2007 NISSAN TIIDA TCM

ON BOARD DIAGNOSTIC (OBD) SYSTEM
EC-777
< FUNCTION DIAGNOSIS >[MR18DE]
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NOTE:
Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.
ACTIVE TEST MODE
Test Item
IGN TIMING g·m/s Indicates the mass airflow computed by ECM ac-
cording to the signal voltage of the mass airflow
sensor.
PURG VOL C/V % Indicates the EVAP canister purge volume con-
trol solenoid valve control value computed by the
ECM according to the input signals.
 The opening becomes larger as the value in-
creases.
INT/V TIM (B1)°CA Indicates [°CA] of intake camshaft advance an-
gle.
INT/V SOL-B1
% The control value of the intake valve timing con-
trol solenoid valve (determined by ECM accord-
ing to the input signals) is indicated.
 The advance angle becomes larger as the value
increases.
AIR COND RLY ON/OFF The air conditioner relay control condition (deter-
mined by ECM according to the input signals) is
indicated.
FUEL PUMP RLY ON/OFF Indicates the fuel pump relay control condition
determined by ECM according to the input sig-
nals.
THRTL RELAY ON/OFF Indicates the throttle control motor relay control
condition determined by the ECM according to
the input signals.
COOLING FAN HI/LOW/OFF Indicates the condition of the cooling fan (deter-
mined by ECM according to the input signals).
HI: High speed operation
LOW: Low speed operation
OFF: Stop
HO2S1 HTR (B1) ON/OFF Indicates [ON/OFF] condition of heated oxygen
sensor 1 heater determined by ECM accordining
to the input signals.
HO2S2 HTR (B1) ON/OFF Indicates [ON/OFF] condition of heated oxygen
sensor 2 heater determined by ECM according to
the input signals.
VEHICLE SPEED km/h or mph The vehicle speed computed from the vehicle
speed signal sent from TCM is displayed.
IDL A/V LEARN YET/CMPLT Display the condition of Idle Air Volume Learning
YET: Idle air volume learning has not been per-
formed yet.
CMPLT: Idle air volume learning has already
been performed successfully.
TRVL AFTER MI km/h or mph  Distance traveled while MI is activated.
O2SEN HTR DTY % Indicates the heated oxygen sensor 1 heater con-
trol value computed by the ECM according to the
input signals.
AC PRESS SEN V The signal voltage from the refrigerant pressure
sensor is displayed.
VHCL SPEED SE km/h or mph The vehicle speed computed from the vehicle
speed signal sent from combination meter is dis-
played. Monitored item Unit Description Remarks

EC-940
< COMPONENT DIAGNOSIS >[MR18DE]
P1574 ASCD VEHICLE SPEED SENSOR
P1574 ASCD VEHICLE SPEED SENSOR
DescriptionINFOID:0000000001161919
The ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from combina-
tion meter, and the other is from TCM (Transmission control module). The ECM uses these signals for ASCD
control. Refer to EC-728, "
System Description" for ASCD functions.
DTC LogicINFOID:0000000001161920
DTC DETECTION LOGIC
NOTE:
If DTC P1574 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-793, "
DTC Logic".
If DTC P1574 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer
to EC-794, "
DTC Logic".
If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500. Refer
to EC-878, "
DTC Logic"
If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer
to EC-880, "
DTC Logic"
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine.
2. Drive the vehicle at more than 40 km/h (25 MPH).
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle.
If a road test is expected to be easier, it is unnecessary to lift the vehicle.
3. Check DTC.
Is DTC detected?
YES >> Go to EC-940, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000001161921
1.CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”
Refer to BRC-105, "
CONSULT-III Function (ABS)".
Is the inspection result normal?
YES >> GO TO 2.
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
P1574ASCD vehicle speed
sensorECM detects a difference between two vehicle
speed signals is out of the specified range. Harness or connectors
(The CAN communication line is open or
shorted.)
(Combination meter circuit is open or shorted.)
