Nissan Sentra. Manual — part 787
SEC-176
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT INTELLIGENT KEY SYSTEM]
U1000 CAN COMM
DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM
Description
INFOID:0000000009756813
LAN-7, "CAN COMMUNICATION SYSTEM : System Description"
.
DTC Logic
INFOID:0000000009756814
DTC DETECTION LOGIC
NOTE:
U1000 can be set if a module harness was disconnected and reconnected, perhaps during a repair. Confirm
that there are actual CAN diagnostic symptoms and a present DTC by performing the Self Diagnostic Result
procedure.
Diagnosis Procedure
INFOID:0000000009756815
1.
PERFORM SELF DIAGNOSTIC RESULT
1. Turn ignition switch ON and wait for 2 second or more.
2. Check “SELF- DIAG RESULTS”.
Is “CAN COMM CIRCUIT” displayed?
YES
>> Perform CAN Diagnosis as described in DIAGNOSIS section of CONSULT operation manual.
NO
>> Refer to
GI-39, "Intermittent Incident"
.
CONSULT Display
DTC Detection Condition
Possible Cause
CAN COMM CIRCUIT
[U1000]
When any listed module cannot communicate
with CAN communication signal continuously for
2 seconds or more with ignition switch ON
In CAN communication system, any item (or
items) of the following listed below is malfunc-
tioning.
• Transmission
• Receiving (ECM)
• Receiving (VDC/TCS/ABS)
• Receiving (METER/M&A)
• Receiving (TCM)
• Receiving (IPDM E/R)
U1010 CONTROL UNIT (CAN)
SEC-177
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT INTELLIGENT KEY SYSTEM]
C
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U1010 CONTROL UNIT (CAN)
DTC Logic
INFOID:0000000009756816
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000009756817
1.
REPLACE BCM
When DTC “U1010” is detected, replace BCM.
>> Replace BCM. Refer to
BCS-126, "Removal and Installation"
.
CONSULT Display
DTC Detection Condition
Possible Cause
CONTROL UNIT (CAN)
[U1010]
BCM detected internal CAN communication cir-
cuit malfunction.
BCM
SEC-178
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT INTELLIGENT KEY SYSTEM]
P1610 LOCK MODE
P1610 LOCK MODE
Description
INFOID:0000000009756818
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 malfunctioning.
DTC Logic
INFOID:0000000009756819
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check “Self diagnostic result” with CONSULT.
Is DTC detected?
YES
>> Refer to
SEC-178, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009756820
1.
CHECK ENGINE START FUNCTION
1. Perform the check for DTC except DTC P1610.
2. Use CONSULT 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-39, "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 malfunctioning.
• Mechanical key
• BCM
• ECM
B2190, P1614 NATS ANTENNA AMP.
SEC-179
< DTC/CIRCUIT DIAGNOSIS >
[WITHOUT INTELLIGENT KEY SYSTEM]
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B2190, P1614 NATS ANTENNA AMP.
Description
INFOID:0000000009756821
Performs ID verification through BCM and NATS antenna amplifier when ignition key is inserted and ignition
switch turned ON.
Prohibits the start of engine when an unregistered ID of ignition key is used.
DTC Logic
INFOID:0000000009756822
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Insert ignition key into the key cylinder.
2. Turn ignition switch ON.
3. Check “Self diagnostic result” with CONSULT.
Is DTC detected?
YES
>> Refer to
SEC-179, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009756823
Regarding Wiring Diagram information, refer to
1.
CHECK NATS ANTENNA AMP. INSTALLATION
Check NATS antenna amp. installation. Refer to
SEC-193, "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 M42 terminal 1 and ground.
Is the inspection result normal?
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2190
NATS ANTENNA
AMP
• Inactive communication between NATS antenna
amp. and BCM.
• Ignition key is malfunctioning.
• Harness or connectors
(The NATS antenna amp. circuit is
open or shorted)
• Ignition key
• NATS antenna amp.
• BCM
P1614
1 - Ground
: Battery voltage
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