P NO. INDEX FOR DTC
=NGAT0179S02
DTC
Items
(CONSULT-II screen terms)
Reference page
CONSULT-II
GST*2
ECM*1
P0705 1101 PNP SW/CIRC AT-99
P0710 1208 ATF TEMP SEN/CIRC AT-105
P0720 1102 VEH SPD SEN/CIR AT*4 AT-111
P0725 1207 ENGINE SPEED SIG AT-116
P0731 1103 A/T 1ST GR FNCTN AT-120
P0732 1104 A/T 2ND GR FNCTN AT-126
P0733 1105 A/T 3RD GR FNCTN AT-132
P0734 1106 A/T 4TH GR FNCTN AT-138
P0740 1204 TCC SOLENOID/CIRC AT-147
P0744 1107 A/T TCC S/V FNCTN AT-152
P0745 1205 L/PRESS SOL/CIRC AT-160
P0750 1108 SFT SOL A/CIRC*3 AT-165
P0755 1201 SFT SOL B/CIRC*3 AT-170
P1705 1206 TP SEN/CIRC A/T*3 AT-175
P1760 1203 O/R CLTCH SOL/CIRC AT-184
*1: In Diagnostic Test Mode II (Self-diagnostic results), these numbers are controlled by NISSAN.
*2: These numbers are prescribed by SAE J2012.
*3: When the fail-safe operation occurs, the MIL illuminates.
*4: The MIL illuminates when both the “Revolution sensor signal” and the “Vehicle speed sensor signal” meet the fail-safe condition at
the same time.
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TROUBLE DIAGNOSIS — INDEX
Alphabetical & P No. Index for DTC (Cont’d)
AT-5
Supplemental Restraint System (SRS) “AIR
BAG” and “SEAT BELT PRE-TENSIONER”
NGAT0001
The supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER” used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The Supplemental Restraint System consists of driver air bag module (located in the center of the
steering wheel), front passenger air bag module (located on the instrument panel on passenger side), seat
belt pre-tensioners, a diagnosis sensor unit, a crash zone sensor, warning lamp, wiring harness and spiral
cable.
Information necessary to service the system safely is included in the RS section of this Service Manual.
WARNING:
¼ To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be performed
by an authorized NISSAN dealer.
¼ Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, refer to
RS-16
.
¼ Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. Spiral cable and wiring harnesses (except “SEAT BELT PRE-TENSIONER”) cov-
ered with yellow insulation either just before the harness connectors or for the complete harness
are related to the SRS.
Precautions for On Board Diagnostic (OBD)
System of A/T and Engine
NGAT0002
The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:
¼ Be sure to turn the ignition switch OFF and disconnect the negative battery terminal before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc.
will cause the MIL to light up.
¼ Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MIL to light up due to an open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
¼ Be sure to route and secure the harnesses properly after work. Interference of the harness with a
bracket, etc. may cause the MIL to light up due to a short circuit.
¼ Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to a malfunction of the EGR system or fuel injection system,
etc.
¼ Be sure to erase the unnecessary malfunction information (repairs completed) from the TCM and
ECM before returning the vehicle to the customer.
SEF289H
Precautions
NGAT0003
¼ Before connecting or disconnecting the TCM harness
connector, turn ignition switch OFF and disconnect nega-
tive battery terminal. Failure to do so may damage the
TCM. Because battery voltage is applied to TCM even if
ignition switch is turned off.
PRECAUTIONS
Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER”
AT-6
AAT470A
¼ When connecting or disconnecting pin connectors into or
from TCM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on TCM
pin terminal, when connecting pin connectors.
MEF040DA
¼ Before replacing TCM, perform TCM input/output signal
inspection and make sure whether TCM functions prop-
erly or not. (See page AT-92.)
SAT964I
¼ After performing each TROUBLE DIAGNOSIS, perform
“DTC (Diagnostic Trouble Code) CONFIRMATION PROCE-
DURE”.
The DTC should not be displayed in the “DTC CONFIRMA-
TION PROCEDURE” if the repair is completed.
¼ Before proceeding with disassembly, thoroughly clean the out-
side of the transmission. It is important to prevent the internal
parts from becoming contaminated by dirt or other foreign mat-
ter.
¼ Disassembly should be done in a clean work area.
