Nissan Sentra Service Manual: C1155 BR Fluid level low
DTC Logic
Dtc detection logic
| Dtc | Display item | Malfunction detected condition | Possible cause |
| C1155 | C1155 br fluid level low | Brake fluid level is low or communication line between the abs actuator and electric unit (control unit) and brake fluid level switch is open or shorted. |
|
Dtc confirmation procedure
1.Check self-diagnosis results
Check the self-diagnosis results.
Self-diagnosis results
Br fluid level low
Is above displayed on the self-diagnosis display? Yes >> proceed to diagnosis procedure. Refer to brc-83, "diagnosis procedure".
No >> inspection end.
Diagnosis Procedure
Regarding wiring diagram information, refer to brc-44, "wiring diagram".
Note:
Check brake fluid level in brake reservoir tank before starting inspection.
1.Connector inspection
-
Turn ignition switch off.
-
Disconnect combination meter and brake fluid level switch connectors.
-
Check connectors and terminals for deformation, disconnection, looseness or damage.
Is the inspection result normal? Yes >> go to 2.
No >> repair or replace as necessary.
2.Check brake fluid level switch
Perform the brake fluid level switch component inspection. Refer to brc-84, "component inspection".
Is the inspection result normal? Yes >> go to 3.
No >> replace brake fluid level switch. Refer to br-32, "exploded view".
3.Check brake fluid level switch harness
-
Check continuity between combination meter connector m24 terminal 11 and brake fluid level switch connector e40 terminal 1.
-
Check continuity between combination meter connector and ground.
Is the inspection result normal? Yes >> go to 4.
No >> repair or replace malfunctioning components.
4.Check brake fluid level switch ground circuit
Check continuity between brake fluid level switch connector e40 terminal 2 and ground.
Is the inspection result normal? Yes >> replace combination meter. Refer to mwi-77, "removal and installation" no >> repair or replace malfunctioning components.
Component Inspection
1.Check brake fluid level switch
-
Turn ignition switch off.
-
Disconnect brake fluid level switch connector.
-
Check continuity between brake fluid level switch terminals 1 and 2.
Is the inspection result normal? Yes >> inspection end.
No >> replace brake fluid level switch. Refer to br-32, "exploded view".
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DTC Inspection Priority Chart
If some DTCs are displayed at the same time, perform inspections one by one
based on the following priority
chart.
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