Diagnostic Procedure 5

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

Self-diagnostic results:

"CHAIN OF IMMU-KEY" displayed on CONSULT-II screen

CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS "CHAIN OF IMMU-KEY" displayed on CONSULT-II screen.

Is CONSULT-II screen displayed as above?

Yes: GO TO 2.

No: GO TO "SYMPTOM MATRIX CHART 1 ".

Fig 1: Identifying CONSULT-II Display - SELF-DIAGNOSIS
CHECK NATS ANTENNA AMP. INSTALLATION
Check NATS antenna amp. installation. Refer to "HOW TO REPLACE NATS ANTENNA AMP. ".

OK or NG

OK: GO TO 3.

NG: Reinstall NATS antenna amp. correctly.
CHECK NVIS (NATS) IGNITION KEY ID CHIP
Start engine with another registered NATS ignition key.

Does the engine start?

Yes: Ignition key ID chip is malfunctioning.
- Replace the ignition key.
  Ref. part No. E5
- Perform initialization with CONSULT-II.
  For initialization, refer to CONSULT-II Operation Manual NATS-IVIS/NVIS. .
No: GO TO 4.
CHECK POWER SUPPLY FOR NATS ANTENNA AMP.
1. Turn ignition switch OFF.
2. Check voltage between NATS antenna amp. connector M21 terminal 1 and ground.
  1 - Ground : Battery voltage
OK or NG

OK: GO TO 5.

NG: Repair or replace fuse or harness. Ref. part No. E3

Fig 2: Checking Voltage Between NATS Antenna Amp. Connector M21 Terminal 1 And Ground

CHECK NATS ANTENNA AMP. SIGNAL LINE-1

Check voltage between NATS antenna amp. connector M21 terminal 2 and ground with analog tester.

Fig 3: Checking Voltage Between NATS Antenna Amp. Connector M21 Terminal 2 And Ground

VOLTAGE CHART

Terminals		Position of ignition key cylinder	Voltage (V) (Approx.)
( + )	( - )	Position of ignition key cylinder	Voltage (V) (Approx.)
2	Ground	Before inserting ignition key	Battery voltage
		After inserting ignition key	Pointer of tester should move for approx. 30 seconds, then return to battery voltage
		Just after turning ignition switch ON	Pointer of tester should move for approx. 1 second, then return to battery voltage

OK or NG

OK: GO TO 6.

NG:

Repair or replace harness. Ref. part No. E1
NOTE: If harness is OK, replace BCM, perform initialization with CONSULT-II. For initialization, refer to CONSULT-II Operation Manual NATS-IVIS/NVIS. .

CHECK NATS ANTENNA AMP. SIGNAL LINE-2

Check voltage between NATS antenna amp. connector M21 terminal 4 and ground with analog tester.

Fig 4: Checking Voltage Between NATS Antenna Amp. Connector M21 Terminal 4 And Ground

VOLTAGE CHART

Terminals		Position of ignition key cylinder	Voltage (V) (Approx.)
( + )	( - )	Position of ignition key cylinder	Voltage (V) (Approx.)
4	Ground	Before inserting ignition key	Battery voltage
		After inserting ignition key	Pointer of tester should move for approx. 30 seconds, then return to battery voltage
		Just after turning ignition switch ON	Pointer of tester should move for approx. 1 second, then return to battery voltage

OK or NG

OK: GO TO 7.

NG:

Repair or replace harness. Ref. part No. E2
NOTE: If harness is OK, replace BCM, perform initialization with CONSULT-II. For initialization, refer to CONSULT-II Operation Manual NATS-IVIS/NVIS. .

CHECK NATS ANTENNA AMP. GROUND LINE CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between NATS antenna amp. connector M21 terminal 3 and ground.
  3 - Ground : Continuity should exist.
OK or NG

OK: NATS antenna amp. is malfunctioning. Ref. part No. E6

NG:
- Repair or replace harness. Ref. part No. E4
  NOTE: If harness is OK, replace BCM, perform initialization with CONSULT-II. For initialization, refer to CONSULT-II Operation Manual NATS-IVIS/NVIS .
  
  Fig 5: Checking Continuity Between NATS Antenna Amp Connector M21 Terminal 3 And Ground