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
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