Scheme 1
Vehicle Security Operation Check
- INSPECTION START Turn ignition switch "OFF" and remove Intelligent Key from key slot. NOTE: Before starting operation check, open front windows. GO TO 2
- CHECK SECURITY INDICATOR LAMP Lock doors using Intelligent Key or mechanical key. Check that security indicator lamp illuminates for 30 seconds. Does security indicator lamp illuminate? YES >> GO TO 3 NO >> Perform diagnosis and repair. Refer to " «COMPONENT FUNCTION CHECK»(ref-388060-S36748630362011022800000) ".
- CHECK ALARM FUNCTION After 30 seconds, security indicator lamp will start to blink. Open any door before unlocking with Intelligent Key or mechanical key, or open trunk lid without Intelligent Key or mechanical key. Does alarm function properly? YES >> GO TO 4 NO >> Check the following. The vehicle security system does not phase in alarm mode. Refer to " «SYMPTOM TABLE»(ref-388060-S13561650712011022800000) ". Alarm (horn, headlamp and hazard lamp) do not operate. Refer to " «SYMPTOM TABLE»(ref-388060-S13561650712011022800000) ".
- CHECK ALARM CANCEL OPERATION Unlock any door or open trunk lid using Intelligent Key or mechanical key. Does alarm (horn, headlamp and hazard lamp) stop? YES >> Inspection End. NO >> Check door lock function. Refer to " «SYSTEM DESCRIPTION»(ref-388060-S00938644622011022800000) ".
ECM RE-COMMUNICATING FUNCTION : Description
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 Operation 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.
SYSTEM DESCRIPTION
- The engine start function of Intelligent Key system is a system that makes it possible to start and stop the engine without removing the key. It verifies the electronic ID using two-way communications when pressing the push-button ignition switch while carrying the Intelligent Key, which operates based on the results of electronic ID verification for Intelligent Key using two-way communications between the Intelligent Key and the vehicle. NOTE: The driver should carry the Intelligent Key at all times.
- Intelligent Key has 2 IDs [for Intelligent Key and for NVIS (NATS)]. It can perform the door lock/unlock operation and the push-button ignition switch operation when the registered Intelligent Key is carried.
- When the Intelligent Key battery is discharged, it can be used as emergency back-up by inserting the Intelligent Key to the key slot. At that time, perform the NVIS (NATS) ID verification. If it is used when the Intelligent Key is carried, perform the Intelligent Key ID verification.
- When the push-button ignition switch is pressed the ID will be verified. If the ID is successfully verified, starting the engine will be possible.
- If the door lock/unlock operation is performed when the Intelligent Key battery is discharged, all doors lock/unlock can be performed by operating the driver door key cylinder using the mechanical key set in the Intelligent Key.
- Intelligent Key system can register up to 4 keys (Including the standard Intelligent Key) on request from the owner. NOTE: Refer to " «INTELLIGENT KEY : SYSTEM DESCRIPTION»(ref-388085-S02247791022011022800000) " for any functions other than engine start function of Intelligent Key system.
OPERATION WHEN INTELLIGENT KEY IS CARRIED
- When the push-button ignition switch is pressed and brake pedal is depressed, the BCM signals the inside key antenna and transmits the request signal to the Intelligent Key.
- The Intelligent Key sends the request signal and transmits the Intelligent Key ID signal to the BCM via the remote keyless entry receiver.
- The BCM receives the Intelligent Key ID signal and verifies it with the registered ID.
- BCM turns ACC relay ON and transmits the ignition power supply ON signal to IPDM E/R.
- IPDM E/R turns the ignition relay ON and starts the ignition power supply.
- BCM confirms that the shift position is P or N.
- BCM transmits the starter request signal via CAN communication to IPDM E/R and turns the starter relay in IPDM E/R ON if BCM judges that the engine start condition is satisfied.
- IPDM E/R turns the starter control relay ON when receiving the starter request signal.
- Battery power is supplied through the starter relay and the starter control relay to operate the starter motor and to start the cranking. CAUTION: If a malfunction is detected in the Intelligent Key system, the "KEY" warning lamp in the combination meter illuminates. At that time, the engine cannot be started.
- When BCM received feedback signal from ECM acknowledging the engine has been initiated, the BCM transmits a stop signal to IPDM E/R and stops the cranking by turning OFF the starter motor relay. (If the engine initiating has failed, the cranking will stop automatically within 5 seconds.) CAUTION: When the Intelligent Key is carried outside of the vehicle (inside key antenna detection area) with the power supply in ACC or ON position, even if the engine start condition* is satisfied, the engine cannot be started. *: For the engine start condition, refer to " «PUSH-BUTTON IGNITION SWITCH OPERATION PROCEDURE»(ref-388060-S21950238832011022800000) ".
