Infiniti M45 (Y34). Manual - part 797

 

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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 

PG-

2, "POWER SUPPLY ROUTING"

 .

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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