Trouble Diagnosis Procedure
NATS(NISSAN ANTI-THEFT SYSTEM)
Trouble Diagnosis Procedure
PRELIMINARY CHECK
1.GET SYMPTOMS
Listen to customer complaints request. (Get symptoms)
NOTE:
If customer reports a "No start" condition, request all Intelligent Keys to be brought to the dealer in case of
Intelligent Key system malfunction.
Intelligent Key or mechanical key service request- For further information, refer to CONSULT-III operation manual.
Malfunctions-GO TO 2.
2.START ENGINE WITH INTELLIGENT KEY (WITH INTELLIGENT KEY)
Check if the engine could be started by all registered Intelligent Keys.
The engine cannot be started by some Intelligent Keys-Intelligent Key is low battery or malfunction. Intelligent Key Battery Replacement.
The engine cannot be started by all Intelligent Keys-GO TO 3.
The engine can be started by all Intelligent Keys-GO TO 4.
3.CHECK "KEY" WARNING LAMP ILLUMINATION
When pushing the ignition switch, check if "KEY" warning lamp in combination meter illuminates.
KEY warning lamp illuminates green-GO TO "KEY" Warning Lamp (GREEN) Check.
KEY warning lamp illuminates red-GO TO "KEY" Warning Lamp (RED) Check.
Does not illuminate-GO TO Intelligent Key System.
4.START ENGINE WITH MECHANICAL KEY
Check if the engine could be started by all registered mechanical keys.
The engine can not be started by some mechanical keys-Register mechanical key. Refer to CONSULT-III operation manual.
The engine cannot be started by all mechanical keys- "WORK FLOW".
The engine can be started by all mechanical keys-GO TO 5.
5.PERFORM SELF-DIAGNOSIS
1. Turn ignition switch to ON by carrying the Intelligent Key.
2. Perform self-diagnosis of Intelligent Key system with CONSULT-III.
Malfunction is detected-GO TO CONSULT-III Application Item.
No malfunction is detected-GO TO Trouble Diagnosis Procedure.
WORK FLOW
1.STARTING ENGINE
Check if the engine could be started by inserting the mechanical key into the ignition key cylinder and operate ignition switch.
OK - System is normal.
NG - GO TO 2.
2.PERFORM SELF DIAGNOSIS
Perform SELF-DIAGNOSIS "NATS V5.0" using CONSULT-III.
NOTE:
NATS program card is necessary to display the "SELF-DIAGNOSIS".
No malfunction is detected-Recheck the starting engine section GO TO 1.
Malfunction related to NATS is detected-GO TO 3.
Malfunctions related to "DON'T ERASE BEFORE CHECKING ENG DIAG" and NATS are detected-GO
TO 7.
3.IDENTIFYING NATS MALFUNCTION
Self-diagnosis results referring to NATS, but no information about engine self-diagnosis result is displayed on
CONSULT-III. Trouble Diagnosis.
- GO TO 4.
4.NATS TROUBLE DIAGNOSIS
Repair NATS (if necessary, perform "C/U INITIALIZATION" with CONSULT-III.)
- GO TO 5.
5.ERASE SELF-DIAGNOSIS
Erase the record of "SELF-DIAGNOSIS" by using CONSULT-III.
- GO TO 6.
6.STARTING ENGINE
Check if the engine could be started by inserting the mechanical key into the ignition key cylinder and operate ignition switch.
NG - GO TO 2.
OK - End of inspection.
7.IDENTIFYING NATS AND ENGINE CONTROL MALFUNCTION
NATS malfunction and "DON'T ERASE BEFORE CHECKING ENG DIAG" are displayed on the CONSULT-III screen.
NOTE:
This indication means that malfunction have been detected in NATS and engine control system.
- GO TO 8.
8.NATS TROUBLE DIAGNOSIS
Repair NATS according to self-diagnosis results refer to NATS (if necessary, perform "C/U INITIALIZATION" with CONSULT-III.)
NOTE:
Do not erase "SELF-DIAGNOSIS" by using CONSULT-III.
- GO TO 9.
9.IDENTIFYING ENGINE CONTROL MALFUNCTION
Check engine "SELF-DIAGNOSIS" records with a generalized program card instead of the NATS program card.
- GO TO 10.
10.ENGINE CONTROL SYSTEM TROUBLE DIAGNOSIS
Repair engine control system if engine related malfunction is detected.
With engine diagnostic codes present, Testing and Inspection.
Without engine diagnostic codes present, .
NOTE:
If only "NATS MALFUNCTION" is displayed, erase the self-diagnosis results.
- GO TO 11.
11.STARTING ENGINE
Check if the engine could be started by inserting the mechanical key into the ignition key cylinder and operate ignition switch.
OK - GO TO 12.
NG - GO TO 2.
12.ERASE SELF-DIAGNOSIS
Erase both NATS and ENGINE "SELF-DIAGNOSIS" records by using CONSULT-III NATS program card and generalized program card.
- GO TO 13
13.CONFIRMATION
Perform running test with CONSULT-III in engine "SELF-DIAGNOSIS" mode.
"NO DTC" is displayed- End of inspection.
Malfunction information is displayed-GO TO 2.