Symptom Table

The engine start function, door lock function, power distribution system and NATS-IVIS/NMS in the Intelligent Key system are closely related to each other regarding control. Narrow down the functional area in question by performing following table to identify which function is malfunctioning. The vehicle security function can operate only when the door lock and power distribution system are operating normally. Therefore, it is easy to identify any factor unique to the vehicle security system by performing following table.

Use the chart below to help you find the cause of the symptom. The numbers indicate the order of the inspection.

NOTE: Before starting vehicle security system operation check, the following condition are met.

Open front windows
Turn ignition switch OFF
Pull out Intelligent Key from key slot.

ITEM SYMPTOM CHART

NO.	Function	Operation condition	Symptom	Diagnostic Item	Reference
1	INTELLIGENT KEY SYSTEM/DOOR LOCK FUNCTION	Lock/unlock door with door request switch. (Intelligent Key is into the outside key antenna detection area)	Door does not lock/unlock	-	SYMPTOM DIAGNOSIS
2	POWER DISTRIBUTION FUNCTION	Press push-button ignition switch under the following condition. A/T models A/T selector lever position is in P or N position Do not depress brake pedal M/T models Do not depress clutch pedal	Push-button ignition switch is not operated	-	PUSH-BUTTON IGNITION SWITCH DOES NOT OPERATE
3	INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION	Start engine with Intelligent Key into the vehicle (inside key antenna detection area)	Engine can not start with Intelligent Key	-	ENGINE DOES NOT START WITH INTELLIGENT KEY
4	INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION	Open the door after ignition switch turn NO to OFF.	Steering is not locked	-	STEERING DOES NOT LOCK
5	INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS FUNCTION	Start engine with Intelligent Key into the key slot.	Engine can not start (Intelligent Key into the key slot)	-	ENGINE DOES NOT START WHEN INTELLIGENT KEY IS INSERTED INTO KEY SLOT
6	INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS FUNCTION	Insert Intelligent Key into the keyslot.	Keyslot indicator is not illuminate	-	KEY SLOT INDICATOR DOES NOT ILLUMINATE
7	VEHICLE SECURITY SYSTEM	Lock all doors with Intelligent Key or door request switch	Vehicle security system can not be set	-	VEHICLE SECURITY SYSTEM CAN NOT BE SET
		Lock all doors with Intelligent Key or door request switch	Security indicator does not turn ON	-	SECURITY INDICATOR DOES NOT TURN ON
		In the armed phase, open the door	Vehicle security alarm does not activate	Horn	VEHICLE SECURITY ALARM DOES NOT ACTIVATE
		In the armed phase, open the door	Vehicle security alarm does not activate	Head lamp	VEHICLE SECURITY ALARM DOES NOT ACTIVATE
		When alarm sound, press Intelligent Key button	Vehicle security system can not be canceled	-	VEHICLE SECURITY SYSTEM CAN NOT CANCELED
		When alarm sound, press door request switch	Vehicle security system can not be canceled	-	VEHICLE SECURITY SYSTEM CAN NOT CANCELED
8	POWER DISTRIBUTION FUNCTION	Press push-button ignition switch under the following condition. A/T models A/T selector lever position is in P or N position Do not depress brake pedal M/T models Do not depress clutch pedal	Push-button ignition switch position indicator does not turn on	-	PUSH-BUTTON IGNITION SWITCH POSITION INDICATOR