check engine NISSAN VERSA 2006 Workshop Service Repair Manual

INTELLIGENT KEY SYSTEM
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Revision: June 20062007 Versa
KEY WARNING LAMP DOES NOT ILLUMINATE
NOTE:

Before performing the diagnosis in the following table, check “Trouble Diagnosis Procedure”. Refer to BL-
109, "Trouble Diagnosis Procedure" .

Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis,
and check each symptom.

If the following “symptoms” are detected, check systems shown in the “Diagnoses/service procedure” col-
umn in this order.

Check if ignition switch turns using mechanical key. If it turns, check if “ENGINE START BY I-KEY” in
“WORK SUPPORT” mode is ON.
Conditions of Vehicle (Operating Conditions)

Intelligent Key is registered.

Mechanical key is out of ignition switch.

One or more registered Intelligent Keys are in the vehicle.
NON DTC ITEM
NOTE:

Before performing the diagnosis in the following table, check “Trouble Diagnosis Procedure”. Refer to BL-
109, "Trouble Diagnosis Procedure" .

Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis,
and check each symptom.

If the following “symptoms” are detected, check systems shown in the “Diagnoses/service procedure” col-
umn in this order.
Conditions of Vehicle (Operating Conditions)

Intelligent Key is registered.

Multiple mechanical keys are not set in a keyfob.
(If mechanical keys are near the ignition switch, the operation may not work properly.)
Symptom Diagnosis/service procedure Reference page
Ignition switch does not turn on with Intelligent Key.
[GREEN key warning lamp does not illuminate].1.Check Intelligent Key unit power supply and ground
circuit.BL-123
2. Check ignition knob switch.BL-127
3. Check key switch.BL-124
4. Check "KEY" warning lamp (GREEN).BL-156
5. Replace Intelligent Key unit.BL-160
RED key warning lamp does not illuminate
[Without Intelligent Key].1. Check "KEY" warning lamp (RED).BL-155
2. Replace Intelligent Key unit.BL-160
Symptom Diagnosis/service procedure Reference page
Non DTC Item1. Check key switch.BL-124
2. Check NATS antenna amp.BL-212

BL-116
INTELLIGENT KEY SYSTEM
Revision: June 20062007 Versa
ENGINE START CONDITION CHECK
NOTE:

Before performing the diagnosis in the following table, check “Trouble Diagnosis Procedure”. Refer to BL-
109, "Trouble Diagnosis Procedure" .

If the following “symptoms” are detected, check systems shown in the ”Diagnoses/service procedure” col-
umn in this order.
ALL FUNCTIONS OF INTELLIGENT KEY SYSTEM DO NOT OPERATE
NOTE:

Before performing the diagnosis in the following table, check “Trouble Diagnosis Procedure”. Refer to BL-
109, "Trouble Diagnosis Procedure" .

Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis,
and check each symptom.

If the following “symptoms” are detected, check systems shown in the “Diagnosis/service procedure” col-
umn in this order.
Conditions of Vehicle (Operating Conditions)

“ENGINE START BY I-KEY” and “LOCK/UNLOCK BY I-KEY” are ON when setting on CONSULT-II.

Mechanical key is out of ignition switch.

Ignition switch is not depressed.

All doors are closed.

Intelligent key is registered.
DOOR LOCK/UNLOCK FUNCTION MALFUNCTION
NOTE:

Before performing the diagnosis in the following table, check “Trouble Diagnosis Procedure”. Refer to BL-
109, "Trouble Diagnosis Procedure" .

Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis,
and check each symptom.

If the following “symptoms” are detected, check systems shown in the “Diagnosis/procedure” column in
this order.
Conditions of Vehicle (Operating Conditions)

“LOCK/UNLOCK BY I-KEY” is ON when setting on CONSULT-II.

Mechanical key is out of ignition switch.

Ignition switch is not depressed.

All doors are closed.

Intelligent Key is registered.
Symptom Diagnosis/service procedure Reference page
Engine start condition check1.Check CVT device (park position switch).
(With CVT)BL-151
2. Check key interlock solenoid (with M/T).BL-147
3. Check stop lamp switch (With CVT).BL-148
4. Check stop lamp switch (with M/T).BL-149
Symptom Diagnosis/service procedure Reference page
All function of Intelligent Key system dose not
operate.1.Check Intelligent Key unit power supply and ground
circuit.BL-123
2. Check Intelligent Key battery inspection.BL-159
3. Replace Intelligent Key unit.BL-160

BL-218
NATS (NISSAN ANTI-THEFT SYSTEM)
Revision: June 20062007 Versa
NATS SELF-DIAGNOSTIC RESULTS ITEM CHART
Detected items
[NATS program card screen terms]P No. Code
(Self-diagnostic
result of
“ENGINE”)Malfunction is detected when.....Reference
page
CHAIN OF ECM-IMMU
[P1612]NATS MAL-
FUNCTION
P1612Communication impossible between ECM and BCM
In rare case, “CHAIN OF ECM-IMMU” might be stored
during key registration procedure, even if the system is
not malfunctioning.BL-223
CHAIN OF IMMU-KEY
[P1614]NATS MAL-
FUNCTION
P1614BCM cannot receive the key ID signal.BL-225
ID DISCORD, IMM-ECM
[P1611]NATS MAL-
FUNCTION
P1611The result of ID verification between BCM and ECM is
NG. System initialization is required.BL-227
LOCK MODE
[P1610]NATS MAL-
FUNCTION
P1610When the starting operation is carried out five or more
times consecutively under the following conditions, NATS
will shift the mode to one which prevents the engine from
being started.

