Infiniti M35/M45 Y50. Manual — part 277
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
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DIAGNOSTIC PROCEDURE
1.
CHECK POWER SUPPLY CIRCUIT
1.
Start engine.
2.
Check voltage between Intelligent Key unit connector and ground.
OK or NG
OK
>> Check the condition of harness and connector. If it is
OK, check the self-diagnosis results using CONSULT-II
again.
NG
>> Check alternator. Refer to
Trouble Diagnosis Symptom Chart 1
NIS001Z0
Power supply switching operation cannot be operated with all Intelligent Keys.
CAUTION:
●
Follow Trouble Diagnosis Flowchart referring to “Diagnosis Procedure”. Determine malfunction-
ing condition before performing this diagnosis.
●
Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting
diagnosis.
●
Check systems shown in the “Diagnosis/service procedure” column in this order.
CONDITIONS OF VEHICLE (OPERATING CONDITIONS)
●
Engine start function is ON when setting on CONSULT-II.
●
Use Intelligent Key with registered Intelligent Key ID.
●
One or more of Intelligent Keys with registered Intelligent Key ID is in the passenger room.
Terminals
Voltage (V)
(Approx.)
(+)
(–)
Intelligent Key unit
connector
Terminal
M32
1
Ground
Battery voltage
M33
41
57
PIIB6252E
Diagnosis/service procedure
Reference page
1. Check push button ignition switch
2. Check inside key antenna
3. Check remote keyless entry receiver
4. Replace Intelligent Key unit.
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INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
Trouble Diagnosis Symptom Chart 2
NIS001Z1
When performing the push-button ignition switch operation when the Intelligent Key is carried, there is a time
difference in the power supply position switching (the power supply changes in approximately 3 seconds)
CAUTION:
●
Follow Trouble Diagnosis Flowchart referring to “Diagnosis Procedure”. Determine malfunction-
ing condition before performing this diagnosis.
●
Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting
diagnosis.
●
Check systems shown in the “Diagnosis/service procedure” column in this order.
CONDITIONS OF VEHICLE (OPERATING CONDITIONS)
●
Another Intelligent Key or foreign materials are not inserted in the key slot.
NOTE:
If another Intelligent Key or foreign materials are inserted at push-button ignition switch operation, perform the
immobilizer ID verification first. When the immobilizer ID verification cannot be performed, the system
switches to the Intelligent Key ID verification. Therefore, there is the time difference in the push-button ignition
switch operation.
Trouble Diagnosis Symptom Chart 3
NIS001Z2
When performing the push-button ignition switch operation when the Intelligent Key is inserted into the key
slot, there is the time difference in the power supply position switching (the power supply changes in approxi-
mately 3 seconds)
CAUTION:
●
Follow Trouble Diagnosis Flowchart referring to “Diagnosis Procedure”. Determine malfunction-
ing condition before performing this diagnosis.
●
Make sure that vehicle is under the condition shown in “Conditions of vehicle” before starting
diagnosis.
●
Check systems shown in the “Diagnosis/service procedure” column in this order.
CONDITIONS OF VEHICLE (OPERATING CONDITIONS)
●
A device emitting electromagnetic signals such as a portable telephone or a radio is not used around the
key slot.
●
The Intelligent Key is inserted into the key slot until it clicks.
NOTE:
If another Intelligent Key is inserted at push-button ignition switch operation, perform the immobilizer ID verifi-
cation first. When the immobilizer ID verification cannot be performed, the system switches to the Intelligent
Key ID verification. Therefore, there is the time difference in the push-button ignition switch operation.
Diagnosis/service procedure
Reference page
1. Check key switch built in key slot
2. Replace Intelligent Key unit.
Diagnosis/service procedure
Reference page
1. Check NATS antenna amp. built in key slot
2. Replace Intelligent Key unit.
INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
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Check CAN Communication System
NIS001Z3
1.
CHECK SELF-DIAGNOSTIC RESULTS
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which performs CAN communication.
With CONSULT-II
●
Connect CONSULT-II, and turn ignition switch ON.
●
Touch “INTELLIGENT KEY” on “SELECT SYSTEM” screen.
●
Touch “SELF-DIAG RESULTS” on “SELECT DIAG MODE” screen.
●
Check display content in self-diagnostic results.
OK or NG
NO DTC IS DETECTED>> INSPECTION END
CAN COMM CIRCUIT [U1000]>> After printing “SELF-DIAGNOSIS RESULTS”, go to “CAN SYSTEM”,
Refer to
LAN-3, "Precautions When Using CONSULT-II"
CONTROL UNIT(CAN) [U1010]>> Replace Intelligent Key unit.
Check Push-Button Ignition Switch
NIS001Z4
1.
CHECK POWER SUPPYL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect push-button ignition switch connector.
3.
Check voltage between push-button ignition switch connector and ground.
OK or NG
OK
>> GO TO 3.
NG
>> GO TO 2.
CONSULT-II display item
DTC code
NO DTC IS DETECTED
—
CAN COMM CIRCUIT
U1000
CONROL UNIT (CAN)
U1010
Terminals
Voltage (V)
(Approx.)
(+)
(–)
push-button igni-
tion switch
connector
Terminal
M27
4
Ground
Battery voltage
PIIB6256E
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INTELLIGENT KEY SYSTEM/ENGINE START FUNCTION
2.
CHECK HARNESS CONTINUITY
1.
Disconnect Intelligent Key unit connector.
2.
Check continuity between Intelligent Key unit connector and push-button ignition switch connector.
3.
Check continuity between Intelligent Key unit connector and
ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness.
3.
CHECK PUSH-BUTTON IGNITION SWITCH
Check push-button ignition switch.
OK or NG
OK
>> GO TO 4.
NG
>> Replace push-button ignition switch.
4.
CHECK GROUND CIRCUIT
Check push-button ignition switch connector.
OK or NG
OK
>> Check the condition of harness and connector.
NG
>> Repair or replace harness.
A
B
Continuity
Intelligent Key
unit connector
Terminal
push-button igni-
tion switch
connector
Terminal
M32
39
M27
4
Yes
A
Ground
Continuity
Intelligent Key unit connector
Terminal
M32
39
No
PIIB6240E
Terminal
Push-button igni-
tion switch condi-
tion
Continuity
Push-button ignition switch
1
4
Pushed
Yes
Released
No
PIIB6241E
Push-button ignition switch con-
nector
Terminal
Ground
Continuity
M27
1
Yes
PIIB6257E
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