Infiniti M45 (Y34). Manual - part 798

TILT & TELESCOPIC SYSTEM

STC-17

[TILT/TELESCOPIC]

C

D

E

F

H

I

J

K

L

M

A

B

STC

7. 

CHECK TELESCOPIC MOTOR CIRCUIT

1.

Disconnect BCM and telescopic motor connectors.

2.

Check continuity between BCM harness connector M4 terminals 101 (P/L), 107 (P/B) and telescopic
motor harness connector M60 terminals 1 (P/L), 2 (P/B).

3.

Check continuity between BCM harness connector M4 terminals 101 (P/L), 107 (P/B) and ground.

OK or NG

OK

>> Replace BCM.

NG

>> Repair or replace harness.

Terminals

Continuity

BCM (+)

Telescopic motor (–)

Connector

Terminal

Connector

Terminal

M4

101 (P/L)

M60

1 (P/L)

Yes

107 (P/B)

2 (P/B)

Yes

101 (P/L)

Ground

No

107 (P/B)

Ground

No

SGIA0436E

STC-18

[TILT/TELESCOPIC]

TILT & TELESCOPIC SYSTEM

Symptom 2: Tilt System Does Not Operate

AGS000F4

1. 

CHECK STEERING WHEEL TILT MECHANISM

Check the following.

●

Operation malfunction caused by steering wheel tilt 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 TILT SWITCH INPUT/OUTPUT

1.

Disconnect steering position switch connector.

2.

Turn ignition switch ON.

3.

Check voltage between steering position switch harness connector M51 terminals 2 (P/L), 3 (PU/R) and
body ground.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 5.

3. 

CHECK STEERING POSITION SWITCH GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between steering position switch harness connector M51 terminal 1 (B) and body
ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness.

Terminals

Voltage

(V)

(+)

(–)

Connector

Terminal

M4

2 (P/L)

Ground

5V

3 (PU/R)

Ground

5V

SGIA0437E

1 (B) – Ground

: Continuity should exist.

SGIA0432E

TILT & TELESCOPIC SYSTEM

STC-19

[TILT/TELESCOPIC]

C

D

E

F

H

I

J

K

L

M

A

B

STC

4. 

CHECK TILT SWITCH

Check continuity between steering position switch connector terminals 2, 3 and 1.

OK or NG

OK

>> GO TO 6.

NG

>> Replace steering position switch.

5. 

CHECK HARNESS CONTINUITY

1.

Disconnect BCM connector.

2.

Check continuity between BCM harness connector M4 terminals 23 (PU/R), 36 (P/L) and steering position
switch harness connector M51 terminals 2 (P/L), 3 (PU/R).

3.

Check continuity between BCM harness connector M4 terminals 23 (PU/R), 36 (P/L) and ground. 

OK or NG

OK

>> Replace BCM.

NG

>> Repair or replace harness.

6. 

CHECK BCM OUTPUT SIGNAL

1.

Disconnect tilt motor connector.

2.

Check voltage between tilt motor harness connector M58 terminals 1 (R/B), 2 (P) and ground.

OK or NG

OK

>> Replace tilt motor.

NG

>> GO TO 7.

Terminals

Steering position switch operation

Continuity

2 – 1

 Tilt up position

Yes

Neutral or tilt down position

No

3 – 1

Tilt down position

Yes

Neutral or tilt up position

No

SGIA0438E

Terminals

Continuity

(+)

(–)

Connector

Terminal

Connector

Terminal

M4

23 (PU/R)

M51

3 (PU/R)

Yes

36 (P/L)

2 (P/L)

Yes

23 (PU/R)

Ground

No

36 (P/L)

Ground

No

SGIA0439E

Terminals

Condition

Voltage

(+)

(–)

Connector

Terminal

M58

 1 (R/B)

Ground

Tilt switch
(UP operation)

Battery voltage

2 (P)

Ground

Tilt switch
(DOWN operation)

Battery voltage

1 (R/B), 2 (P)

Ground

Tilt switch OFF

0V

SGIA0440E

STC-20

[TILT/TELESCOPIC]

TILT & TELESCOPIC SYSTEM

7. 

CHECK TILT MOTOR CIRCUIT

1.

Disconnect BCM and telescopic motor connectors.

2.

Check continuity between BCM harness connector M4 terminals 102 (P), 103 (R/B) and tilt motor harness
connector M58 terminals 1 (R/B), 2 (P).

3.

Check continuity between BCM harness connector M4 terminals 102 (P), 103 (R/B) and body ground.

OK or NG

OK

>> Replace BCM.

NG

>> Repair or replace harness.

Terminals

Continuity

BCM (+)

Tilt motor (–)

Connector

Terminal

Connector

Terminal

M4

102 (P)

M58

2 (P)

Yes

103 (R/B)

1 (R/B)

Yes

102 (P)

Ground

No

103 (R/B)

Ground

No

SGIA0441E