Infiniti QX56 (JA60). Manual - part 698

MWI

DTC B2205 VEHICLE SPEED CIRCUIT

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DTC B2205 VEHICLE SPEED CIRCUIT

Description

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The ABS actuator and electric unit (control unit) provides a vehicle speed signal to the combination meter via

CAN communication lines.

DTC Logic

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Diagnosis Procedure

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Symptom: Displays “VEHICLE SPEED CIRC [B2205]” as a self-diagnosis result of combination meter.

1.

CHECK COMBINATION METER INPUT SIGNAL

1. Start engine and select “METER/M&A” on CONSULT-III.

2. Using “SPEED METER” on “DATA MONITOR”, compare the value of DATA MONITOR with speedometer

pointer of combination meter. Speedometer and DATA MONITOR indications should be close.

Is the inspection result normal?

YES

>> Perform ABS actuator and electric unit (control unit) self-diagnosis. Refer to 

BRC-23, "CONSULT-

III Function (ABS)"

.

NO

>> Replace combination meter. Refer to 

MWI-100, "Removal and Installation"

.

DTC

CONSULT-III display

Detection condition

B2205

VEHICLE SPEED CIRC
[B2205]

Malfunction is detected when an erroneous speed signal is received for 2 seconds or more.

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POWER SUPPLY AND GROUND CIRCUIT

POWER SUPPLY AND GROUND CIRCUIT

COMBINATION METER
COMBINATION METER : Diagnosis Procedure

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Regarding Wiring Diagram information, refer to 

MWI-41, "Wiring Diagram"

.

1.

CHECK FUSES

Check for blown combination meter fuses.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

2.

POWER SUPPLY CIRCUIT CHECK

1. Disconnect combination meter connector M24.

2. Check voltage between combination meter harness connector

M24 terminals 21, 37, 40 and ground.

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Check harness for open between combination meter and fuse.

3.

GROUND CIRCUIT CHECK

1. Turn ignition switch OFF.

2. Disconnect combination meter connector M23.

3. Check continuity between combination meter harness connector

M23 terminal 47, 52 and ground, and connector M24 terminal 20

and ground.

Is the inspection result normal?

Unit

Power source

Fuse No.

Combination meter

Battery 3

Ignition switch ON or START 

14

Ignition switch ACC or ON

4

Terminals

Ignition switch position

(+)

(–)

OFF

ACC

ON

START

Connector

Terminal

M24

21

Ground

0V

0V

Battery 
voltage

Battery 
voltage

37

0V

Battery 
voltage

Battery

 voltage

0V

40

Battery
voltage

Battery
voltage

Battery
voltage

Battery 
voltage

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Terminals

Continuity

(+)

(–)

Connector

Terminal

A: M23

47

Ground

Yes

52

B: M24

20

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POWER SUPPLY AND GROUND CIRCUIT

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YES

>> Inspection End.

NO

>> Check ground harness.

BCM (BODY CONTROL MODULE)
BCM (BODY CONTROL MODULE) : Diagnosis Procedure

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Regarding Wiring Diagram information, refer to 

MWI-70, "Wiring Diagram"

.

1.

 CHECK FUSES AND FUSIBLE LINK

Check that the following fuses and fusible link are not blown.

Is the fuse blown?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit.

NO

>> GO TO 2

2.

 CHECK POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect BCM.

3. Check voltage between BCM harness connector and ground.

Is the measurement value normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK GROUND CIRCUIT

Terminal No.

Signal name

Fuses and fusible link No.

57

Battery power supply

22 (15A)

70

F (50A)

11

Ignition ACC or ON

4 (10A)

38

Ignition ON or START

59 (10A)

Connector

Terminals 

Power

source

Condition

Voltage (V) (Ap-

prox.)

(+)

(-)

M18

11

Ground

ACC 

power 

supply

Ignition 

switch 

ACC or 

ON

Battery voltage

38

Ground

Ignition 

power 

supply

Ignition 

switch ON 

or START

Battery voltage

M20

57

Ground

Battery 

power 

supply

Ignition 

switch 

OFF

Battery voltage

70

Ground

Battery 

power 

supply

Ignition 

switch 

OFF

Battery voltage

LIIA2415E

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POWER SUPPLY AND GROUND CIRCUIT

Check continuity between BCM harness connector and ground.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair or replace harness.

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) : Di-
agnosis Procedure

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Regarding Wiring Diagram information, refer to 

MWI-85, "Wiring Diagram"

.

1.

 CHECK FUSES AND FUSIBLE LINK

Check that the following IPDM E/R fuses or fusible link are not blown.

Is the fuse blown?

YES

>> Replace the blown fuse or fusible link after repairing the affected circuit.

NO

>> GO TO 2

2.

 CHECK BATTERY POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect IPDM E/R.

3. Check voltage between IPDM E/R harness connectors and

ground.

Is the measurement value normal?

YES

>> GO TO 3

NO

>> Repair or replace harness.

3.

 CHECK GROUND CIRCUIT

1. Turn ignition switch OFF.

BCM

Ground

Continuity

Connector

Terminal

M20

67

Yes

LIIA0915E

Terminal No.

Signal name

Fuses and fusible link No.

1

Battery

A, D

2

Battery

C

12

Ignition switch ON or START

59

Terminals

Ignition switch position

(+)

(

−)

OFF

ON

START

Connector

Terminal

E118 (A)

1

Ground

Battery
voltage

Battery
voltage

Battery
voltage

2

Battery
voltage

Battery
voltage

Battery
voltage

E119 (B)

12

0V

Battery
voltage

Battery
voltage

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