Infiniti F50. Manual - part 769

AUTOMATIC DRIVE POSITIONER

SE-67

C

D

E

F

G

H

J

K

L

M

A

B

SE

Rear Lifting Sensor Circuit Inspection

EIS0041W

1. 

CHECK REAR LIFTING SENSOR INPUT/OUTPUT SIGNAL

1.

Turn ignition switch OFF.

2.

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

OK or NG

OK

>> System is OK.

NG

>> GO TO 2.

2. 

CHECK REAR 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 part and check again.

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 con-
nector 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 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

PIIA4146E

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.

PIIA4142E

SE-68

AUTOMATIC DRIVE POSITIONER

Detention Switch Circuit Inspection

EIS0041X

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-50

 .

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 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 A/T device (detention switch) connector.

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

AUTOMATIC DRIVE POSITIONER

SE-69

C

D

E

F

G

H

J

K

L

M

A

B

SE

4. 

CHECK DETENTION SWITCH SIGNAL HARNESS

1.

Disconnect BCM connector.

2.

Check continuity between BCM connector M4 terminal 8 (G/OR) and A/T device (detention switch) con-
nector M97 terminal 7 (G/OR).

3.

Check continuity harness between BCM connector M4 terminal
8 (G/OR) and ground.

OK or NG

OK

>> Replace BCM.

NG

>> Repair or replace harness between BCM and A/T device

(detention switch).

Telescopic Sensor Circuit Inspection

EIS0041Y

1. 

CHECK STEERING WHEEL TILT MECHANISM

Check the operation malfunction caused by sTeering wheel tilt mechanism deformation or parts are loose.

OK or NG

OK

>> GO TO 2.

NG

>> Repair the malfunctioning part and check again.

2. 

CHECK FUNCTION

With CONSULT-II

Operate the telescopic switch with "TELESCO SEN" on the DATA
MONITOR to check that the voltage changes.

Without CONSULT-II

1.

Turn ignition switch OFF.

2.

Check voltage between BCM connector and ground.

OK or NG

OK

>> System is OK.

NG

>> GO TO 3.

8 (G/OR) – 7(G/OR)

: Continuity should exist.

8 (G/OR) – Ground

: Continuity should not exist.

PIIA3283E

Monitor item [OPERA-

TION or UNIT]

Contents

TELESCO
SEN

"V"

The telescoping position (voltage) judged from the tele-
scoping sensor signal is displayed.

PIIA0295E

Connector

Terminals

 (Wire color)

Condition

Voltage (V) 

(Approx.)

(+)

(–)

M4

62 (P/B)

Ground

Telescopic
top position

2

Telescopic 
bottom position

4

PIIA0296E

SE-70

AUTOMATIC DRIVE POSITIONER

3. 

CHECK HARNESS CONTINUITY

1.

Disconnect BCM connector and telescopic sensor  connector. 

2.

Check continuity harness between BCM connector M4 terminals 53 (L/W), 54 (LG/B), 62 (P/B) and tele-
scopic sensor connector M59 terminals 1 (LG/B), 2 (P/B), 3 (L/W).

3.

Check continuity harness between BCM connector M59 termi-
nals 53 (L/W), 54 (LG/B), 62 (P/B) and ground.

OK or NG

OK

>> Replace telescopic sensor.

NG

>> Repair or replace harness between BCM and telescopic sensor.

Tilt Sensor Circuit Inspection

EIS0041Z

1. 

CHECK TILT STEERING MECHANISM

Check the operation malfunction caused by steering wheel tilt melanism deformation or parts are loose. 

OK or NG

OK

>> GO TO 2.

NG

>> Repair the malfunctioning part and check again.

2. 

CHECK FUNCTION

With CONSULT-II

With "TILT SEN" on the DATA MONITOR, operate the tilt switch to
check that the voltage changes.

Without CONSULT-II

1.

Turn ignition switch OFF.

2.

Check voltage between BCM connector and ground.

OK or NG

OK

>> System is OK.

NG

>> GO TO 3.

53 (L/W) – 3 (L/W)

: Continuity should exist.

54(LG/B) – 1 (LG/B)

: Continuity should exist.

62 (P/B) – 2 (P/B)

: Continuity should exist.

53 (L/W) – Ground

: Continuity should not exist.

54 (LG/B) – Ground

: Continuity should not exist.

62 (P/B) – Ground

: Continuity should not exist.

PIIA3284E

Monitor item [OPERA-

TION or UNIT]

Contents

TILT SEN

"V"

The tilt position (voltage) judged from the tilt sensor sig-
nal is displayed.

PIIA0295E

Connector

Terminals 

(Wire color)

Condition

Voltage (V) 

(Approx.)

(+)

(–)

M4

46 (P/L)

Ground

Tilt top position

2

Tilt bottom position

4

PIIA0299E