Nissan Sentra B18 (2020-2025) Service Manual: B2c20-23 Starter Cut Relay
Dtc Description
DTC Description
DTC DETECTION LOGIC
|
DTC No. |
CONSULT screen items (Trouble diagnosis content) |
DTC detecting condition |
|
|---|---|---|---|
|
B2C20-23 |
Starter cut relay (Starter cut relay) |
Diagnosis condition |
Ignition switch ON |
|
Signal (terminal) |
|
||
|
Threshold |
When the starter cut relay status signal transmitted from IPDM E/R via CAN communication is OFF after even though BCM is operating the starter cut relay ON output. |
||
|
Diagnosis delay time |
1 second or less |
||
POSSIBLE CAUSE
-
Harness or connectors
(The CAN communication line is open or shorted)
-
Harness or connectors
(Starter cut relay circuit is short to ground or open)
-
Starter cut relay
FAIL-SAFE
—
Confirmation Procedure
Confirmation Procedure
-
PERFORM DTC CONFIRMATION PROCEDURE
-
-
Ignition switch ON under the following conditions and wait 1 second or more:
-
CVT models
-
Selector lever: In the P position.
-
Brake pedal: Depressed.
-
-
M/T models
-
Shift lever: In the neutral position.
-
Clutch pedal or Brake pedal: Depressed.
-
-
-
CONSULTSelect “Self Diagnostic Result” mode of “BCM”.
-
Is the DTC detected?
YES>>Refer to DTC Diagnosis Procedure.
NO>>To check malfunction symptom before repair: Refer to Intermittent Incident.
NO>>Confirmation after repair: Inspection End.
-
Dtc Diagnosis Procedure
DTC Diagnosis Procedure
-
CHECK STARTER CUT RELAY INPUT SIGNAL
-
Check voltage between BCM harness connector and ground.
(+)
(-)
Condition
Voltage
(Approx.)
BCM
Connector
Terminal
M142
123
Ground
At engine cranking
0 V
Other than above
Battery voltage
Is the inspection result normal?
YES >>GO TO 4.
NO >>GO TO 2.
-
-
CHECK STARTER CUT RELAY INPUT SIGNAL CIRCUIT
-
-
Ignition switch OFF.
-
Disconnect BCM connector and starter cut relay connector.
-
Check continuity between BCM harness connector and starter cut relay harness connector.
BCM
Starter cut relay
Continuity
Connector
Terminal
Connector
Terminal
M142
123
H-2
2
Yes
-
Check continuity between BCM harness connector and ground.
BCM
—
Continuity
Connector
Terminal
M142
123
Ground
No
-
Is the inspection result normal?
YES >>GO TO 3.
NO >>Repair or replace harness.
-
-
CHECK FUSIBLE LINK
-
Check that the following fusible link is not blown (open):
Signal name
Fusible link No.
Capacity
Battery power supply
M
30 A
Is the fusible link blown (open)?
YES >>Replace the blown (open) fusible link after repairing the affected circuit if a fusible link is blown (open).
NO >>GO TO 6.
-
-
CHECK STARTER CUT RELAY OUTPUT SIGNAL
-
Check voltage between IPDM E/R harness connector and ground.
(+)
(-)
Condition
Voltage
(Approx.)
IPDM E/R
Connector
Terminal
F97
86
Ground
Other than at engine cranking
0 - 1 V
At engine cranking
Battery voltage
Is the inspection result normal?
YES >>Inspection End.
NO >>GO TO 5.
-
-
CHECK STARTER CUT RELAY OUTPUT SIGNAL CIRCUIT
-
-
Ignition switch OFF.
-
Disconnect IPDM E/R connector and starter cut relay connector.
-
Check continuity between IPDM E/R harness connector and starter cut relay harness connector.
IPDM E/R
Starter cut relay
Continuity
Connector
Terminal
Connector
Terminal
F97
86
H-2
5
Yes
-
Check continuity between IPDM E/R harness connector and ground.
IPDM E/R
—
Continuity
Connector
Terminal
F97
86
Ground
No
-
Is the inspection result normal?
YES >>GO TO 6.
NO >>Repair or replace harness.
-
-
CHECK STARTER CUT RELAY
-
Check starter cut relay. Refer to Component Inspection.
Is the inspection result normal?
YES >>Inspection End.
NO >>Replace starter cut relay.
-
Other materials:
Steering System. Unit Removal and Installation. Steering Gear and Linkage
Steering Gear and Linkage
Exploded View
Exploded View
REMOVAL
1.
Steering gear and linkage
assembly
2.
Front su ...
Hazard warning flasher switch
Press the hazard warning flasher switch to alert other drivers when you must
stop or park your Nissan Sentra under emergency conditions. When activated, all
turn signal lights will flash simultaneously to increase vehicle visibility and
warn surrounding traffic.
WARNING
If stopping du ...
P1534 Cruise Control
Dtc Description
DTC Description
DTC DETECTION LOGIC
DTC
CONSULT screen terms
(Trouble diagnosis
content)
DTC detection
condition
...