Infiniti M45 (Y34). Manual — part 797
TILT & TELESCOPIC SYSTEM
STC-13
[TILT/TELESCOPIC]
C
D
E
F
H
I
J
K
L
M
A
B
STC
BCM Input/Output Signal Standard
AGS000F1
Termi-
nal
Wire
color
Measuring point
Standard value
17
BR/Y
Data link (RX line)
—
—
18
P
Data link (TX line)
—
—
22
R/B
Telescopic switch FR signal
Telescopic switch
Forward operation
(Motor operated)
Approx. 0V
OFF
Approx. 5V
23
PU/R
Tilt switch DOWN signal
Tilt switch
DOWN operation
(Motor operated)
Approx. 0V
OFF
Approx. 5V
26
G/B
Telescopic switch RR signal
Telescopic switch
Backward operation
(Motor operated)
Approx.0V
OFF
Approx. 5V
36
P/L
Tilt switch UP signal
Tilt switch
UP operation
(Motor operated)
Approx. 0V
OFF
Approx. 5V
56
B
Ground
Ignition switch ON
Approx. 0V
101
P/L
Telescopic motor FR signal
Telescopic switch forward operation.
Battery voltage (Approx. 12V)
102
P
Tilt motor DOWN signal
Tilt switch DOWN operation
Battery voltage (Approx. 12V)
103
R/B
Tilt motor UP signal
Tilt switch UP operation
Battery voltage (Approx. 12V)
104
Y/B
Power supply for tilt and tele-
scopic device
Ignition switch OFF
Battery voltage (Approx. 12V)
105
Y/L
BAT power supply
Ignition switch OFF
Battery voltage (Approx. 12V)
107
P/B
Telescopic motor RR signal
Telescopic switch backward operation
Battery voltage (Approx. 12V)
113
B
Ground
Ignition switch ON
Approx. 0V
114
B
Ground for tilt and telescopic
device
Ignition switch ON
Approx. 0V
STC-14
[TILT/TELESCOPIC]
TILT & TELESCOPIC SYSTEM
Preliminary Check
AGS000F2
POWER SUPPLY AND GROUND CIRCUIT INSPECTION
1.
CHECK FUSE
●
Check if any of the following fuses in the BCM are blown.
OK or NG?
OK
>> GO TO 2.
NG
>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to
2.
CHECK POWER SUPPLY CIRCUIT (BCM)
1.
Disconnect BCM connector.
2.
Turn ignition switch ON.
3.
Check voltage between BCM harness connector M4 terminal 104 (Y/B), 105 (Y/L) and ground.
OK or NG?
OK
>> GO TO 3.
NG
>> Repair or replace harness. Check harness for open or
short between BCM and fuse.
3.
CHECK GROUND CIRCUIT (BCM)
1.
Turn ignition switch OFF.
2.
Check continuity between BCM harness connector M4 terminal 56 (B), 113 (B), 114 (B) and ground.
OK or NG?
OK
>> Preliminary check is OK.
NG
>> Repair or replace BCM ground harness.
Unit
Terminal No.
Power source
Fuse No.
BCM
105
Power source
#3
Terminals
Power
source
Condition
Voltage
(V)
(+)
(–)
Connector
Terminal
M4
104 (Y/B),
105 (Y/L)
Ground
BAT
power
supply
Ignition
switch
OFF
Battery
voltage
SGIA0429E
Terminals
Condition
Continuity
(+)
(–)
Connector
Terminal
M4
56 (B)
Ground
Ignition
switch
OFF
Yes
113 (B)
Ground
Ignition
switch
OFF
Yes
114 (B)
Ground
Ignition
switch
OFF
Yes
PIIA0259E
TILT & TELESCOPIC SYSTEM
STC-15
[TILT/TELESCOPIC]
C
D
E
F
H
I
J
K
L
M
A
B
STC
Symptom 1: Telescopic System Does Not Operate
AGS000F3
1.
CHECK STEERING WHEEL TELESCOPIC MECHANISM
Check the following.
●
Operation malfunction caused by steering wheel telescopic mechanism deformation or pinched harness
or other foreign materials.
●
Operation malfunction and interference with other parts by poor installation.
OK or NG
OK
>> GO TO 2.
NG
>> Repair the malfunctioning part and check again.
2.
CHECK TELESCOPIC SWITCH INPUT/OUTPUT
1.
Disconnect steering position switch connector.
2.
Check voltage between steering position switch harness connector M51 terminals 4 (G/B), 5 (R/B) and
ground.
OK or NG
OK
>> GO TO 3.
NG
>> GO TO 5.
3.
CHECK STEERING POSITION SWITCH GROUND CIRCUIT
Check continuity between steering position switch harness connector M51 terminal 1 (B) and ground.
OK or NG
OK
>> GO TO 4.
NG
>> Replace or replace harness.
4.
CHECK TELESCOPIC SWITCH
Check continuity between steering position switch connector terminals 4, 5 and 1.
OK or NG
OK
>> GO TO 6.
NG
>> Replace steering position switch.
Terminals
Voltage
(V)
(+)
(–)
Connector
Terminal
M51
4 (G/B)
Ground
Approx. 5V
5 (R/B)
Ground
Approx. 5V
SGIA0431E
1 (B) – Ground
: Continuity should exist.
SGIA0432E
Terminals
Steering position switch operation
Continuity
4 – 1
Backward position
Yes
Neutral or forward position
No
5 – 1
Forward position
Yes
Neutral or backward position
No
SGIA0433E
STC-16
[TILT/TELESCOPIC]
TILT & TELESCOPIC SYSTEM
5.
CHECK HARNESS CONTINUITY
1.
Disconnect BCM connector.
2.
Check continuity between BCM harness connector M4 terminals 22 (R/B), 26 (G/B) and steering position
switch harness connector M51 terminals 4 (G/B), 5 (R/B).
3.
Check continuity between BCM harness connector M4 terminals 22 (R/B), 26 (G/B) and ground.
OK or NG?
OK
>> Replace BCM.
NG
>> Repair or replace harness.
6.
CHECK BCM OUTPUT SIGNAL
1.
Disconnect telescopic motor connector.
2.
Check voltage between telescopic motor harness connector M60 terminals 1 (P/L), 2 (P/B) and ground.
OK or NG
OK
>> Replace telescopic motor.
NG
>> GO TO 7.
Terminals
Continuity
(+)
(–)
Connector
Terminal
Connector
Terminal
M4
22 (R/B)
M51
5 (R/B)
Yes
26 (G/B)
4 (G/B)
Yes
22 (R/B)
Ground
No
26 (G/B)
Ground
No
SGIA0434E
Terminals
Condition
Voltage
(+)
(–)
Connector
Terminal
M60
1 (P/L)
Ground
Telescopic switch
(FR operation)
Battery voltage
2 (P/B)
Ground
Telescopic switch
(RR operation)
Battery voltage
1 (P/L), 2 (P/B)
Ground
Telescopic switch
OFF
0V
SGIA0435E
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