OPERATION RANGE
Engine can be started when Intelligent Key is inside the vehicle. However, sometimes engine might not start when Intelligent Key is on instrument panel or in glove box.
OPERATION WHEN KEY SLOT IS USED
When the Intelligent Key battery is discharged, it performs the NVIS (NATS) ID verification between the integrated transponder and BCM by inserting the Intelligent Key into the key slot, and then the engine can be started.
For details relating to starting the engine using key slot, refer to " SYSTEM DESCRIPTION ".
The power supply position changing operation can be performed with the following operations
Note. When an Intelligent Key is within the detection area of inside key antenna or when it is inserted to the key slot, it is equivalent to the operations below. When starting the engine, the BCM monitors under the engine start conditions. Brake pedal operating condition CVT selector lever position Vehicle speed Engine status Unless each start condition is fulfilled, the engine will not respond regardless of how many times the engine switch is pressed. At that time, illumination repeats the position in the order of LOCK-->ACC-->ON-->OFF.
| Power supply position | Engine start/stop condition | Push-button ignition switch operation frequency | |
|---|---|---|---|
| Brake pedal | CVT selector lever position | ||
| LOCK --> ACC | Not depressed | Any position | 1 |
| LOCK --> ACC --> ON | Not depressed | Any position | 2 |
| LOCK --> ACC --> ON --> OFF | Not depressed | Any position | 3 |
| LOCK --> START ACC --> START ON --> START (Engine start) | Depressed | P or N position ( (1) ) | 1 [If the switch is pressed once, the engine starts from any power supply position (LOCK, ACC, and ON)] |
| Engine is running --> OFF (Engine stop) | Any position Vehicle speed < 4 km/h (2 MPH) | 1 | |
| Engine is running --> ACC (Engine stop) | Any position other than P ( (2) ) | 1 | |
| Engine stall return operation while driving | P position | 1 | |
| (1) When the CVT selector lever position is N position, the engine start condition is different according to the vehicle speed. At vehicle speed of 4 km/h (2 MPH) or less, the engine can start only when the brake pedal is depressed. At vehicle speed of 4 km/h (2 MPH) or more, the engine can start even if the brake pedal is not depressed. (It is the same as "Engine stall return operation while driving".) (2) When the CVT selector lever position is in any position other than P position and when the vehicle speed is 5 km/h (3 MPH) or more, the engine stop condition is different. Press and hold the push-button ignition switch for 2 seconds or more. (When the push-button ignition switch is pressed for too short a time, the operation may be invalid, so properly press and hold to prevent an incorrect operation.) Press the push-button ignition switch 3 times or more within 1.5 seconds. (Emergency stop operation) | |||
| (1) | When the CVT selector lever position is N position, the engine start condition is different according to the vehicle speed. |
| (2) | When the CVT selector lever position is in any position other than P position and when the vehicle speed is 5 km/h (3 MPH) or more, the engine stop condition is different. |
SYSTEM DESCRIPTION CHART
Scheme 2
Component Description
| Component | Reference |
|---|---|
| BCM | P1610 LOCK MODE |
| Push-button ignition switch | B2556 PUSH-BUTTON IGNITION SWITCH |
| Door switch | DOOR SWITCH |
| CVT shift selector | B2601 SHIFT POSITION |
| Inside key antenna | B2622 INSIDE KEY ANTENNA 2 |
| Remote keyless entry receiver | REMOTE KEYLESS ENTRY RECEIVER |
| Stop lamp switch | B2555 STOP LAMP |
| Starter relay | B210D STARTER RELAY |
| Starter control relay | B210B STARTER CONTROL RELAY |
| Security indicator | VEHICLE SECURITY INDICATOR |
| Key warning lamp | WARNING LAMP |
COMPONENT DESCRIPTION CHART
Scheme 3
- The NVIS (NATS) is an anti-theft system. By registering an Intelligent Key ID into the vehicle, it prevents the engine being started by an unregistered Intelligent Key. It has a higher protection against auto thefts than duplicate mechanical keys.
- It performs the ID verification when starting the engine in the same way as the Intelligent Key system. But, it performs the NVIS (NATS) ID verification when inserting the Intelligent Key and performs the Intelligent Key ID verification when carrying the Intelligent Key.
