2007 NISSAN TIIDA ECM Re-communicating Function

INSPECTION AND ADJUSTMENT
SEC-7
< BASIC INSPECTION >[WITH INTELLIGENT KEY SYSTEM]
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INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement
INFOID:0000000001404031
Refer to the CONSULT-III Operation Manual-NATS.
ECM RE-COMMUNICATING FUNCTION
ECM RE-COMMUNICATING FUNCTION : DescriptionINFOID:0000000001404032
Performing following procedure can automatically perform re-communication of ECM and BCM, but only when
the ECM has been replaced with a new one (*1).
*1: New one means an ECM which has never been energized on-board.
(In this step, initialization procedure by CONSULT-III is not necessary)
NOTE:
When registering new Key IDs or replacing the ECM that is not brand new, refer to CONSULT-III Oper-
ation Manual.
If multiple keys are attached to the key holder, separate them before work.
Distinguish keys with unregistered key ID from those with registered ID.
ECM RE-COMMUNICATING FUNCTION : Special Repair RequirementINFOID:0000000001404033
1.PERFORM ECM RE-COMMUNICATING FUNCTION
1. Install ECM.
2. Using a registered key (*2), turn ignition switch to “ON”.
*2: To perform this step, use the key that has been used before performing ECM replacement.
3. Maintain ignition switch in “ON” position for at least 5 seconds.
4. Turn ignition switch to “OFF”.
5. Start engine.
Can engine be started?
YES >> Procedure is completed.
NO >> Initialize control unit. Refer to CONSULT-III Operation Manual NATS.

NATS (NISSAN ANTI-THEFT SYSTEM)
SEC-13
< FUNCTION DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
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- Mechanical key
- ABS actuator control unit
- EPS control unit
- IPDM E/R
 NATS trouble diagnosis, system initialization and additional registration of other mechanical key IDs must be
carried out using CONSULT-III hardware and SECURITY CARD.
When NATS initialization has been completed, the ID of the inserted mechanical key or mechanical key IDs
can be carried out.
 Possible symptom of NATS malfunction is “Engine cannot start”. In C11, the engine can be started with the
Intelligent Key system and NATS. Identify the possible causes according to “Work Flow”, Refer to SEC-4,
"Work Flow".
 If ECM other than Genuine NISSAN is installed, the engine cannot be started. For ECM replacement proce-
dure, refer to SEC-7, "
ECM RE-COMMUNICATING FUNCTION : Description".
PRECAUTIONS FOR KEY REGISTRATION
 The key registration is a procedure that erases the current NATS ID once, and then re-registers a new ID.
Therefore the registered Intelligent Key is necessary for this procedure. Before starting the registration oper-
ation collect all registered Intelligent Keys from the customer.
 The NATS ID registration is the procedure that registers the ID stored into the transponder (integrated in
mechanical key) to BCM.
The Intelligent Key ID registration is the procedure that registers the ID to Intelligent Key unit.
 When performing the Intelligent Key system registration only, the engine cannot be started by inserting the
key into the key cylinder. When performing the NATS registration only, the engine cannot be started by using
the mechanical key.
SECURITY INDICATOR
 Always flashes with ignition knob released (ignition knob switch: OFF) condition on ignition knob LOCK posi-
tion.
 Always flashes with ignition knob released (ignition knob switch: OFF) condition on mechanical key removed
position.
 Turns ON steady when the NATS is activated.
MAINTENANCE INFORMATION
CAUTION:
It is necessary to perform NATS ID registration when replacing any of the following part.
If it's not (or fail to do so), the electrical system may not operate properly.
 BCM
ECM
 Intelligent Key unit
 Intelligent Key
 IPDM E/R
 NATS antenna amp.

SEC-32
< COMPONENT DIAGNOSIS >[WITH INTELLIGENT KEY SYSTEM]
B2193, P1612 CHAIN OF ECM-IMMU
B2193, P1612 CHAIN OF ECM-IMMU
DescriptionINFOID:0000000001404069
BCM performs the ID verification with ECM that allows the engine to start. BCM starts the communication with
ECM if ignition switch is turned ON and starts the engine if the ID is OK. ECM prevents the engine from start-
ing if the ID is not registered.
DTC LogicINFOID:0000000001404070
DTC DETECTION LOGIC
NOTE:
 If DTC B2193 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
SEC-21, "
DTC Logic".
 If DTC B2193 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
SEC-22, "
DTC Logic".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES >> Refer to SEC-32, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000001404071
1.REPLACE BCM
1. Replace BCM. Refer to XX-XX, "*****"
.
2. Perform initialization with CONSULT-III.
For initialization, refer to CONSULT-III Operation Manual.
Does the engine start?
YES >> BCM was malfunctioning.
NO >> ECM is malfunctioning.
 Replace ECM.
 Perform ECM re-communicating function.
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
B2193
CHAIN OF BCM-
ECMInactive communication between ECM and BCM Harness or connectors
(The CAN communication line is
open or short)
BCM
ECM P1612

