Nissan Altima HL32 Hybrid. Manual - part 131

C1246, C1281, C1364

BRC-89

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connector.

2.

READ VALUE OF CONSULT-III (MASTER CYLINDER PRESSURE SENSOR)

1. Reconnect the brake actuator connector.

2. Connect the pedal effort gauge.

3. Connect the CONSULT-III.

4. Turn the ignition switch ON.

5. Select the “DATA MONITOR” on the CONSULT-III.

ABS/VDC

6. Check the output value of the master cylinder pressure snesor at braking.

NOTE:

Output voltage must be proportional to the degree of pedal depression. There should not be a big differ-

ence between outputs of sensor 1 and sensor 2.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace brake actuator assembly.

3.

READ VALUE OF CONSULT-III (WHEEL CYLINDER PRESSURE SENSOR)

1. Turn the ignition switch OFF.

2. Turn the ignition switch ON.

3. Select the “DATA MONITOR” on the CONSULT-III.

ABS/VDC

E60

36

E91

12

—

Always

Below 1 

Ω

E60

36

—

—

Ground

Always

10 k

Ω or higher

E61

65

E91

5

—

Always

Below 1 

Ω

E61

65

—

—

Ground

Always

10 k

Ω or higher

E61

83

E91

7

—

Always

Below 1 

Ω

E61

83

—

—

Ground

Always

10 k

Ω or higher

E61

52

E91

4

—

Always

Below 1 

Ω

E61

52

—

—

Ground

Always

10 k

Ω or higher

E61

77

E91

8

—

Always

Below 1 

Ω

E61

77

—

—

Ground

Always

10 k

Ω or higher

E61

53

E91

16

—

Always

Below 1 

Ω

E61

53

—

—

Ground

Always

10 k

Ω or higher

E61

54

E91

6

—

Always

Below 1 

Ω

E61

54

—

—

Ground

Always

10 k

Ω or higher

Brake ECU

Brake actuator

—

Condition

Specified condition

Connector

Terminal

Connector

Terminal

Tester display

Measurement item/ Range

Normal condition

MC SEN COMP 1

Master cylinder pressure snesor 
1 reading/ min: 0 V, max: 5 V

When brake pedal is re-

leased: 0.3 to 0.9 V

MC SEN COMP 2

Master cylinder pressure snesor 
2 reading/ min: 0 V, max: 5 V

When brake pedal is re-

leased: 0.3 to 0.9 V

Tester display

Measurement item/ Range

Normal condition

FR WC 

PRESS

FR wheel cylinder pressure sensor/ 
min: 0 V, max: 5 V

When brake pedal is re-

leased: 0.3 to 0.9 V

FL WC 

PRESS

FL wheel cylinder pressure sensor/ 
min: 0 V, max: 5 V

When brake pedal is re-

leased: 0.3 to 0.9 V

BRC-90

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

C1246, C1281, C1364

4. Check the output value of the wheel cylinder pressure sensor at each fluid pressure during the Electroni-

cally Controlled Brake control.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace brake actuator assembly.

4.

RECONFIRM DTC

1. Turn the ignition switch OFF.

2. Clear the DTC.

3. Perform the road and braking test.

4. Check if the same DTC is recorded.

Result

A

>> Check for intermittent problems (symptom simulation).

B

>> Replace brake ECU.

Special Repair Requirement

INFOID:0000000004212670

1.

ZERO ADJUSTMENT FOR EACH SENSOR AND OFFSET LEANING FOR LINEAR SOLENOID VALVE

After erasing brake ECU memories, perform zero adjustment of following sensors and initialization of linear

solenoid valve.

• Steering angle sensor: 

BRC-9, "PERFORM ZERO POINT OF STEERING ANGLE SENSOR : Description"

.

• Yaw rate/side/decel G sensor: 

BRC-8, "PERFORM ZERO POINT OF YAW RATE/SIDE/DECEL G SENSOR

: Description"

.

• Brake stroke sensor: 

BRC-9, "PERFORM ADJUSTMENT OF STROKE SENSOR : Description"

.

• Linear solenoid valve: 

BRC-7, "PERFORM INITIALIZATION OF LINEAR SOLENOID VALVE AND CALI-

BRATION : Description"

.

>> END

RR WC 
PRESS

RR wheel cylinder pressure sensor/ 
min: 0 V, max: 5 V

When brake pedal is re-

leased: 0.3 to 0.9 V

RL WC 

PRESS

RL wheel cylinder pressure sensor/ 
min: 0 V, max: 5 V

When brake pedal is re-

leased: 0.3 to 0.9 V

Tester display

Measurement item/ Range

Normal condition

Condition

Front wheel

Rear wheel

When fully depressing the brake pedal 

with the vehicle stopped.

2.89 

±0.15 V

1.32 

±0.15 V

Condition

Proceed to

DTCs (C1246 and/or C1364) are not output.

A

DTCs (C1246 and/or C1364) are output.

