Nissan Terrano r20e. Manual - part 263

DIAGNOSTIC PROCEDURE 1-(2)
(Hood switch check)

CHECK HOOD SWITCH INPUT SIGNAL.
Remove time control unit from fuse block.
Note: Junction block (J/B) is very frag-
ile. TCU should be removed carefully
to avoid breaking the locking bars.
Check continuity between control unit ter-
minal

U32

and ground.

OK

E

OK

Hood switch is OK.

CHECK HOOD SWITCH.
1. Disconnect hood switch connector.
2. Check continuity between hood switch

terminals.

OK

E

NG

Replace hood switch.

Check the following.

I

Hood switch ground circuit

I

Harness for open or short between con-
trol unit and hood switch

Condition

Continuity

Hood is open.

Yes

Hood is closed.

No

Terminals

Condition

Continuity

q

1

-

q

2

Pushed

No

Released

Yes

YEL339D

YEL340D

H

H

THEFT WARNING SYSTEM

Trouble Diagnoses (Cont’d)

EL-235

DIAGNOSTIC PROCEDURE 2
(Security indicator check)

CHECK INDICATOR LAMP OUTPUT
SIGNAL.
1) Remove time control unit from fuse

block.
Note: Junction block (J/B) is very
fragile. TCU should be removed
carefully to avoid breaking the lock-
ing bars.

2) Check voltage between time control

unit terminal

U18

and ground.

Battery voltage should exist.

NG

E

OK

Security indicator lamp is
OK.

CHECK INDICATOR LAMP.

OK

E

NG

Replace indicator lamp.

CHECK POWER SUPPLY CIRCUIT FOR
INDICATOR.
1) Disconnect security indicator connec-

tor.

2) Check voltage between indicator termi-

nal

q

27

and ground.

Battery voltage should exist.

OK

E

NG

Check the following:

I

10A fuse [No.

16

,

located in the fuse block
(J/B)]

I

Harness for open or
short between combina-
tion meter and fuse

Check harness for open or short between
security indicator and time control unit.

YEL603D

YEL341D

H

H

H

THEFT WARNING SYSTEM

Trouble Diagnoses (Cont’d)

EL-236

DIAGNOSTIC PROCEDURE 3
(Door unlock sensor check)

CHECK DOOR UNLOCK SENSOR INPUT SIG-
NAL.
Remove time control unit from fuse block.
Note: Junction block (J/B) is very fragile.
TCU should be removed carefully to avoid
breaking the locking bars.
Check continuity between time control unit termi-
nals

q

25

,

q

35

,

q

36

and ground.

NG

E

OK

Door unlock sensor
is OK.

CHECK DOOR UNLOCK SENSOR.
1. Disconnect door unlock sensor connector.
2. Check continuity between door unlock sensor

terminals.

OK

E

NG

Replace door
unlock sensor.

Check the following:

I

Door unlock sensor ground circuit

I

Harness for open or short between control unit
and door unlock sensor

Terminals

Condition

Continuity

!

@

Driver

side door

U35

Ground

Locked

No

Unlocked

Yes

Passen-

ger

side door

U36

Ground

Locked

No

Unlocked

Yes

Rear

door

U25

Ground

Locked

No

Unlocked

Yes

Terminals

Condition

Continuity

Front with

super lock

and rear

q

2

-

q

5

Locked

No

Unlocked

Yes

Front with-

out super

lock

q

2

-

q

4

Locked

No

Unlocked

Yes

YEL342D

YEL343D

H

H

THEFT WARNING SYSTEM

Trouble Diagnoses (Cont’d)

EL-237

DIAGNOSTIC PROCEDURE 4
(Door key cylinder switch check)

CHECK DOOR KEY CYLINDER SWITCH
INPUT SIGNAL (LOCK SIGNAL).
Remove time control unit from fuse block.
Note: Junction block (J/B) is very frag-
ile. TCU should be removed carefully
to avoid breaking the locking bars.
Check continuity between time control
unit connector terminal

U29

and ground.

NG

E

OK

Door key cylinder switch is
OK.

CHECK DOOR KEY CYLINDER
SWITCH.
1) Disconnect door key cylinder switch

connector.

2) Check continuity between door key

cylinder switch terminals.

OK

E

NG

Replace key cylinder
switch.

Check the following:

I

Harness connectors between key cylin-
der switch and time control unit

I

Door key cylinder switch ground circuit

I

Harness for open or short-circuit
between super lock control unit and
door key cylinder.

Key cylinder switch operation

Continuity

Between neutral and lock

Yes

Unlock/neutral

No

Terminals

Key position

Continuity

q

1

-

q

2

Neutral

No

Between neu-

tral and lock

Yes

Unlock/neutral

No

Full stroke

(Lock)

No

NEL613

NEL614

H

H

THEFT WARNING SYSTEM

Trouble Diagnoses (Cont’d)

EL-238