Infiniti F50. Manual — part 222
AUTO TRUNK SYSTEM
BL-135
C
D
E
F
G
H
J
K
L
M
A
B
BL
TIWT0015E
BL-136
AUTO TRUNK SYSTEM
Terminals and Reference Value For Auto Trunk Control Unit
EIS0055Q
Preliminary Check
EIS0055R
●
Trunk opener switch can unlock the trunk in regular mode.
●
Trunk lid opener cancel switch is ON.
●
Trunk lid can be open/closed properly with manual operation.
Terminal
Wire color
Item
Condition
Voltage (V)
(Approx.)
3
G/OR
Detention switch
Vehicle
key in
inserted
A/T selector lever in P position
0
A/T selector lever in other position
Battery voltage
4
R/L
Trunk buzzer
Buzzer OFF
Battery voltage
Buzzer ON
0
5
G/Y
Remote control trunk
open signal
Remote controller trunk switch (ON)
5
→
0
→
5
6
Y/R
Trunk lid opener switch
OFF
→
ON (OPEN)
5
→
0
7
BR/W
Speed signal
Speedometer operation (the vehicle speed is
approx. 40 km/h).
8
W/R
Trunk lid close switch
Trunk lid close switch ON
0
Trunk lid close switch OFF
5
10 Y/B
Weather strip detection
switch
Trunk lid is between just before fully closed
position and fully closed position (OFF)
5
Other than above (ON)
0
11
L/Y
Lid full up position
switch
Trunk lid fully opened position (ON)
0
Other than above (OFF)
5
12
P
Trunk lid lock switch
Engage the latch of trunk lock (lock)
5
Engage the latch of trunk lock (unlock)
0
13
L/OR
Clutch solenoid
Trunk auto operation
0
Other than above
Battery voltage
14
L/R
Encoder power supply
—
Battery voltage
15
Y
Encoder pulse signal
Trunk motor operation
16 R/W
Encoder
ground
—
0
17
PU
BAT power supply
—
Battery voltage
18
B
Ground
—
0
20 G/W
Trunk motor OPEN
signal
When trunk lid auto open operates
Battery voltage
Other than above
0
21 L/W
Trunk motor CLOSE
signal
When trunk lid auto close operates
Battery voltage
Other than above
0
PIIA0536E
OCC3383D
AUTO TRUNK SYSTEM
BL-137
C
D
E
F
G
H
J
K
L
M
A
B
BL
Symptom Chart
EIS0055S
Auto Trunk Control Unit Power Supply and Ground Circuit Check
EIS0055T
1.
CHECK POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect auto trunk control unit connector.
3.
Check voltage between auto trunk control unit harness connector B111 terminal 17 and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Check the following.
●
20A fuse [No.15, located in fuse block (J/B) No.1]
●
Harness for open or short between auto trunk control
unit and fuse.
Symptom
Malfunctioning system and reference
Refer to page
Trunk lid auto OPEN/CLOSE operation does not work.
1. Auto trunk control unit power supply and
ground circuit check
2. Vehicle speed signal check
3. Detention switch check
4. Trunk motor check
5. Clutch solenoid check
6. Weather strip detection switch check
7. Lid full up position switch check
8. Replace auto trunk control unit
Trunk lid auto OPEN operation does not work with the trunk lid
opener switch.
1.Trunk lid opener switch check
2.Trunk cancel switch check
3. Replace auto trunk control unit
Trunk lid auto OPEN operation does not work with remote control-
ler trunk switch.
(Door locking/unlocking operation with remote control is normal.)
1.Trunk open signal check
2.Trunk motor check
3. Replace auto trunk control unit
Trunk lid stops during auto OPEN/CLOSE operation.
1.Trunk motor check
2.Clutch solenoid check
3.Replace auto trunk control unit
Trunk lid auto CLOSE operation does not work with trunk lid close
switch.
1.Trunk lid close switch check
2.Replace auto trunk control unit
Trunk lid stops immediately after auto CLOSE operation starts
1.Encoder circuit check
2.Replace auto trunk control unit.
17 (PU) – Ground
: Battery voltage
PIIA2937E
BL-138
AUTO TRUNK SYSTEM
2.
CHECK GROUND CIRCUIT
Check continuity between auto trunk control unit harness connector B111 terminal 18 and ground.
OK or NG
OK
>> Auto trunk control unit power supply and ground circuit
is OK.
NG
>> Repair or replace harness.
Detention Switch Check
EIS0055U
1.
CHECK DETENT SWITCH SIGNAL
Check voltage between auto trunk control unit connector and ground.
OK or NG
OK
>> Detent switch is OK.
NG
>> GO TO 2.
2.
CHECK HARNESS CONTINUITY
1.
Turn ignition switch OFF.
2.
Disconnect auto trunk control unit and detention switch connector.
3.
Check continuity between auto trunk control unit connector B110 terminal 3 and detention switch connec-
tor M97 terminal 7.
4.
Check continuity between auto trunk control unit connector B110
terminal 3 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness.
18 (B) – Ground
: Continuity should exist.
PIIB0186E
Connector
Terminals (Wire color)
Condition
Voltage (V)
(Approx.)
(+)
(-)
B110
3 (G/OR)
Ground
A/T selector lever
in P position
0
Other than above
Battery voltage
PIIA2939E
3 (G/OR) – 7 (G/OR)
: Continuity should exist.
3 (G/OR) – Ground
: Continuity should not exist.
PIIA2940E
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