Infiniti M35/M45 Y50. Manual — part 902

ACTIVE AFS

LT-153

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LT

Turn ignition switch OFF not to change the vehicle height. Then turn ignition switch ON and per-
form levelizer adjustment again.

●

When “ADJUSTMENT COMPLETE” is displayed, and “NO DTC IS DETECTED” is displayed on
self-diagnosis results, levelizer adjustment is completed.

●

When “ADJUSTMENT COMPLETE” is displayed, and “B2514 HI SEN UNUSUAL” is displayed on
self-diagnosis results, refer to

LT-175, "DTC B2514 HI SEN UNUSUAL RR"

.

7.

Touch “END”.

8.

Turn ignition switch OFF.

SELF-DIAG RESULTS
Operation Procedure

1.

Touch “ADAPTIVE LIGHT” on “SELECT SYSTEM” screen.

2.

Touch “SELF-DIAG RESULTS” on the “SELECT DIAG MODE” screen.

3.

Check display content in self-diagnostic results.

CAUTION:

DTC B2503 and B2504 cannot be detected before the swivel operation. Thus, perform swivel operation
first, and then check the display in self-diagnostic results.

Description of DTC and Solutions after Detection

CONSULT-II can detect DTC (Diagnosis trouble code). The descriptions and solutions of DTC are listed
below.

Details of

error

indication

detected by

CONSULT-

II

Conditions of error detection

Fail-safe

1. Swivel operation

2. Auto aiming operation

3. AFS OFF indicator operation

4. Cancellation

Reference

CAN
COMM CIR-
CUIT
[U1000]

Any of several items below have errors.

●

TRANSMIT DIAG

●

Reception from ECM

●

Reception from unified meter and A/C amp.

●

Reception from TCM

●

Reception from steering angle sensor

●

Reception from IPDM E/R

1. Stop the swivel motor RH and

LH when the malfunction
occurred.

2. Stop the aiming motors when the

malfunction occurred.

3. Flash at intervals of approx. 1

second when keeping error state
for 2 seconds or longer.

4. Turn ignition switch OFF.

LAN-50, "CAN
System Speci-
fication Chart"

.

CONTROL
UNIT (CAN)
[U1010]

AFS control unit malfunctions.

1. Stop the swivel motor RH and

LH when the malfunction
occurred.

2. Stop aiming motors when the

malfunction occurred.

3. Flash at intervals of approx. 1

second when keeping error state
for 2 seconds or longer.

4. Turn ignition switch OFF.

Replace
AFS control
unit.

LT-192

LT-154

ACTIVE AFS

SWIVEL
ACTUATOR
[RH]
[B2503]

Any of several statuses below

●

Large difference between swivel motor drive signal (swivel
angle command signal) transmitted by AFS control unit and
swivel position sensor signal (swivel angle feed back signal)
by swivel position sensor exists for 2 seconds or longer. Or
swivel position sensor signal does not change for 2 seconds
or longer even when AFS control unit transmit swivel motor
drive signal.

CAUTION:

Detects when swivel operating (excludes initialization).

●

Short or open circuit exists for 2 seconds or longer on one of
swivel motor circuits (AFS control unit terminals 11, 13, 32 or
34).

CAUTION:

Detects when swivel operating (excludes initialization).

●

Voltage of swivel position sensor power supply (AFS control
unit terminal 4) had more than 6 V or had less than 4 V for 2
seconds or longer.

●

Voltage of swivel position sensor signal (AFS control unit ter-
minal 9) had more than 4.75 V or had less than 0.25 V for 2
seconds or longer.

1. Stop the swivel motor RH and

LH when the malfunction
occurred.

2. Reduce approx. 2 V of the aim-

ing motor drive signal value from
that of when error is detected.

3. Flash at intervals of approx. 1

second when keeping error state
for 2 seconds or longer.

