Nissan Sentra manuals

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.
  • Harness or connector
  • Brake fluid level switch

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

  1. Turn ignition switch off.

  2. Disconnect combination meter and brake fluid level switch connectors.

  3. 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

  1. Check continuity between combination meter connector m24 terminal 11 and brake fluid level switch connector e40 terminal 1.


  1. Check continuity between combination meter connector and ground.

Is the inspection result normal?


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?


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

  1. Turn ignition switch off.

  2. Disconnect brake fluid level switch connector.

  3. Check continuity between brake fluid level switch terminals 1 and 2.


Is the inspection result normal?


Is the inspection result normal? Yes >> inspection end.

No >> replace brake fluid level switch. Refer to br-32, "exploded view".

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Component parts
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