Nissan Quest E52. Manual - part 249

C1155 BRAKE FLUID LEVEL SWITCH

BRC-89

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

C1155 BRAKE FLUID LEVEL SWITCH

DTC Logic

INFOID:0000000009651407

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

CHECK DTC DETECTION

With CONSULT

1.

Turn the ignition switch OFF to ON.

2.

Perform self-diagnosis for “ABS”.

Is DTC “C1155” detected?

YES

>> Proceed to 

BRC-89, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009651408

1.

CHECK BRAKE FLUID LEVEL

1.

Turn the ignition switch OFF.

2.

Check brake fluid level. Refer to 

BR-10, "Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Refill brake fluid. Refer to 

BR-10, "Refilling"

. GO TO 2.

2.

PERFORM SELF-DIAGNOSIS (1)

With CONSULT

1.

Erase self-diagnosis result for “ABS”.

2.

Turn the ignition switch OFF, and wait 10 seconds or more.

3.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

4.

Perform self-diagnosis for “ABS”.

Is DTC “C1155” detected?

YES

>> GO TO 3.

NO

>> INSPECTION END

3.

CHECK BRAKE FLUID LEVEL SWITCH

Check brake fluids level switch. Refer to 

BRC-91, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace reservoir tank. Refer to 

BR-27, "Removal and Installation"

. GO TO 4.

4.

PERFORM SELF-DIAGNOSIS (2)

DTC

Display Item

Malfunction detected condition

Possible causes

C1155

BR FLUID LEVEL LOW

• When brake fluid level low signal is detected.
• When an open circuit is detected in brake fluid level 

switch circuit.

• When an short circuit is detected in brake fluid level 

switch circuit.

• Harness or connector
• ABS actuator and electric unit 

(control unit)

• Brake fluid level switch
• Combination meter

BRC-90

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C1155 BRAKE FLUID LEVEL SWITCH

With CONSULT

1.

Erase self-diagnosis result for “ABS”.

2.

Turn the ignition switch OFF, and wait 10 seconds or more.

3.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

4.

Perform self-diagnosis for “ABS”.

Is DTC “C1155” detected?

YES

>> INSPECTION END

NO

>> GO TO 5.

5.

CHECK CONNECTOR AND TERMINAL

1.

Turn the ignition switch OFF.

2.

Disconnect ABS actuator and electric unit (control unit) harness connector.

3.

Check ABS actuator and electric unit (control unit) harness connector for disconnection or looseness.

4.

Check ABS actuator and electric unit (control unit) pin terminals for damage or loose connection with har-
ness connector.

5.

Disconnect brake fluid level switch harness connector.

6.

Check brake fluid level switch harness connector for disconnection or looseness.

7.

Check brake fluid level switch pin terminals for damage or loose connection with harness connector.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace error-detected parts. GO TO 6.

6.

PERFORM SELF-DIAGNOSIS (3)

With CONSULT

1.

Connect brake fluid level switch harness connector.

2.

Connect combination meter harness connector.

3.

Erase self-diagnosis result for “ABS”.

4.

Turn the ignition switch OFF, and wait 10 seconds or more.

5.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

6.

Perform self-diagnosis for “ABS”.

Is DTC “C1155” detected?

YES

>> INSPECTION END

NO

>> GO TO 7.

7.

CHECK BRAKE FLUID LEVEL SWITCH HARNESS

1.

Turn the ignition switch OFF.

2.

Disconnect brake fluid level switch harness connector.

3.

Disconnect combination meter harness connector.

4.

Disconnect ABS actuator and electric unit (control unit) harness connector.

5.

Check continuity between brake fluid level switch harness connector and combination meter harness con-
nector.

6.

Check continuity between brake fluid level switch harness connector and ABS actuator and electric unit
(control unit) harness connector.

Brake fluid level switch

Combination meter

Continuity

Connector

Terminal

Connector

Terminal

E37

1

M34

27

Existed

Brake fluid level switch

ABS actuator and electric 

unit (control unit)

Continuity

Connector

Terminal

Connector

Terminal

E37

1

E36

7

Existed

C1155 BRAKE FLUID LEVEL SWITCH

BRC-91

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

7.

Check continuity between brake fluid level switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace error-detected parts. GO TO 8.

8.

CHECK BRAKE FLUID LEVEL SWITCH GROUND

Check continuity between brake fluid level switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Repair or replace error-detected parts. GO TO 9.

9.

CHECK COMBINATION METER

Check combination meter. Refer to 

MWI-35, "CONSULT Function"

.

Is the inspection result normal?

YES

>> Replace ABS actuator and electric unit (control unit). Refer to 

BRC-123, "Removal and Installa-

tion"

.

NO

>> Repair or replace combination meter. Refer to 

MWI-93, "Removal and Installation"

.

Component Inspection

INFOID:0000000009651409

1.

CHECK BRAKE FLUID LEVEL SWITCH

1.

Turn the ignition switch OFF.

2.

Disconnect brake fluid level switch harness connector.

3.

Check continuity between terminals of brake fluid level switch.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace reservoir tank. Refer to 

BR-27, "Removal and Installation"

.

Brake fluid level switch

—

Continuity

Connector

Terminal

E37

1

Ground

Not existed

Brake fluid level switch

—

Continuity

Connector

Terminal

E37

2

Ground

Existed

Brake fluid level switch

Condition

Continuity

Terminal

1 – 2

When brake fluid level in reservoir tank is within the specified level.

Not existed

When brake fluid level in reservoir tank is less than the specified 
level.

Existed

BRC-92

< DTC/CIRCUIT DIAGNOSIS >

[WITH VDC]

C1161 INCOMPLETE SIDE G SENSOR CALIBRATION

C1161 INCOMPLETE SIDE G SENSOR CALIBRATION

DTC Logic

INFOID:0000000009651410

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

CHECK DTC DETECTION

With CONSULT

1.

Turn the ignition switch OFF to ON.

2.

Perform self-diagnosis for “ABS”.

Is DTC “C1161” detected?

YES

>> Proceed to 

BRC-92, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009651411

1.

CHECK YAW RATE/SIDE G SENSOR

Replace ABS actuator and electric unit (control unit) even if other display than “C1161” is displayed in self-
diagnosis for “ABS”.

>> Replace ABS actuator and electric unit (control unit). Refer to 

BRC-123, "Removal and Installa-

tion"

.

DTC

Display item

Malfunction detected condition

Possible cause

C1161

SIDE G SEN SET

When there is an internal malfunction in the ABS actuator 
and electric unit (control unit).

ABS actuator and electric unit 
(control unit)