Nissan Altima L32. Instruction — part 1321
SEC-434
< COMPONENT DIAGNOSIS >
[SEDAN WITHOUT INTELLIGENT KEY]
U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
DTC Logic
INFOID:0000000004499074
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000004499075
1.
REPLACE BCM
When DTC U1010 is detected, replace BCM.
>> Replace BCM. Refer to
BCS-96, "Removal and Installation"
CONSULT-III display
description
DTC Detection Condition
Possible cause
CAN COMM CIRCUIT
[U1010]
BCM detected internal CAN communication circuit malfunction.
BCM
B2013 ID DISCORD, IMMU-STRG
SEC-435
< COMPONENT DIAGNOSIS >
[SEDAN WITHOUT INTELLIGENT KEY]
C
D
E
F
G
H
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L
M
A
B
SEC
N
O
P
B2013 ID DISCORD, IMMU-STRG
Description
INFOID:0000000004499076
BCM performs the ID verification with the steering lock unit and releases the steering lock if both BCM and
steering lock unit ID are same. BCM starts the communication with the steering lock unit when keyfob is car-
ried into the passenger compartment and the push-button ignition switch is pressed.
DTC Logic
INFOID:0000000004499077
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Lock steering.
2. Press the push-button ignition switch.
3. Check “Self Diagnostic Result” with CONSULT-III.
Is DTC detected?
YES
>> Refer to
SEC-435, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000004499078
1.
PERFORM INITIALIZATION
Perform initialization with CONSULT-III. Re-register all keyfobs.
For initialization and registration of keyfob, refer to “CONSULT-III Operation Instruction”.
Can the system be initialized and can steering lock be released with re-registered keyfob?
YES
>> Steering lock unit was unregistered.
NO
>> Replace steering wheel lock unit.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2013
ID DISCORD, IMMU-
STRG
The ID verification results between BCM and steer-
ing control unit are NG. The registration is neces-
sary.
• Steering wheel lock unit
SEC-436
< COMPONENT DIAGNOSIS >
[SEDAN WITHOUT INTELLIGENT KEY]
B2014 CHAIN OF STRG-IMMU
B2014 CHAIN OF STRG-IMMU
Description
INFOID:0000000004499079
BCM performs the ID verification with the steering lock unit to release the steering. BCM starts the communi-
cation with the steering lock unit when keyfob is carried into the passenger compartment and the push-button
ignition switch is pressed.
DTC Logic
INFOID:0000000004499080
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Lock steering.
2. Press the push-button ignition switch.
3. Check “Self Diagnostic Result” with CONSULT-III.
Is DTC detected?
YES
>> Refer to
SEC-436, "Diagnosis Procedure"
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000004499081
1.
CHECK STEERING LOCK UNIT POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect steering lock unit harness connector.
3. Check voltage between steering lock unit harness connector
and ground while turning ignition switch from OFF to ACC.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> GO TO 2
2.
CHECK STEERING LOCK UNIT POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM harness connector.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2014
CHAIN OF STRG-
IMMU
Inactive communication between steering
control unit and BCM
• Harness or connectors
(steering lock unit circuit is open or short-
ed)
• Steering lock unit
• BCM
Steering lock unit
Ground
Ignition switch
position
Voltage [V]
Connector
Terminal
M32
7
Ground
OFF
→ ACC
Battery volt-
age
OFF or ON
0
ALKIA1348ZZ
B2014 CHAIN OF STRG-IMMU
SEC-437
< COMPONENT DIAGNOSIS >
[SEDAN WITHOUT INTELLIGENT KEY]
C
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A
B
SEC
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3. Check continuity between steering lock unit harness connector
M32 (A) terminal 7 and BCM harness connector M19 (B) termi-
nal 94.
4. Check continuity between steering lock unit harness connector
M32 (A) terminal 7 and ground.
Is the inspection result normal?
YES
>> GO TO 6
NO
>> Repair harness or connector.
3.
CHECK STEERING LOCK UNIT GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between steering lock unit and ground.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Repair harness or connector.
4.
CHECK STEERING LOCK UNIT COMMUNICATION SIGNAL
1. Connect steering lock unit harness connector.
2. Using an oscilloscope, read voltage signal between steering
lock unit harness connector and ground.
Steering lock unit
BCM
Continuity
Connector
Terminal
connector
Terminal
A: M32
7
B: M19
94
Yes
Steering lock unit
Ground
Continuity
Connector
Terminal
A: M32
7
Ground
No
ALKIA0433ZZ
Steering lock unit
Ground
Continuity
Connector
Terminal
M32
5
Ground
Yes
6
ALKIA1641ZZ
ALKIA0435ZZ
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