4. Turn ignition switch OFF.

LT-161, "DTC
B2503
SWIVEL
ACTUATOR
RH"

SWIVEL
ACTUATOR
[LH]
[B2504]

Any of several statuses below

●

Large difference between swivel motor drive signal (swivel
angle command signal) transmitted by AFS control unit and
swivel position sensor signal (swivel angle feed back signal)
by swivel position sensor exists for 2 seconds or longer. Or
swivel position sensor signal does not change for 2 seconds
or longer even when AFS control unit transmit swivel motor
drive signal.

CAUTION:

Detects when swivel operating (excludes initialization).

●

Short or open circuit exists for 2 seconds or longer on one of
swivel motor circuits (AFS control unit terminals 15, 17, 36 or
38).

CAUTION:

Detects when swivel operating (excludes initialization).

●

Voltage of swivel position sensor power supply (AFS control
unit terminal 24) had more than 6 V or had less than 4 V for 2
seconds or longer.

●

Voltage of swivel position sensor signal (AFS control unit ter-
minal 29) had more than 4.75 V or had less than 0.25 V for 2
seconds or longer.

1. Stop the swivel motor RH and

LH when the malfunction
occurred.

2. Reduce approx. 2 V of the aim-

ing motor drive signal value from
that of when error is detected.

3. Flash at intervals of approx. 1

second when keeping error state
for 2 seconds or longer.

4. Turn ignition switch OFF.

LT-168, "DTC
B2504
SWIVEL
ACTUATOR
LH"

HI SEN
UNUSUAL
[RR]
[B2514]

Any of several statuses below

●

Voltage of height sensor power supply (AFS control unit termi-
nal 6) had more than 6 V or had less than 4 V for 2 seconds or
longer.

●

Voltage of height sensor signal (AFS control unit terminal 28)
had more than 4.75 V or had less than 0.25 V for 2 seconds or
longer.

1. Normal operation

2. Stop aiming motors when the

malfunction occurred.

3. Remains OFF.

4. Turn ignition switch OFF.

LT-175, "DTC
B2514 HI SEN
UNUSUAL
RR"

Details of

error

indication

detected by

CONSULT-

II

Conditions of error detection

Fail-safe

1. Swivel operation

2. Auto aiming operation

3. AFS OFF indicator operation

4. Cancellation

Reference

ACTIVE AFS

LT-155

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LT

ST ANG
SEN SIG
[B2515]

Any of several statuses below

●

Cannot receive steering angle sensor signal.

●

Receives steering angle sensor error.

●

Receives steering angle sensor signal except

−

943

°

to +943

°

.

1. Back to the initial position.

2. Normal operation

3. Flash at intervals of approx. 1

second when keeping error state
for 2 seconds or longer.

4. Turn ignition switch OFF.

BRC-24, "Self-
Diagnosis"

.

If above sys-
tem is normal,
replace AFS
control unit.

SHIFT SIG
[P, R]
[B2516]

Cannot receive A/T position indicator signal.

1. Back to the initial position.

2. Normal operation

3. Flash at intervals of approx. 1

second when keeping error state
for 2 seconds or longer.

4. Turn ignition switch OFF.

AT-92, "SELF-
DIAGNOSTIC
RESULT
MODE"

.

If above sys-
tem is normal,
replace AFS
control unit.

VEHICLE
SPEED SIG
[B2517]

Cannot receive vehicle speed signal.

1. Back to the initial position.

2. Stop when the malfunction

occurred.

3. Flash at intervals of approx. 1

second when keeping error state
for 2 seconds or longer.

4. Turn ignition switch OFF.

DI-31, "SELF-
DIAG
RESULTS"

.

If above sys-
tem is normal,
replace AFS
control unit.

HEAD
LAMP SIG
[B2518]

Cannot receive low beam status signal.

1. Back to the initial position.

2. Stop aiming motors when the

malfunction occurred.

3. Flash at intervals of approx. 1

second when keeping error state
for 2 seconds or longer.

4. Turn ignition switch OFF.

PG-20,
"SELF-DIAG
RESULTS"

.

If above sys-
tem is normal,
replace AFS
control unit.