 Combination meter
 ABS actuator and electric unit (control unit)
 Wheel sensor
ECM

TERMINOLOGY
GI-31
< HOW TO USE THIS MANUAL >
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***: Not applicableTransmission control module TCM A/T control unit
Turbocharger TC Turbocharger
Vehicle speed sensor VSS Vehicle speed sensor
Volume air flow sensor VAFS Air flow meter
Warm up oxidation catalyst WU-OC Catalyst
Warm up oxidation catalytic converter sys-
temWU-OC system ***
Warm up three way catalyst WU-TWC Catalyst
Warm up three way catalytic converter sys-
temWU-TWC system ***
Wide open throttle position switch WOTP switch Full switchNEW TERMNEW ACRONYM /
ABBREVIATIONOLD TERM

PRECAUTIONS
GI-45
< PRECAUTION >
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 Use hand tools, power tools (disassembly only) and recommended
special tools where specified for safe and efficient service repairs.
 When repairing the fuel, oil, water, vacuum or exhaust systems,
check all affected lines for leaks.
 Before servicing the vehicle:
Protect fenders, upholstery and carpeting with appropriate covers.
Take caution that keys, buckles or buttons do not scratch paint.
WARNING:
To prevent ECM from storing the diagnostic trouble codes, do not carelessly disconnect the harness
connectors which are related to the engine control system and TCM (transmission control module)
system. The connectors should be disconnected only when working according to the WORK FLOW of
TROUBLE DIAGNOSES in EC and AT sections.
Precaution for Three Way CatalystINFOID:0000000001606119
If a large amount of unburned fuel flows into the catalyst, the catalyst temperature will be excessively high. To
prevent this, follow the instructions.
 Use unleaded gasoline only. Leaded gasoline will seriously damage the three way catalyst.
 When checking for ignition spark or measuring engine compression, make tests quickly and only when nec-
essary.
 Do not run engine when the fuel tank level is low, otherwise the engine may misfire, causing damage to the
catalyst.
Do not place the vehicle on flammable material. Keep flammable material off the exhaust pipe and the three
way catalyst.
Precaution for Fuel (Unleaded Regular Gasoline Recommended)INFOID:0000000001606120
Use unleaded regular gasoline with an octane rating of at least 87 AKI (Anti-Knock Index) number (Research
octane number 91).
CAUTION:
Do not use leaded gasoline. Using leaded gasoline will damage the three way catalyst. Do not use E-85
fuel (85% fuel ethanol, 15% unleaded gasoline) unless the vehicle is specifically designed for E-85 fuel
(i.e. Flexible Fuel Vehicle - FFV models). Using a fuel other than that specified could adversely affect
the emission control devices and systems, and could also affect the warranty coverage validity.
PBIC0190E
SGI234

LAN-2
BCM BRANCH LINE CIRCUIT ..........................48
Diagnosis Procedure ..............................................48
DLC BRANCH LINE CIRCUIT ...........................49
Diagnosis Procedure ..............................................49
EPS BRANCH LINE CIRCUIT ...........................50
Diagnosis Procedure ..............................................50
I-KEY BRANCH LINE CIRCUIT ........................51
Diagnosis Procedure ..............................................51
M&A BRANCH LINE CIRCUIT ..........................52
Diagnosis Procedure ..............................................52
STRG BRANCH LINE CIRCUIT ........................53
Diagnosis Procedure ..............................................53
AV BRANCH LINE CIRCUIT .............................54
Diagnosis Procedure ..............................................54
ABS BRANCH LINE CIRCUIT ..........................55
Diagnosis Procedure ..............................................55
TCM BRANCH LINE CIRCUIT ..........................56
Diagnosis Procedure ..............................................56
IPDM-E BRANCH LINE CIRCUIT .....................57
Diagnosis Procedure ..............................................57
CAN COMMUNICATION CIRCUIT ....................58
Diagnosis Procedure ..............................................58
CAN SYSTEM (TYPE 1)
COMPONENT DIAGNOSIS ........................
