Nissan Pathfinder (2010 year). Instruction — part 568
SEC-38
< COMPONENT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B2193, P1612 CHAIN OF ECM-IMMU
B2193, P1612 CHAIN OF ECM-IMMU
Description
INFOID:0000000005258974
BCM performs the ID verification with ECM that allows the engine to start. BCM starts the communication with
ECM if ignition switch is turned ON and starts the engine if the ID is OK. ECM prevents the engine from start-
ing if the ID is not registered.
DTC Logic
INFOID:0000000005258975
DTC DETECTION LOGIC
NOTE:
• If DTC B2193 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
.
• If DTC B2193 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
.
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES
>> Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000005258976
1.
REPLACE BCM
1. Replace BCM. Refer to
BCS-59, "Removal and Installation"
.
2. Perform initialization with CONSULT-III.
For initialization, refer to “CONSULT-III Operation Instruction”.
Does the engine start?
YES
>> BCM was malfunctioning.
NO
>> ECM is malfunctioning.
• Replace ECM.
• Perform ECM re-communicating function.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2193
CHAIN OF BCM-
ECM
Inactive communication between ECM and BCM
• Harness or connectors
(The CAN communication line is
open or short)
• BCM
• ECM
P1612
2010 Pathfinder
B2194 ID DISCORD IMMU-I-KEY
SEC-39
< COMPONENT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
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B2194 ID DISCORD IMMU-I-KEY
Description
INFOID:0000000005258977
BCM performs the ID verification with Intelligent Key unit that allows the engine to start. BCM starts the com-
munication with Intelligent Key unit if ignition switch is turned ON and starts the engine if the ID is OK. BCM
prevents the engine from starting if the ID is not registered.
DTC Logic
INFOID:0000000005258978
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES
>> Refer to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000005258979
1.
PERFORM INITIALIZATION
1. Perform initialization with CONSULT-III. Re-register all mechanical keys.
For initialization and registration of mechanical key. Refer to “CONSULT-III Operation Instruction”.
2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES
>> GO TO 2
NO
>> ID was unregistered.
2.
REPLACE BCM
1. Turn ignition switch OFF.
2. Replace BCM. Refer to
BCS-59, "Removal and Installation"
.
3. Perform initialization with CONSULT-III. Re-register all mechanical keys.
For initialization and registration of mechanical key. Refer to “CONSULT-III Operation Instruction”.
Can the system be initialized and can the engine be started?
YES
>> BCM is malfunctioning.
NO
>> GO TO 3
3.
CHECK INTERMITTENT INCIDENT
GI-37, "Intermittent Incident"
.
>> Inspection End.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2194
DISCORD BCM-I-
KEY
The ID verification results between BCM and Intel-
ligent Key unit are NG. The registration is neces-
sary.
• BCM
• Intelligent Key unit
2010 Pathfinder
SEC-40
< COMPONENT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
B2552 INTELLIGENT KEY
B2552 INTELLIGENT KEY
Description
INFOID:0000000005258980
Intelligent Key unit performs engine start operation and steering lock control by crosschecking ID with the
Intelligent Key.
DTC Logic
INFOID:0000000005258981
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES
>> Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000005258982
1.
REPLACE INTELLIGENT KEY UNIT
1. Replace Intelligent Key unit.
2. Perform initialization with CONSULT-III. Re-register all mechanical keys. Refer to “CONSULT-III Opera-
tion Instruction”.
3. Start the engine.
Does the engine start?
YES
>> Inspection End.
NO
>> Perform “DTC confirmation procedure”. Refer to
.
Special Repair Requirement
INFOID:0000000005258983
1.
REQUIRED WORK WHEN REPLACING INTELLIGENT KEY UNIT
Initialize control unit. Refer to CONSULT-III Operation Instruction.
>> Inspection End.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2552
INTELLIGENT KEY
UNIT
Malfunction is detected inside Intelligent
key unit.
Intelligent Key unit
2010 Pathfinder
B2590 ID DISCORD BCM-I-KEY
SEC-41
< COMPONENT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
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B2590 ID DISCORD BCM-I-KEY
Description
INFOID:0000000005258984
Intelligent Key unit performs the ID verification with BCM that allows the engine to start. BCM starts the engine
if the ID is OK and prevents the engine from starting if the ID is not registered.
DTC Logic
INFOID:0000000005258985
DTC DETECTION LOGIC
NOTE:
• If DTC B2590 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
• If DTC B2590 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010. Refer to
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES
>> Refer to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000005258986
1.
PERFORM INITIALIZATION
Perform initialization with CONSULT-III. Re-register all mechanical keys.
For initialization and registration of mechanical key. Refer to “CONSULT-III Operation Instruction”.
Can the system be initialized and can the engine be started with re-registered mechanical key?
YES
>> ID was unregistered.
NO
>> BCM is malfunctioning.
• Replace BCM. Refer to
BCS-59, "Removal and Installation"
.
• Perform initialization again
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2590
ID DISCORD BCM-I-
KEY
The ID verification results between BCM and Intel-
ligent Key unit are NG. The registration is neces-
sary.
• BCM
• Intelligent Key unit
2010 Pathfinder
SEC-42
< COMPONENT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
P1610 LOCK MODE
P1610 LOCK MODE
Description
INFOID:0000000005258987
When the starting operation is carried more than five times consecutively under the following conditions, NATS
will shift to the mode which prevents the engine from being started.
