Diagnostic Procedure 5

WARNING: This page is about a different car, the 2005 Nissan Quest. 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.

Fig 1: CONSULT-II Data Display CHAIN OF IMMU-KEY
Courtesy of NISSAN MOTOR CO., U.S.A.

Is CONSULT-II screen displayed as shown?
- Yes: GO TO 2.
- No: GO TO "SYMPTOM MATRIX CHART 1 ".
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 ON.
2. Check voltage between NATS antenna amp. connector M21 terminal 1 and ground.
  
  Fig 2: Checking Voltage Between NATS Antenna Ampere Connector M21 Terminal 1 & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  - 1 (Y/R) - Ground: Battery voltage
OK or NG
- OK: GO TO 5.
- NG: Repair or replace harness.
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 Ampere Connector M21 Terminal 2 & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
- Before inserting key into ignition key cylinder
- Voltage: Battery voltage
- After inserting key into ignition key cylinder
2 (O) - Ground:
- Pointer of tester should move for 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.
    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.
- Before inserting key into ignition key cylinder
- Voltage: Battery voltage
- After inserting key into ignition key cylinder
4 (BR) - Ground:
- Pointer of tester should move for 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.
    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.
  
  Fig 5: Checking Continuity Between NATS Antenna Ampere Connector M21 Terminal 3 & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  - 3 (B) - Ground: Continuity should exist.
OK or NG
- OK:
  - NATS antenna amp. is malfunctioning.
    - Ref. part No. E6
- NG:
  - Repair or replace harness.
    NOTE: If harness is OK, replace BCM, perform initialization with CONSULT-II. For initialization, refer to "CONSULT-II Operation Manual NATS-IVIS/NVIS".