60
MAIN LINE BETWEEN DLC AND ABS CIR-
CUIT ...................................................................
60
Diagnosis Procedure ..............................................60
ECM BRANCH LINE CIRCUIT ..........................61
Diagnosis Procedure ..............................................61
BCM BRANCH LINE CIRCUIT ..........................62
Diagnosis Procedure ..............................................62
DLC BRANCH LINE CIRCUIT ...........................63
Diagnosis Procedure ..............................................63
EPS BRANCH LINE CIRCUIT ...........................64
Diagnosis Procedure ..............................................64
M&A BRANCH LINE CIRCUIT ..........................65
Diagnosis Procedure ..............................................65
ABS BRANCH LINE CIRCUIT ..........................66
Diagnosis Procedure ..............................................66
IPDM-E BRANCH LINE CIRCUIT .....................67
Diagnosis Procedure ..............................................67
CAN COMMUNICATION CIRCUIT ....................68
Diagnosis Procedure ..............................................68
CAN SYSTEM (TYPE 2)
COMPONENT DIAGNOSIS .......................
70
MAIN LINE BETWEEN DLC AND AV CIR-
CUIT ...................................................................
70
Diagnosis Procedure ...............................................70
MAIN LINE BETWEEN AV AND ABS CIR-
CUIT ...................................................................
71
Diagnosis Procedure ...............................................71
ECM BRANCH LINE CIRCUIT ..........................73
Diagnosis Procedure ...............................................73
BCM BRANCH LINE CIRCUIT ..........................74
Diagnosis Procedure ...............................................74
DLC BRANCH LINE CIRCUIT ..........................75
Diagnosis Procedure ...............................................75
EPS BRANCH LINE CIRCUIT ...........................76
Diagnosis Procedure ...............................................76
M&A BRANCH LINE CIRCUIT ..........................77
Diagnosis Procedure ...............................................77
AV BRANCH LINE CIRCUIT .............................78
Diagnosis Procedure ...............................................78
ABS BRANCH LINE CIRCUIT ..........................79
Diagnosis Procedure ...............................................79
IPDM-E BRANCH LINE CIRCUIT .....................80
Diagnosis Procedure ...............................................80
CAN COMMUNICATION CIRCUIT ...................81
Diagnosis Procedure ...............................................81
CAN SYSTEM (TYPE 3)
COMPONENT DIAGNOSIS .......................
83
MAIN LINE BETWEEN DLC AND ABS CIR-
CUIT ...................................................................
83
Diagnosis Procedure ...............................................83
ECM BRANCH LINE CIRCUIT ..........................84
Diagnosis Procedure ...............................................84
BCM BRANCH LINE CIRCUIT ..........................85
Diagnosis Procedure ...............................................85
DLC BRANCH LINE CIRCUIT ..........................86
Diagnosis Procedure ...............................................86
EPS BRANCH LINE CIRCUIT ...........................87
Diagnosis Procedure ...............................................87
I-KEY BRANCH LINE CIRCUIT ........................88
Diagnosis Procedure ...............................................88
M&A BRANCH LINE CIRCUIT ..........................89
Diagnosis Procedure ...............................................89

LAN
LAN-7
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CAN SYSTEM (TYPE 17)
COMPONENT DIAGNOSIS .......................
260
MAIN LINE BETWEEN DLC AND ABS CIR-
CUIT ..................................................................
260
Diagnosis Procedure .............................................260
ECM BRANCH LINE CIRCUIT .........................261
Diagnosis Procedure .............................................261
BCM BRANCH LINE CIRCUIT ........................262
Diagnosis Procedure .............................................262
DLC BRANCH LINE CIRCUIT .........................263
Diagnosis Procedure .............................................263
EPS BRANCH LINE CIRCUIT .........................264
Diagnosis Procedure .............................................264
M&A BRANCH LINE CIRCUIT ........................265
Diagnosis Procedure .............................................265
ABS BRANCH LINE CIRCUIT .........................266
Diagnosis Procedure .............................................266
TCM BRANCH LINE CIRCUIT .........................267
Diagnosis Procedure .............................................267
IPDM-E BRANCH LINE CIRCUIT ....................268
Diagnosis Procedure .............................................268
CAN COMMUNICATION CIRCUIT ..................269
Diagnosis Procedure .............................................269
CAN SYSTEM (TYPE 18)
COMPONENT DIAGNOSIS .......................