• Unregistered mechanical key is used.
• BCM or ECM's malfunctioning.
DTC Logic
INFOID:0000000005258988
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES
>> Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000005258989
1.
CHECK ENGINE START FUNCTION
1. Perform the check for DTC except DTC P1610.
2. Use CONSULT-III to erase DTC after fixing.
3. Check that engine can start with registered mechanical key.
Does the engine start?
YES
>> Inspection End.
NO
>> GO TO 2
2.
CHECK INTERMITTENT INCIDENT
GI-37, "Intermittent Incident"
>> Inspection End.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
P1610
LOCK MODE
When the starting operation is carried out
five or more times consecutively under the
following conditions.
• Unregistered mechanical key
• BCM or ECM's malfunctioning.
—
2010 Pathfinder
POWER SUPPLY AND GROUND CIRCUIT
SEC-43
< COMPONENT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
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POWER SUPPLY AND GROUND CIRCUIT
INTELLIGENT KEY UNIT
INTELLIGENT KEY UNIT : Diagnosis Procedure
INFOID:0000000005258990
Regarding Wiring Diagram information, refer to
SEC-85, "Wiring Diagram - INTELLIGENT KEY SYSTEM/
.
1.
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect Intelligent Key unit connector.
3. Check voltage between Intelligent Key unit harness connector
M70 terminals 6, 11 and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace Intelligent Key power supply circuit.
2.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between Intelligent Key unit harness connector
M70 terminal 12 and ground.
Is the inspection result normal?
YES
>> Power supply and ground circuits are OK.
NO
>> Repair or replace the Intelligent Key unit ground circuit.
BCM
BCM : Diagnosis Procedure
INFOID:0000000005258991
Regarding Wiring Diagram information, refer to
.
1.
CHECK FUSES AND FUSIBLE LINK
Check that the following fuses and fusible link are not blown.
Is the fuse blown?
Connector
Terminals
Ignition switch position
M70
(+)
(–)
OFF
ON
6
Ground
0V
Battery voltage
11
Battery voltage
Battery voltage
WIIA1171E
12 - Ground
: Continuity should exist.
WIIA1172E
Terminal No.
Signal name
Fuses and fusible link No.
57
Battery power supply
18 (10A)
70
G (50A)
11
Ignition ACC or ON
4 (10A)
38
Ignition ON or START
1 (10A)
2010 Pathfinder
SEC-44
< COMPONENT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
POWER SUPPLY AND GROUND CIRCUIT
YES
>> Replace the blown fuse or fusible link after repairing the affected circuit.
NO
>> GO TO 2
2.
CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES
>> GO TO 3
NO
>> Repair or replace harness.
3.
CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair or replace harness.
Connector
Terminals
Power
source
Condition
Voltage (V) (Ap-
prox.)
(+)
(-)
M18
11
Ground
ACC
power
supply
Ignition
switch
ACC or
ON
Battery voltage
38
Ground
Ignition
power
supply
Ignition
switch ON
or START
Battery voltage
M20
57
Ground
Battery
power
supply
Ignition
switch
OFF
Battery voltage
70
Ground
Battery
power
supply
Ignition
switch
OFF
Battery voltage
LIIA2415E
BCM
Ground
Continuity
Connector
Terminal
M20
67
Yes
LIIA0915E
2010 Pathfinder
KEY CYLINDER SWITCH
SEC-45
< COMPONENT DIAGNOSIS >
[WITH INTELLIGENT KEY SYSTEM]
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KEY CYLINDER SWITCH
Description
INFOID:0000000005258992
The main power window and door lock/unlock switch detects condition of the door key cylinder switch and
transmits to BCM as the LOCK or UNLOCK signal.
Component Function Check
INFOID:0000000005258993
1.
CHECK DOOR KEY CYLINDER SWITCH INPUT SIGNAL
Check "KEY CYL LK-SW" AND "KEY CYL UN-SW" in DATA MONITOR mode for “POWER DOOR LOCK
SYSTEM” with CONSULT-III.
Is the inspection result normal?
YES
>> Key cylinder switch is OK.
NO
>> Refer to
Diagnosis Procedure
INFOID:0000000005258994
Regarding Wiring Diagram information, refer to
SEC-69, "Wiring Diagram - VEHICLE SECURITY SYSTEM"
1.
CHECK DOOR KEY CYLINDER SWITCH LH
With CONSULT-III
Check front door lock assembly LH (key cylinder switch) ("KEY CYL LK-SW") and ("KEY CYL UN-SW) in
DATA MONITOR mode with CONSULT–III.
• When key inserted in left front key cylinder is turned to LOCK:
• When key inserted in left front key cylinder is turned to UNLOCK:
Without CONSULT-III
Check voltage between main power window and door lock/unlock
switch connector D7 terminals 4, 6 and ground.
Is the inspection result normal?
YES
>> Key cylinder switch signal is OK.
Monitor item
Condition
KEY CYL LK-SW
Lock
: ON
Neutral / Unlock
: OFF
KEY CYL UN-SW
Unlock
: ON
Neutral / Lock
: OFF
KEY CYL LK-SW
: ON
KEY CYL UN-SW
: ON
Connector
Terminals
Condition of left front key cylinder
Voltage (V)
(Approx.)
(+)
(–)
D7
4
Ground
Neutral/Unlock
5
Lock
0
6
Neutral/Lock
5
Unlock
0
LIIA0566E
2010 Pathfinder
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