YES

>> Replace A/C auto amp. Refer to

HAC-187, "Removal and Installation"

(with heat pump) or

HAC-

347, "Removal and Installation"

(without heat pump).

>> Replace heated steering wheel switch. Refer to

ST-46, "Removal and Installation"

Heated steering wheel relay

Ground

Continuity

Connector

Terminal

A/C auto amp.

Heated steering wheel switch

Continuity

Connector

Terminal

Connector

Terminal

M55

Yes

A/C auto amp.

Ground

Continuity

Connector

Terminal

M55

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

ST-31

< SYMPTOM DIAGNOSIS >

[WITH HEATED STEERING WHEEL]

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

)

(NVH RAX)

(NVH F

(NVH

RSU)

NVH in BR

section

Possible cause and SUSPECTED PARTS

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AXLE and SUSPENSI

TIRE

ROAD WHEEL

DRIVE S

AFT

BRAKE

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