Unregistered mechanical key is used.

BCM or ECM’s malfunctioning.BL-229
DON'T ERASE BEFORE CHECK-
ING ENG DIAG—All engine trouble codes except NATS trouble code has
been detected in ECM.BL-220

NATS (NISSAN ANTI-THEFT SYSTEM)
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Trouble Diagnosis ProcedureEIS0093W
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-II operation
manual.
Malfunctions>>GO TO 2.
2. START ENGINE WITH INTELLIGENT KEY (IF EQUIPPED)
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. Refer
to BL-159, "
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 BL-114, "
KEY WARNING LAMP (GREEN) ILLUMINATES" .
KEY warning lamp illuminates red>>GO TO BL-114, "
KEY WARNING LAMP (RED) ILLUMINATES" .
Does not illuminate>>GO TO BL-115, "
KEY WARNING LAMP DOES NOT ILLUMINATE" .
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-II
operation manual.
The engine cannot be started by all mechanical keys>> BL-220, "
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-II.
Malfunction is detected>>GO TO B L - 111 , "
SELF-DIAGNOSTIC RESULTS" .
No malfunction is detected>>GO TO BL-110, "
WORK FLOW" .

BL-220
NATS (NISSAN ANTI-THEFT SYSTEM)
Revision: June 20062007 Versa
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-II.
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-II. Refer to BL-222, "
SYMPTOM MATRIX CHART 1" .
>> GO TO 4.
4. NATS TROUBLE DIAGNOSIS
Repair NATS (if necessary, perform “C/U INITIALZATIN” with CONSULT-II.)
>> GO TO 5.
5. ERASE SELF-DIAGNOSIS
Erase the record of “SELF-DIAGNOSIS” by using CONSULT-II.
>> 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-II
screen.
NOTE:
This indication means that malfunction have been detected in NATS and engine control system.
>> GO TO 8.

NATS (NISSAN ANTI-THEFT SYSTEM)
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8. NATS TROUBLE DIAGNOSIS
Repair NATS according to self-diagnosis results refer to NATS (if necessary, perform “C/U INITIALZATIN” with
CONSULT-II.)
NOTE:
Do not erase “SELF-DIAGNOSIS” by using CONSULT-II.
>> 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, refer to EC-8, "
INDEX FOR DTC" .
Without engine diagnostic codes present, refer to EC-83, "
TROUBLE DIAGNOSIS" .
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-II NATS program card and
generalized program card.
>> GO TO 13
13. COMFIRMATION
Perform running test with CONSULT-II in engine “SELF-DIAGNOSIS” mode.
“NO DTC” is displayed>> End of inspection.
Malfunction information is displayed>> GO TO 2.

BL-222
NATS (NISSAN ANTI-THEFT SYSTEM)
Revision: June 20062007 Versa
Trouble DiagnosesEIS0093X
SYMPTOM MATRIX CHART 1
Self-diagnosis related item

*: When NATS detects trouble, the security indicator lights up while ignition key is in the “ON” position.
SYMPTOM MATRIX CHART 2
Non self-diagnosis related item
*: CONSULT-II self-diagnostic results display screen “no malfunction is detected”. SYMPTOMDisplayed “SELF-DIAG
RESULTS” on CON-
SULT-II screen.DIAGNOSTIC PROCE-
DURE
(Reference page)SYSTEM
(Malfunctioning part or mode)

Security indicator
lighting up*

Engine cannot be
startedCHAIN OF ECM-IMMU
[P1612]PROCEDURE 1
(BL-223
)In rare case, “CHAIN OF ECM-IMMU” might be stored
during key registration procedure, even if the system is
not malfunctioning.
Open circuit in battery voltage line of BCM circuit
Open circuit in ignition line of BCM circuit
Open circuit in ground line of BCM circuit
Open or short circuit between BCM and ECM commu-
nication line
ECM
BCM
CHAIN OF IMMU-KEY
[P1614]PROCEDURE 2
(BL-225
)Malfunction of key ID chip
Communication line between ANT/ AMP and BCM:
Open circuit or short circuit of battery voltage line or
ground line
Open circuit in power source line of ANT/ AMP circuit
Open circuit in ground line of ANT/ AMP circuit
NATS antenna amp.
BCM
ID DISCORD, IMM-
ECM
[P1611]PROCEDURE 3
(BL-227
)System initialization has not yet been completed.
ECM
LOCK MODE
[P1610]PROCEDURE 5
(BL-229
)When the starting operation is carried out five or more
times consecutively under the following conditions,
NATS will shift the mode to one which prevents the
engine from being started.

