Nissan X-Trail 32. Manual - part 1638

PB-78

< DTC/CIRCUIT DIAGNOSIS >

C1BD0 MOTOR

C1BD0 MOTOR

DTC Description

INFOID:0000000010722963

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connector
• Electric parking brake control module

FAIL-SAFE

One side motor is available.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn the 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.

CAUTION:

Be sure to wait for 10 seconds after turning ignition switch OFF or ON.

2.

Push the parking brake switch.

CAUTION:

• Set the select lever in the P position.
• Depress the brake pedal.

3.

Pull the parking brake switch.

4.

Perform self-diagnosis for “EHS/PKB”.

Is DTC “C1BD0” detected?

YES

>> Proceed to 

PB-78, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010722964

1.

CHECK PARKING BRAKE ACTUATOR CIRCUIT

1.

Disconnect the parking brake actuator harness connector.

2.

Disconnect the electric parking brake control module.

3.

Check the continuity between electric parking brake control module harness connector and parking brake
actuator harness connector.

DTC

Display Item

(Trouble diagnosis content)

Malfunction detected condition

C1BD0

MOTOR
(Motor)

• A short circuit is detected in the circuit between electric parking brake control mod-

ule and parking brake actuator.

• A open circuit is detected in the circuit between electric parking brake control mod-

ule and parking brake actuator.

C1BD0 MOTOR

PB-79

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

G

H

I

J

K

L

M

A

B

PB

N

O

P

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts, and GO TO 2.

2.

CHECK ELECTRIC PARKING BRAKE CONTROL MODULE CIRCUIT (1)

1.

Check the continuity between electric parking brake control module harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts, and GO TO 3.

3.

CHECK PARKING BRAKE ACTUATOR CIRCUIT

1.

Check the continuity electric parking brake control module harness connector terminals.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts, and GO TO 4.

4.

CHECK ELECTRIC PARKING BRAKE CONTROL MODULE GROUND CIRCUIT

1.

Disconnect the electric parking brake control module harness connector.

2.

Turn the ignition switch OFF.

3.

Check the continuity between electric parking brake control module harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts, and GO TO 5.

5.

CHECK CONNECTOR AND TERMINAL

Electric parking brake control module

Parking brake actuator

Continuity

Connector

Terminal

Connector

Terminal

M137

14

M128

1

Existed

29

2

12

M129

1

27

2

Electric parking brake control module

—

Continuity

Connector

Terminal

M137

14

Ground

Not existed

29

12

27

Electric parking brake control module

Continuity

Connector

Terminal

M137

14 

−

 22

Not existed

29 

−

 22

12 

−

 22

27 

−

 22

Electric parking brake control module

—

Continuity

Connector

Terminal

M137

28

Ground

Existed

30

PB-80

< DTC/CIRCUIT DIAGNOSIS >

C1BD0 MOTOR

1.

Check the electric parking brake control module harness connector for disconnection or looseness.

2.

Check the electric parking brake control module pin terminals for damage or loose connection with har-
ness connector.

3.

Check the parking brake actuator harness connector for disconnection or looseness.

4.

Check the parking brake actuator pin terminals for damage or loose connection with harness connector.

Is the inspection result normal?

YES

>> GO TO 6.

NO

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

6.

PERFORM SELF-DIAGNOSIS

With CONSULT

1.

Connect the electric parking brake control module harness connector.

2.

Connect the parking brake actuator harness connector.

3.

Turn the ignition switch ON.

4.

Erase self-diagnosis result for “EHS/PKB”.

5.

Repeat the parking brake switch operation (pull and push) five times.

6.

Perform self-diagnosis for “EHS/PKB”.

Is DTC “C1BD0” detected?

YES

>> Replace the electric parking brake control module. Refer to 

PB-153, "Removal and Installation"

.

NO

>> INSPECTION END

C1BD1 PARKING BRAKE SWITCH

PB-81

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

G

H

I

J

K

L

M

A

B

PB

N

O

P

C1BD1 PARKING BRAKE SWITCH

DTC Description

INFOID:0000000010722965

DTC DETECTION LOGIC

POSSIBLE CAUSE

• Harness or connector
• Parking brake switch
• Electric parking brake control module

FAIL-SAFE

• Apply and release by switch are prohibited.
• Automatic apply and release are available.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn the 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.

CAUTION:

Be sure to wait for 10 seconds after turning ignition switch OFF or ON.

2.

Push the parking brake switch.

CAUTION:

• Set the select lever in the P position.
• Depress the brake pedal.

3.

Pull the parking brake switch.

4.

Perform self-diagnosis for “EHS/PKB”.

Is DTC “C1BD1” detected?

YES

>> Proceed to 

PB-81, "Diagnosis Procedure"

.

NO-1

>> To check malfunction symptom before repair: Refer to 

GI-44, "Intermittent Incident"

.

NO-2

>> Confirmation after repair: INSPECTION END

Diagnosis Procedure

INFOID:0000000010722966

1.

CHECK DATA MONITOR

With CONSULT

1.

Turn the ignition switch ON.

2.

Select “EHS/PKB”, “DATA MONITOR” and “PB SW” according to this order. Check that data monitor dis-
plays when parking brake switch is pull, neutral or push. Refer to 

PB-29, "Reference Value"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK PARKING BRAKE SWITCH CIRCUIT (1)

1.

Turn the ignition switch OFF.

2.

Disconnect the parking brake switch harness connector.

3.

Disconnect the electric parking brake control module harness connector.

DTC

Display Item

(Trouble diagnosis content)

Malfunction detected condition

C1BD1

PARKING BRAKE SWITCH
(Parking brake switch)

When malfunction is detected in the parking brake switch (apply side).