Nissan Versa (N17): Additional service when replacing TCM

Nissan Versa 2nd generation (N17) Service Manual / Transmission & driveline / Transaxle & transmission (TM) / Additional service when replacing TCM

Description

When replacing the TCM, perform the following work.

CHECK LOADING OF CALIBRATION DATA

The TCM acquires calibration data (individual characteristic value) of each solenoid that is stored in the ROM assembly (in the control valve). This enables the TCM to perform accurate control. After the TCM is replaced, check that the TCM has correctly loaded the calibration data.

CALIBRATION OF G SENSOR

TCM stores calibration data (inherent characteristic value) of G sensor to provide accurate control. Therefore, it is required to perform calibration of G sensor after the replacement of TCM.

CAUTION: When replacing TCM and transaxle assembly as a set, replace transaxle assembly first and then replace TCM.

If the TCM is replaced in advance, perform "ADDITIONAL SERVICE WHEN REPLACING TRANSAXLE ASSEMBLY" after "G sensor calibration".

Work procedure

1.CHECK WORK CONTENTS

Replacing only the TCM>>GO TO 2.

Replacing the TCM after the transaxle assembly is replaced>>GO TO 2.

Replacing the transaxle assembly after the TCM is replaced>>GO TO 5.

2.LOADING OF CALIBRATION DATA

Shift the selector lever to the "P" position.
Turn ignition switch ON.
Check that "P" is displayed on shift position indicator on combination meter.

NOTE: Displayed approximately 4 - 5 seconds after the selector lever is moved to the "P" position.

Does the shift position indicator display "P"?

YES >> GO TO 3.

NO >> GO TO 4.

3.PERFORM G SENSOR CALIBRATION

Refer to TM "Work Procedure".

>> WORK END

4.DETECT MALFUNCTIONING ITEM

Check the following items:

Harness between the TCM and the ROM assembly inside the transaxle assembly is open or shorted.
Disconnected, loose, bent, collapsed, or otherwise abnormal connector housing terminals

Is the inspection result normal?

YES >> GO TO 2.

NO >> Repair or replace the malfunctioning parts.

5.PERFORM G SENSOR CALIBRATION

Refer to TM "Work Procedure".

>> Perform "ADDITIONAL SERVICE WHEN REPLACING TRANSAXLE ASSEMBLY" after "CALIBRATION OF G SENSOR". Refer to TM "Work Procedure".

Diagnosis and repair work flow

Additional service when replacing transaxle assembly

Other materials:

Mixture ratio selflearning value clear
Description This describes how to erase the mixture ratio selflearning value. For the actual procedure, follow the instructions in "Diagnosis Procedure". Work Procedure 1.START With CONSULT Start engine and warm it up to normal operating temperature. Select "SELFLEARNING CONT" in "WOR ...