Infiniti Q45. Manual — part 77
A/T SHIFT LOCK SYSTEM
AT-221
D
E
F
G
H
I
J
K
L
M
A
B
AT
TCWM0485E
AT-222
A/T SHIFT LOCK SYSTEM
Shift Lock Control Unit Reference Values
NCS00117
SHIFT LOCK CONTROL UNIT HARNESS CONNECTOR TERMINALS LAYOUT
SHIFT LOCK CONTROL UNIT INSPECTION TABLE
Data are reference values.
NOTE:
Make sure that the pointer swings only momentarily because the output time is so short. If the inspection is done with an oscilloscope, it
should be observed that the power source voltage lasts for 3.5 to 10 ms.
SCIA2004E
Terminal (Wire
color)
Item
Condition
Judgement standard
1
(LG)
8
(B)
Power source
Always
Battery voltage
2
(G/OR)
8
(B)
Detention switch (for
key)
When selector lever is not in “P” position with
key inserted.
Battery voltage
When selector lever is in “P” position with key
inserted.
Approx. 0 V
3
(LG/R)
8
(B)
Detention switch (for
shift)
When selector lever is not “P” position.
Battery voltage
When selector lever is “P” position.
Approx. 0 V
4
(R/W)
8
(B)
Stop lamp switch
When brake pedal is depressed
Battery voltage
When brake pedal is released
Approx. 0 V
5
(OR/L)
8
(B)
Vehicle speed signal
(8pulse signal)
Speed meter is operated
Refer to
6
(R/L)
8
(B)
Ignition signal
Ignition switch: OFF
Approx. 0 V
Ignition switch: ON
Battery voltage
7
(L/W)
8
(B)
Shift lock solenoid
●
When selector lever is in “P” position, brake
pedal is depressed, and ignition switch is ON.
●
When selector lever is not in “P” position,
ignition switch is ON, and vehicle speed is 10
km/h (6 MPH) or less.
●
For 3 minutes after selector lever is not in “P”
position, vehicle speed is 10 km/h (6 MPH) or
less, and ignition switch is ON
→
OFF.
Approx. 0V
Except the above
Battery voltage
8
(B)
—
Ground
Always
Approx. 0 V
9
(P)
8
(B)
Key lock solenoid
(for lock)
When selector lever is not “P” position.
Battery voltage for approx. 0.1 sec.
(Note)
When selector lever is “P” position.
Approx. 0 V
10
(BR/Y)
8
(B)
Key unlock solenoid
(for unlock)
When selector lever is “P” position with ignition
switch is OFF.
Battery voltage for approx. 0.1 sec.
(Note)
When selector lever is not “P” position with igni-
tion switch is OFF.
Approx. 0 V
A/T SHIFT LOCK SYSTEM
AT-223
D
E
F
G
H
I
J
K
L
M
A
B
AT
Component Inspection
NCS00118
SHIFT LOCK SOLENOID
●
Check operation by applying battery voltage to the A/T device
harness connector.
CAUTION:
Be sure to apply the voltage of the correct polarity to the
respective terminals. Otherwise, the part may be damaged.
DETENTION SWITCH (FOR KEY)
●
Check continuity between terminals of the A/T device harness
connector.
DETENTION SWITCH (FOR SHIFT)
●
Check continuity between terminals of the A/T device harness
connector terminals.
KEY LOCK SOLENOID
Key Lock
●
Check operation by applying battery voltage to key switch and
key lock solenoid harness connector.
CAUTION:
Be careful not to cause burnout of the harness.
Connector
Terminal
M97
10 (Battery voltage) - 9 (Ground)
SCIA4500E
Condition
Connector
Terminal
Continuity
When selector lever is “P”
position.
M97
6 - 7
No
When selector lever is not “P”
position.
Yes
SCIA4501E
Condition
Connector
Terminal
Continuity
When selector lever is “P”
position.
M97
13 - 14
No
When selector lever is not “P”
position.
Yes
SCIA4502E
Connector
Terminal
M64
1 (Battery voltage) - 2 (Ground)
SCIA2042E
AT-224
A/T SHIFT LOCK SYSTEM
Key Unlock
●
Check operation by applying battery voltage to key switch and
key lock solenoid harness connector.
CAUTION:
Be careful not to cause burnout of the harness.
KEY SWITCH
●
Check continuity between terminals of the key switch and key
lock solenoid harness connector.
STOP LAMP SWITCH
●
Check continuity between terminals of the stop lamp switch har-
ness connector.
Check stop lamp switch after adjusting brake pedal. Refer to
Connector
Terminal
M64
2 (Battery voltage) - 1 (Ground)
SCIA2043E
Condition
Connector
Terminal
Continuity
Key inserted
M64
3 - 4
Yes
Key withdrawn
No
SCIA2044E
Condition
Connector
Terminal
Continuity
When brake pedal is depressed
M402
3 - 4
Yes
When brake pedal is released
No
SCIA2126E
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