Infiniti QX56 (Z62). Manual - part 1369

TIRE PRESSURE MONITORING SYSTEM

WT-23

< WIRING DIAGRAM >

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< WIRING DIAGRAM >

TIRE PRESSURE MONITORING SYSTEM

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DIAGNOSIS AND REPAIR WORK FLOW

WT-25

< BASIC INSPECTION >

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BASIC INSPECTION

DIAGNOSIS AND REPAIR WORK FLOW

Work Flow 

INFOID:0000000006225501

DETAILED FLOW

1.

COLLECT THE INFORMATION FROM THE CUSTOMER

It is also important to clarify customer concerns before starting the inspection. Reproduce the symptom, and
understand it fully. Interview the customer about the concerns carefully. In some cases, it is necessary to
check the symptoms by driving the vehicle with the customer.

CAUTION:

Customers are not professionals. Never assume“maybe the customer means...” or “maybe the cus-
tomer mentioned this symptom.

>> GO TO 2.

2.

BASIC INSPECTION

1.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

2.

Check the tire pressure for all wheels and adjust to the specified value. Refer to 

WT-69, "Tire Air Pres-

sure"

. 

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Inspect or repair the tires or wheels.

3.

CHECK LOW TIRE PRESSURE WARNING LAMP STATUS

Check low tire pressure warning lamp display.
Does not low tire pressure warning lamp turn OFF?

YES

>> GO TO 4.

NO

>> GO TO 8.

4.

CHECK DTC WITH LOW TIRE PRESSURE WARNING CONTROL UNIT

With CONSULT-III

Perform the self-diagnosis for “AIR PRESSURE MONITOR”.

Is any DTC detected?

YES

>> GO TO 5.

NO

>> GO TO 8.

5.

ERASE DTC MEMORY

With CONSULT-III

1.

Record DTC.

2.

Erase DTC once.

NOTE:
After erasing DTC record, currently occurred DTC can be detected by reading out DTC again.

>> GO TO 6.

6.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT-III

Perform “DTC CONFIRMATION PROCEDURE” (self-diagnosis) with recorded DTC.
If two or more DTCs are detected, refer to 

WT-17, "DTC Inspection Priority Chart"

 and determine trouble diag-

nosis order.

Is any malfunction detected by self-diagnosis?

YES

>> GO TO 7.

WT-26

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORK FLOW

NO

>> GO TO 8.

7.

DETECT MALFUNCTIONING PART BY DIAGNOSIS PROCEDURE

Perform the diagnosis applicable to the displayed DTC. Refer to 

WT-18, "DTC Index"

.

>> GO TO 10.

8.

CRUISE FOR SYMPTOM CHECK

1.

Start the engine.

2.

Drive for several minutes at a speed of 40 km/h (25 MPH) or more, then stop the vehicle.

>> GO TO 9.

9.

PERFORM DIAGNOSIS BY SYMPTOM

Perform trouble diagnosis or repair applicable to the symptom. Refer to 

WT-53, "Symptom Table"

.

>> GO TO 11.

10.

FINAL CHECK (WHEN DTC WAS DETECTED)

With CONSULT-III

Perform “DTC CONFIRMATION PROCEDURE” (self-diagnosis) with applicable DTC.

Is any malfunction detected by self-diagnosis?

YES

>> GO TO 7.

NO

>> INSPECTION END

11.

FINAL CHECK (WHEN SYMPTOM OCCURRED)

Make sure that the symptom is not detected.

Does symptom remain?

YES

>> GO TO 9.

NO

>> INSPECTION END