Infiniti M45 (Y34). Manual - part 763

AUTOMATIC DRIVE POSITIONER

SE-73

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6. 

CHECK HARNESS CONTINUITY

1.

Disconnect key switch and key lock solenoid connector and BCM connector.

2.

Check continuity between key switch and key lock solenoid connector M64 terminal 4 (PU/W) and BCM
connector M4 terminal 69 (PU/W).

3.

Check continuity between key switch and key lock solenoid con-
nector M64 terminal 4 (PU/W) and body ground.

OK or NG

OK

>> Check the harness and connector.

NG

>> Repair or replace harness between key switch and key

lock solenoid and BCM.

Front Door Switch (Driver Side) Circuit Inspection

AIS001KA

1. 

CHECK FUNCTION

With CONSULT-II

With “DOOR SW DR” on the DATA MONITOR, check ON/OFF oper-
ation when the driver door is open and closed.

Without CONSULT-II

Carry out “SWITCH MONITOR” in the self-diagnosis function, and open and close the driver door to check.
Refer to 

SE-49

 .

OK or NG

OK

>> System is OK.

NG

>> GO TO 2.

4 (PU/W) – 69 (PU/W)

: Continuity should exist.

4 (PU/W) – Ground

: Continuity should not exist.

PIIA3287E

Monitor item [OPERA-

TION or UNIT]

Contents

DOOR SW
DR

ON/

OFF

Door open (ON)/door closed (OFF) status judged from 
the driver door switch is displayed.

PIIA0291E

SE-74

AUTOMATIC DRIVE POSITIONER

2. 

CHECK FRONT DOOR SWITCH (DRIVER SIDE)

1.

Turn ignition switch OFF.

2.

Disconnect front door switch connector.

3.

Check continuity between driver door switch connector and ground part of door switch.

OK or NG

OK

>> GO TO 3.

NG

>> Replace driver door switch.

3. 

CHECK HARNESS CONTINUITY

1.

Disconnect BCM connector.

2.

Check continuity between BCM connector M4 terminal 142 (R/
Y) and front door switch connector B20 terminal 1 (R/Y).

3.

Check continuity between BCM connector M4 terminal 142 (R/
Y) and body ground.

OK or NG

OK

>> Replace BCM.

NG

>> Repair or replace harness between BCM and front door

switch (driver side).

Vehicle Speed Signal Inspection

AIS001KB

1. 

CHECK SYMPTOM

Check that the speedometer in the combination meter operates normally.

OK or NG

OK

>> GO TO 2.

NG

>> Check vehicle speed signal. Refer to 

DI-122, "Vehicle Speed Signal Inspection"

 . 

Connec-

tor

Terminals

 (Wire color)

Condition

Continuity

(+)

(–)

B20

1

Ground part of 

door switch

With the front door 
switch (driver side) 
pressed

No

With the front door 
switch (driver side) 
released

Yes

PIIA3351E

142 (R/Y) – 1 (R/Y)

: Continuity should exist.

142 (R/Y) – Ground

: Continuity should not exist.

PIIA3346E

AUTOMATIC DRIVE POSITIONER

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2. 

CHECK FUNCTION

With CONSULT-II

With “VHCL SPEED SE” on the DATA MONITOR, Check vehicle
speed signal.

Without CONSULT-II

Carry out the self-diagnosis. Refer to 

SE-51, "ON BOARD DIAGNOSIS FOR AUTOMATIC DRIVE POSI-

TIONER"

 .

OK or NG

OK

>> System is OK.

NG

>> GO TO 3.

3. 

CHECK VEHICLE SPEED INPUT/OUTPUT

1.

Start the engine.

2.

Check signal between BCM connector and body ground, with
oscilloscope.

OK or NG

OK

>> Replace BCM.

NG

>> GO TO 4.

Monitor item [OPERA-

TION or UNIT]

Contents

VHCL
SPEED SE

"<7km/

>7km"

The present vehicle speed (less than 7 km/h (4 MPH), or 
7 km/h (4 MPH) or higher) is displayed.

PIIA0291E

Connector

Terminals 

(Wire color)

Condition

Signal

(+)

(–)

M4

49 (PU/W)

Ground

Vehicle 
speed is 
approx.40 
km/h (25 
MPH)

PIIA3289E

PIIA3279E

SE-76

AUTOMATIC DRIVE POSITIONER

4. 

CHECK HARNESS CONTINUITY

1.

Turn ignition switch OFF.

2.

Disconnect BCM and combination meter connector.

3.

Check continuity between BCM connector M4 terminal 49 (PU/
W) and combination meter connector M41 terminal 38 (PU/W).

4.

Check continuity between BCM connector M4 terminal 49 (PU/
W) and body ground.

OK or NG

OK

>> Check meter control unit, refer to 

DI-6, "COMBINATION

METERS"

 .

NG

>> Repair or replace harness between BCM and combina-

tion meter.

Seat Memory Switch Circuit Inspection

AIS001KC

1. 

CHECK FUNCTION

With CONSULT-II

With “SET SW, MEMORY SW1, MEMORY SW2” on the DATA
MONITOR, operate the switch to check ON/OFF operation. 

Without CONSULT-II

Carry out “switch monitor” in the self-diagnosis function, and operate “Setting switch, memory switch 1, mem-
ory switch 2” to check. Refer to 

SE-49, "SWITCH MONITOR"

 .

OK or NG

OK

>> System is OK.

NG

>> GO TO 2.

49 (PU/W) – 38 (PU/W)

: Continuity should exist.

49 (PU/W) – Ground

: Continuity should not exist.

PIIA3290E

Monitor item [OPERATION or 

UNIT]

Contents

MEMORY SW1

"ON/OFF"

ON / OFF status judged from the seat 
memory switch 1 signal is displayed.

MEMORY SW2

"ON/OFF"

ON / OFF status judged from the seat 
memory switch 2 signal is displayed.

SET SW

"ON/OFF"

ON/OFF status judged from the setting 
switch signal is displayed.

PIIA0309E