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4. CHECK GROUND CIRCUIT FOR IMMU
1. Turn ignition OFF.
2. Check harness continuity between NATS IMMU harness connector E109 terminal 4 (B) and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness. Ref. part No. C3
5. CHECK COMMUNICATION LINE OPEN CIRCUIT
1. Disconnect ECM connector.
2. Check harness continuity between ECM harness connector M118 terminal 88 (Gasoline engine) or 112
(Diesel engine) and NATS IMMU harness connector E109 terminal 1.
OK or NG
OK >> GO TO 6.
NG >> Repair harness or connector. Ref. part No. C4
6. CHECK COMMUNICATION LINE BATTERY SHORT CIRCUIT
1. Turn ignition ON.
2. Check voltage between ECM terminal 88 (Gasoline engine), 112 (Diesel engine) or NATS IMMU h termi-
nal 1 and ground.
OK or NG
OK >> GO TO 7.
NG >> Check the following.
Communication line is short-circuited with battery
voltage line or ignition switch ON line
Repair harness or connectors Ref. part No. C4 4 (B) – Ground : Continuity should exist.
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88 (SB) – 1 (BR/Y) : Continuity should exist.
112 (SB) – 1 (BR/Y) : Continuity should exist.
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88 (SB) – Ground : Approx. 0V
112 (SB) – Ground : Approx. 0V
1 (BR/Y) – Ground : Approx. 0V
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BL-124
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7. CHECK COMMUNICATION LINE GROUND SHORT CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between ECM terminal 88 (Gasoline engine), 112 (Diesel engine) or NATS IMMU termi-
nal 1 and ground.
OK or NG
OK >> GO TO 8.
NG >> Check the following.
Communication line is short-circuited with ground line
Repair harness or connectors Ref. part No. C4
8. SIGNAL FROM ECM TO IMMU CHECK
1. Connect NATS IMMU connector.
2. Check voltage between NATS IMMU harness connector E109 terminal 3 (B/Y) and ground with analogue
tester.
OK or NG
OK >> NATS IMMU is malfunctioning.
Replace NATS IMMU. Ref. part No. A
Perform initialization with CONSULT-II.
For the operation of initialization, refer to “CONSULT-II Operation Manual NATS”.
NG >> ECM is malfunctioning.
Replace ECM. Ref. part No. B
Perform initialization with CONSULT-II.
For the operation of initialization, refer to “CONSULT-II Operation Manual NATS”. 88 (SB) – Ground : Continuity should exist.
112 (SB) – Ground : Continuity should exist.
1 (BR/Y) – Ground : Continuity should exist.
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3 (B/Y) - Ground:
Before turning ignition switch “ON”
: Voltage: Battery voltage
Just after turning ignition switch “ON”
: Pointer of tester should move.
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Diagnostic Procedure 3EIS008F8
Self-diagnostic results:
“DIFFERENCE OF KEY” displayed on CONSULT-II screen
1. CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS “DIFFERENCE OF KEY”
displayed on CONSULT-II screen.
Is CONSULT-II screen displayed as shown in the figure?
Ye s > > G O T O 2 .
No >> GO TO BL-119, "
SYMPTOM MATRIX CHART 1" .
2. PERFORM INITIALIZATION WITH CONSULT-II
Perform initialization with CONSULT-II. Re-register all NATS ignition key IDs.
For initialization and registration of NATS ignition key IDs, refer to “CONSULT-II operation manual NATS”.
NOTE:
If the initialization is not completed or fails, CONSULT-II shows
above message on the screen.
Can the system be initialized and can the engine be started with re-
registered NATS ignition key?
Yes >> Ignition key ID was unregistered. Ref. part No. D
No >> NATS IMMU is malfunctioning.
Replace IMMU. Ref. part No. A
Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II operation man-
ual NATS”.
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Diagnostic Procedure 4EIS008F9
Self-diagnostic results:
“CHAIN OF IMMU-KEY” displayed on CONSULT-II screen
1. CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS “CHAIN OF IMMU-KEY”
displayed on CONSULT-II screen.
