Nissan Tiida C11. Manual - part 1436

WCS-26

< COMPONENT DIAGNOSIS >

KEY SWITCH SIGNAL CIRCUIT (WITH INTELLIGENT KEY)

KEY SWITCH SIGNAL CIRCUIT (WITH INTELLIGENT KEY)

Description

INFOID:0000000001722936

Transmits a key switch signal to the BCM.

Component Function Check

INFOID:0000000001722937

1.

CHECK BCM INPUT SIGNAL

Select “DATA MONITOR” for “BCM” and check the “KEY IN SW” monitor value.

>> Inspection End.

Diagnosis Procedure

INFOID:0000000001722938

1.

CHECK FUSE

Check if the key switch and ignition knob switch 10A fuse (No. 31, located in the fuse and relay box) is blown.

Is the fuse blown?

YES

>> Be sure to repair the cause of malfunction before installing new fuse.

NO

>> GO TO 2

2.

CHECK BCM INPUT SIGNAL

Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> GO TO 3

3.

CHECK KEY SWITCH CIRCUIT 

1.

Disconnect BCM and key switch and ignition knob switch con-
nectors.

2.

Check continuity between BCM harness connector M18 (A) and
key switch and ignition knob switch harness connector M32 (B).

3.

Check continuity between BCM harness connector M18 (A) and
ground.

KEY IN SW

When key is inserted into key cylinder

: ON

When key is removed from key cylinder

: OFF

Terminals

Condition

Voltage

(Approx.)

(+)

(

−

)

BCM

connector

Terminal

M18

3

Ground

Key is inserted

Battery voltage

Key is removed

0

AWNIA0269ZZ

A

B

Continuity

Connector

Terminal

Connector

Terminal

M18

3

M32

1

Yes

A

Ground

Continuity

Connector

Terminal

M18

3

No

AWNIA0270ZZ

WCS

KEY SWITCH SIGNAL CIRCUIT (WITH INTELLIGENT KEY)

WCS-27

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair harness or connector.

4.

CHECK KEY SWITCH POWER SUPPLY CIRCUIT

Check voltage between key switch and ignition knob switch harness
connector and ground.

Is the inspection result normal?

YES

>> Replace key switch and ignition knob switch.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000001722939

1.

CHECK KEY SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect key switch and ignition knob switch connector.

3.

Check continuity between key switch and ignition knob switch
terminals 1 and 2.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace key switch and ignition knob switch.

Terminals

Voltage

(Approx.)

(+)

(

−

)

Key switch and ignition 

knob switch connector 

Terminal

M32

2

Ground

Battery voltage

AWNIA0271ZZ

1 – 2

When key is inserted 
into key cylinder

: Continuity should exist.

When key is removed 
from key cylinder

: Continuity should not exist.

AWNIA0272ZZ

WCS-28

< COMPONENT DIAGNOSIS >

KEY SWITCH SIGNAL CIRCUIT (WITHOUT INTELLIGENT KEY)

KEY SWITCH SIGNAL CIRCUIT (WITHOUT INTELLIGENT KEY)

Description

INFOID:0000000001722940

Transmits a key switch signal to the BCM.

Component Function Check

INFOID:0000000001722941

1.

CHECK BCM INPUT SIGNAL

Select “DATA MONITOR” for “BCM” and check the “KEY IN SW” monitor value.

>> Inspection End.

Diagnosis Procedure

INFOID:0000000001722942

1.

CHECK FUSE

Check if the key switch and key lock solenoid 10A fuse [No. 14, located in the fuse block (J/B)] is blown.

Is the fuse blown?

YES

>> Be sure to repair the cause of malfunction before installing new fuse.

NO

>> GO TO 2

2.

CHECK BCM INPUT SIGNAL

Check voltage between BCM harness connector and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> GO TO 3

3.

CHECK KEY SWITCH CIRCUIT 

1.

Disconnect BCM and key switch and key lock solenoid connec-
tors.

2.

Check continuity between BCM harness connector M18 (A) and
key switch and key lock solenoid harness connector M27 (B).

3.

Check continuity between BCM harness connector M18 (A) and
ground.

KEY IN SW

When key is inserted into key cylinder

: ON

When key is removed from key cylinder

: OFF

Terminals

Condition

Voltage

(Approx.)

(+)

(

−

)

BCM

connector

Terminal

M18

3

Ground

Key is inserted

Battery voltage

Key is removed

0

AWNIA0269ZZ

A

B

Continuity

Connector

Terminal

Connector

Terminal

M18

3

M27

1

Yes

A

Ground

Continuity

Connector

Terminal

M18

3

No

AWNIA0270ZZ

WCS

KEY SWITCH SIGNAL CIRCUIT (WITHOUT INTELLIGENT KEY)

WCS-29

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

Is the inspection result normal?

YES

>> GO TO 4

NO

>> Repair harness or connector.

4.

CHECK KEY SWITCH POWER SUPPLY CIRCUIT

Check voltage between key switch and key lock solenoid harness
connector and ground.

Is the inspection result normal?

YES

>> Replace key switch and key lock solenoid.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000001722943

1.

CHECK KEY SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect key switch and key lock solenoid connector.

3.

Check continuity between key switch and key lock solenoid ter-
minals 1 and 2.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace key switch and key lock solenoid.

Terminals

Voltage

(Approx.)

(+)

(

−

)

Key switch and key lock 

solenoid 

Terminal

M27

2

Ground

Battery voltage

AWNIA0271ZZ

1 – 2

When key is inserted 
into key cylinder

: Continuity should exist.

When key is removed 
from key cylinder

: Continuity should not exist.

AWNIA0272ZZ