Infiniti F50. Manual — part 219
TRUNK CLOSURE SYSTEM
BL-123
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D
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B
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Wiring Diagram — T/CLOS —
EIS003OX
TIWM0397E
BL-124
TRUNK CLOSURE SYSTEM
Terminal and Reference Value for Trunk Closure Control Unit
EIS003OZ
*: The trunk room lamp illuminates.
Preliminary Check
EIS003P0
●
Remove the fuse No.15 for the trunk closure with the trunk closure inactive. Check that the trunk lid can
be open/closed normally with the trunk opener switch, remote controller switch, or key in trunk key cylin-
der.
Symptom Chart
EIS003P1
Closure Control Unit Power Supply and Ground Circuit Check
EIS003P2
1.
POWER SUPPLY CIRCUIT CHECK
1.
Turn ignition switch OFF.
2.
Disconnect trunk closure control unit connector.
3.
Check voltage between trunk closure control unit connector B56 terminal 2 and ground.
OK or NG ?
OK
>> GO TO 2.
NG
>> Check the following.
●
20A fuse [No.15, located in the fuse block (J/B) No.1].
●
Harness for open or short between trunk closure con-
trol unit and fuse.
Terminal
Wire color
Item
Condition
Voltage (V)
(Approx.)
1
P
Trunk lid lock switch signal
Engage the trunk lock (OFF)
Battery voltage
Except than the above (ON)
0
2
PU
BAT power supply
—
Battery voltage
3
P/L
Trunk lid striker switch signal
Pressed the striker switch lever (OFF)
Battery voltage
Except than the above (ON)
0*
4 B
Ground
—
0
5
—
Trunk closure motor ground
—
0
6
—
Trunk closure motor output signal
Trunk closure motor is operation
Battery voltage
Except than the above
0
Symptom
Malfunctioning system
Refer to page
Trunk closure does not operate
(opening/closing)
Trunk closure control unit power supply and ground circuit check.
Trunk lid lock switch check.
Trunk lid striker switch system.
If above systems are “OK”, replace closure control unit.
—
Trunk closure does not operate.
(Trunk room lamp illuminates / goes off with the
striker switch ON-OFF operation.)
Replace closure control unit.
—
Trunk closure does not stop.
Replace closure control unit (stop switch is malfunction).
—
Malfunctioning trunk closure stop position.
2 (PU) – Ground
: Battery voltage
PIIA2806E
TRUNK CLOSURE SYSTEM
BL-125
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2.
GROUND CIRCUIT CHECK
Check continuity between trunk closure control unit connector B56 terminal 4 and ground.
OK or NG ?
OK
>> Power supply and ground circuit is OK.
NG
>> Repair or replace harness.
Trunk Lid Lock Switch Check
EIS003P3
1.
TRUNK LID LOCK SWITCH SIGNAL CHECK
1.
Turn ignition switch OFF.
2.
Check voltage between trunk closure control unit connector and ground.
OK or NG ?
OK
>> Trunk lid lock switch is OK.
NG
>> GO TO 2.
2.
TRUNK LID LOCK SWITCH CIRCUIT CHECK
1.
Disconnect trunk closure control unit and trunk lid lock switch connector.
2.
Check continuity between trunk closure control unit connector B56 terminal 1 and trunk lid lock switch
connector B74 (without auto trunk) or B312 (with atuo trunk) terminal 1.
OK or NG ?
OK
>> GO TO 3.
NG
>> Repair or replace harness.
4 (B) – Ground
: Continuity should exist.
PIIA2807E
Terminals
Condition
Voltage (V)
(Approx.)
( + )
( – )
Connector
Terminal
(Wire color)
Ground
B56
1 (P)
Engage the latch
of trunk lock (OFF)
Battery voltage
Other than the
above (ON)
0
PIIA2808E
1 (P) – 1(P)
: Continuity should exist
PIIA3071E
BL-126
TRUNK CLOSURE SYSTEM
3.
TRUNK LID LOCK SWITCH CHECK
Check continuity between trunk lid lock switch connector B74 terminal 2 and ground.
OK or NG ?
OK
>> GO TO 4.
NG
>> Repair or replace harness.
4.
TRUNK LID LOCK SWITCH CHECK
Check continuity between trunk lid lock switch terminals 1 and 2.
OK or NG ?
OK
>> Trunk lid lock switch is OK.
NG
>> Replace trunk lid lock switch.
Trunk Lid Striker Switch Check
EIS003P4
1.
TRUNK LID STRIKER SWITCH SIGNAL CHECK
1.
Turn ignition switch OFF.
2.
Check voltage between trunk closure control unit connector and ground.
OK or NG ?
OK
>> Trunk lid striker switch is OK.
NG
>> GO TO 2.
2 (B) – Ground
: Continuity should exist
PIIA3072E
Terminals
Condition
Continuity
1
2
Trunk is closed
No
Trunk is opened
Yes
PIIA3073E
Terminals
Condition
Voltage (V)
(Approx.)
( + )
( – )
Connector
Terminal
(Wire color)
Ground
B56
3 (P/L)
Pressed the striker
switch lever (OFF)
Battery voltage
Other than the
above (ON)
0
PIIA3074E
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