Infiniti M45 (Y34). Manual - part 761

 

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Infiniti M45 (Y34). Manual - part 761

 

 

AUTOMATIC DRIVE POSITIONER

SE-65

C

D

E

F

G

H

J

K

L

M

A

B

SE

Seat Reclining Sensor Circuit Inspection

AIS001K3

1. 

CHECK RECLINING SENSOR INPUT/OUTPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Check signal between driver seat control unit connector and
body ground, with oscilloscope.

OK or NG

OK

>> System is OK.

NG

>> GO TO 2.

2. 

CHECK RECLINING SENSOR MECHANISM

Check the operation malfunction caused by reclining mechanism deformation or parts are loose.

OK or NG

OK

>> GO TO 3.

NG

>> Repair the malfunctioning parts.

3. 

CHECK HARNESS CONTINUITY

1.

Disconnect driver seat control unit connector and reclining motor connector.

2.

Check continuity between driver seat control unit connector
B143 terminals 30 (L), 32 (R/W) and reclining motor connector
B147 terminals 30 (L), 32 (R/W).

3.

Check continuity between driver seat control unit connector
B143 terminals 30, 32 and body ground.

OK or NG

OK

>> Replace reclining motor.

NG

>> Repair or replace harness between driver seat control unit and reclining motor.

Connector

Terminals 

(Wire color)

Condition

Signal

(+)

(–)

B143

30 (L)

Ground

Reclining 
motor 
operation

PIIA3270E

SIIA0693J

30 (L) – 30 (L)

: Continuity should exist.

32 (R/W) – 32 (R/W)

: Continuity should exist.

30 (L) – Ground

: Continuity should not exist.

32 (R/W) – Ground

: Continuity should not exist.

PIIA3271E

SE-66

AUTOMATIC DRIVE POSITIONER

Front End Seat Lifting Sensor Circuit Inspection

AIS001K4

1. 

CHECK FRONT END LIFTING SENSOR INPUT/OUTPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Check signal between driver seat control unit connector and
body ground, with oscilloscope.

OK or NG

OK

>> System is OK.

NG

>> GO TO 2.

2. 

CHECK FRONT END LIFTING SENSOR MECHANISM

Check the operation malfunction caused by lifter mechanism deformation or parts are loose.
OK or NG

OK

>> GO TO 3.

NG

>> Repair the malfunctioning parts.

3. 

CHECK HARNESS CONTINUITY

1.

Disconnect driver seat control unit connector and front lifting motor connector.

2.

Check continuity between driver seat control unit connector B143 terminals 21 (Y/B), 32 (R/W) and front
lifting motor connector B148 terminals 21 (Y/B), 32B (R/W).

3.

Check continuity between driver seat control unit connector
B143 terminals 21 (Y/B), 32 (R/W) and body ground.

OK or NG

OK

>> Replace front lifting motor.

NG

>> Repair or replace harness between driver seat control

unit and front lifting motor.

Connector

Terminals

 (Wire color)

Condition

Signal

(+)

(–)

B143

21 (Y/B)

Ground

Front lift-
ing motor 
operation

PIIA3272E

SIIA0691J

21 (Y/B) – 21 (Y/B)

: Continuity should exist.

32 (R/W) – 32B (R/W)

: Continuity should exist.

21 (Y/B) – Ground

: Continuity should not exist.

32 (R/W) – Ground

: Continuity should not exist.

PIIA3273E

AUTOMATIC DRIVE POSITIONER

SE-67

C

D

E

F

G

H

J

K

L

M

A

B

SE

Rear End Lifting Sensor Circuit Inspection

AIS001K5

1. 

CHECK REAR END LIFTING SENSOR INPUT/OUTPUT SIGNAL

1.

Turn ignition switch OFF.

2.

Check signal between driver seat control unit connector body
ground, with oscilloscope.

OK or NG

OK

>> System is OK.

NG

>> GO TO 2.

2. 

CHECK REAR END LIFTING SENSOR MECHANISM

Check the malfunction caused by lifter mechanism deformation or parts are loose.
OK or NG

OK

>> GO TO 3.

NG

>> Repair the malfunctioning parts.

3. 

CHECK HARNESS CONTINUITY

1.

Disconnect driver seat control unit connector and rear lifting motor connector.

2.

Check continuity between driver seat control unit connector B143 terminals 31 (W/R), 32 (R/W) and rear
lifting motor connector B149 terminals 31 (W/R), 32C (R/W).

3.

Check continuity between driver seat control unit connector
B143 terminals 31 (W/R), 32 (R/W) and body ground.

OK or NG

OK

>> Replace rear lifting motor.

NG

>> Repair or replace harness between driver seat control

unit and rear lifting motor.

Connector

Terminals 

(Wire color)

Condition

Signal

(+)

(–)

B143

31 (W/R)

Ground

Rear lift-
ing motor 
operation

PIIA3274E

SIIA0693J

31 (W/R) – 31 (W/R)

: Continuity should exist.

32 (R/W) – 32C (R/W)

: Continuity should exist.

31 (W/R) – Ground

: Continuity should not exist.

32 (R/W) – Ground

: Continuity should not exist.

PIIA3275E

SE-68

AUTOMATIC DRIVE POSITIONER

Detention Switch Circuit Inspection

AIS001K6

1. 

CHECK FUNCTION

With CONSULT-II

Check that when the A/T selector lever is in P-position, “DETENT
SW” on the DATA MONITOR becomes ON.

Without CONSULT-II

Carry out “SWITCH MONITOR” in the self-diagnosis function, and operate the A/T selector lever to check.
Refer to 

SE-49

 .

OK or NG

OK

>> System is OK.

NG

>> GO TO 2.

2. 

CHECK DETENTION SWITCH POWER SUPPLY CIRCUIT HARNESS

1.

Turn ignition switch OFF.

2.

Disconnect A/T device (detention switch) connector and “key switch and key lock solenoid” connector.

3.

Check continuity harness between A/T device (detention switch)
connectorM97 terminal 6 (PU/W) and key switch and key lock
solenoid connector M64 terminal 4 (PU/W).

4.

Check continuity harness between A/T device (detention switch)
connectorM97 terminal 6 (PU/W) and body ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace harness between A/T device (deten-

tion switch) and key switch and key lock solenoid.

3. 

CHECK DETENTION SWITCH

Check continuity between detection switch.

OK or NG

OK

>> GO TO 4.

NG

>> Replace detention switch.

Monitor item

 [OPERATION or UNIT]

Contents

DETENT SW

ON/

OFF

The selector lever position "P position (ON)/other than P 
position (OFF)" judged from the detente switch signal is 
displayed.

PIIA0291E

6 (PU/W) – 4 (PU/W)

: Continuity should exist.

6 (PU/W) – Ground

: Continuity should not exist.

PIIA3276E

Connector

Terminals

 (Wire color)

Condition

Continuity

(+)

(–)

M97

6 (PU/W)

 7 (G/OR)

P–position

Continuity should not 

exist

Other than 
P–position

Continuity should  exist

PIIA3349E

 

 

 

 

 

 

 

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