Infiniti F50. Manual — part 223
AUTO TRUNK SYSTEM
BL-139
C
D
E
F
G
H
J
K
L
M
A
B
BL
3.
CHECK DETENTION SWITCH
Check continuity between detention switch terminals 6 and 7.
OK or NG
OK
>> GO TO 4.
NG
>> Replace A/T device.
4.
CHECK HARNESS CONTINUITY
1.
Disconnect key switch connector.
2.
Check continuity between detention switch connector M97 terminal 6 and key switch connector M64 ter-
minal 4.
3.
Check continuity between detention switch connector M97 ter-
minal 6 and ground.
OK or NG
OK
>> GO TO 5.
NG
>> Repair or replace harness.
5.
CHECK KEY SWITCH
Check continuity between key switch terminals 3 and 4.
OK or NG
OK
>> Check the following.
●
10A fuse [No.8, located in fuse block (J/B) No.1]
●
Harness for open or short between key switch and
fuse.
NG
>> Repair or replace harness.
Terminals Condition
Continuity
6 7
A/T selector lever in P position
Yes
Other than above
No
PIIA2941E
6 (PU/W) – 4 (PU/W)
: Continuity should exist,
6 (PU/W) – Ground
: Continuity should not exist.
PIIA2942E
Terminals
Condition
Continuity
3
4
Key is inserted
Yes
Key is removed
No
PIIA2943E
BL-140
AUTO TRUNK SYSTEM
Trunk Motor Check
EIS0055V
1.
MOTOR OPERATION CHECK
Check voltage between auto trunk control unit connector and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Replace auto trunk control unit.
2.
CHECK HARNESS CONTINUITY
1.
Turn ignition switch OFF.
2.
Disconnect auto trunk control unit and auto trunk motor connectors.
3.
Check continuity between auto trunk control unit connector B111 terminals 20, 21 and auto trunk motor
connector B109 terminals 6, 7.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness between auto trunk control
unit and auto trunk motor.
Clutch Solenoid Check
EIS0055W
1.
CHECK CLUTCH SOLENOID POWER SUPPLY
Check voltage between auto trunk motor connector B109 terminal 10
and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Check the following.
●
20A fuse [No.15, located in fuse block (J/B)]
●
Harness for open or short between auto trunk motor
and fuse.
Connector
Terminals (Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(-)
B111
20 (G/W)
Ground
Trunk is closed
0
Trunk is opened
Battery voltage
21 (L/W)
Trunk is closed
Battery voltage
Trunk is opened
0
PIIA2946E
20 (G/W) – 7 (G/W)
: Continuity should exist.
21 (L/W) – 6 (L/W)
: Continuity should exist.
PIIA2945E
10 (PU) – Ground
: Battery voltage
PIIA2947E
AUTO TRUNK SYSTEM
BL-141
C
D
E
F
G
H
J
K
L
M
A
B
BL
2.
CHECK CLUTCH SOLENOID SIGNAL
Check voltage between auto trunk control unit connector and ground.
OK or NG
OK
>> Clutch solenoid system is OK.
NG
>> GO TO 3.
3.
CHECK HARNESS CONTINUITY
1.
Disconnect auto trunk control unit and auto trunk motor connector.
2.
Check continuity between auto trunk control unit connector B110
terminal 13 and auto trunk motor connector B109 terminal 3.
OK or NG
OK
>> Check the condition of the harness and the connector.
NG
>> Repair or replace harness between auto trunk control
unit and auto trunk motor.
Trunk Lid Close Switch Check
EIS0055X
1.
CHECK TRUNK LID CLOSE SWITCH SIGNAL
Check voltage between auto trunk control unit connector and ground.
OK or NG
OK
>> Trunk lid close switch is OK.
NG
>> GO TO 2.
Connector
Terminals (Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(-)
B110 13
(L/OR)
Ground
Trunk auto operation
0
Other than above
Battery voltage
PIIA2948E
13 (L/OR) – 3 (L/OR)
: Continuity should exist.
PIIA2949E
Connector
Terminals (Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(-)
B110
8 (W/R)
Ground
Trunk lid close switch
pressed (ON)
0
Other than above (OFF)
5
PIIB0190E
BL-142
AUTO TRUNK SYSTEM
2.
CHECK HARNESS CONTINUITY
1.
Turn ignition switch OFF.
2.
Disconnect auto trunk control unit and trunk lid close switch connector.
3.
Check continuity between auto trunk control unit connector B110 terminal 8 and trunk lid close switch con-
nector B309 terminal 2.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness between auto trunk control
unit and trunk lid close switch.
3.
CHECK TRUNK LID CLOSE SWITCH
Check continuity between trunk lid close switch terminals 1 and 2.
OK or NG
OK
>> GO TO 4.
NG
>> Replace trunk lid close switch.
4.
TRUNK LID CLOSE SWITCH GROUND CIRCUIT CHECK
Check continuity between trunk lid close switch connector B309 terminal 1 and ground.
OK or NG
OK
>> Check the condition of the harness and the connector.
NG
>> Repair or replace harness.
8 (W/R) – 2 (W/R)
: Continuity should exist.
PIIA2951E
Terminals
Condition
Continuity
1
2
Trunk lid switch pressed (ON)
Yes
Other than above
No
PIIB0191E
1 (B) – Ground
: Continuity should exist.
PIIB0192E
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