INSPECTION AND ADJUSTMENT
SEC-83
< BASIC INSPECTION >[WITHOUT INTELLIGENT KEY SYSTEM]
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INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement
INFOID:0000000001404154
Refer to the CONSULT-III Operation Manual-NATS.
ECM RE-COMMUNICATING FUNCTION
ECM RE-COMMUNICATING FUNCTION : DescriptionINFOID:0000000001404155
Performing following procedure can automatically perform re-communication of ECM and BCM, but only when
the ECM has been replaced with a new one (*1).
*1: New one means an ECM which has never been energized on-board.
(In this step, initialization procedure by CONSULT-III is not necessary)
NOTE:
When registering new Key IDs or replacing the ECM that is not brand new, refer to CONSULT-III Oper-
ation Manual.
If multiple keys are attached to the key holder, separate them before work.
Distinguish keys with unregistered key ID from those with registered ID.
ECM RE-COMMUNICATING FUNCTION : Special Repair RequirementINFOID:0000000001404156
1.PERFORM ECM RE-COMMUNICATING FUNCTION
1. Install ECM.
2. Using a registered key (*2), turn ignition switch to “ON”.
*2: To perform this step, use the key that has been used before performing ECM replacement.
3. Maintain ignition switch in “ON” position for at least 5 seconds.
4. Turn ignition switch to “OFF”.
5. Start engine.
Can engine be started?
YES >> Procedure is completed.
NO >> Initialize control unit. Refer to CONSULT-III Operation Manual NATS.

NATS (NISSAN ANTI-THEFT SYSTEM)
SEC-85
< FUNCTION DIAGNOSIS >[WITHOUT INTELLIGENT KEY SYSTEM]
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 Possible symptom of NATS malfunction is “Engine cannot start” In J10, the engine can be started with the
NATS. Identify the possible causes according to “Work Flow”. Refer to SEC-80, "
Work Flow".
 If ECM other than Genuine NISSAN is installed, the engine cannot be started. For ECM replacement proce-
dure, refer to SEC-83, "
ECM RE-COMMUNICATING FUNCTION : Description".
PRECAUTIONS FOR KEY REGISTRATION
 The key registration is a procedure that erases the current NATS ID once, and then re-registers a new ID.
Therefore the registered ignition key is necessary for this procedure. Before starting the registration opera-
tion collect all registered ignition keys from the customer
 The NATS ID registration is the procedure that registers the ID stored into the transponder (integrated in
ignition key) to BCM.
SECURITY INDICATOR
 Security indicator blinks when the ignition switch is in “OFF” or “ACC” position.
 When NATS detects trouble, the security indicator lamp lights up while ignition key is in the “ON” position.
MAINTENANCE INFORMATION
CAUTION:
If necessary to perform NATS ID registration when replacing any of the following part.
If it's not (or fail to do so), the electrical system may not operate properly.
 BCM
ECM
 IPDM E/R
 Ignition key
 NATS antenna amp.
Component Parts LocationINFOID:0000000001404159
1. BCM M18, M20
(view with glove box removed)2. NATS antenna amp. M21 3. Security indicator lamp M31
4. ECM E16
ALKIA0849ZZ

B2193, P1612 CHAIN OF ECM-IMMU
SEC-97
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B2193, P1612 CHAIN OF ECM-IMMU
DescriptionINFOID:0000000001404183
BCM performs the ID verification with ECM that allows the engine to start. BCM starts the communication with
ECM if ignition switch is turned ON and starts the engine if the ID is OK. ECM prevents the engine from start-
ing if the ID is not registered.
DTC LogicINFOID:0000000001404184
DTC DETECTION LOGIC
NOTE:
 If DTC B2193 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to XX-
XX, "*****".
 If DTC B2193 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to XX-
XX, "*****".
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES >> Refer to SEC-97, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000001404185
1.REPLACE BCM
1. Replace BCM. Refer to XX-XX, "*****"
.
2. Perform initialization with CONSULT-III.
For initialization, refer to CONSULT-III Operation Manual.
Does the engine start?
YES >> BCM was malfunctioning.
NO >> ECM is malfunctioning.
 Replace ECM.
 Perform ECM re-communicating function.
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
B2193
CHAIN OF BCM-
ECMInactive communication between ECM and BCM Harness or connectors
(The CAN communication line is
open or short)
BCM
ECM P1612