- The Intelligent Key system of Maxima is not the same as the conventional models. The mechanical key integrated in the Intelligent Key cannot start the engine. When the Intelligent Key battery is discharged, the NVIS (NATS) ID verification memorized to the transponder integrated with Intelligent Key is performed by inserting the Intelligent Key into the key slot. If the verification results are OK, the engine start operation can be performed by the push-button ignition switch operation.
- Locate the security indicator and apply the anti-theft system equipment sticker, forewarning that the NVIS (NATS) is onboard with the model.
- The security indicator always blinks when the Intelligent Key is removed from the key slot and when the power supply position is in LOCK position.
- Intelligent Key can be registered up to 4 keys (Including the standard ignition key) on request from the owner.
- The specified registration is required when replacing ECM, BCM or Intelligent Key. For registration procedure for NVIS (NATS) and registration procedure for Intelligent Key when installing the BCM, refer to CONSULT-III Operation Manual .
- Possible symptom of NVIS (NATS) malfunction is "Engine cannot start". In Maxima, the engine can be started with the Intelligent Key system and NVIS (NATS). Identify the possible causes according to "Work Flow". Refer to " «WORK FLOW»(ref-388060-S06097834062011022800000) ".
- If ECM other than Genuine NISSAN is installed, the engine cannot be started. For ECM replacement procedure, refer to " «ECM RE-COMMUNICATING FUNCTION : SPECIAL REPAIR REQUIREMENT»(ref-388060-S18346226792011022800000) ".
| Component | Reference |
|---|---|
| BCM | IMMU |
| Push-button ignition switch | CONSULT - III FUNCTION (IPDM E/R) |
| Door switch | DOOR SWITCH |
| CVT shift selector | B2601 SHIFT POSITION |
| Inside key antenna | B2622 INSIDE KEY ANTENNA 2 |
| Remote keyless entry receiver | REMOTE KEYLESS ENTRY RECEIVER |
| Stop lamp switch | B2555 STOP LAMP |
| Transmission range switch | B2604 TRANSMISSION RANGE SWITCH |
| Starter relay | B2608 STARTER RELAY |
| Starter control relay | B2560 STARTER CONTROL RELAY |
| Security indicator | VEHICLE SECURITY INDICATOR |
| Key warning lamp | WARNING LAMP |
COMPONENT DESCRIPTION CHART
Scheme 4
CANCELING THE ALARM OPERATION OF THE VEHICLE SECURITY SYSTEM
When unlocking the door with the key or Intelligent Key, the alarm operation is canceled.
ACTIVATING THE ALARM OPERATION OF THE VEHICLE SECURITY SYSTEM
Check that the system is in the armed phase. (The security indicator lamp blinks every 2.4 seconds.)
When the following operation 1 or 2 is performed, the system sounds the horns and flashes the headlamps for about 50 seconds.
- Trunk or any door is opened during armed phase.
- Disconnecting and connecting the battery connector before canceling armed phase.
PANIC ALARM OPERATION
Intelligent Key system will not operate horn and headlamps if the ignition switch is in the ACC or ON position. When the Intelligent Key system is triggered, ground is supplied intermittently to both headlamp relay and horn relay.
When headlamp relay and horn relay are energized, then power is supplied to headlamps (LH and RH) and horns (HIGH and LOW).
The headlamp flashes and the horn sounds intermittently.
The alarm automatically turns off after 50 seconds or when BCM receives any signal from Intelligent Key.
Scheme 5
| Component | Reference |
|---|---|
| BCM | VEHICLE SECURITY SYSTEM |
| Horn relay | HORN |
| Security indicator | VEHICLE SECURITY INDICATOR |
| Door switch | DOOR SWITCH |
| Door lock actuator | DOOR LOCK ACTUATOR |
| Trunk lid lock assembly | TRUNK RELEASE SOLENOID |
| Door key cylinder switch | KEY CYLINDER SWITCH |
| Door lock and unlock switch | DOOR LOCK AND UNLOCK SWITCH |
COMPONENT DESCRIPTION CHART
Description
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Modern vehicle is equipped with many electronic control unit, 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 Signal Chart, refer to " CAN COMMUNICATION SIGNAL CHART ".
Performs ID verification through BCM and Intelligent Key when push-button ignition switch is pressed. Prohibits the start of engine when an unregistered ID of Intelligent Key is used.
BCM performs the ID verification with ECM that allows the engine to start. Start the engine if the ID is OK. ECM prevents the engine from starting if the ID is not registered. BCM starts the communication with ECM if ignition switch is turned ON.
