
ACS-1
ELECTRICAL
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SECTION ACS
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CONTENTS
AUTO CRUISE CONTROL SYSTEM
SERVICE INFORMATION  .. ..........................2
AUTOMATIC SPEED CONTROL DEVICE 
(ASCD) ........................................................... .....
2
Precaution for Supplemental Restraint System 
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. .....
2
Description ................................................................2
Revision: May 2010 2011 Versa 

AT-1
TRANSMISSION/TRANSAXLE
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SECTION AT
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CONTENTS
AUTOMATIC TRANSAXLE
SERVICE INFORMATION  .. ..........................5
INDEX FOR DTC  ............................................ .....5
Alphabetical Index  ............................................... ......5
DTC No. Index  ..........................................................5
PRECAUTIONS ...................................................7
Precaution for Supplemental Restraint System 
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
7
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
7
Precaution for On Board Diagnosis (OBD) System 
of A/T and Engine  .....................................................
8
Precaution .................................................................8
Service Notice or Precaution .....................................9
PREPARATION ..................................................11
Special Service Tool  ........................................... ....11
Commercial Service Tool  ........................................14
A/T FLUID ...........................................................17
Checking A/T Fluid  ..................................................17
Changing A/T Fluid  .................................................17
A/T Fluid Cooler Cleaning  .......................................18
A/T CONTROL SYSTEM ....................................21
Cross-Sectional View  ..............................................21
Shift Mechanism .................................................. ....22
TCM Function ..........................................................30
CAN Communication ...............................................31
Input/Output Signal of TCM .....................................31
Line Pressure Control  .............................................32
Shift Control  ........................................................ ....33
Lock-up Control  .......................................................34
Engine Brake Control (Overrun Clutch Control)  ......35
Control Valve ....................................................... ....37
Centrifugal Cancel Mechanism  ...............................37
ON BOARD DIAGNOSTIC (OBD) SYSTEM ......39
Introduction ......................................................... ....39
OBD-II Function for A/T System ..............................39
One or Two Trip Detection Logic of OBD-II  ......... ....39
OBD-II Diagnostic Trouble Code (DTC)  ..................39
Malfunction Indicator Lamp (MIL)  ............................41
TROUBLE DIAGNOSIS  ....................................42
DTC Inspection Priority Chart  ..................................42
Fail-Safe ..................................................................42
How to Perform Trouble Diagnosis for Quick and 
Accurate Repair  .......................................................
43
A/T Electrical Parts Location  ...................................49
Circuit Diagram  ........................................................50
Inspections Before Trouble Diagnosis  .....................51
Road Test  ................................................................55
Check Before Engine Is Started  ..............................56
Check at Idle ............................................................56
Cruise Test - Part 1  .................................................58
Cruise Test - Part 2  .................................................61
Cruise Test - Part 3  .................................................62
Vehicle Speed at Which Gear Shifting Occurs  ........64
Vehicle Speed at Which Lock-up Occurs/Releas-
es .............................................................................
64
Symptom Chart ........................................................65
TCM Terminal and Reference Value  .......................75
CONSULT-III Function (TRANSMISSION) .......... ....77
Diagnosis Procedure without CONSULT-III  ............82
U1000 CAN COMM CIRCUIT  ...........................87
Description ........................................................... ....87
On Board Diagnosis Logic  .......................................87
Possible Cause ........................................................87
DTC Confirmation Procedure  ..................................87
Wiring Diagram - AT - CAN  .....................................88
Diagnosis Procedure  ...............................................89
P0705 TRANSMISSION RANGE SWITCH A  ...90
Description ...............................................................90
CONSULT-III Reference Value in Data Monitor 
Mode .................................................................... ....
90
On Board Diagnosis Logic  .......................................90
Possible Cause ........................................................90
DTC Confirmation Procedure  ..................................90
Revision: May 2010 2011 Versa