¼ Use lint-free cloth or towels for wiping parts clean. Common
shop rags can leave fibers that could interfere with the opera-
tion of the transmission.
¼ Place disassembled parts in order for easier and proper
assembly.
¼ All parts should be carefully cleaned with a general purpose,
non-flammable solvent before inspection or reassembly.
¼ Gaskets, seals and O-rings should be replaced any time the
transmission is disassembled.
¼ It is very important to perform functional tests whenever they
are indicated.
¼ The valve body contains precision parts and requires extreme
care when parts are removed and serviced. Place disas-
sembled valve body parts in order for easier and proper
assembly. Care will also prevent springs and small parts from
becoming scattered or lost.
¼ Properly installed valves, sleeves, plugs, etc. will slide along
bores in valve body under their own weight.
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PRECAUTIONS
Precautions (Cont’d)
AT-7
¼ Before assembly, apply a coat of recommended ATF to all
parts. Apply petroleum jelly to protect O-rings and seals, or
hold bearings and washers in place during assembly. Do not
use grease.
¼ Extreme care should be taken to avoid damage to O-rings,
seals and gaskets when assembling.
¼ Replace ATF cooler if excessive foreign material is found in oil
pan or clogging strainer. Refer to “ATF COOLER SERVICE”
(Refer to AT-9).
¼ After overhaul, refill the transmission with new ATF.
¼ When the A/T drain plug is removed, only some of the fluid is
drained. Old A/T fluid will remain in torque converter and ATF
cooling system.
Always follow the procedures under “Changing A/T Fluid” refer
to
MA-37
whenchangingA/Tfluid.
Service Notice or Precautions
NGAT0004
FAIL-SAFE
NGAT0004S01
The TCM has an electronic Fail-Safe (limp home mode). This allows the vehicle to be driven even if a major
electrical input/output device circuit is damaged.
Under Fail-Safe, the vehicle always runs in third gear, even with a shift lever position of 1, 2 or D. The cus-
tomer may complain of sluggish or poor acceleration.
When the ignition key is turned ON following Fail-Safe operation, O/D OFF indicator lamp blinks for about 8
seconds. (For “TCM SELF-DIAGNOSTIC PROCEDURE (No Tools)”, refer to AT-47.)
Fail-Safe may occur without electrical circuit damage if the vehicle is driven under extreme conditions (such
as excessive wheel spin followed by sudden braking). To recover normal shift pattern, turn the ignition key
OFF for 5 seconds, then ON.
The blinking of the O/D OFF indicator lamp for about 8 seconds will appear only once and be cleared. The
customer may resume normal driving conditions.
Always follow the “WORK FLOW” (Refer to AT-57).
The SELF-DIAGNOSIS results will be as follows:
The first SELF-DIAGNOSIS will indicate damage to the vehicle speed sensor or the revolution sensor.
During the next SELF-DIAGNOSIS, performed after checking the sensor, no damages will be indicated.
TORQUE CONVERTER SERVICE
NGAT0004S04
The torque converter should be replaced under any of the following conditions:
¼ External leaks in the hub weld area.
¼ Converter hub is scored or damaged.
¼ Converter pilot is broken, damaged or fits poorly into crankshaft.
¼ Steel particles are found after flushing the cooler and cooler lines.
¼ Pump is damaged or steel particles are found in the converter.
¼ Vehicle has TCC shudder and/or no TCC apply. Replace only after all hydraulic and electrical diagnoses
have been made. (Converter clutch material may be glazed.)
¼ Converter is contaminated with engine coolant containing antifreeze.
¼ Internal failure of stator roller clutch.
¼ Heavy clutch debris due to overheating (blue converter).
¼ Steel particles or clutch lining material found in fluid filter or on magnet when no internal parts in unit are
worn or damaged — indicates that lining material came from converter.
The torque converter should not be replaced if:
¼ The fluid has an odor, is discolored, and there is no evidence of metal or clutch facing particles.
PRECAUTIONS
Precautions (Cont’d)
AT-8
¼ The threads in one or more of the converter bolt holes are damaged.
¼ Transmission failure did not display evidence of damaged or worn internal parts, steel particles or clutch
plate lining material in unit and inside the fluid filter.