B

C1247, C1346, C1392

BRC-91

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

C1247, C1346, C1392

Description

INFOID:0000000004212671

The stroke sensor inputs the pedal stroke into the brake ECU.

DTC C1346 can be deleted when the brake stroke sensor sends a stroke sensor signal or the Test Mode

ends. DTC C1346 is output only in the Test Mode.

DTC Logic

INFOID:0000000004212672

Diagnosis Procedure

INFOID:0000000004212673

CAUTION:

When replacing the brake ECU or brake stroke sensor, perform initialization of linear solenoid valve

and calibration.

DTC

INF code

Display item

DTC detection condition

Possible cause

C1247

171

STROKE SENSOR

Sensor power source voltage (VCSK) is 3.6 V 
or less or 4.95 V or more for at least 1.2 sec-
onds.

• Brake stroke sensor
• Brake stroke sensor 

power supply

• Brake  ECU

172

Ratio of sensor output voltage 1 (SKS1) to 
sensor power source voltage (VCSK) is less 
than 3% or 97% or more for at least 1.2 sec-
onds.

• Brake stroke sensor
• Brake stroke sensor 

circuit

173

Ratio of sensor output voltage 2 (SKS2) to 
sensor power source voltage (VCSK) is less 
than 3% or 97% or more for at least 1.2 sec-
onds.

174

Sensor output 1 (SKS1) calculation value be-
comes 20 mm or more for at least 1.2 seconds 
at an interval of 0.006 seconds (changes due 
to interference).

175

Sensor output 2 (SKS2) calculation value be-
comes 20 mm or more for at least 1.2 seconds 
at an interval of 0.006 seconds (changes due 
to interference).

176

Zero point stored value (ratio to power source 
voltage) or sensor output 1 (SKS1) is 0.46 or 
more or 0.03 or less.

• Brake stroke sensor
• Brake stroke sensor 

circuit

• Brake  ECU

177

Zero point stored value (ratio to power source 
voltage) or sensor output 2 (SKS2) is 0.97 or 
more or 0.48 or less.

179

When either of the following is detected:
1.

Sum of SKS1/VCSK and SKS2/VCSK is 
1.155 or more or 0.845 or less for at least 
1 second.

2.

Difference between sensor output 1 
(SKS1) and sensor output 2 (SKS2) is 
excessively large for at least 0.2 sec-
onds.

• Brake stroke sensor 

zero point calibration 
undone (initialization of 
linear solenoid valve 
and calibration un-
done)

• Brake  ECU

C1392

—

STROKE SEN SET

Zero point calibration of stroke snesor is unfin-
ished.

• Brake stroke sensor 

zero point calibration 
undone (initialization of 
linear solenoid valve 
and calibration un-
done)

• Brake  ECU

C1346

—

STROKE SEN CALIB

Detected only during Test Mode.

• Brake stroke sensor

BRC-92

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

C1247, C1346, C1392

1.

CHECK BRAKE PEDAL

1. Check that the brake pedal and the brake stroke sensor are properly installed and that the pedal can be

operated normally.

2. Check the brake pedal height.

NOTE:

• The brake pedal is securely installed.

• The pedal height is within the specified range.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Adjust brake pedal.

2.

READ VALUE OF CONSULT-III (BRAKE STROKE SENSOR)

1. Connect the CONSULT-III.

2. Turn the ignition switch ON.

3. Select the “DATA MONITOR” on the CONSULT-III.

ABS/VDC:

4. Read the brake stroke sensor voltage value on the CONSULT-III screen.

NOTE:

The normal condition value is displayed on the CONSULT-III.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Adjust brake stroke sensor.

3.

PERFORM INITIALIZATION OF LINEAR SOLENOID VALVE AND CALIBRATION

Perform initialization of linear solenoid valve and calibration. Refer to 

BRC-7, "PERFORM INITIALIZATION

OF LINEAR SOLENOID VALVE AND CALIBRATION : Description"

.

>> GO TO 4.

4.

RECONFIRM DTC

1. Turn the ignition switch OFF.

2. Clear the DTC.

3. Perform the road and braking test.

4. Check if the same DTC is recorded.

Result

A

>> GO  TO  5.

B

>> INSPECTION END

5.

CHECK HARNESS AND CONNECTOR (BRAKE ECU – BRAKE STROKE SENSOR)

1. Turn ignition switch OFF.

2. Disconnect the brake ECU connector and the brake stroke sensor connector.

Tester display

Measurement item/ Range

Normal condition

STRK SEN 1

Stroke sensor/ min: 0 V, max: 5 V

When brake pedal is re-

leased: 0.7 to 1.3 V

STRK SEN 2

Stroke sensor 2/ min: 0 V, max: 5 V

When brake pedal is re-

leased: 3.7 to 4.3 V

Condition

Proceed to

DTCs (C1247 and/or C1392) are output.

A

DTCs (C1247 and/or C1392) are not output.

B