271
MAIN LINE BETWEEN DLC AND AV CIR-
CUIT ..................................................................
271
Diagnosis Procedure .............................................271
MAIN LINE BETWEEN AV AND ABS CIR-
CUIT ..................................................................
272
Diagnosis Procedure .............................................272
ECM BRANCH LINE CIRCUIT .........................274
Diagnosis Procedure .............................................274
BCM BRANCH LINE CIRCUIT ........................275
Diagnosis Procedure .............................................275
DLC BRANCH LINE CIRCUIT .........................276
Diagnosis Procedure .............................................276
EPS BRANCH LINE CIRCUIT .........................277
Diagnosis Procedure .............................................277
M&A BRANCH LINE CIRCUIT ........................278
Diagnosis Procedure .............................................278
AV BRANCH LINE CIRCUIT ............................279
Diagnosis Procedure .............................................279
ABS BRANCH LINE CIRCUIT ........................280
Diagnosis Procedure .............................................280
TCM BRANCH LINE CIRCUIT ........................281
Diagnosis Procedure .............................................281
IPDM-E BRANCH LINE CIRCUIT ...................282
Diagnosis Procedure .............................................282
CAN COMMUNICATION CIRCUIT .................283
Diagnosis Procedure .............................................283
CAN SYSTEM (TYPE 19)
COMPONENT DIAGNOSIS .......................
285
MAIN LINE BETWEEN DLC AND ABS CIR-
CUIT ................................................................
285
Diagnosis Procedure .............................................285
ECM BRANCH LINE CIRCUIT .......................286
Diagnosis Procedure .............................................286
BCM BRANCH LINE CIRCUIT .......................287
Diagnosis Procedure .............................................287
DLC BRANCH LINE CIRCUIT ........................288
Diagnosis Procedure .............................................288
EPS BRANCH LINE CIRCUIT ........................289
Diagnosis Procedure .............................................289
I-KEY BRANCH LINE CIRCUIT ......................290
Diagnosis Procedure .............................................290
M&A BRANCH LINE CIRCUIT .......................291
Diagnosis Procedure .............................................291
ABS BRANCH LINE CIRCUIT ........................292
Diagnosis Procedure .............................................292
TCM BRANCH LINE CIRCUIT ........................293
Diagnosis Procedure .............................................293
IPDM-E BRANCH LINE CIRCUIT ...................294
Diagnosis Procedure .............................................294
CAN COMMUNICATION CIRCUIT .................295
Diagnosis Procedure .............................................295
CAN SYSTEM (TYPE 20)
COMPONENT DIAGNOSIS .......................
297
MAIN LINE BETWEEN DLC AND AV CIR-
CUIT ................................................................
297
Diagnosis Procedure .............................................297
MAIN LINE BETWEEN AV AND ABS CIR-
CUIT ................................................................
298
Diagnosis Procedure .............................................298
ECM BRANCH LINE CIRCUIT .......................300
Diagnosis Procedure .............................................300

LAN-8
BCM BRANCH LINE CIRCUIT ........................301
Diagnosis Procedure .............................................301
DLC BRANCH LINE CIRCUIT .........................302
Diagnosis Procedure .............................................302
EPS BRANCH LINE CIRCUIT .........................303
Diagnosis Procedure .............................................303
I-KEY BRANCH LINE CIRCUIT ......................304
Diagnosis Procedure .............................................304
M&A BRANCH LINE CIRCUIT ........................305
Diagnosis Procedure .............................................305
AV BRANCH LINE CIRCUIT ...........................306
Diagnosis Procedure .............................................306
ABS BRANCH LINE CIRCUIT ........................307
Diagnosis Procedure .............................................307
TCM BRANCH LINE CIRCUIT ........................308
Diagnosis Procedure .............................................308
IPDM-E BRANCH LINE CIRCUIT ...................309
Diagnosis Procedure .............................................309
CAN COMMUNICATION CIRCUIT ..................310
Diagnosis Procedure .............................................310
CAN SYSTEM (TYPE 21)
COMPONENT DIAGNOSIS .......................
