2007 NISSAN TIIDA wiring

EC-1000
< ECU DIAGNOSIS >[MR18DE]
ECM
Wiring Diagram - ENGINE CONTROL SYSTEM -
INFOID:0000000001161991
ALBWA0182GB

PRECAUTIONS
EC-1029
< PRECAUTION >[MR18DE]
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000001161999
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRC and SB section of this Service Man-
ual.
WARNING:
 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/INFINITI dealer.
 Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SRC section.
 Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.
Precaution for Procedure without Cowl Top CoverINFOID:0000000001162000
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
Precautions For Xenon Headlamp ServiceINFOID:0000000001679886
WARNING:
Comply with the following warnings to prevent any serious accident.
 Disconnect the battery cable (negative terminal) or the power supply fuse before installing, remov-
ing, or touching the xenon headlamp (bulb included). The xenon headlamp contains high-voltage
generated parts.
 Never work with wet hands.
 Check the xenon headlamp ON-OFF status after assembling it to the vehicle. Never turn the xenon
headlamp ON in other conditions. Connect the power supply to the vehicle-side connector.
(Turning it ON outside the lamp case may cause fire or visual impairments.)
 Never touch the bulb glass immediately after turning it OFF. It is extremely hot.
CAUTION:
Comply with the following cautions to prevent any error and malfunction.
 Install the xenon bulb securely. (Insufficient bulb socket installation may melt the bulb, the connec-
tor, the housing, etc. by high-voltage leakage or corona discharge.)
 Never perform HID circuit inspection with a tester.
 Never touch the xenon bulb glass with hands. Never put oil and grease on it.
 Dispose of the used xenon bulb after packing it in thick vinyl without breaking it.
 Never wipe out dirt and contamination with organic solvent (thinner, gasoline, etc.).
PIIB3706J

EC-1040
< BASIC INSPECTION >[K9K]
DIAGNOSIS AND REPAIR WORKFLOW
 Malfunctions are declared as either present or stored (depending on whether they appeared in a certain con-
text and have disappeared since, or whether they remain present but have not been diagnosed within the
current context).
 The present or stored status of malfunctions should be taken into consideration when the diagnostic tool is
used following the + after ignition supply being switched on (without acting on the system components).
 For a present malfunction, apply the procedure described in the Interpretation of malfunction section.
 For a stored malfunction, note the malfunctions displayed and apply the instructions in the Notes section.
 If the malfunction is confirmed when the instructions in the Notes section are applied, the malfunction is
present. Deal with the malfunction
 If the malfunction is not confirmed, check:
- the electrical lines which correspond to the malfunction,
- the connectors for these lines (for oxidation, bent pins, etc),
- the condition of the wires (insulation has melted or been cut, abrasions),
- the resistance of the component detected as malfunction.
Conformity Check
 The aim of the conformity check is to check data that does not produce a malfunction on the diagnostic tool
because the data is inconsistent. Therefore, this phase is used to:
- carry out malfunction finding on malfunctions that do not have a malfunction display, and which may corre-
spond to a customer complaint.
- check that the system is operating correctly and that there is no risk of a malfunction recurring after repairs.
 This section gives the malfunction finding procedures for statuses and parameters and the conditions for
checking them.
 If a status is not behaving normally or a parameter is outside the permitted tolerance values, consult the cor-
responding malfunction finding page.
Customer Complaints - Malfunction finding chart
If the test with the diagnostic tool is OK but the customer complaint is still present, the malfunction should be
processed by customer complaint.
NOTE:
A synopsis of the general procedure to follow is provided on the preceding page in the form of a flow
chart.
Malfunction Finding Procedure (Wiring Check)
Diagnostics malfunctions
Removing the connectors and/or handling the wirings may temporarily remove the origin of a DTC. The mea-
surements of the electrical voltages, resistance and insulation are generally correct, especially when the DTC
is not present at the time of the analysis (stored DTC).
Visual Check
Look for impacts under the bonnet and in the passenger compartment.
Perform a careful check of the protections, insulation and correct running of wirings.
Look for traces of oxidation.
Tactile Check
While manipulating the wirings, use the diagnostic tool to detect a change in DTC status from “stored” to
“present”.
Ensure that the connectors are correctly engaged.
Apply light stresses to the connectors.
Gently manipulate the wiring harness.
If a change of status occurs, try to isolate the origin of the incident.
Inspection of each component
Disconnect the connectors and check the appearance of the clips and blades and their crimping (no crimping
on the insulating part).
Check that the clips and blades are properly engaged in the receptacles.
Ensure that there is no rebounding of clips or blades at the time of connection.
Check the contact pressure of the clips using a suitable model blade.
Resistance Control
Test the continuity of the lines in their entirety, then section by section.
Try to create a short-circuit to earth, on the + 12 V or with another wire.
If a DTC is detected, repair or replace the wiring.
REMINDERS
Trouble Diagnosis:

