NISSAN ALMERA N16 2003 Electronic Repair Manual

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

AT-306
[EXC.F/EURO-OBD]
CAN COMMUNICATION
TYPE 2
System diagram
Input/output signal chart
T: Transmit R: Receive Vehicle speed signal R T
Seat belt reminder signalRT
Headlamp switch signalTR
Flashing indicator signalTR
Engine cooling fan speed signal T R
Child lock indicator signalTR
Door switches state signalTR
A/C compressor signal T R
Accelerator pedal position signal T R
Output shaft revolution signal R T
OD OFF switch signal R T
OD OFF indicator signal T R
A/T self-diagnosis signal R TSignals ECM TCMSmart entrance
control unitCombination meter
SEL826Y
Signals ECMSmart entrance control
unitCombination meter
Engine speed signal T R
Rear window defogger signal R T
Heater fan switch signal R T
Air conditioner switch signal R T
MI signal T R
Engine coolant temperature signal T R
Fuel consumption signal T R
Vehicle speed signal R T
Seat belt reminder signal R T
Headlamp switch signal T R
Flashing indicator signal T R
Engine cooling fan speed signal T R
Child lock indicator signal T R
Door switches state signal T R
A/C compressor signal T R

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-307
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
TROUBLE DIAGNOSES FOR SYMPTOMSPFP:00100
Wiring Diagram — AT — NONDTCECS007QZ
YAT 3 6 4

AT-308
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
YAT 3 6 5

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-309
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
1. O/D OFF Indicator Lamp Does Not Come OnECS007R0
SYMPTOM:
O/D OFF indicator lamp does not come on for about 2 seconds when turning ignition switch to “ON”.
1.CHECK GROUND CIRCUIT
1. Turn ignition switch to “OFF” position.
2. Disconnect A/T device harness connector.
3. Check continuity between A/T device terminals 7 and ground.
If OK, check harness for short to ground and short to power.
OK or NG
OK >> GO TO 2
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
2.CHECK LAMP CIRCUIT
1. Turn ignition switch to “ON” position.
(Do not start engine.)
2. Disconnect A/T device harness connector.
3. Check voltage between A/T device terminals 8 and ground.
OK or NG
OK >> GO TO 3
NG >> Check the following items:
●Harness for short or open between ignition switch and
TCM terminals 8.
3.CHECK OVERDRINE CONTROL SWITCH
1. Disconnect A/T device harness connector.
2. Check continuity between A/T device terminals 7 and 8.
OK or NG
OK >>INSPECTION END.
NG >> Repair or replace A/T device.
2. Engine Cannot Be Started In “P” and “N” PositionECS007R1
SYMPTOM:
●Engine cannot be started with selector lever in “P” or “N” position.
●Engine can be started with selector lever in “D”, “2”, “1” or “R” position. Continuity should exist.
MCIB0007E
Voltage: Battery voltage
MCIB0008E
OVERDRIVE CONTROL
SW “ON”:Continuity should not exist.
OVERDRIVE CONTROL
SW “OFF”:Continuity should exist.
SCIA0767E

AT-310
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
1. CHECK PNP SWITCH CIRCUIT
With CONSULT-II
Does “TCM INPUT SIGNALS” in “DATA MONITOR” show damage to PNP switch circuit?
Without CONSULT-II
Does self-diagnosis show damage to PNP switch circuit?
Ye s o r N o
Yes >> Check PNP switch circuit. Refer to AT- 3 3 3 , "21. TCM
Self-diagnosis Does Not Activate (PNP & Overdrive
Control Switches, and Throttle Position Sensor Circuit
Checks)" .
No >> GO TO 2
2. CHECK PNP SWITCH INSPECTION
Check for short or open of PNP switch harness connector terminals 1 and 2.
Refer to AT- 3 3 3 , "
21. TCM Self-diagnosis Does Not Activate (PNP &
Overdrive Control Switches, and Throttle Position Sensor Circuit
Checks)" .
OK or NG
OK >> GO TO 3
NG >> Repair or replace PNP switch.
3. CHECK STARTING SYSTEM
Check starting system. Refer to SC-13, "STARTING SYSTEM".
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
3. In “P” Position, Vehicle Moves Forward Or Backward When PushedECS007R2
SYMPTOM:
Vehicle moves when it is pushed forward or backward with selector lever in “P” position.
1. CHECK PARKING COMPONENTS
Check parking components. Refer to AT- 4 1 3 , "
Output Shaft, Idler
Gear, Reduction Pinion Gear and Bearing Retainer" .
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
SCIA0706E
SAT408JA
SAT282F

