Nissan X-Trail 32. Manual - part 1833

DIAGNOSIS AND REPAIR WORK FLOW

SEC-99

< BASIC INSPECTION >

[WITH INTELLIGENT KEY SYSTEM]

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Inspect according to Diagnosis Procedure of the system.

Is malfunctioning part detected?

YES

>> GO TO 8.

NO

>> Check according to 

GI-44, "Intermittent Incident"

.

8.

REPAIR OR REPLACE THE MALFUNCTIONING PART

1.

Repair or replace the malfunctioning part.

2.

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

3.

Check DTC. If DTC is detected, erase it.

>> GO TO 9.

9.

FINAL CHECK

When DTC is detected in step 2, perform DTC CONFIRMATION PROCEDURE again, and then check that the
malfunction is repaired securely.
When symptom is described by the customer, refer to confirmed symptom in step 3 or 4, and check that the
symptom is not detected.

Is DTC detected and does symptom remain?

YES-1 >> DTC is detected: GO TO 7.
YES-2 >> Symptom remains: GO TO 4.
NO

>> Before returning the vehicle to the customer, always erase DTC.

SEC-100

< BASIC INSPECTION >

[WITH INTELLIGENT KEY SYSTEM]

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT

ECM

ECM : Description

INFOID:0000000010922131

Performing the following procedure can automatically activate recommunication of ECM and BCM, but only
when the ECM is replaced with a new one*.
*: New one means a virgin ECM that has never been energized on-board.
(In this step, initialization procedure using CONSULT is not necessary)
NOTE:
• When the replaced ECM is not a brand new, the specified procedure (Initialization of BCM and regis-

tration of Intelligent Keys) using CONSULT is necessary.

• If multiple keys are attached to the key holder, separate them before beginning work.
• Distinguish keys with unregistered key IDs from those with registered IDs.

ECM : Work Procedure

INFOID:0000000010922132

1.

PERFORM ECM RECOMMUNICATING FUNCTION

1.

Install ECM.

2.

Contact backside of the registered Intelligent Key* to push-button ignition switch while brake pedal is
depressed, then turn ignition switch ON.
*: To perform this step, use the key that is used before performing ECM replacement.

3.

Maintain ignition switch in the ON position for at least 5 seconds.

4.

Turn ignition switch OFF.

5.

Check that the engine starts.

>> GO TO 2.

2.

PERFORM ADDITIONAL SERVICE WHEN REPLACING ECM

Perform the following procedure.
• MR20DD: 

EC-141, "Work Procedure"

• QR25DE: 

EC-550, "Work Procedure"

• R9M: 

EC-944, "Work Procedure"

>> END

BCM

BCM : Description

INFOID:0000000010922133

BEFORE REPLACEMENT

When replacing BCM, save or print current vehicle specification with CONSULT configuration before replace-
ment.
NOTE:
If “READ CONFIGURATION” cannot be used, use the “WRITE CONFIGURATION - Manual selection” after
replacing BCM.

AFTER REPLACEMENT

CAUTION:

When replacing BCM, always perform “WRITE CONFIGURATION” with CONSULT. Or not doing so,
BCM control function does not operate normally.
• Complete the procedure of “WRITE CONFIGURATION” in order.
• Configuration is different for each vehicle model. Confirm configuration of each vehicle model.
• If you set incorrect “WRITE CONFIGURATION”, incidents might occur.
NOTE:
When replacing BCM, perform the system initialization (NATS) (if equipped).

BCM : Work Procedure

INFOID:0000000010922134

1.

SAVING VEHICLE SPECIFICATION

ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT

SEC-101

< BASIC INSPECTION >

[WITH INTELLIGENT KEY SYSTEM]

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CONSULT Configuration

Perform “READ CONFIGURATION” to save or print current vehicle specification. Refer to 

BCS-106, "Descrip-

tion"

.

NOTE:
If “READ CONFIGURATION” cannot be used, use the “WRITE CONFIGURATION - Manual selection” after
replacing BCM.

>> GO TO 2.

2.

REPLACE BCM

Replace BCM. Refer to 

BCS-121, "Removal and Installation"

.

>> GO TO 3.

3.

WRITING VEHICLE SPECIFICATION

CONSULT Configuration

Perform “WRITE CONFIGURATION - Config file” or “WRITE CONFIGURATION - Manual selection” to write
vehicle specification. Refer to 

BCS-106, "Work Procedure"

.

>> GO TO 4.

4.

INITIALIZE BCM (NATS)

Perform BCM initialization. (NATS)

>> WORK END

STEERING LOCK UNIT

STEERING LOCK UNIT : Description

INFOID:0000000010922135

Performing the following procedure can automatically activate recommunication of steering lock unit and
BCM, but only when the steering lock unit is replaced with a new one*.
*: New one means a virgin steering lock unit that has never been energized on-board.
(In this step, initialization procedure using CONSULT is not necessary)
NOTE:
• When the replaced steering lock unit is not a brand new, the specified procedure (Initialization of

BCM and registration of Intelligent Keys) using CONSULT is necessary.

• If multiple keys are attached to the key holder, separate them before beginning work.
• Distinguish keys with unregistered key IDs from those with registered IDs.

STEERING LOCK UNIT : Work Procedure

INFOID:0000000010922136

1.

PERFORM STEERING LOCK UNIT RECOMMUNICATING FUNCTION

1.

Install steering lock unit.

2.

Contact backside of registered Intelligent Key* to push-button ignition switch while brake pedal is
depressed, then turn ignition switch ON.
*: To perform this step, use the key that is used before performing steering lock unit replacement.

3.

Maintain ignition switch in the ON position for at least 5 seconds.

4.

Turn ignition switch OFF.

5.

Check that the ignition switch is turned ON.

>> INSPECTION END

SEC-102

< DTC/CIRCUIT DIAGNOSIS >

[WITH INTELLIGENT KEY SYSTEM]

P161D IMMOBILIZER

DTC/CIRCUIT DIAGNOSIS

P161D IMMOBILIZER

DTC Description

INFOID:0000000010922137

DTC DETECTION LOGIC

POSSIBLE CAUSE

BCM

FAIL-SAFE

Inhibit engine cranking

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Select “Self Diagnostic Result” mode of “ENGINE” using CONSULT.

Is DTC detected?

YES

>> Refer to 

SEC-102, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010922138

1.

CHECK DTC OF “BCM”

Select “Self Diagnostic Result” mode of “BCM” using CONSULT.
Is DTC detected?

YES

>> Perform the trouble diagnosis related to the detected DTC. Refer to 

BCS-78, "DTC Index"

.

NO

>> GO TO 2.

2.

REPLACE BCM

Replace BCM. Refer to 

BCS-121, "Removal and Installation"

.

>> INSPECTION END

DTC No.

CONSULT screen items

(Trouble diagnosis content)

DTC detecting condition

P161D

IMMOBILIZER
(Immobilizer)

When BCM detects an immobilizer malfunction and engine start is prohibited.