Infiniti QX56 (Z62). Manual - part 403

DLK-78

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORK FLOW

GET INFORMATION FOR SYMPTOM

Get detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurred).

Check operation condition of the function that is malfunctioning.

>> GO TO 2.

CHECK FOR DTC

Check BCM for DTC.

Perform the following procedure if DTC is displayed.

Record DTC and freeze frame data (print them out with CONSULT-III).

Erase DTC.

Study the relationship between the cause detected by DTC and the symptom described by the customer.

Check related service bulletins for information.

Are any symptoms described or any DTC detected?

Symptom is described, DTC is displayed>>GO TO 3.
Symptom is described, DTC is not displayed>>GO TO 4.
Symptom is not described, DTC is displayed>>GO TO 5.

CONFIRM THE SYMPTOM

Confirm the symptom described by the customer.
Connect CONSULT-III to the vehicle in the “DATA MONITOR” mode and check real time diagnosis results.
Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 5.

CONFIRM THE SYMPTOM

>> GO TO 6.

PERFORM DTC CONFIRMATION PROCEDURE

Perform DTC Confirmation Procedure for the displayed DTC, and then check that DTC is detected again.
At this time, always connect CONSULT-III to the vehicle, and check diagnostic results in real time.
If two or more DTCs are detected, refer to

BCS-56, "DTC Inspection Priority Chart"

(BCM) determine trouble

diagnosis order.
NOTE:
Perform Component Function Check if DTC Confirmation Procedure is not included in Service Manual. This
simplified check procedure is an effective alternative though DTC cannot be detected during this check.
If the result of Component Function Check is NG, it is the same as the detection of DTC by DTC Confirmation
Procedure.

Is DTC detected?

YES

>> GO TO 7.

>> Refer to

GI-40, "Intermittent Incident"

DETECT MALFUNCTIONING SYSTEM BY SYMPTOM DIAGNOSIS

Detect malfunctioning system according to SYMPTOM DIAGNOSIS based on the confirmed symptom in step
4, and determine the trouble diagnosis order based on possible causes and symptoms.

>> GO TO 7.

DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE

Inspect according to Diagnostic Procedure of the system.
NOTE:

DIAGNOSIS AND REPAIR WORK FLOW

DLK-79

< BASIC INSPECTION >

DLK

The Diagnostic Procedure described is based on open circuit inspection. A short circuit inspection is also
required for the circuit check in the Diagnostic Procedure.
Is malfunctioning part detected?

YES

>> GO TO 8.

>> Check voltage of related BCM terminals using CONSULT-III.

REPAIR OR REPLACE THE MALFUNCTIONING PART

Repair or replace the malfunctioning part.

Reconnect parts or connectors disconnected during Diagnostic Procedure again after repair and replace-
ment.

Check for DTC. If DTC is displayed, erase it.

>> GO TO 9.

FINAL CHECK

When DTC is detected in step 2, perform DTC Confirmation Procedure or Component Function Check again,
and then check that the malfunction is completely repaired.
When symptom is described by the customer, refer to confirmed symptom in step 3 or 4, and check that the
symptom is not detected.
Does the symptom reappear?

YES (DTC is detected)>>GO TO 7.
YES (Symptom remains)>>GO TO 6.
NO

>> INSPECTION END

DLK-80

< BASIC INSPECTION >

INSPECTION AND ADJUSTMENT

INSPECTION AND ADJUSTMENT

ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL

ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL : De-
scription

INFOID:0000000006225867

When the battery is disconnected from the negative terminal, it is necessary to perform initial setting to oper-
ate automatic back door control system normally.
NOTE:
The following specified operations are not performed under the non-initialized condition.
• Automatic back door open/close function
• Anti-pinch function

ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL : Work
Procedure

INFOID:0000000006225868

INITIALIZATION

Fully close the back door manually. (when back door is already fully closed, this operation is not neces-
sary)

Perform automatic back door open/close operation of back door.

Check for noise or malfunctioning during operation.

Check that hazard lamp blinks and that warning buzzer operates.

NOTE:
Never touch back door, or allow foreign materials to be pinched in door, when performing automatic back door
open/close operation of back door, until it is in the fully closed or fully open position.

>> WORK END

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (BCM)

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (BCM) : Description

INFOID:0000000006225869

Perform the system initialization when replacing BCM, replacing Intelligent Key or registering an additional
Intelligent Key.

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT (BCM) : Work Proce-
dure

INFOID:0000000006225870

Refer to the CONSULT-III operation manual for the initialization procedure.

ADDITIONAL SERVICE WHEN REPLACING (AUTOMATIC BACK DOOR CON-
TROL MODULE)

ADDITIONAL SERVICE WHEN REPLACING (AUTOMATIC BACK DOOR CONTROL
MODULE) : Description

INFOID:0000000006225871

When replacing control module, or removing connector terminal, it is necessary to perform initial setting to
operate automatic back door system normally.
NOTE:
The following specified operations are not performed under the non-initialized condition.
• Automatic back door open/close function
• Anti-pinch function

ADDITIONAL SERVICE WHEN REPLACING (AUTOMATIC BACK DOOR CONTROL
MODULE) : Work Procedure

INFOID:0000000006225872

INITIALIZATION

INSPECTION AND ADJUSTMENT

DLK-81

< BASIC INSPECTION >

DLK

Fully close the back door manually. (when back door is already fully closed, this operation is not neces-
sary)

Perform automatic back door open/close operation of back door.

Check for noise or malfunctioning during operation.

Check that hazard lamp blinks and that warning buzzer operates.

>> WORK END

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