2003 NISSAN ALMERA N16 transmission

AT-192
[EURO-OBD]
DTC U1000 CAN COMMUNICATION LINE
DTC U1000 CAN COMMUNICATION LINE
PFP:31940
DescriptionECS007PL
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
*: This terminal is connected to the ECM.
On Board Diagnosis LogicECS007PM
**:A/T COMMLINE means DTC U1000 CAN communication line.
DTC Confirmation ProcedureECS007PN
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch “ON”.
2. Select “DATA MONITOR” mode for “ENGINE” with CONSULT-II.
3. Wait at least 6 seconds or start engine and wait for at least 6
seconds.
4. If DTC is detected, go to AT- 1 9 4 , "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Turn ignition switch “ON”.
2. Wait at least 6 seconds or start engine and wait at least 6 sec-
onds.
3. Perform self-diagnosis.
Refer to AT- 5 1 , "
TCM SELF-DIAGNOSTIC PROCEDURE (NO
TOOLS)" .
4. If DTC is detected, go to AT- 1 9 4 , "
Diagnostic Procedure" .
Te r m i -
nal No.Wire color Item ConditionJudgement
standard
(Approx.)
5 L CAN(H) — — —
6 R CAN(L) — — —
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
:A/T COMM LINE**
The ECM-AT communication line is open
or shorted.
●Harness or connectors
(The solenoid circuit is open or shorted.)
●Overrun clutch solenoid valve :Judgement flicker
SAT014K
MCIB9035E

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-237
[EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
20. Vehicle Does Not Decelerate By Engine BrakeECS007QL
SYMPTOM:
Vehicle does not decelerate by engine brake when shifting from 2
2 (12 ) to 11 .
1.CHECK SYMPTOM
Is 6. Vehicle Does Not Creep Backward In “R” Position OK?
Ye s o r N o
Yes >> Go to AT-233, "15. Engine Speed Does Not Return To Idle (Light Braking D4→ D3 )" .
No >> Go to AT- 2 1 6 , "
6. Vehicle Does Not Creep Backward In “R” Position" .
21. TCM Self-diagnosis Does Not Activate (PNP & Overdrive Control Switches,
and Throttle Position Sensor Circuit Checks)
ECS007QM
SYMPTOM:
O/D OFF indicator lamp does not come on in TCM self-diagnostic procedure even if the lamp circuit is
good.
DESCRIPTION
●PNP switch
The PNP switch assembly includes a transmission position switch. The transmission position switch
detects the selector lever position and sends a signal to the TCM.
●Overdrive control switch
SCIA0752E
SCIA0776E
MCIB9006E

TROUBLE DIAGNOSIS — BASIC INSPECTION
AT-261
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
TROUBLE DIAGNOSIS — BASIC INSPECTIONPFP:00000
A/T Fluid CheckECS007QR
FLUID LEAKAGE CHECK
1. Clean area suspected of leaking. — for example, mating surface
of converter housing and transmission case.
2. Start engine, apply foot brake, place selector lever in “D” posi-
tion and wait a few minutes.
3. Stop engine.
4. Check for fluid leakage.
FLUID CONDITION CHECK
FLUID LEVEL CHECK
Refer to AT- 2 6 1 , "A/T Fluid Check" .
SAT767B
SAT288G
Fluid color Suspected problem
Dark or black with burned odor Wear of frictional material
Milky pink Water contamination — Road water
entering through filler tube or breather
Varnished fluid, light to dark brown and
tackyOxidation — Over or under filling, —
Overheating
SAT638A

TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
AT-295
[EXC.F/EURO-OBD]
D
E
F
G
H
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J
K
L
MA
B
AT
Races extremely fast or slips in
changing from “D
4 ” or “D3 ” to “D1 ”
when depressing accelerator pedal.ON vehicle1. Fluid levelAT- 2 6 1 , "
FLUID LEVEL
CHECK"
2. Throttle position sensor (Accelerator
pedal position (APP) sensor)AT- 3 5 2 , "ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
3. Line pressure testAT- 2 6 5 , "Line Pressure
Te s t"
4. Line pressure solenoid valveAT- 3 8 8 , "
LINE PRES-
SURE SOLENOID
VA LV E"
5. Control valve assemblyAT- 4 0 6 , "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle6. Forward clutchAT- 4 6 4 , "
Forward and
Overrun Clutches"
7. Forward one-way clutchAT- 4 1 3 , "OVERHAUL"
8. Low one-way clutchAT- 4 1 3 , "
OVERHAUL",
AT- 4 1 7 , "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
Vehicle will not run in any position.ON vehicle1. Fluid levelAT- 2 6 1 , "
FLUID LEVEL
CHECK"
2. Control cable adjustmentAT- 4 0 8 , "Control Cable
Adjustment"
3. Line pressure testAT- 2 6 5 , "Line Pressure
Te s t"
4. Line pressure solenoid valveAT- 3 8 8 , "
LINE PRES-
SURE SOLENOID
VA LV E"
OFF vehicle5. Oil pumpAT- 4 3 5 , "
Oil Pump"
6. High clutchAT- 4 5 9 , "High Clutch"
7. Brake bandAT- 4 8 3 , "Band Servo Pis-
ton Assembly"
8. Low & reverse brakeAT- 4 7 0 , "Low & Reverse
Brake"
9. Torque converterAT- 4 1 7 , "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
10. Parking componentsAT- 4 7 8 , "
Output Shaft,
Idler Gear, Reduction Pin-
ion Gear and Bearing
Retainer"
Transmission noise in “D”, “2”, “1” and
“R” positions.ON vehicle 1. Fluid levelAT- 2 6 1 , "
FLUID LEVEL
CHECK"
OFF vehicle 2. Torque converterAT- 4 1 7 , "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
Symptom Condition Diagnostic Item Reference Page