CAN COMMUNICATION
EC-1103
< FUNCTION DIAGNOSIS >[K9K]
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CAN COMMUNICATION
System DescriptionINFOID:0000000001162546
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.
Refer to LAN-33, "
CAN Communication Signal Chart", about CAN communication for detail.

EC-1236
< ECU DIAGNOSIS >[K9K]
ECM
Wiring Diagram - ENGINE CONTROL SYSTEM -
INFOID:0000000001162696
ALBWA0168GB

ENGINE DOES NOT START OR STARTS WITH DIFFICULTY
EC-1257
< SYMPTOM DIAGNOSIS >[K9K]
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ENGINE DOES NOT START OR STARTS WITH DIFFICULTY
DescriptionINFOID:0000000001162701
CHART 2: ENGINE DOES NOT START OR STARTS WITH DIFFICULTY
Diagnosis ProcedureINFOID:0000000001162702
1.CHECK FUEL
Check that the fuel reservoir is correctly filled and with the right fuel.
>> GO TO 2.
2.CHECK BATTERY
Check the battery. Refer to PG-6, "
Removal and Installation".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace battery. Refer to PG-6, "
Removal and Installation"
3.CHECK STARTER MOTOR
Check the starter and starter motor relay. Refer to STR-35, "
Removal and Installation".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace starter motor or starter relay. Refer to STR-35, "
Removal and Installation"
4.CHECK ECM RELAY
Check the ECM relay. Refer to EC-1184, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace IPDM E/R. Refer to PCS-30, "
Removal and Installation of IPDM E/R".
5.CHECK ECM POWER SUPPLY AND GROUND CIRCUIT
Check ECM power supply and ground circuit. Refer to EC-1106, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair or replace harness or connector.
6.CHECK WIRING HARNESS
Visually check the condition of the engine wiring harness.
Is the inspection result normal?
YES >> GO TO 7.
NO >> Repair or replace harness or connector.
7.CHECK CAMSHAFT POSITION SENSOR
Check the camshaft position sensor. Refer to EC-1152, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 8.
NO >> Repair or replace.
8.CHECK CAMSHAFT
Check the camshaft. Refer to EM-300, "
Inspection".
Is the inspection result normal?
YES >> GO TO 9.
NO >> Replace camshaft. Refer to EM-298, "
Removal and Installation".
9.CHECK AIR INTAKE SYSTEM
Check air intake system. Refer to EM-269, "
Removal and Installation".

IMPOSSIBLE TO SHUT OFF ENGINE
EC-1261
< SYMPTOM DIAGNOSIS >[K9K]
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IMPOSSIBLE TO SHUT OFF ENGINE
DescriptionINFOID:0000000001162705
CHART 4: IMPOSSIBLE TO SHUT OFF ENGINE
Diagnosis ProcedureINFOID:0000000001162706
1.CHECK ECM POWER SUPPLY AND GROUND CIRCUIT
Check ECM power supply and ground circuit. Refer to EC-1106, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace harness or connector.
2.CHECK WIRING HARNESS
Visually check the condition of the engine wiring harness.
Is the inspection result normal?
YES >>INSPECTION END
NO >> Repair or replace harness or connector.

EC-1262
< SYMPTOM DIAGNOSIS >[K9K]
ENGINE IDLE SPEED TOO HIGH
ENGINE IDLE SPEED TOO HIGH
DescriptionINFOID:0000000001162707
CHART 5: ENGINE IDLE SPEED TOO HIGH
Diagnosis ProcedureINFOID:0000000001162708
1.CHECK ECM POWER SUPPLY AND GROUND CIRCUIT
Check ECM power supply and ground circuit. Refer to EC-1106, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace harness or connector.
2.CHECK WIRING HARNESS
Visually check the condition of the engine wiring harness.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace harness or connector.
3.CHECK ACCELERATOR PEDAL POSITION SENSOR
Check the accelerator pedal position sensor. Refer to EC-1193, "
Component Inspection".
Is the inspection result normal?
YES >>INSPECTION END
NO >> Repair or replace.