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Nissan Note E12. Manual - part 232

P1564 ASCD STEERING SWITCH

EC-267

< DTC/CIRCUIT DIAGNOSIS >

[HR16DE]

2. Also check harness for short to ground and short to power.
Is the inspection result normal?

YES

>> GO TO 7.

>> GO TO 6.

DETECT MALFUNCTIONING PART

Check the following.

• Combination switch (spiral cable)

• Harness for open and short between ECM and combination switch

>> Repair open circuit, short to ground or short to power in harness or connectors.

CHECK ASCD STEERING SWITCH

Refer to

EC-267, "Component Inspection"

Is the inspection result normal?

YES

>> GO TO 8.

>> Replace ASCD steering switch.

CHECK INTERMITTENT INCIDENT

Refer to

GI-41, "Intermittent Incident"

>> INSPECTION END

Component Inspection

INFOID:0000000009418252

CHECK ASCD STEERING SWITCH

Check resistance between combination switch (spiral cable) harness connector terminals under the following

conditions.

Is the inspection result normal?

YES

>> INSPECTION END

>> Replace ASCD steering switch.

Combination switch

ECM

Continuity

Connector

Terminal

Connector

Terminal

M88

E16

Existed

Combination switch

Condition

Resistance (

Ω)

Connector

Terminals

M88

13 and 16

MAIN switch: Pressed

Approx. 0

CANCEL switch: Pressed

Approx. 250

COAST/SET switch: Pressed

Approx. 660

ACCEL/RES switch: Pressed

Approx. 1,480

All ASCD steering switches: Released

Approx. 4,000

EC-268

< DTC/CIRCUIT DIAGNOSIS >

[HR16DE]

P1572 ASCD BRAKE SWITCH

P1572 ASCD BRAKE SWITCH

DTC Logic

INFOID:0000000009418253

DTC DETECTION LOGIC

NOTE:

• If DTC P1572 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer

EC-249, "DTC Logic"

• This self-diagnosis has the one trip detection logic. When malfunction A is detected, DTC is not

stored in ECM memory. And in that case, 1st trip DTC and 1st trip freeze frame data are displayed.

1st trip DTC is erased when ignition switch is turned OFF. And even when malfunction A is detected

in two consecutive trips, DTC is not stored in ECM memory.

DTC CONFIRMATION PROCEDURE

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

NOTE:

The procedure for malfunction B is not described. It takes an extremely long time to complete the procedure

for malfunction B. By performing the procedure for malfunction A, the condition that causes malfunction B can

be detected.

>> GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE-I

1. Start engine (ESP switch OFF).

2. Select “ENGINE” using CONSULT.

3. Select “DATA MONITOR” mode.

4. Press MAIN switch and make sure that CRUISE lamp illuminates.

5. Drive the vehicle for at least 5 consecutive seconds under the following conditions.

CAUTION:

Always drive vehicle at a safe speed.

NOTE:

This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle.

If a road test is expected to be easier, it is unnecessary to lift the vehicle.

6. Check DTC.
Is DTC detected?

YES

>> Go to

EC-269, "Diagnosis Procedure"

>> GO TO 3.

DTC No. Trouble diagnosis name

DTC detecting condition

Possible cause

P1572

ASCD brake switch

When the vehicle speed is above
30 km/h (19 MPH), ON signals
from the stop lamp switch and the
brake pedal position switch are
sent to the ECM at the same time.

• Harness or connectors

(The stop lamp switch circuit is shorted.)

• Harness or connectors

(The brake pedal position switch circuit is shorted.)

• Stop lamp switch
• Brake pedal position switch
• Incorrect stop lamp switch installation
• Incorrect brake pedal position switch installation
• ECM

Brake pedal position switch signal
is not sent to ECM for extremely
long time while the vehicle is being
driven.

VHCL SPEED SE

More than 30 km/h (19 mph)

Selector lever

Suitable position

P1572 ASCD BRAKE SWITCH

EC-269

< DTC/CIRCUIT DIAGNOSIS >

[HR16DE]

PERFORM DTC CONFIRMATION PROCEDURE-II

1. Drive the vehicle for at least 5 consecutive seconds under the following conditions.

CAUTION:

Always drive vehicle at a safe speed.

NOTE:

This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle.

If a road test is expected to be easier, it is unnecessary to lift the vehicle.

2. Check DTC.
Is DTC detected?

YES

>> Go to

EC-269, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009418254

CHECK OVERALL FUNCTION-I

With CONSULT

1. Turn ignition switch ON.

2. Select “ENGINE” using CONSULT.

3. Select “BRAKE SW1” in “DATA MONITOR” mode.

4. Check “BRAKE SW1” indication under the following conditions.

Without CONSULT

1. Turn ignition switch ON.

2. Check the voltage between ECM harness connector terminals as follows.

Is the inspection result normal?

YES

>> GO TO 2.

>> GO TO 3.

CHECK OVERALL FUNCTION-II

With CONSULT

Select “BRAKE SW2” and check indication under the following conditions.

Without CONSULT

Check the voltage between ECM harness connector terminals under the following conditions.

VHCL SPEED SE

More than 30 km/h (19 mph)

Selector lever

Suitable position

Driving location

Depress the brake pedal for more than 5 seconds so as
not to come off from the above-mentioned vehicle speed.

Monitor item

Condition

Indication

BRAKE SW1

Brake pedal

Slightly depressed

OFF

Fully released

ECM

Condition

Voltage (V)

Connector

–

Terminal

E16

100

(Brake pedal position switch signal)

108

Brake
pedal

Slightly depressed

Approx. 0

Fully released

Battery voltage

Monitor item

Condition

Indication

BRAKE SW2

Brake pedal

Slightly depressed

Fully released

OFF

EC-270

< DTC/CIRCUIT DIAGNOSIS >

[HR16DE]

P1572 ASCD BRAKE SWITCH

Is the inspection result normal?

YES

>> GO TO 11.

>> GO TO 7.

CHECK BRAKE PEDAL POSITION SWITCH POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect brake pedal position switch harness connector.

3. Turn ignition switch ON.

4. Check the voltage between brake pedal position switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

>> GO TO 4.

DETECT MALFUNCTIONING PART

Check the following.

• Harness connectors E7, M69

• 10 A fuse (No. 5)

• Harness for open or short between brake pedal position switch and fuse

>> Repair open circuit, short to ground or short to power in harness or connectors.

CHECK BRAKE PEDAL POSITION SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between brake pedal position switch harness connector and ECM harness connec-

tor.

4. Also check harness for short to ground and short to power.
Is the inspection result normal?

YES

>> GO TO 6.

>> Repair open circuit, short to ground or short to power in harness or connectors.

CHECK BRAKE PEDAL POSITION SWITCH

Refer to

EC-271, "Component Inspection (Brake Pedal Position Switch)"

Is the inspection result normal?

YES

>> GO TO 11.

>> Replace brake pedal position switch. Refer to

BR-19, "Exploded View"

CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect stop lamp switch harness connector.

ECM

Condition

Voltage (V)

Connector

–

Terminal

E16

(Stop lamp switch signal)

108

Brake
pedal

Slightly depressed

Battery voltage

Fully released

Approx. 0

Brake pedal position switch

Ground

Voltage

Connector

Terminal

E36

Ground

Battery voltage

Brake pedal position switch

ECM

Continuity

Connector

Terminal

Connector

Terminal

E36 2

E16

100

Existed

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