AT-298
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Transmission overheats.ON vehicle1. Fluid levelAT-261, "
FLUID LEVEL
CHECK"
2. Engine idling rpmEC-722, "Idle Speed and
Ignition Timing"
3. Throttle position sensor (Accelerator
pedal position (APP) sensor)AT-352, "ACCELE
RATOR PEDAL POSI-
TION (APP) SENSOR"
4. Line pressure testAT-265, "Line Pressure
Te s t"
5. Line pressure solenoid valveAT-388, "
LINE PRES-
SURE SOLENOID
VA LV E"
6. Control valve assemblyAT-406, "
Control Valve
Assembly and Accumula-
tors"
OFF vehicle7. Oil pumpAT-435, "
Oil Pump"
8. Reverse clutchAT-455, "Reverse Clutch"
9. High clutchAT-459, "High Clutch"
10. Brake bandAT-483, "Band Servo Pis-
ton Assembly"
11. Forward clutchAT-464, "Forward and
Overrun Clutches"
12. Overrun clutchAT-464, "Forward and
Overrun Clutches"
13. Low & reverse brakeAT-470, "Low & Reverse
Brake"
14. Torque converterAT-417, "
Locations of
Adjusting Shims, Needle
Bearings, Thrust Washers
and Snap Rings"
ATF shoots out during operation.
White smoke emitted from exhaust
pipe during operation.ON vehicle 1. Fluid levelAT-261, "
FLUID LEVEL
CHECK"
OFF vehicle2. Reverse clutchAT-455, "
Reverse Clutch"
3. High clutchAT-459, "High Clutch"
4. Brake bandAT-483, "Band Servo Pis-
ton Assembly"
5. Forward clutchAT-464, "Forward and
Overrun Clutches"
6. Overrun clutchAT-464, "Forward and
Overrun Clutches"
7. Low & reverse brakeAT-470, "Low & Reverse
Brake"
Symptom Condition Diagnostic Item Reference Page

CAN COMMUNICATION
AT-305
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
CAN COMMUNICATIONPFP:23710
System DescriptionECS007QX
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitECS007QY
×:Applicable
TYPE 1
System diagram
Input/output signal chart
T: Transmit R: Receive Body type Sedan/ 5DH/B/ 3DH/B
Axle2WD
Engine QG18DE QG15DE/QG18DE
Transmission A/T M/T
Brake controlABS
CAN communication unit
ECM××
TCM×
Smart entrance control unit××
Data link connector××
Combination meter××
CAN communication type AT-305, "
TYPE 1"AT- 3 0 6 , "TYPE 2"
SEL825Y
Signals ECM TCMSmart entrance
control unitCombination meter
Engine speed signal T R
Brake switch signal R T
Rear window defogger signal R T
Heater fan switch signal R T
Air conditioner switch signal R T
MI signal T R
Current gear position signal T R
Engine coolant temperature signal T R
Fuel consumption signal T R

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-333
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
20. Vehicle Does Not Decelerate By Engine BrakeECS007RJ
SYMPTOM:
Vehicle does not decelerate by engine brake when shifting from 2
2 (12 ) to 11 .
1.CHECK SYMPTOM
Is 6. Vehicle Does Not Creep Backward In “R” Position OK?
Ye s o r N o
Yes >> Go to AT- 3 2 8 , "15. Engine Speed Does Not Return To Idle (Light Braking D4→ D3 )" .
No >> Go to AT- 3 1 3 , "
6. Vehicle Does Not Creep Backward In “R” Position" .
21. TCM Self-diagnosis Does Not Activate (PNP & Overdrive Control Switches,
and Throttle Position Sensor Circuit Checks)
ECS007RK
SYMPTOM:
O/D OFF indicator lamp does not come on in TCM self-diagnostic procedure even if the lamp circuit is
good.
DESCRIPTION
●PNP switch
The PNP switch assembly includes a transmission position switch. The transmission position switch
detects the selector lever position and sends a signal to the TCM.
●Overdrive control switch
Detects the overdrive control switch position (ON or OFF) and sends a signal to the TCM.
SCIA0752E
SCIA0776E
MCIB9006E

CAN COMMUNICATION LINE
AT-395
[ALL]
D
E
F
G
H
I
J
K
L
MA
B
AT
CAN COMMUNICATION LINEPFP:31940
DescriptionECS007SN
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
TCM TERMINALS AND REFERENCE VALUE
Remarks: Specification data are reference values.
*: This terminal is connected to the ECM.
On Board Diagnosis LogicECS007SO
**: A/T COMM LINE means CAN communication line.
Self-Diagnosis Code Confirmation ProcedureECS007SP
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch “ON”.
2. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Wait at least 6 seconds or start engine and wait for at least 6
seconds.
4. If DTC is detected, go to AT- 3 9 7 , "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Turn ignition switch “ON”.
2. Wait at least 6 seconds or start engine and wait at least 6 sec-
onds.
3. Perform self-diagnosis.
Refer to AT-250, "
Diagnostic Procedure Without CONSULT-II" .
4. If DTC is detected, go to AT- 3 9 7 , "
Diagnostic Procedure" .
Termi-
nal No.Wire color Item ConditionJudgement
standard
(Approx.)
5 L CAN (H) — — —
6 R CAN (L) — — —
Diagnostic trouble code Malfunction is detected when... Check items (Possible cause)
: A/T COMM LINE**
The ECM-AT communication line is open
or shorted.
●Harness or connectors
(The solenoid circuit is open or shorted.)
●Line pressure solenoid valve
: 11th judgement flicker
SAT014K
SCIA0705E