LEVEL-
IZER CALIB
[B2519]

Cannot recognize height sensor signal value at unloaded vehicle
position.

1. Normal operation

2. Stop aiming motors when the

malfunction occurred.

3. Remains OFF.

4. When levelizer adjustment is

completed

LT-152,
"WORK SUP-
PORT (LEV-
ELIZER
ADJUST-
MENT)"

ST ANGLE
SEN CALIB
[B2520]

Cannot recognize steering angle sensor neutral point (straight-
ahead position).

1. Back to the initial position.

2. Normal operation

3. Flash at intervals of approx. 1

second when keeping error state
for 2 seconds or longer.

4. When steering angle sensor

adjustment is completed

BRC-6,
"Adjustment of
Steering Angle
Sensor Neu-
tral Position"

.

Details of

error

indication

detected by

CONSULT-

II

Conditions of error detection

Fail-safe

1. Swivel operation

2. Auto aiming operation

3. AFS OFF indicator operation

4. Cancellation

Reference

LT-156

ACTIVE AFS

CAUTION:

●

If DTC relating to CAN communication [U1000] and other components are displayed at the same
time, diagnose CAN communication first.

●

Make sure of the normal operation after the parts (except AFS control unit) replacement according
to the self-diagnosis results. Delete the malfunction history.

Display Results

●

0: There is malfunction now.

●

1 – 39: Displays when it is normal at present and finds malfunction in the past. It increases in order
of 0

→

1

→

2...38

→

39 after returning to the normal condition whenever IGN OFF

→

ON. If it is over 39,

it is fixed to 39 until the self-diagnostic results are erased. It returns to 0 when malfunction is
detected again in the process.

ECU CIRC
[B2521]

Any of several statuses below

●

Short circuit exists for 2 seconds or longer on power supply
(approx. 12 V) or ground of swivel position sensor (RH) power
supply (AFS control unit terminal 4).

●

Short circuit exists for 2 seconds or longer on power supply
(approx. 12 V) of swivel position sensor (RH) signal (AFS con-
trol unit terminal 9).

●

Short circuit exists for 2 seconds or longer on power supply
(approx. 12 V) or ground of swivel position sensor (LH) power
supply (AFS control unit terminal 24).

●

Short circuit exists for 2 seconds or longer on power supply
(approx. 12 V) of swivel position sensor (LH) signal (AFS con-
trol unit terminal 29).

●

Short circuit exists for 2 seconds or longer on power supply
(approx. 12 V) or ground of height sensor power supply (AFS
control unit terminal 6).

●

Short circuit exists for 2 seconds or longer on power supply
(approx. 12 V) of height sensor signal (AFS control unit termi-
nal 28).

●

AFS control unit (RAM/ROM) malfunctions.

1. Stop the swivel motor RH and

LH when the malfunction
occurred.

2. Stop aiming motors when the

malfunction occurred.

3. Flash at intervals of approx. 1

second when keeping error state
for 2 seconds or longer.

4. Turn ignition switch OFF.

LT-179, "DTC
B2521 ECU
CIRC"

ECM SIG
[B2522]

Cannot receive engine speed signal.

1. Back to the initial position.

2. Stop when the malfunction

occurred.

3. Flash at intervals of approx. 1

second when keeping error state
for 2 seconds or longer.

4. Turn ignition switch OFF.

EC-126,
"SELF-DIAG
RESULTS
MODE"

.

If above sys-
tem is normal,
replace AFS
control unit.

AFS SIG
[B2523]

Cannot transmit AFS off indicator signal.

1. Back to the initial position.

2. Normal operation

3. Flashes at intervals of approx. 1

second when keeping error state
for 2 seconds or longer.

4. Turn ignition switch OFF.

Replace
AFS control
unit

LT-192

Details of

error

indication

detected by

CONSULT-

II

Conditions of error detection

Fail-safe

1. Swivel operation

2. Auto aiming operation

3. AFS OFF indicator operation

4. Cancellation

Reference