Infiniti Q45 (FY33). Manual - part 368

Diagnostic

procedure

EL-474

EL-475

EL-476

EL-477

EL-478

EL-479

EL-480

EL-481

EL-482

EL-484

EL-485

EL-485

EL-292

DIAGNOSTIC PROCEDURE 11
(Sliding motor check)

DIAGNOSTIC PROCEDURE 12
(Reclining motor check)

DIAGNOSTIC PROCEDURE 13
[Lifting motor (front) check]

DIAGNOSTIC PROCEDURE 14
[Lifting motor (rear) check]

DIAGNOSTIC PROCEDURE 15
(Lifting limit switch check)

DIAGNOSTIC PROCEDURE 16
(Tilt/telescopic switch check)

DIAGNOSTIC PROCEDURE 17
(Power seat switch check)

DIAGNOSTIC PROCEDURE 18
(Cancel switch check)

DIAGNOSTIC PROCEDURE 19
(Key, detention, door switch and
vehicle speed sensor check)

DIAGNOSTIC PROCEDURE 20
(Seat memory switch check)

DIAGNOSTIC PROCEDURE 21
(Memory indicator check)

DIAGNOSTIC PROCEDURE 22
(Lumber support check)

Wake-up Diagnosis for LCU05

X

X

XX

XX

X

X

(ACC,

ON

ST
AR
T

signal)

XX

X

(IGN

ON

signal)

X

XX

XX

XX

XX

X

X

X

X

X

GI

MA

EM

LC

EC

FE

AT

PD

FA

RA

BR

ST

RS

BT

HA

IDX

AUT

OMA

TIC

DRIVE

POSITIONER

—
IVMS

T

rouble

Diagnoses

(Cont’d)

EL-463

SEL981U

DIAGNOSTIC PROCEDURE 1
(Power supply and ground circuit for LCU05)

Power supply circuit check

Check voltage between LCU05 terminal

q

16

and ground.

(Refer to wiring diagram in EL-451.)

Terminals

Ignition switch position

OFF

ACC

ON

START

q

16

- Ground

Battery voltage

If NG, check the following.

I

40A fusible link (letter h, located in the fuse, fusible and relay
box)

I

Circuit breaker-2

I

Harness for open or short between circuit breaker-2 and
LCU05

I

Harness for open or short between fuse and circuit breaker-2

SEL982U

Ground circuit check

Check continuity between LCU05 terminal

q

14

and ground.

(Refer to wiring diagram in EL-451.)

Terminals

Continuity

q

14

- Ground

Yes

AUTOMATIC DRIVE POSITIONER — IVMS

Trouble Diagnoses (Cont’d)

EL-464

SEL983U

DIAGNOSTIC PROCEDURE 2
(Power supply and ground circuit for tilt/telescopic
motor)

Power supply circuit check

Check voltage between BCM terminal

104

and ground.

(Refer to wiring diagram in EL-450.)

Terminals

Ignition switch position

OFF

ACC

ON

START

104

- Ground

Battery voltage

If NG, check the following.

I

40A fusible link (letter h, located in the fuse, fusible and relay
box)

I

Circuit breaker-2

I

Harness for open or short between circuit breaker-2 and BCM

I

Harness for open or short between fuse and circuit braker-2

SEL984U

Ground circuit check

Check continuity between BCM terminal

114

and ground.

(Refer to wiring diagram in EL-447.)

Terminals

Continuity

114

- Ground

Yes

GI

MA

EM

LC

EC

FE

AT

PD

FA

RA

BR

ST

RS

BT

HA

IDX

AUTOMATIC DRIVE POSITIONER — IVMS

Trouble Diagnoses (Cont’d)

EL-465

SEL543W

DIAGNOSTIC PROCEDURE 3
(Tilt sensor check)

SEL986U

SEL987U

SEL988U

CHECK TILT SENSOR INPUT SIGNAL.

CONSULT-II

See “TILT SEN” in DATA MONITOR
mode.
Steering column in the uppermost posi-
tion:

Approx. 2V

Steering column in the lowermost position:

Approx. 4V

-------------------------------------------------------------------------------------------------------------------------------------- OR --------------------------------------------------------------------------------------------------------------------------------------

TESTER

Check voltage between BCM terminals

q

46

and

q

53

.

Refer to wiring diagram in EL-450.

NG

E

OK

Tilt sensor is OK.

CHECK TILT SENSOR OPEN CIRCUIT.
1. Disconnect BCM connector and tilt sen-

sor connector.

2. Check harness continuity between BCM

connector and tilt sensor connector.

OK

E

NG

Repair harness.

CHECK TILT SENSOR SHORT CIRCUIT.
Check harness continuity between BCM
connector terminals and ground.

OK

E

NG

Repair harness.

Replace tilt sensor.

Steering column position

Voltage V

Uppermost

Approx. 2

Lowermost

Approx. 4

Terminals

Continuity

BCM

Tilt sensor

q

54

q

1

Yes

q

46

q

2

q

53

q

3

Terminals

Continuity

q

54

- ground

No

q

46

- ground

q

53

- ground

AUTOMATIC DRIVE POSITIONER — IVMS

Trouble Diagnoses (Cont’d)

H

H

H

EL-466