¼ Vehicle has been exposed to high mileage (only). The exception may be where the torque converter clutch
dampener plate lining has seen excess wear by vehicles operated in heavy and/or constant traffic, such
as taxi, delivery or police use.
ATF COOLER SERVICE
NGAT0004S02
Replace ATF cooler if excessive foreign material is found in oil pan or clogging strainer.
Replace radiator lower tank (which includes ATF cooler) with a new one and flush cooler line using cleaning
solvent and compressed air.
OBD-II SELF-DIAGNOSIS
NGAT0004S03
¼ A/T self-diagnosis is performed by the TCM in combination with the ECM. The results can be read through
the blinking pattern of the O/D OFF indicator or the malfunction indicator lamp (MIL). Refer to the table on
AT-38 for the indicator used to display each self-diagnostic result.
¼ The self-diagnostic results indicated by the MIL are automatically stored in both the ECM and TCM
memories.
Always perform the procedure “HOW TO ERASE DTC” on AT-35 to complete the repair and avoid
unnecessary blinking of the MIL.
¼ The following self-diagnostic items can be detected using ECM self-diagnostic results mode* only when
the O/D OFF indicator lamp does not indicate any malfunctions.
− Park/neutral position (PNP) switch
− A/T 1st, 2nd, 3rd, or 4th gear function
− A/T TCC S/V function (lock-up)
*: For details of OBD-II, refer to
EC-627
(“ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION”).
¼ Certain systems and components, especially those related to OBD, may use a new style slide-
locking type harness connector. For description and how to disconnect, refer to
EL-5
,
“Description”, “HARNESS CONNECTOR”.
Wiring Diagrams and Trouble Diagnosis
NGAT0005
When you read wiring diagrams, refer to the followings:
¼ “HOW TO READ WIRING DIAGRAMS” refer to
GI-10
.
¼ “POWER SUPPLY ROUTING” for power distribution circuit refer to
EL-9
.
When you perform trouble diagnosis, refer to the followings:
¼ “HOW TO FOLLOW TEST GROUP IN TROUBLE DIAGNOSIS” refer to
GI-34
.
¼ “HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT” refer to
GI-23
.
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PRECAUTIONS
Service Notice or Precautions (Cont’d)
AT-9
Special Service Tools
NGAT0006
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name
Description
ST2505S001
(J34301-C)
Oil pressure gauge set
1 ST25051001
(—)
Oil pressure gauge
2 ST25052000
(—)
Hose
3 ST25053000
(—)
Joint pipe
4 ST25054000
(—)
Adapter
5 ST25055000
(—)
Adapter
NT097
Measuring line pressure
ST07870000
(J37068)
Transmission case stand
NT421
Disassembling and assembling A/T
a: 182 mm (7.17 in)
b: 282 mm (11.10 in)
c: 230 mm (9.06 in)
d: 100 mm (3.94 in)
KV31102100
(J37065)
Torque converter one-
way clutch check tool
NT098
Checking one-way clutch in torque converter
ST25850000
(J25721-A)
Sliding hammer
NT422
Removing oil pump assembly
a: 179 mm (7.05 in)
b: 70 mm (2.76 in)
c: 40 mm (1.57 in) dia.
d: M12 x 1.75P
KV31102400
(J34285 and J34285-87)
Clutch spring compres-
sor
NT423
Removing and installing clutch return springs
a: 320 mm (12.60 in)
b: 174 mm (6.85 in)
PREPARATION
Special Service Tools
AT-10
Tool number
(Kent-Moore No.)
Tool name
Description
ST33200000
(J26082)
Drift
NT091
Installing oil pump housing oil seal Installing rear
oil seal
a: 60 mm (2.36 in) dia.
b: 44.5 mm (1.752 in) dia.
(J34291)
Shim setting gauge set
NT101
Selecting oil pump cover bearing race and oil
pump thrust washer
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PREPARATION
Special Service Tools (Cont’d)
AT-11
A/T Electrical Parts Location
NGAT0007
AAT622A
OVERALL SYSTEM
A/T Electrical Parts Location
AT-12
Circuit Diagram
NGAT0008
AAT580A
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OVERALL SYSTEM
Circuit Diagram
AT-13
Cross-sectional View
NGAT0010
SAT125BA
OVERALL SYSTEM
Cross-sectional View
AT-14
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