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-311
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
4. In “N” Position, Vehicle MovesECS007R3
SYMPTOM:
Vehicle moves forward or backward when selecting “N” position.
1.CHECK PNP SWITCH CIRCUIT
With CONSULT-II
Does “TCM INPUT SIGNALS” in “DATA MONITOR” show damage to PNP switch circuit?
Without CONSULT-II
Does self-diagnosis show damage to PNP switch circuit?
Ye s o r N o
Yes >> Check PNP switch circuit. Refer to AT- 3 3 3 , "21. TCM
Self-diagnosis Does Not Activate (PNP & Overdrive
Control Switches, and Throttle Position Sensor Circuit
Checks)" .
No >> GO TO 2
2.CHECK CONTROL CABLE
Check control cable. Refer to AT-408, "
Control Cable Adjustment" .
OK or NG
OK >> GO TO 3
NG >> Adjust control cable. Refer to AT- 4 0 8 , "
Control Cable
Adjustment" .
3.CHECK A/T FLUID LEVEL
Check A/T fluid level again.
OK or NG
OK >> GO TO 4
NG >> Refill ATF.
SCIA0706E
SAT023JB
SAT638A

AT-312
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
4. CHECK A/T FLUID CONDITION
1. Remove oil pan, refer to AT- 4 0 6 , "
REMOVAL" .
2. Check A/T fluid condition.
OK or NG
OK >> GO TO 5
NG >> 1. Disassemble A/T.
2. Check the following items:
–Forward clutch assembly
–Overrun clutch assembly
–Reverse clutch assembly
5. CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
5. Large Shock. “N” → “R” PositionECS007R4
SYMPTOM:
There is large shock when changing from “N” to “R” position.
1. CHECK SELF-DIAGNOSTIC RESULTS
Does self-diagnosis show damage to A/T fluid temperature sensor,
line pressure solenoid valve or throttle position sensor circuit?
Ye s o r N o
Ye s > >●Check damaged circuit. Refer to the following items.
–AT- 3 8 8 , "LINE PRESSURE SOLENOID VALVE"
–THROTTLE POSITION SENSOR: AT- 3 5 2 , "ACCELE
RATOR PEDAL POSITION (APP) SENSOR"
–AT- 3 7 7 , "BATT/FLUID TEMP SEN (A/T FLUID TEMP
SENSOR CIRCUIT AND TCM POWER SOURCE)"
No >> GO TO 2
2. CHECK THROTTLE POSITION SENSOR*
*: This sensor means accelerator pedal position (APP) sensor.
Refer to AT- 3 5 2 , "
ACCELE RATOR PEDAL POSITION (APP) SEN-
SOR" .
OK or NG
OK >> GO TO 3
NG >> Repair or replace Accelerator pedal position(APP)sen-
sor.
SAT171B
SCIA0769E
MCIB9006E

TROUBLE DIAGNOSES FOR SYMPTOMS
AT-313
[EXC.F/EURO-OBD]
D
E
F
G
H
I
J
K
L
MA
B
AT
3.CHECK LINE PRESSURE
Check line pressure at idle with selector lever in “D” position. Refer
to AT-265, "
Line Pressure Test" .
OK or NG
OK >> GO TO 4
NG >>1.Remove control valve assembly. Refer to AT- 4 0 6 ,
"Control Valve Assembly and Accumulators" .
2. Check the following items:
–Valves to control line pressure (Pressure regulator
valve, pressure modifier valve, pilot valve and pilot fil-
ter)
–Line pressure solenoid valve
4.CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> 1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
6. Vehicle Does Not Creep Backward In “R” PositionECS007R5
SYMPTOM:
Vehicle does not creep backward when selecting “R” position.
1.CHECK A/T FLUID LEVEL
Check A/T fluid level again.
OK or NG
OK >> GO TO 2
NG >> Refill ATF.
SAT494G
SAT638A

AT-314
[EXC.F/EURO-OBD]
TROUBLE DIAGNOSES FOR SYMPTOMS
2. CHECK STALL TEST
Check stall revolution with selector lever in “1” and “R” positions.
Refer to AT-262, "
Stall Test" .
OK or NG
OK >> GO TO 3
OK in “1” position, NG in “R” position>>1.Remove control valve
assembly. Refer to AT- 4 0 6 , "
Control Valve Assembly
and Accumulators" .
2. Check the following items:
–Valves to control line pressure (Pressure regulator
valve, pressure modifier valve, pilot valve and pilot fil-
ter)
–Line pressure solenoid valve (AT- 3 8 8 , "LINE PRES-
SURE SOLENOID VALVE" )
3. Disassemble A/T.
4. Check the following items:
–Oil pump assembly
–Torque converter
–Reverse clutch assembly
–High clutch assembly
–Low & reverse brake assembly
–Low one-way clutch
NG in both “1” and “R” positions>>GO TO 6
3. CHECK LINE PRESSURE
Check line pressure at idle with selector lever in “R” position. Refer
to AT- 2 6 5 , "
Line Pressure Test" .
OK or NG
OK >> GO TO 4
NG >> 1. Remove control valve assembly. Refer to AT- 4 0 6 ,
"Control Valve Assembly and Accumulators" .
2. Check the following items:
–Valves to control line pressure (Pressure regulator
valve, pressure modifier valve, pilot valve and pilot fil-
ter)
–Line pressure solenoid valve (AT- 3 8 8 , "LINE PRES-
SURE SOLENOID VALVE" )
3. Disassemble A/T.
4. Check the following item:
–Oil pump assembly
SAT493G
SAT494G