Nissan Maxima. Manual — part 1054
B2192 ID DISCORD, IMMU-ECM
SEC-41
< DTC/CIRCUIT DIAGNOSIS >
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B2192 ID DISCORD, IMMU-ECM
Description
INFOID:0000000010051939
BCM performs the ID verification with ECM that allows the engine to start. Start the engine if the ID is OK.
ECM prevents the engine from starting if the ID is not registered. BCM starts the communication with ECM if
ignition switch is turned ON.
DTC Logic
INFOID:0000000010051940
DTC DETECTION LOGIC
NOTE:
• If DTC B2192 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
• If DTC B2192 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 under the following conditions:
-
CVT selector lever is in the P or N position.
-
Do not depress the brake pedal.
2. Check “Self Diagnostic Result” with CONSULT.
Is DTC detected?
YES
>> Refer to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010051941
1.
PERFORM INITIALIZATION
Perform initialization with CONSULT. Re-register all Intelligent Keys.
For initialization and registration of Intelligent 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 Intelligent Key?
YES
>> ID was unregistered.
NO
>> BCM is malfunctioning.
• Replace BCM. Refer to
BCS-79, "Removal and Installation"
.
• Perform initialization again.
• Replace ECM.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2192
ID DISCORD, IMMU-
ECM
The ID verification results between BCM and ECM
are NG. The registration is necessary.
• BCM
• ECM
SEC-42
< DTC/CIRCUIT DIAGNOSIS >
B2193 CHAIN OF ECM-IMMU
B2193 CHAIN OF ECM-IMMU
Description
INFOID:0000000010051942
BCM performs the ID verification with ECM that allows the engine to start. Start the engine if the ID is OK.
ECM prevents the engine from starting if the ID is not registered. BCM starts the communication with ECM if
ignition switch is turned ON.
DTC Logic
INFOID:0000000010051943
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 under the following conditions:
-
CVT selector lever is in the P or N position.
-
Do not depress brake pedal.
2. Check “Self Diagnostic Result” with CONSULT.
Is DTC detected?
YES
>> Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010051944
1.
REPLACE BCM
1. Replace BCM. Refer to
BCS-79, "Removal and Installation"
.
2. Perform initialization with CONSULT.
For initialization, refer to CONSULT Immobilizer mode and follow the on-screen instructions.
Does the engine start?
YES
>> BCM is malfunctioning.
• Replace BCM. Refer to
BCS-79, "Removal and Installation"
.
• Perform initialization again.
NO
>> ECM is malfunctioning.
• Replace ECM.
• Perform ECM re-communicating function.
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2193
CHAIN OF ECM-
IMMU
Inactive communication between ECM and BCM.
• Harness or connectors
(The CAN communication line is
open or shorted)
• BCM
• ECM
B2555 STOP LAMP
SEC-43
< DTC/CIRCUIT DIAGNOSIS >
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B2555 STOP LAMP
Description
INFOID:0000000010051945
BCM detects the stop lamp status and confirms the stop lamp switch ON/OFF status. BCM confirms the
engine start condition according to the stop lamp switch ON/OFF status.
DTC Logic
INFOID:0000000010051946
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Depress the brake pedal and wait for at least 1 second.
2. Check “Self Diagnostic Result” with CONSULT.
Is DTC detected?
YES
>> Refer to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000010051947
Regarding Wiring Diagram information, refer to
.
1.
CHECK STOP LAMP SWITCH INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect BCM harness connector.
3. Check voltage between BCM harness connector M18 terminal
26 and ground.
Is the inspection result normal?
YES
>> Stop lamp switch is OK.
NO
>> GO TO 2
2.
CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Disconnect stop lamp switch harness connector.
DTC No.
Trouble diagno-
sis name
DTC detecting condition
Possible cause
B2555
STOP LAMP
BCM makes a comparison between the
upper voltage and lower voltage of stop
lamp switch. It judges from their values to
detect the malfunctioning circuit.
• Harness or connectors
(stop lamp switch circuit is open or shorted)
• Stop lamp switch
• Fuse
BCM
Ground
Stop lamp
switch position
Voltage [V]
Connector
Terminal
M18
26
Ground
Depressed
Battery volt-
age
Released
0
ALKIA0437ZZ
SEC-44
< DTC/CIRCUIT DIAGNOSIS >
B2555 STOP LAMP
2. Check voltage between stop lamp harness connector E38 termi-
nal 3 and ground.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Check harness for open or short between stop lamp
switch and fuse.
3.
CHECK STOP LAMP SWITCH CIRCUIT
1. Check continuity between stop lamp switch harness connector
E38 (A) terminal 4 and BCM harness connector M18 (B) termi-
nal 26.
2. Check continuity between BCM harness connector M18 terminal
26 and ground.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Repair harness or connector.
4.
CHECK STOP LAMP SWITCH
SEC-44, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 5
NO
>> Replace stop lamp switch.
5.
CHECK INTERMITTENT INCIDENT
GI-41, "Intermittent Incident"
>> Inspection End.
Component Inspection
INFOID:0000000010051948
1.
CHECK STOP LAMP SWITCH
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
Stop lamp switch
Ground
Voltage [V]
Connector
Terminal
E38
3
Ground
Battery voltage
ALDIA0024ZZ
Stop lamp switch
BCM
Continuity
Connector
Terminal
Connector
Terminal
A: E38
4
B: M18
26
Yes
AWDIA0599ZZ
BCM
Ground
Continuity
Connector
Terminal
M18
26
Ground
No
AWDIA0090ZZ
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