Infiniti QX56 (JA60). Manual - part 12

B2118 TILT SENSOR

ADP-39

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

ADP

N

O

P

1. Turn ignition switch OFF.

2. Check voltage between automatic drive positioner connector

and ground.

Is the inspection result normal?

YES

>> Tilt sensor circuit is OK.

NO

>> GO TO 3

3.

 CHECK HARNESS CONTINUITY

1. Disconnect automatic drive positioner control unit and tilt motor

assembly. 

2. Check continuity between automatic drive positioner connector

M33 (A), M34 (B) terminals 7, 33, 41 and tilt motor assembly

connector M85 (C) terminals 2, 3, 4.

3. Check continuity between automatic drive positioner control unit

connectors M33 (A), M34 (B) terminals 7, 33, 41 and ground.

Is the inspection result normal?

YES

>> Replace tilt motor assembly. Refer to 

ST-19, "Removal

and Installation"

.

NO

>> Repair or replace harness.

4.

 CHECK DOOR MIRROR OPERATION

1. Connect automatic drive positioner control unit and tilt motor assembly.

2. Turn ignition switch ON.

3. Check door mirror operation with memory function.
Is the operation normal?

YES

>> Replace tilt motor assembly. Refer to 

ST-19, "Removal and Installation"

.

NO

>> GO TO 5

5.

 CHECK INTERMITTENT INCIDENT

Refer to 

GI-38, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace automatic drive positioner control unit. Refer to 

ADP-175, "Removal and Installation"

.

NO

>> Repair or replace the malfunctioning part.

Connector

Terminals

Condition

Voltage (V) 

(Approx.)

(+)

(-)

M33

7

Ground

Tilt top position

2

Tilt bottom position

4

LIIA0485E

7 - 3

: Continuity should exist.

33 - 2

: Continuity should exist.

41 - 4

: Continuity should exist.

7 - Ground

: Continuity should not exist.

33 - Ground

: Continuity should not exist.

41 - Ground

: Continuity should not exist.

ALJIA0291ZZ

ADP-40

< COMPONENT DIAGNOSIS >

B2120 ADJ PEDAL SENSOR

B2120 ADJ PEDAL SENSOR

Description

INFOID:0000000005147468

• The pedal adjusting sensor is installed in the pedal assembly.

• The resistance of pedal adjusting sensor is changed according to the forward/backward position of pedal

assembly.

• The terminal voltage of automatic drive positioner control unit will be changed according to a change of

pedal adjusting sensor resistance. Automatic drive positioner control unit calculates the pedal assembly

position from the voltage.

DTC Logic

INFOID:0000000005147469

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

 STEP 1

Turn ignition switch ON.

>> GO TO 2

2.

 STEP 2

Check “Self diagnostic result” with CONSULT-III.
Is the DTC is detected? 

YES

>> Perform diagnosis procedure. Refer to 

ADP-40, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000005147470

Regarding Wiring Diagram information, refer to 

ADP-138, "Wiring Diagram"

.

1.

 CHECK PEDAL ADJUSTING SENSOR SIGNAL

1. Turn ignition switch ON.

2. Select “PEDAL SEN” in “Data monitor” mode with CONSULT-III. 

3. Check the pedal adjusting sensor signal under the following condition. 

Is the value normal?

YES

>> Pedal adjusting circuit is OK.

NO

>> GO TO 2

2.

 CHECK PEDAL ADJUSTING SENSOR CIRCUIT HARNESS CONTINUITY

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2120

ADJ PEDAL SENSOR

The input voltage of pedal adjusting sensor is 0.5V 
or less or 4.5V or higher, for 0.5 seconds or more.

• Harness and connectors

(Pedal adjusting sensor circuit is 
opened/shorted, pedal adjusting 
sensor power supply circuit is 
opened/shorted.)

• Pedal adjusting sensor

Monitor item

Condition

Value

PEDAL SEN

Pedal position

Forward

0.5V

Backward

4.5V

B2120 ADJ PEDAL SENSOR

ADP-41

< COMPONENT DIAGNOSIS >

C

D

E

F

G

H

I

K

L

M

A

B

ADP

N

O

P

1. Disconnect automatic drive positioner control unit and pedal

adjusting motor assembly. 

2. Check continuity between automatic drive positioner connector

M33 (A), M34 (C) terminals 8, 33, 41 and pedal adjusting motor

assembly connector E110 (B) terminals 3, 4, 5.

3. Check continuity between automatic drive positioner control unit

connector M33 (A), M34 (C) terminals 8, 33, 41 and ground.

Is the inspection result normal?

YES

>> Replace pedal adjusting motor assembly. Refer to 

ADP-

178, "Removal and Installation"

.

NO

>> Repair or replace harness.

8 - 4

: Continuity should exist.

33 - 3

: Continuity should exist.

41 - 5

: Continuity should exist.

8 - Ground

: Continuity should not exist.

33 - Ground

: Continuity should not exist.

41 - Ground

: Continuity should not exist.

ALJIA0327ZZ

ADP-42

< COMPONENT DIAGNOSIS >

B2126 DETENT SW

B2126 DETENT SW

Description

INFOID:0000000005147471

• Park position switch is installed on A/T shift selector. It is turned OFF when the A/T selector lever is in P

position.

• The driver seat control unit judges that the A/T selector lever is in P position if continuity does not exist in this

circuit.

DTC Logic

INFOID:0000000005147472

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

 STEP 1

Drive the vehicle at 7

±4km/h or more.

>> GO TO 2

2.

 STEP 2

Check “Self diagnostic result” with CONSULT-III.
Is the DTC detected? 

YES

>> Perform diagnosis procedure. Refer to 

ADP-42, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000005147473

Regarding Wiring Diagram information, refer to 

ADP-119, "Wiring Diagram"

.

1.

 CHECK DTC

Check “Self diagnostic result” for BCM with CONSULT-lll.
Are other DTCs detected?

YES

>> Check the DTC.

NO

>> GO TO 2

2.

 CHECK DETENTION SWITCH SIGNAL

1. Turn ignition switch ON.

2. Select “DETENT SW” in “Data Monitor” mode with CONSULT-lll.

3. Check detention switch signal under the following condition. 

Is the status normal?

YES

>> A/T shift selector (park position switch) circuit is OK.

DTC No.

Trouble diagnosis 

name

DTC detecting condition

Possible cause

B2126

DETENT SW

A/T selector lever is in P position and the vehicle 
speed of 7

±4km/h is detected.

• Harness and connectors

(Park position switch circuit is 
opened/shorted.)

• Park position switch
• Combination meter

(CAN communication )

Monitor item

Condition

Status

DETENT SW

A/T selector lever

P position

OFF

Other than above

ON