Nissan Frontier D40. Manual — part 967
SEC-24
< COMPONENT DIAGNOSIS >
B2193, P1612 CHAIN OF ECM-IMMU
B2193, P1612 CHAIN OF ECM-IMMU
Description
INFOID:0000000005272605
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:0000000005272606
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:0000000005272607
1.
REPLACE BCM
1.
Replace BCM. Refer to
BCS-54, "Removal and Installation"
.
2.
Perform initialization with CONSULT-III.
For initialization, refer to “CONSULT-III Operation Manual”.
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
P1610 LOCK MODE
SEC-25
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
P1610 LOCK MODE
Description
INFOID:0000000005272608
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:0000000005272609
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:0000000005272610
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-46, "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.
—
SEC-26
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
INFOID:0000000005549837
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?
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
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)
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
POWER SUPPLY AND GROUND CIRCUIT
SEC-27
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES
>> Inspection End.
NO
>> Repair or replace harness.
BCM
Ground
Continuity
Connector
Terminal
M20
67
Yes
LIIA0915E
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