Nissan Murano Z51. Manual

The TCM receives a signal from the vehicle speed sensor and transmission range switch. Then it provides
shift control or lock-up control via CVT solenoid valves.
The TCM also communicates with the ECM by means of a signal
sent from sensing elements used with the OBD-related parts of the
CVT system for malfunction-diagnostic purposes. The TCM is capa-
ble of diagnosing malfunctioning parts while the ECM can store mal-
functions in its memory.
Input and output signals must always be correct and stable in the
operation of the CVT system. The CVT system must be in good
operating condition and be free of valve seizure, solenoid valve mal-
function, etc.

It is much more difficult to diagnose a malfunction that occurs inter-
mittently rather than continuously. Most intermittent malfunctions are
caused by poor electric connections or improper wiring. In this case,
careful checking of suspected circuits may help prevent the replace-
ment of good parts.
A visual check only may not find the cause of the malfunctions. A
road test with CONSULT-III (or GST) or a circuit tester connected
should be performed. Follow the “DETAILED FLOW”.

Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such malfunctions, espe-
cially intermittent ones. Find out what symptoms are present and
under what conditions they occur. A “Diagnostic Work Sheet” as
shown on the example (Refer to

TM-6

) should be used.

Start your diagnosis by looking for “conventional” malfunctions first.
This will help troubleshoot driveability malfunctions on an electroni-
cally controlled engine vehicle.
Also check related Service Bulletins.

DETAILED FLOW

COLLECT THE INFORMATION FROM THE CUSTOMER

Get the detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurred) using the diagnosis work sheet. Refer to

TM-6, "Diagnostic Work Sheet"

>> GO TO 2.

CHECK SYMPTOM 1

Check the following items based on the information obtained from the customer.
• Fail-safe. Refer to

TM-121, "Fail-safe"

• CVT fluid inspection. Refer to

TM-146, "Inspection"

• Line pressure test. Refer to

TM-153, "Inspection and Judgment"

SAT631IB

SAT632I

SEF234G

TM-6

< BASIC INSPECTION >

[CVT: RE0F09B]

DIAGNOSIS AND REPAIR WORK FLOW

• Stall test. Refer to

TM-151, "Inspection and Judgment"

>> GO TO 3.

CHECK DTC

Check DTC.

Perform the following procedure if DTC is detected.

• Record DTC.
• Erase DTC. Refer to

TM-34, "Diagnosis Description"

Is any DTC detected?

YES

>> GO TO 4.

>> GO TO 5.

PERFORM DIAGNOSTIC PROCEDURE

Perform “Diagnostic Procedure” for the displayed DTC. Repair detected items.

>> GO TO 5.

PERFORM DTC CONFIRMATION PROCEDURE

Perform “DTC CONFIRMATION PROCEDURE” for the displayed DTC.
Is DTC detected?

YES

>> GO TO 4.

>> GO TO 6.

CHECK SYMPTOM 2

Confirm the symptom described by the customer.

Is any malfunction present?

YES

>> GO TO 7.

>> INSPECTION END

ROAD TEST

Perform “ROAD TEST”. Refer to

TM-155, "Description"

>> GO TO 8.

CHECK SYMPTOM 3

Confirm the symptom described by the customer.

Is any malfunction present?

YES

>> GO TO 2.

>> INSPECTION END

Diagnostic Work Sheet

INFOID:0000000005513931

INFORMATION FROM CUSTOMER

KEY POINTS

• WHAT..... Vehicle & CVT model
• WHEN..... Date, Frequencies
• WHERE..... Road conditions
• HOW..... Operating conditions, Symptoms

Customer name

MR/MS

Model & Year

VIN

Trans. Model

Engine

Mileage

Malfunction Date

Manuf. Date

In Service Date

Frequency

Continuous

Intermittent (

times a day)

Nissan Murano Z51. Manual - part 1413