Is CONSULT-II screen displayed as shown in figure?
Yes >> GO TO 2.
No >> GO TO BL-119, "
SYMPTOM MATRIX CHART 1" .
2. CHECK 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. E
Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II Operation Manual NATS”.
No >>
Models without dongle unit
NATS IMMU is malfunctioning.
–Replace NATS IMMU. Ref. part No. A
–For initialization, refer to “CONSULT-II Operation Manual NATS”.
–Perform initialization with CONSULT-II.
Models with dongle unit
GO TO 3.
3. CHECK HARNESS CONNECTOR CONNECTION
Check harness connector connection between E109 and M80.
Does the engine start?
Yes >> System is OK. (The malfunction is caused by improper connector connection.)
No >> GO TO 4.
4. CHECK GROUND CIRCUIT FOR DONGLE UNIT
1. Turn ignition switch OFF.
2. Check continuity between dongle unit harness connector M80 terminal 1 (B) and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness.
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1 (B) – Ground : Continuity should exist.
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5. CHECK INTERFACE CIRCUIT
1. Check continuity between NATS IMMU harness connector E109
terminal 2 (PU) and dongle unit harness connector M80 terminal
7 (PU).
2. Check continuity between NATS IMMU harness connector ter-
minal 2 (PU) and ground.
OK or NG
OK >> Dongle unit is malfunctioning.
1. Replace dongle unit Ref. Part No. G
2. Perform initialization with CONSULT-II. For the initialization procedure, refer to “CONSULT-II
operation manual NATS.
NG >> Repair harness.
Diagnostic Procedure 5EIS008FA
Self-diagnostic results:
“ID DISCORD, IMM-ECM” displayed on CONSULT-II screen
1. CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS “ID DISCORD, IMM-ECM” displayed on CONSULT-II screen.
NOTE:
“ID DISCORD IMMU-ECM”:
Registered ID of IMMU is in discord with that of ECM.
Is CONSULT-II screen displayed as shown in figure?
Ye s > > G O T O 2 .
No >> GO TO BL-119, "
SYMPTOM MATRIX CHART 1" .
2. PERFORM INITIALIZATION WITH CONSULT-II
Perform initialization with CONSULT-II. Re-register all NATS ignition key IDs.
For initialization, refer to “CONSULT-II operation manual NATS”.
NOTE:
If the initialization is not completed or fails, CONSULT-II shows
above message on the screen.
Can the system be initialized?
Ye s > >Start engine. (END)
(System initialization had not been completed. Ref.
part No. B )
No >> ECM is malfunctioning.
Replace ECM. Ref. part No. B
Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II operation manual NATS”. 2 (PU) – 7 (PU) : Continuity should exist.
2 (PU) – Ground : Continuity should not exist.
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![NISSAN X-TRAIL 2003 Service Repair Manual BL-128
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Diagnostic Procedure 6EIS008FB
“SECURITY INDICATOR LAMP DOES NOT LIGHT UP”
1. CHECK FUSE
Check 10A fuse [No. 28, located in the fuse block (J/B)].
Is 10A f NISSAN X-TRAIL 2003 Service Repair Manual BL-128
NATS (NISSAN ANTI-THEFT SYSTEM)
Diagnostic Procedure 6EIS008FB
“SECURITY INDICATOR LAMP DOES NOT LIGHT UP”
1. CHECK FUSE
Check 10A fuse [No. 28, located in the fuse block (J/B)].
Is 10A f](/manual-img/5/57404/w960_57404-3181.png)
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Diagnostic Procedure 6EIS008FB
“SECURITY INDICATOR LAMP DOES NOT LIGHT UP”
1. CHECK FUSE
Check 10A fuse [No. 28, located in the fuse block (J/B)].
Is 10A fuse OK?
Yes >> GO TO 2.
No >> Replace fuse.
2. CHECK SECURITY INDICATOR LAMP
1. Install 10A fuse.
2. Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II Operation Manual NATS”.