Unregistered ignition key is used.

BCM or ECM’s malfunctioning.
Security indicator
lighting up*DON'T ERASE
BEFORE CHECKING
ENG DIAGWORK FLOW
(BL-220
)Engine trouble data and NATS trouble data have been
detected in ECM
SYMPTOMDIAGNOSTIC PROCEDURE
(Reference page)SYSTEM
(Malfunctioning part or mode)
Security indicator does not light up*.PROCEDURE 4
(BL-228
)Security indictor.
Open circuit between Fuse and BCM
BCM

BL-224
NATS (NISSAN ANTI-THEFT SYSTEM)
Revision: June 20062007 Versa
4. CHECK GROUND CIRCUIT FOR BCM
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between BCM connector and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace harness.
5. REPLACE BCM
1. Replace BCM
2. Perform initialization with CONSULT-II.
For initialization, refer to “CONSULT-II Operation Manual NATS”.
Does the engine start?
Yes >> BCM is malfunctioning.

Replace BCM. Refer to BCS-25, "Removal and Installation of BCM" .

Perform initialization with CONSULT-II

For initialization, refer to “CONSULT-II Operation Manual NATS”
No >> ECM is malfunctioning.

Replace ECM.

Perform initialization or re-communicating function

For initialization, refer to “CONSULT-II Operation Manual NATS”

For re-communicating function, refer to BL-214, "ECM Re-communicating Function"
BCM connectorTe r m i n a l
Continuity
(+) (–)
M20 67 Ground Yes
PIIB6588E

NATS (NISSAN ANTI-THEFT SYSTEM)
BL-225
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Revision: June 20062007 Versa
Diagnostic Procedure 2EIS0093Z
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-222, "
SYMPTOM MATRIX CHART 1" .
2. CHECK NATS ANTENNA AMP. INSTALLATION
Check NATS antenna amp. installation. Refer to BL-230, "
How to Replace NATS Antenna Amp." .
OK or NG
OK >> GO TO 3.
NG >> Reinstall NATS antenna amp. correctly.
3. 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

Perform initialization with CONSULT-II
For initialization, refer to “CONSULT-II Operation Manual NATS”
No >> GO TO 4.
4. CHECK POWER SUPPLY FOR NATS ANTENNA AMP.
1. Turn ignition switch “OFF”.
2. Check voltage between NATS antenna amp. connector and ground.
OK or NG
OK >> GO TO 5.
NG >> Check the following.

20A fuse [No. 53, located in IPDM E/R]

Harness for open or short between fuse and NATS
antenna amp.
PIIA1263E
NATS antenna amp.
connectorTerminal
Voltage [V]
(Approx.)
(+) (–)
M21 1 Ground Battery voltage
PIIB6589E

BL-228
NATS (NISSAN ANTI-THEFT SYSTEM)
Revision: June 20062007 Versa
Diagnostic Procedure 4EIS00941
“COMBINATION METER (SECURITY) DOES NOT LIGHT UP”
1. CHECK FUSE
Check 10A fuse [No.13, located in the fuse block (J/B)]
OK or NG
OK >> GO TO 2.
NG >> Replace fuse.
2. CHECK COMBINATION METER (SECURITY)
1. Install 10A fuse.
2. Start engine and turn ignition switch OFF.
3. Check if the combination meter (security) lights up.
OK or NG
OK >> INSPECTION END.
NG >> GO TO 3.
3. CHECK COMBINATION METER (SECURITY) POWER SUPPLY CIRCUIT
1. Disconnect combination meter (security) connector.
2. Check voltage between combination meter (security) connector and ground.
OK or NG
OK >> GO TO 4.
NG >> Check harness for open or short between fuse and com-
bination meter (security).
4. CHECK BCM FUNCTION
1. Connect combination meter (security) connector.
2. Disconnect BCM connector.
3. Check voltage between BCM connector and ground.
OK or NG
OK >> BCM is malfunctioning.

Replace BCM. Refer to BCS-25, "Removal and Instal-
lation of BCM" .

Perform initialization with CONSULT-II

For initialization, refer to “CONSULT-II Operation
Manual NATS”
NG >> Check the following.

Harness for open or short between combination meter (security) and BCM

Indicator lamp condition Combination meter (security) should light up.
Combination meter
(security) connec-
torTe r m i n a l
Voltage [V]
(Approx.)
(+) (-)
M24 27 Ground Battery voltage
PIIB6593E
BCM connectorTe r m i n a l
Voltage [V]
(Approx.)
(+) (-)
M18 23 Ground Battery voltage
PIIB6594E