Nissan Pathfinder (2012 year). Instruction — part 530
U1010 CONTROL UNIT (CAN)
SEC-29
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
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U1010 CONTROL UNIT (CAN)
Description
INFOID:0000000007355687
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control unit, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less
wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart, refer to
LAN-53, "CAN Communication Signal Chart"
DTC Logic
INFOID:0000000007355688
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000007355689
1.
REPLACE INTELLIGENT KEY UNIT
When DTC [U1010] is detected, replace Intelligent Key unit.
>> Replace Intelligent Key unit. Refer to
SEC-114, "Removal and Installation"
Special Repair Requirement
INFOID:0000000007355690
1.
REQUIRED WORK WHEN REPLACING INTELLIGENT KEY UNIT
Initialize control unit. Refer to CONSULT Immobilizer mode and follow the on-screen instructions.
>> Inspection End.
DTC
CONSULT display de-
scription
DTC Detection Condition
Possible cause
U1010
CONTROL UNIT (CAN)
When detecting error during the initial diagnosis of CAN control-
ler of Intelligent Key unit.
Intelligent Key unit
2012 Pathfinder
SEC-30
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B2013 ID DISCORD I-KEY-STRG
B2013 ID DISCORD I-KEY-STRG
Description
INFOID:0000000007355691
Intelligent Key unit performs the ID verification with the steering lock unit and releases the steering lock if both
Intelligent Key unit and steering lock unit ID are same. Intelligent Key unit starts the communication with the
steering lock unit when Intelligent Key is carried into the vehicle and the ignition knob switch is pressed.
DTC Logic
INFOID:0000000007355692
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Press the ignition knob switch
2. Check “Self diagnostic result” with CONSULT.
Is DTC detected?
YES
>> Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000007355693
Regarding Wiring Diagram information, refer to
.
1.
PERFORM INITIALIZATION
Perform initialization with CONSULT. Re-register all mechanical keys.
For initialization and registration of mechanical key. Refer to CONSULT Immobilizer mode and follow the on-
screen instructions.
Can the system be initialized and can steering lock be released with re-registered mechanical key?
YES
>> Steering lock solenoid was unregistered.
NO
>> GO TO 2
2.
CHECK STEERING LOCK SOLENOID POWER SUPPLY-1
1. Turn ignition switch OFF.
2. Disconnect steering lock solenoid connector.
3. Check voltage between steering lock solenoid harness connec-
tor and ground.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Repair or replace harness.
3.
CHECK STEERING LOCK SOLENOID GROUND CIRCUIT
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2013
STRG COMM 1
The ID verification results between Intelligent Key
unit and steering control unit are NG. The registra-
tion is necessary.
Steering lock unit
Terminals
Voltage (V)
(Approx.)
(+)
(–)
Steering lock solenoid con-
nector
Terminal
M65
1
Ground
Battery voltage
PIIB6632E
2012 Pathfinder
B2013 ID DISCORD I-KEY-STRG
SEC-31
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
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Check continuity between steering lock solenoid harness connector
and ground.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Repair or replace harness.
4.
CHECK STEERING LOCK SOLENOID COMMUNICATION CIRCUITS
1. Disconnect Intelligent Key unit connector.
2. Check continuity between steering lock solenoid connector M65
(A) terminals 2, 3 and Intelligent Key unit connector M164 (B)
terminals 1, 32.
3. Check continuity between steering lock solenoid connector M65
(A) terminals 2, 3 and ground.
Is the inspection result normal?
YES
>> GO TO 5
NO
>> Repair or replace harness.
5.
CHECK INTELLIGENT KEY UNIT POWER SUPPLY-2
1. Connect Intelligent Key unit connector.
2. Check voltage between Intelligent Key unit harness connector
and ground.
Is the inspection result normal?
YES
>> GO TO 6
NO
>> Replace Intelligent Key unit. Refer to
SEC-114, "Removal and Installation"
6.
CHECK STEERING LOCK SOLENOID COMMUNICATION CIRCUIT
Terminals
Continuity
(+)
(–)
Steering lock solenoid con-
nector
Terminal
M65
4
Ground
Yes
PIIB6633E
Terminals
Continuity
Steering lock sole-
noid connector
Terminal
Intelligent Key unit
connector
Terminal
M65
2
M164
1
Yes
3
32
Terminals
Continuity
Steering lock solenoid connector
Terminals
M65
2
Ground
No
3
ALKIA1272ZZ
Terminals
Voltage (V)
(Approx.)
(+)
(–)
Intelligent Key unit connector
Terminal
M164
1
Ground
5
WIIA1204E
August 2012
2012 Pathfinder
2012 Pathfinder
SEC-32
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B2013 ID DISCORD I-KEY-STRG
1. Connect steering lock solenoid connector.
2. Using an oscilloscope, check voltage between Intelligent Key
unit connector and ground.
Is the inspection result normal?
YES
>> Replace Steering lock solenoid.
NO
>> Replace Intelligent Key unit. Refer to
SEC-114, "Removal and Installation"
WIIA1205E
Terminals
Condition
Voltage (V)
(Approx.)
