Infiniti EX35. Manual — part 1289
SEC-52
< COMPONENT DIAGNOSIS >
[INTELLIGENT KEY SYSTEM]
B2555 STOP LAMP
B2555 STOP LAMP
Description
INFOID:0000000003586531
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:0000000003586532
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-III.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003586533
1.
CHECK STOP LAMP SWITCH INPUT SIGNAL
1.
Turn ignition switch OFF.
2.
Disconnect BCM connector M123.
3.
Check voltage between BCM harness connector and ground.
Is the inspection normal?
YES
>> GO TO 2.
NO
>>
Check the following.
• 10A fuse [No. 7, located in the fuse block (J/B)]
• Harness for open or short between BCM and fuse.
2.
CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1.
Disconnect stop lamp switch connector.
2.
Check voltage between stop lamp harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Check harness for open or short between stop lamp switch and fuse.
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
(+)
(–)
Voltage (V)
(Approx.)
BCM
Connector
Terminal
M123
116
Ground
Battery voltage
(+)
(–)
Voltage (V)
(Approx.)
Stop lamp switch
Connector
Terminal
E110
1
Ground
Battery voltage
3
B2555 STOP LAMP
SEC-53
< COMPONENT DIAGNOSIS >
[INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
3.
CHECK STOP LAMP SWITCH CIRCUIT
1.
Check continuity between stop lamp switch harness connector and BCM harness connector M123.
2.
Check continuity between stop lamp switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace harness or connector.
4.
CHECK STOP LAMP SWITCH
SEC-53, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace stop lamp switch. Refer to
.
5.
CHECK INTERMITTENT INCIDENT
GI-38, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000003586534
1.
CHECK STOP LAMP SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect stop lamp switch connector.
3.
Check continuity between stop lamp switch terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace stop lamp switch. Refer to
.
Stop lamp switch
BCM
Continuity
Connector
Terminal
Connector
Terminal
E110
4
M123
118
Existed
Stop lamp switch
Ground
Continuity
Connector
Terminal
E110
4
Not existed
Stop lamp switch
Condition
Continuity
Terminal
3
4
Brake pedal
Not depressed
Not existed
Depressed
Existed
SEC-54
< COMPONENT DIAGNOSIS >
[INTELLIGENT KEY SYSTEM]
B2556 PUSH-BUTTON IGNITION SWITCH
B2556 PUSH-BUTTON IGNITION SWITCH
Description
INFOID:0000000003586535
The switch that changes the power supply position. BCM maintains the power supply position status. BCM
changes the power supply position with the operation of the push-button ignition switch.
DTC Logic
INFOID:0000000003586536
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start the engine and wait for at least 100 seconds.
2.
Check “Self diagnostic result” with CONSULT-III.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000003586537
1.
CHECK PUSH-BUTTON IGNITION SWITCH INPUT SIGNAL
1.
Turn ignition switch OFF.
2.
Disconnect push-button ignition switch connector.
3.
Check voltage between push-button ignition switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK PUSH-BUTTON IGNITION SWITCH CIRCUIT
1.
Disconnect BCM connector M122 and IPDM E/R connector.
2.
Check continuity between push-button ignition switch harness connector and BCM harness connector.
3.
Check continuity between push-button ignition switch harness connector and ground.
Is the inspection result normal?
YES
>> Replace BCM. Refer to
BCS-84, "Removal and Installation"
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
B2556
PUSH-BUTTON IG-
NITION SWITCH
BCM detects the push-button ignition
switch stuck to ON for 100 seconds or
more
• Harness or connectors
(Push-button ignition switch circuit is shorted.)
• Push-button ignition switch
(+)
(–)
Voltage (V)
(Approx.)
Push-button ignition switch
Connector
Terminal
M50
4
Ground
Battery voltage
Push-button ignition switch
BCM
Continuity
Connector
Terminal
Connector
Terminal
M50
4
M122
89
Existed
Push-button ignition switch
Ground
Continuity
Connector
Terminal
M50
4
Not existed
B2556 PUSH-BUTTON IGNITION SWITCH
SEC-55
< COMPONENT DIAGNOSIS >
[INTELLIGENT KEY SYSTEM]
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
NO
>> Repair or replace harness or connector.
3.
CHECK PUSH-BUTTON IGNITION SWITCH GROUND CIRCUIT
Check continuity between push-button ignition switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace harness or connector.
4.
CHECK PUSH-BUTTON IGNITION SWITCH
SEC-55, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace push-button ignition switch. Refer to
SEC-205, "Removal and Installation"
.
5.
CHECK INTERMITTENT INCIDENT
GI-38, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000003586538
1.
CHECK PUSH-BUTTON IGNITION SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect push-button ignition switch connector.
3.
Check continuity between push-button ignition switch terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace push-button ignition switch. Refer to
SEC-205, "Removal and Installation"
.
Push-button ignition switch
Ground
Continuity
Connector
Terminal
M50
1
Existed
Push-button ignition switch
Condition
Continuity
Terminals
1
4
Pressed
Existed
Not pressed
Not existed
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