3. Turn ignition switch OFF.
4. Start engine and turn ignition switch OFF.
5. Check the security indicator lamp lighting.
Security indicator lamp should be light up.
OK or NG
OK >> INSPECTION END.
NG >> GO TO 3.
3. CHECK SECURITY INDICATOR LAMP POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect security indicator lamp connector.
3. Check voltage between security indicator lamp harness connector M28 terminal 2 (L) and ground.
OK or NG
OK >> GO TO 4.
NG >> Check harness for open or short between fuse and
security indicator lamp.
4. CHECK SECURITY INDICATOR LAMP
Apply 12V direct current to security indicator lamp harness connec-
tor M34 terminals 1 and 2.
OK or NG
OK >> GO TO 5.
NG >> Replace security indicator lamp.2 (L) – Ground : Battery voltage.
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Security indicator lamp should illuminate.
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5. CHECK IMMU FUNCTION
1. Connect NATS IMMU connector.
2. Disconnect security indicator lamp connector.
3. Check continuity between NATS IMMU harness connector E109 terminal 5 (OR) and ground.
OK or NG
OK >> Check harness for open or short between security indi-
cator lamp and NATS IMMU.
NG >> NATS IMMU is malfunctioning.
Replace NATS IMMU. Ref. part No. A
Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II operation man-
ual NATS”.
Diagnostic Procedure 7EIS008FC
Self-diagnostic results:
“LOCK MODE” displayed on CONSULT-II screen
1. CONFIRM SELF-DIAGNOSTIC RESULTS
Confirm SELF-DIAGNOSTIC RESULTS “LOCK MODE” is displayed
on CONSULT-II screen.
Is CONSULT-II screen displayed as shown in figure?
Ye s > > G O T O 2 .
No >> GO TO BL-119, "
SYMPTOM MATRIX CHART 1" .
2. ESCAPE FROM LOCK MODE
1. Turn ignition switch OFF.
2. Turn ignition switch ON with registered key. (Do not start engine.) Wait 5 seconds.
3. Return the key to OFF position.
4. Repeat steps 2 and 3 twice (total of three cycles).
5. Start the engine.
Does engine start?
Yes >> System is OK. (Now system is escaped from “LOCK MODE”.)
No >> GO TO 3.
3. CHECK IMMU ILLUSTRATION
Check NATS IMMU installation. Refer to BL-131, "
How to Replace NATS IMMU" .
OK or NG
OK >> GO TO 4.
NG >> Reinstall NATS IMMU correctly.5 (OR) – Ground : Continuity should exist intermittently.
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4. PERFORM INITIALIZATION WITH CONSULT-II
Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II operation manual NATS”.
NOTE:
If the initialization is not completed or fails, CONSULT-II shows the
above message on the screen.
Can the system be initialized?
Ye s > > S y s t e m i s O K .
No >> GO TO 5
5. PERFORM INITIALIZATION WITH CONSULT-II AGAIN
1. Replace NATS IMMU.
2. Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II operation manual NATS”.
NOTE:
If the initialization is not completed or fails, CONSULT-II shows
the above message on the screen.
Can the system be initialized?
Yes >> System is OK. (NATS IMMU is malfunctioning. Ref. part
No. A )
No >> ECM is malfunctioning.
Replace ECM. Ref. part No. B
Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II operation man-
ual NATS”.
Diagnostic Procedure 8EIS008FD
1. CHECK HARNESS CONNECTOR CONNECTION
Perform initialization with CONSULT-II.
Check harness connector connection between E109 and M80.
Then initialize NATS. For the initialization operation, refer to “CONSULT-II operation NATS”.
Does the security indicator blink just after initialization?
Yes >> System is OK. (The malfunction is caused by improper connector connection.)
No >> GO TO 2.
2. CHECK GROUND CIRCUIT FOR DONGLE UNIT
Check continuity between dongle unit harness connector M80 terminal 1 (B) and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness.
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1 (B) – Ground : Continuity should exist.
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