Nissan Terrano model r20 series 2004. Manual - part 442

DIAGNOSTIC PROCEDURE 4
(Door key cylinder switch check)

CHECK DOOR KEY CYLINDER SWITCH
INPUT SIGNAL (LOCK SIGNAL).
Check voltage 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 time control unit and door key
cylinder.

Key cylinder switch operation

Voltage (V)

Lock

0

Unlock/neutral

5

Terminals

Key position

Continuity

q

1

-

q

2

Unlock/neutral

No

Lock

Yes

YEL907E

NEL614

H

H

THEFT WARNING SYSTEM

Trouble Diagnoses (Cont’d)

EL-272

DIAGNOSTIC PROCEDURE 5
(Theft warning horn alarm check)

CHECK THEFT WARNING HORN
ALARM OPERATION.
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. Apply ground to time control unit con-

nector terminal

U43

.

Does horn alarm activate?

No

E

Yes

Theft warning horn is OK.

Check theft warning horn relay.

OK

E

NG

Replace.

CHECK POWER SUPPLY FOR THEFT
WARNING HORN RELAY.
1. Disconnect theft warning horn relay

connector.

2. Check voltage between terminal

q

1

and

ground, and

q

3

and ground.

Battery voltage should exist.

OK

E

NG

Check the following:

I

10A fuse (No. 16 ,
located in the fuse and
fusible link box)

I

Harness for open or
short between theft
warning horn relay and
fuse

CHECK THEFT WARNING HORN RELAY
CIRCUIT.
1. Disconnect theft warning horn relay

connector.

2. Check continuity between theft warn-

ing horn relay

q

2

and time control unit

terminal

U43

.

Continuity should exist.

3. Check continuity between theft warn-

ing horn relay

q

5

and theft warning

horn connector terminal 1.
Continuity should exist.

OK

E

NG

Repair harness.

Check harness for open between theft
warning horn and ground.

NEL615

NEL616

YEL906E

H

H

H

H

THEFT WARNING SYSTEM

Trouble Diagnoses (Cont’d)

EL-273

DIAGNOSTIC PROCEDURE 6
(Hazard lamp alarm check)

Push hazard switch to ON.
Check hazard lamp operation.

NG

E

OK

Replace time control unit.

1. Remove time control unit from fuse

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

2. Check harness continuity between

fuse block (J/B) terminals

U11

and

U15

and ground.

Continuity should exist.

OK

E

NG

Check the following.

I

Harness connectors

I

Fuse block (J/B)

I

Turn signal lamps

I

Harness between time
control unit and turn sig-
nal lamps, turn signal
lamps and ground.

Replace time control unit.

NEL618

H

H

THEFT WARNING SYSTEM

Trouble Diagnoses (Cont’d)

EL-274

Engine Compartment

YEL842E

LOCATION OF ELECTRICAL UNITS

EL-275