312
MAIN LINE BETWEEN DLC AND ABS CIR-
CUIT .................................................................
312
Diagnosis Procedure .............................................312
ECM BRANCH LINE CIRCUIT ........................313
Diagnosis Procedure .............................................313
BCM BRANCH LINE CIRCUIT ........................314
Diagnosis Procedure .............................................314
DLC BRANCH LINE CIRCUIT .........................315
Diagnosis Procedure .............................................315
EPS BRANCH LINE CIRCUIT .........................316
Diagnosis Procedure .............................................316
M&A BRANCH LINE CIRCUIT ........................317
Diagnosis Procedure .............................................317
STRG BRANCH LINE CIRCUIT ......................318
Diagnosis Procedure .............................................318
ABS BRANCH LINE CIRCUIT ........................319
Diagnosis Procedure .............................................319
TCM BRANCH LINE CIRCUIT ........................320
Diagnosis Procedure .............................................320
IPDM-E BRANCH LINE CIRCUIT ...................321
Diagnosis Procedure .............................................321
CAN COMMUNICATION CIRCUIT ..................322
Diagnosis Procedure .............................................322
CAN SYSTEM (TYPE 22)
COMPONENT DIAGNOSIS ......................
324
MAIN LINE BETWEEN DLC AND AV CIR-
CUIT ..................................................................
324
Diagnosis Procedure .............................................324
MAIN LINE BETWEEN AV AND ABS CIR-
CUIT ..................................................................
325
Diagnosis Procedure .............................................325
ECM BRANCH LINE CIRCUIT .........................327
Diagnosis Procedure .............................................327
BCM BRANCH LINE CIRCUIT .........................328
Diagnosis Procedure .............................................328
DLC BRANCH LINE CIRCUIT .........................329
Diagnosis Procedure .............................................329
EPS BRANCH LINE CIRCUIT ..........................330
Diagnosis Procedure .............................................330
M&A BRANCH LINE CIRCUIT .........................331
Diagnosis Procedure .............................................331
STRG BRANCH LINE CIRCUIT .......................332
Diagnosis Procedure .............................................332
AV BRANCH LINE CIRCUIT ............................333
Diagnosis Procedure .............................................333
ABS BRANCH LINE CIRCUIT .........................334
Diagnosis Procedure .............................................334
TCM BRANCH LINE CIRCUIT .........................335
Diagnosis Procedure .............................................335
IPDM-E BRANCH LINE CIRCUIT ....................336
Diagnosis Procedure .............................................336
CAN COMMUNICATION CIRCUIT ..................337
Diagnosis Procedure .............................................337
CAN SYSTEM (TYPE 23)
COMPONENT DIAGNOSIS ......................
339
MAIN LINE BETWEEN DLC AND ABS CIR-
CUIT ..................................................................
