Infiniti QX56 (Z62). Manual - part 603

 

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Infiniti QX56 (Z62). Manual - part 603

 

 

EC-390

< DTC/CIRCUIT DIAGNOSIS >

[VK56VD]

P1090, P1093 VVEL ACTUATOR MOTOR

P1090, P1093 VVEL ACTUATOR MOTOR

DTC Logic

INFOID:0000000006217896

DTC DETECTION LOGIC

NOTE:
If DTC P1090 or P1093 is displayed with DTC P1091, first perform the trouble diagnosis for DTC P1091.
Refer to 

EC-393, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is 10 V or more at idle.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start engine and let it idle for 10 second.

2.

Keep the engine speed at approximately 3,500 rpm for at least 10 seconds under no load.

3.

Check DTC.

Is DTC detected?

YES

>> Go to 

EC-390, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006217897

1.

VVEL ACTUATOR MOTOR ASSEMBLY OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Disconnect VVEL control module harness connector.

2.

Disconnect VVEL actuator motor assembly harness connector.

3.

Check the continuity between VVEL control module harness connector and VVEL actuator motor assem-
bly harness connector.

DTC No.

Trouble diagnosis name

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P1090

VVEL ACTR MOT-B1
[VVEL system performance 
(bank 1)]

• Event angle difference between the 

actual and the target is detected.

• Abnormal current is sent to VVEL 

actuator motor assembly.

• Harness or connectors

(VVEL actuator motor assembly circuit is open 
or shorted.)

• VVEL actuator motor assembly
• VVEL actuator housing assembly
• VVEL ladder assembly
• VVEL control module

P1093

VVEL ACTR MOT-B2
[VVEL system performance 
(bank 2)]

DTC No.

VVEL control module

VVEL actuator motor assembly

Continuity

Bank

Connector

Terminal

Connector

Terminal

P1090

1

F56

12

F73

1

Existed

2

Not existed

25

1

Not existed

2

Existed

P1093

2

2

F71

1

Existed

2

Not existed

15

1

Not existed

2

Existed

P1090, P1093 VVEL ACTUATOR MOTOR

EC-391

< DTC/CIRCUIT DIAGNOSIS >

[VK56VD]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

4.

Also check harness for short to ground and power.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

DETECT MALFUNCTIONING PART

Check the following.
• Harness for open or short between VVEL actuator motor assembly and VVEL control module
• Loose or poor connection for each connector and harness

>> Repair open circuit, short to ground or short to power in harness or connectors.

3.

CHECK VVEL ACTUATOR MOTOR ASSEMBLY

Refer to 

EC-392, "Component Inspection (VVEL ACTUATOR MOTOR ASSEMBLY)"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

REPLACE VVEL ACTUATOR MOTOR ASSEMBLY

Replace VVEL actuator motor assembly. Refer to 

EM-75, "Removal and Installation"

.

>> INSPECTION END

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace.

6.

REPLACE VVEL CONTROL MODULE

1.

Replace VVEL control module.

2.

Perform additional service when replacing VVEL control module. Refer to 

EC-144, "Work Procedure"

.

>> GO TO 7.

7.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Erase DTC.

3.

Perform DTC Confirmation Procedure.
See 

EC-390, "DTC Logic"

.

Is the DTC P1090 or P1093 displayed again?

YES

>> GO TO 8.

NO >> INSPECTION 

END

8.

CHECK VVEL ACTUATOR HOUSING ASSEMBLY

Refer to 

EC-392, "Component Inspection (VVEL ACTUATOR MOTOR ASSEMBLY)"

.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> GO TO 9.

9.

REPLACE VVEL ACTUATOR HOUSING ASSEMBLY

Replace VVEL actuator housing assembly. Refer to 

EM-75, "Removal and Installation"

.

>> INSPECTION END

10.

CHECK VVEL LADDER ASSEMBLY

Refer to 

EM-77, "Inspection"

.

EC-392

< DTC/CIRCUIT DIAGNOSIS >

[VK56VD]

P1090, P1093 VVEL ACTUATOR MOTOR

Is the inspection result normal?

YES

>> GO TO 12.

NO

>> GO TO 11.

11.

REPLACE VVEL LADDER ASSEMBLY

Replace VVEL ladder assembly.  Refer to 

EM-75, "Removal and Installation"

.

>> INSPECTION END

12.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection (VVEL ACTUATOR MOTOR ASSEMBLY)

INFOID:0000000006217898

1.

CHECK VVEL ACTUATOR MOTOR

1.

Turn ignition switch OFF.

2.

Disconnect VVEL actuator motor harness connector.

3.

Check resistance between VVEL actuator motor terminals as per the following.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE VVEL ACTUATOR SUB ASSEMBLY

Replace VVEL actuator sub assembly. Refer to 

EM-75, "Removal and Installation"

.

>> INSPECTION END

Component Inspection (VVEL ACTUATOR HOUSING ASSEMBLY)

INFOID:0000000006217899

1.

CHECK VVEL ACTUATOR HOUSING ASSEMBLY

1.

Turn ignition switch OFF.

2.

Remove VVEL actuator housing assembly. Refer to 

EM-75, "Removal and Installation"

.

3.

Turn the ball screw shaft to check that it works smoothly.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE VVEL ACTUATOR HOUSING ASSEMBLY

Replace VVEL actuator housing assembly. Refer to 

EM-75, "Removal and Installation"

.

>> INSPECTION END

VVEL actuator motor

Resistance

Terminal

1 and 2

16

Ω

 or less

P1091 VVEL ACTUATOR MOTOR RELAY

EC-393

< DTC/CIRCUIT DIAGNOSIS >

[VK56VD]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

P1091 VVEL ACTUATOR MOTOR RELAY

DTC Logic

INFOID:0000000006217900

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

1.

Turn ignition switch OFF and wait at least 10 seconds.

2.

Turn ignition switch ON.

3.

Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is 10 V or more at idle.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait at least 1 seconds.

2.

Turn ignition switch OFF and wait at least 10 seconds.

3.

Turn ignition switch ON and wait at least 1 seconds.

4.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Go to 

EC-393, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006217901

1.

VVEL ACTUATOR MOTOR RELAY POWER SUPPLY CIRCUIT-I

1.

Turn ignition switch OFF.

2.

Disconnect VVEL actuator motor relay.

3.

Check the voltage between VVEL actuator motor relay harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

DETECT MALFUNCTIONING PART

Check the following.
• 50A fusible link (letter O)
• Harness for open or short between VVEL actuator motor relay and battery

>> Repair open circuit, short to ground or short to power in harness or connectors.

DTC No.

Trouble diagnosis name

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P1091

VVEL ACTR MOT PWR
[VVEL actuator motor relay 
circuit]

• VVEL control module detects the VVEL 

actuator motor relay is stuck OFF.

• VVEL control module detects the VVEL 

actuator motor relay is stuck ON.

• Harness or connectors

(VVEL actuator motor relay circuit is open or 
shorted.)
(Abort circuit is open or shorted.)

• VVEL actuator motor relay
• VVEL control module
• ECM

VVEL actuator motor relay

Ground

Voltage

Connector

Terminal

E62

1

Ground

Battery voltage

3

 

 

 

 

 

 

 

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