Infiniti M45 (Y34). Manual - part 764

AUTOMATIC DRIVE POSITIONER

SE-77

C

D

E

F

G

H

J

K

L

M

A

B

SE

2. 

CHECK SEAT MEMORY SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect seat memory switch connector.

3.

Operate the setting switch and memory switch.

4.

Check continuity between seat memory switch connector and body ground.

OK or NG

OK

>> GO TO 3.

NG

>> Replace seat memory switch.

3. 

CHECK HARNESS CONTINUITY

1.

Disconnect BCM connector.

2.

Check continuity between BCM connector M4 terminals 39 (G),
43 (OR/L), 50 (P/L) and seat memory switch connector D3 ter-
minals 1 (G), 2 (OR/L), 3 (P/L).

3.

Check continuity between BCM connector M4 terminals 39 (G),
43 (OR/L), 50 (P/L) and body ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness between BCM and seat memory switch.

4. 

CHECK SEAT MEMORY SWITCH GROUND CIRCUIT

Check continuity at harness between seat memory switch D3 termi-
nal 4 (B) and body ground.

OK or NG

OK

>> Replace BCM.

NG

>> Repair or replace harness between seat memory switch

and body ground.

Terminals

 (Wire color)

Condition

Continuity

Con–

nector

Terminal

D3

3 (P/L)

4 (B)

Set switch: ON

Continuity should exist

Set switch: OFF

Continuity should not exist

1 (G)

Memory switch 1 ON

Continuity should exist

Memory switch 1: OFF

Continuity should not exist.

2 (OR/

L)

Memory switch 2: ON

Continuity should exist

Memory switch 2: OFF

Continuity should not exist.

PIIA3291E

39 (G) – 1 (G)

: Continuity should exist.

43 (OR/L) – 2 (OR/L)

: Continuity should exist.

50 (P/L) – 3 (P/L)

: Continuity should exist.

39 (G) – Ground

: Continuity should not exist.

43 (OR/L) – Ground

: Continuity should not exist.

50 (P/L) – Ground

: Continuity should not exist.

PIIA3292E

4 (B) – Ground

: Continuity should exist. 

PIIA3293E

SE-78

AUTOMATIC DRIVE POSITIONER

Seat Sliding Switch Circuit Inspection

AIS001KD

1. 

CHECK FUNCTION

With CONSULT-II

With “SLIDE SW–FR,SLIDE SW–RR” on the DATA MONITOR, oper-
ate the sliding switch to check ON/OFF operation.

Without CONSULT-II

Carry out “SWITCH MONITOR” in the self-diagnosis function, and operate the sliding switch to check. Refer to

SE-49, "SWITCH MONITOR"

 .

OK or NG

OK

>> Replace the driver seat control unit.

NG

>> GO TO 2.

2. 

CHECK SLIDING SWITCH INPUT/OUTPUT

1.

Turn ignition switch OFF.

2.

Check voltage between driver seat control unit connector and body ground.

OK or NG

OK

>> Syatem is OK.

NG

>> GO TO 3.

Monitor item [OPER-

ATION or UNIT]

Contents

SLIDE SW–
FR

"ON/

OFF"

ON / OFF status judged from the sliding switch (FR) sig-
nal is displayed.

SLIDE SW–
RR

"ON/

OFF"

ON / OFF status judged from the sliding switch (RR) sig-
nal is displayed.

PIIA0313E

Terminals

 (Wire color)

Condition

Voltage (V) 

(Approx)

Connector

Terminal

(+)

(–)

B143

17 (Y/R)

Ground

Sliding switch 
ON(FR operation)

0

Sliding switch OFF

5

23 (G/W)

Sliding switch 
ON(RR operation)

0

Sliding switch OFF

5

PIIA3294E

AUTOMATIC DRIVE POSITIONER

SE-79

C

D

E

F

G

H

J

K

L

M

A

B

SE

3. 

CHECK HARNESS CONTINUITY

1.

Disconnect driver seat control unit connector and power seat switch (driver side) connector .

2.

Check continuity between driver seat control unit connector
B143 terminals 17 (Y/R), 23 (G/W) and driver power seat switch
connector B144 terminals 17 (Y/R), 23 (G/W).

3.

Check continuity between driver seat control unit connector
B143 terminals 17(Y/R), 23 (G/W) and body ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness between driver seat control unit and power seat switch.

4. 

CHECK SLIDING SWITCH

Check continuity between driver seat switch.

OK or NG

OK

>> CO TO 5.

NG

>> Replace driver power seat switch.

5. 

CHECK POWER SEAT SWITCH GROUND CIRCUIT

Check continuity between power seat switch (driver side) connector
B144 terminal 14 (B/W) and body ground.

OK or NG

OK

>> Check the harness and connector.

NG

>> Repair or replace harness between driver seat control

unit and ground.

17 (Y/R) – 17 (Y/R)

: Continuity should exist.

23 (G/W) – 23 (G/W)

: Continuity should exist.

17 (Y/R) – Ground

: Continuity should not exist.

23 (G/W) – Ground

: Continuity should not exist.

PIIA3295E

Terminals

 (Wire color)

Condition

Continuity

Connector

Terminal

(+)

(–)

B143

17 (Y/R)

14 (B/W)

Sliding switch 
ON(FR operation)

Yes

Sliding switch OFF

No

23 (G/W)

Sliding switch 
ON(RR operation)

Yes

Sliding switch OFF

No

PIIA4477E

14 (B/W) – Ground

: Continuity should exist.

PIIA3297E

SE-80

AUTOMATIC DRIVE POSITIONER

Seat Reclining Switch Inspection

AIS001KE

1. 

CHECK FUNCTION

With CONSULT-II

With “RECLINING SW–FR, RECLINING SW–RR” on the DATA
MONITOR, operate the reclining switch to check ON/OFF operation.

Without CONSULT-II

Carry out “SWITCH MONITOR” in the self-diagnosis function, and operate the reclining switch to check. Refer
to 

SE-49, "SWITCH MONITOR"

 .

OK or NG

OK

>> Replace the driver seat control unit.

NG

>> GO TO 2.

2. 

RECLINING SWITCH INPUT/OUTPUT INSPECTION

1.

Turn ignition switch OFF.

2.

Check voltage between driver seat control unit connector and
body ground.

OK or NG

OK

>> System is OK.

NG

>> GO TO 3.

Monitor item [OPERA-

TION or UNIT]

Contents

RECLN SW
–FR

"ON/

OFF"

ON / OFF status judged from the reclining switch (FR) 
signal is displayed.

RECLIN S
W–RR

"ON/

OFF"

ON / OFF status judged from the reclining switch (RR) 
signal is displayed.

PIIA0313E

Terminals 

(Wire color)

Condition

Voltage (V) 

(Approx)

Connector

Terminal

(+)

(–)

B143

18 (GY/B)

Ground

Reclining switch ON 
(FR operation)

0

Reclining switch 
OFF

5

24 (SB)

Reclining switch ON 
(RR operation)

0

Reclining switch 
OFF

5

PIIA3299E