BCM performs the ID verification with ECM that allows the engine to start. Start the engine if the ID is OK. ECM prevents the engine from starting if the ID is not registered. BCM starts the communication with ECM if ignition switch is turned ON.
Performs ID verification through BCM and Intelligent Key when push-button ignition switch is pressed. Prohibits the start of engine when an unregistered ID of Intelligent Key is used.
Performs ID verification through BCM and Intelligent Key when push-button ignition switch is pressed. Prohibits the start of engine when an unregistered ID of Intelligent Key is used.
Performs ID verification through BCM and Intelligent Key when push-button ignition switch is pressed. Prohibits the start of engine when an unregistered ID of Intelligent Key is used.
BCM performs the ID verification with ECM that allows the engine to start. Start the engine if the ID is OK. ECM prevents the engine from starting if the ID is not registered. BCM starts the communication with ECM if ignition switch is turned ON.
BCM performs the ID verification with ECM that allows the engine to start. Start the engine if the ID is OK. ECM prevents the engine from starting if the ID is not registered. BCM starts the communication with ECM if ignition switch is turned ON.
BCM detects the stop lamp status and confirms the stop lamp switch ON/OFF status. BCM confirms the engine start condition according to the stop lamp switch ON/OFF status.
The switch that changes the power supply position. BCM maintains the power supply position status. BCM changes the power supply position with the operation of the push-button ignition switch.
BCM receives the 2 vehicle speed signals via CAN communication. One signal is transmitted by the "combination meter". Another signal is transmitted by "ABS actuator and electric unit (control unit)". BCM compares both signals to detect the vehicle speed.
Starter control relay, integrated in IPDM E/R, permits the starter relay operation when in N or P position. It is installed in parallel with the starter relay.
BCM confirms the shift position with the following 2 signals.
- CVT selector lever
- P position signal from IPDM E/R (CAN)
BCM confirms the shift position with the following 2 signals.
- CVT selector lever
- Speed signal from meter
BCM confirms the shift position with the following 2 signals.
- CVT selector lever
- P/N position switch
BCM confirms the shift position with the following 4 signals.
- CVT selector lever
- Transmission range switch
- P position signal from IPDM E/R (CAN)
- P position signal from TCM (CAN)
BCM confirms the shift position with the following 4 signals.
- CVT selector lever
- Transmission range switch
- P position signal from IPDM E/R (CAN)
- P position signal from TCM (CAN)
Located in IPDM E/R, it runs the starter motor. The starter relay is turned ON by the BCM when the ignition switch is in START position. IPDM E/R transmits the starter relay ON signal to BCM via CAN communication.
BCM receives the engine status signal from ECM via CAN communication.
BCM receives the engine status signal from ECM via CAN communication.
Located in IPDM E/R, it runs the starter motor. The starter relay is turned ON by the BCM when the ignition switch is in START position. IPDM E/R transmits the starter relay ON signal to BCM via CAN communication.
Starter control relay, integrated in IPDM E/R, permits the starter relay operation when in N or P position. It is installed in parallel with the starter relay.
Starter control relay, integrated in IPDM E/R, permits the starter relay operation when in N or P position. It is installed in parallel with the starter relay.
Located in IPDM E/R, it runs the starter motor. The starter relay is turned ON by the BCM when the ignition switch is in START position. IPDM E/R transmits the starter relay ON signal to BCM via CAN communication.
Located in IPDM E/R, it runs the starter motor. The starter relay is turned ON by the BCM when the ignition switch is in START position. IPDM E/R transmits the starter relay ON signal to BCM via CAN communication.
IPDM E/R confirms the shift position with the following signals.
- Transmission range switch
- Shift position signal from BCM (CAN)
IPDM E/R confirms the shift position with the following signals.
- Transmission range switch
- Shift position signal from BCM (CAN)
Blinks when Intelligent Key insertion is required.
The main power window and door lock/unlock switch detects condition of the door key cylinder switch and transmits to BCM as the LOCK or UNLOCK signal.
Horn (high/low) is located inside of front bumper and operates when theft warning system is in alarm phase.
Headlamp lighting when theft warning system is in alarm phase.
- Warning lamp is built in combination meter.
- Intelligent Key system malfunction is reported to the driver by the warning lamp illumination.
- Vehicle security indicator is built in combination meter.
- NVIS (Nissan Vehicle Immobilizer System-NATS) and vehicle security system conditions are indicated by blink or illumination of vehicle security indicator.