Nissan Sentra B18 (2020-2025) Service Manual: High Pressure Fuel Pump Relay
Component Inspection
-
CHECK HIGH PRESSURE FUEL PUMP RELAY
-
Turn ignition switch OFF.
-
Remove high pressure fuel pump relay. Refer to Component Parts Location.
-
Check the continuity between high pressure fuel pump relay terminals.
High pressure fuel pump relay
Condition
Continuity
+
−
Terminal
1
2
12 V direct current supply between terminals 3 and 4
Existed
No current supply
Not existed
Is the inspection result normal?
YES >>INSPECTION END
NO >>Replace high pressure fuel pump relay. Refer to Component Parts Location.
-
High Pressure Fuel Pump
Component Function Check
Component Function Check
CHECK HIGH PRESSURE FUEL PUMP
FUNCTION
With CONSULT
Start engine.
...
Ho2s2
Component Inspection
Component Inspection
INSPECTION START
Will CONSULT be used?
YES >>
GO TO
2.
NO >>
GO TO
3.
...
Other materials:
Fail-Safe
Fail-safe
FAIL-SAFE CONTROL BY DTC
BCM performs fail-safe control when any DTC are
detected.
Display contents of CONSULT
Fail-safe
B2C21-23: Seat belt buc ...
Diagnosis Procedure
Diagnosis Procedure
CHECK FUSE
Check that the following fuse is not blown:
Terminal No.
...
P0603 ECM
DTC Logic
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0603
ECM BACK UP CIRCUIT
[Internal control module keep
alive memory (KAM) error]
Malfunction in the internal back up RAM o ...