339
Diagnosis Procedure .............................................339
ECM BRANCH LINE CIRCUIT .........................340
Diagnosis Procedure .............................................340
BCM BRANCH LINE CIRCUIT .........................341
Diagnosis Procedure .............................................341
DLC BRANCH LINE CIRCUIT .........................342
Diagnosis Procedure .............................................342

LAN
LAN-9
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EPS BRANCH LINE CIRCUIT .........................343
Diagnosis Procedure .............................................343
I-KEY BRANCH LINE CIRCUIT .......................344
Diagnosis Procedure .............................................344
M&A BRANCH LINE CIRCUIT ........................345
Diagnosis Procedure .............................................345
STRG BRANCH LINE CIRCUIT .......................346
Diagnosis Procedure .............................................346
ABS BRANCH LINE CIRCUIT .........................347
Diagnosis Procedure .............................................347
TCM BRANCH LINE CIRCUIT .........................348
Diagnosis Procedure .............................................348
IPDM-E BRANCH LINE CIRCUIT ....................349
Diagnosis Procedure .............................................349
CAN COMMUNICATION CIRCUIT ..................350
Diagnosis Procedure .............................................350
CAN SYSTEM (TYPE 24)
COMPONENT DIAGNOSIS .......................
352
MAIN LINE BETWEEN DLC AND AV CIR-
CUIT ..................................................................
352
Diagnosis Procedure .............................................352
MAIN LINE BETWEEN AV AND ABS CIR-
CUIT ..................................................................
353
Diagnosis Procedure .............................................353
ECM BRANCH LINE CIRCUIT .........................355
Diagnosis Procedure .............................................355
BCM BRANCH LINE CIRCUIT ........................356
Diagnosis Procedure .............................................356
DLC BRANCH LINE CIRCUIT .........................357
Diagnosis Procedure .............................................357
EPS BRANCH LINE CIRCUIT .........................358
Diagnosis Procedure .............................................358
I-KEY BRANCH LINE CIRCUIT .......................359
Diagnosis Procedure .............................................359
M&A BRANCH LINE CIRCUIT ........................360
Diagnosis Procedure .............................................360
STRG BRANCH LINE CIRCUIT .......................361
Diagnosis Procedure .............................................361
AV BRANCH LINE CIRCUIT ............................362
Diagnosis Procedure .............................................362
ABS BRANCH LINE CIRCUIT .........................363
Diagnosis Procedure .............................................363
TCM BRANCH LINE CIRCUIT .........................364
Diagnosis Procedure .............................................364
IPDM-E BRANCH LINE CIRCUIT ...................365
Diagnosis Procedure .............................................365
CAN COMMUNICATION CIRCUIT .................366
Diagnosis Procedure .............................................366
CAN SYSTEM (TYPE 25)
COMPONENT DIAGNOSIS .......................
368
MAIN LINE BETWEEN DLC AND ABS CIR-
CUIT ................................................................
368
Diagnosis Procedure .............................................368
ECM BRANCH LINE CIRCUIT .......................369
Diagnosis Procedure .............................................369
BCM BRANCH LINE CIRCUIT .......................370
Diagnosis Procedure .............................................370
DLC BRANCH LINE CIRCUIT ........................371
Diagnosis Procedure .............................................371
EPS BRANCH LINE CIRCUIT ........................372
Diagnosis Procedure .............................................372
M&A BRANCH LINE CIRCUIT .......................373
Diagnosis Procedure .............................................373
ABS BRANCH LINE CIRCUIT ........................374
Diagnosis Procedure .............................................374
IPDM-E BRANCH LINE CIRCUIT ...................375
Diagnosis Procedure .............................................375
CAN COMMUNICATION CIRCUIT .................376
Diagnosis Procedure .............................................376
CAN SYSTEM (TYPE 26)
COMPONENT DIAGNOSIS .......................
378
MAIN LINE BETWEEN DLC AND AV CIR-
CUIT ................................................................
378
Diagnosis Procedure .............................................378
MAIN LINE BETWEEN AV AND ABS CIR-
CUIT ................................................................
379
Diagnosis Procedure .............................................379
ECM BRANCH LINE CIRCUIT .......................381
Diagnosis Procedure .............................................381
BCM BRANCH LINE CIRCUIT .......................382
Diagnosis Procedure .............................................382
DLC BRANCH LINE CIRCUIT ........................383
Diagnosis Procedure .............................................383
EPS BRANCH LINE CIRCUIT ........................384
Diagnosis Procedure .............................................384
M&A BRANCH LINE CIRCUIT .......................385