(+)
(–)
Intelligent Key
unit connector
Terminal
M164
32
Ground
Steering
lock
Ignition knob is pushed
LOCK status
5
LOCK
⇔
UNLOCK
For 15 seconds after
UNLOCK
5
15 seconds later UN-
LOCK
0
SIIA1911J
JMKIA0433ZZ
August 2012
2012 Pathfinder
2012 Pathfinder
B2190, P1614 NATS ANTENNA AMP.
SEC-33
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
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B2190, P1614 NATS ANTENNA AMP.
Description
INFOID:0000000007355694
Performs ID verification through BCM and NATS antenna amplifier when ignition knob switch is pressed.
Prohibits the release of steering lock or start of engine when an unregistered ID of mechanical key is used.
DTC Logic
INFOID:0000000007355695
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Insert mechanical key into the key cylinder.
2. Press the ignition knob switch.
3. Check “Self diagnostic result” with CONSULT.
Is DTC detected?
YES
>> Refer to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000007355696
Regarding Wiring Diagram information, refer to
SEC-102, "Wiring Diagram - With Intelligent Key System"
1.
CHECK NATS ANTENNA AMP. INSTALLATION
Check NATS antenna amp. installation. Refer to
SEC-113, "Removal and Installation"
.
Is the inspection result normal?
YES
>> GO TO 2
NO
>> Reinstall NATS antenna amp. correctly.
2.
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.
• Perform initialization with CONSULT.
For initialization, refer to CONSULT Immobilizer mode and follow the on-screen instructions.
NO
>> GO TO 3
3.
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.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2190
NATS ANTENNA
AMP
• Inactive communication between NATS antenna
amp. and BCM.
• Mechanical key is malfunctioning.
• Harness or connectors
(The NATS antenna amp. circuit is
open or shorted)
• Mechanical key
• NATS antenna amp.
• BCM
P1614
2012 Pathfinder
SEC-34
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B2190, P1614 NATS ANTENNA AMP.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Repair or replace fuse or harness.
4.
CHECK NATS ANTENNA AMP. GROUND LINE CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect NATS antenna amp. connector.
3. Check continuity between NATS antenna amp. connector M21 terminal 3 and ground.
Is the inspection result normal?
YES
>> GO TO 5
NO
>> • Repair or replace harness.
NOTE:
If harness is OK, replace BCM, refer to
. Perform initialization
with CONSULT. For initialization, refer to CONSULT
Immobilizer mode and follow the on-screen instruc-
tions.
5.
CHECK NATS ANTENNA AMP. SIGNAL LINE- 1
1. Connect NATS antenna amp. connector.
2. Turn ignition switch ON.
3. Check voltage between NATS antenna amp. connector M21 ter-
minal 2 and ground with analog tester.
Is the inspection result normal?
YES
>> GO TO 6
NO
>> • Repair or replace harness.
NOTE:
1 - Ground
: Battery voltage
LIIA1280E
3 - Ground
: Continuity should exist.
LIIA1283E
LIIA1281E
Terminals
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
2012 Pathfinder
B2190, P1614 NATS ANTENNA AMP.
SEC-35
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
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If harness is OK, replace BCM, refer to
BCS-53,"Removal and Installation’
. Perform initialization
with CONSULT. For initialization, refer to CONSULT Immobilizer mode and follow the on-screen
instructions.
6.
CHECK NATS ANTENNA AMP. SIGNAL LINE- 2
Check voltage between NATS antenna amp. connector M21 terminal
4 and ground with analog tester.
Is the inspection result normal?
YES
>> NATS antenna amp. is malfunctioning.
NO
>> • Repair or replace harness.
NOTE:
If harness is OK, replace BCM, refer to
BCS-53,"Removal and Installation’
. Perform initialization
with CONSULT. For initialization, refer to CONSULT Immobilizer mode and follow the on-screen
instructions.
LIIA1282E
Terminals
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
2012 Pathfinder
SEC-36
< DTC/CIRCUIT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B2191, P1615 DIFFERENCE OF KEY
B2191, P1615 DIFFERENCE OF KEY
Description
INFOID:0000000007355697
Performs ID verification through BCM when ignition knob switch is pressed.
Prohibits the release of steering lock or start of engine when an unregistered ID of mechanical key is used.
DTC Logic
INFOID:0000000007355698
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Insert mechanical key into the key cylinder.
2. Press the ignition knob switch.
3. Check “Self diagnostic result” with CONSULT.
Is DTC detected?
YES
>> Refer to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000007355699
1.
PERFORM INITIALIZATION
Perform initialization with CONSULT. Re-register all mechanical keys.
For initialization and registration of mechanical key. Refer to CONSULT Immobilizer mode and follow the on-
screen instructions.
Can the system be initialized and can the engine be started with re-registered mechanical key?
YES
>> Mechanical key was unregistered.
NO
>> BCM is malfunctioning.
• Replace BCM. Refer to
BCS-53,"Removal and Installation’
• Perform initialization again.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2191
DIFFERENCE OF
KEY
The ID verification results between BCM and me-
chanical key are NG. The registration is necessary.
Mechanical key
P1615
2012 Pathfinder
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