SYSTEM DOES NOT OPERATE [PARKING SENSOR]

id0903z4829300

Note

• If there is any vehicle malfunction complaint lodged by a customer, perform FOREWORD [PARKING SENSOR] malfunction diagnosis according to the troubleshooting procedure. (See FOREWORD [PARKING SENSOR].)

With Front Ultrasonic Sensor

Description

SYSTEM DOES NOT OPERATE

•  Buzzer does not sound and the parking sensor indicator does not illuminate even if the parking sensor switch is turned on.

Possible Causes

•  Parking sensor control module power supply malfunction

With i-stop system

―  Open circuit in wiring harness between IGNITION relay and parking sensor control module terminal U

―  Short to ground in wiring harness between IGNITION relay and parking sensor control module terminal U

Without i-stop system

―  Open circuit in wiring harness between IG1 relay and parking sensor control module terminal U

―  Short to ground in wiring harness between IG1 relay and parking sensor control module terminal U

―  C/U IG1 15 A fuse damage, burnt out

•  Parking sensor switch/indicator malfunction

―  Open circuit or short to ground in wiring harness between indicator unit I and parking sensor control module terminal V

―  Open circuit or short to ground in wiring harness between indicator unit H and parking sensor control module terminal S

―  Parking sensor switch/indicator malfunction (parking sensor switch/indicator stuck open)

•  Malfunction in parking sensor control module ground

―  Open circuit in wiring harness between parking sensor control module terminal Q and body ground

―  Ground point lifting or loosening

•  Parking sensor control module malfunction

Diagnostic Procedure

Step

Inspection

Action

1

VERIFY MALFUNCTION SYMPTOM

•  Switch the ignition ON (engine off or on).

•  Turn the parking sensor switch/indicator ON.

•  Does the parking sensor indicator illuminate and does the buzzer sound?

Yes

Did the buzzer sound after the parking sensor indicator illuminated?

•  System is normal.

Buzzer does not sound

•  NO DETECTION SOUND/LOW VOLUME [PARKING SENSOR]
(See NO DETECTION SOUND/LOW VOLUME [PARKING SENSOR].)

Indicator does not illuminate

•  Perform troubleshooting according to the INDICATOR LIGHT DOES NOT ILLUMINATE [PARKING SENSOR].
(See INDICATOR LIGHT DOES NOT ILLUMINATE [PARKING SENSOR].)

No

Go to the next step.

2

INSPECT PARKING SENSOR CONTROL MODULE POWER SUPPLY

•  Measure the voltage at parking sensor control module terminal U.

•  Is the voltage B+?

Yes

Go to the next step.

No

With i-stop

•  Refer to the wiring diagram and verify whether or not there is a mid-connector between IGNITION relay terminal D and parking sensor control module terminal U.

If there is a mid-connector

―  Determine the malfunctioning part by inspecting the mid-connector and the terminal for corrosion, damage, or pin disconnection, and the mid-wiring harness for a open circuit or short to ground.

―  Repair or replace the wiring harness which has a malfunction.

If there is no mid-connector

―  Repair or replace the wiring harness which has a malfunction.

Without i-stop

•  Inspect the C/U IG1 15 A fuse.

If the fuse is burned out:

•  Inspect and repair the wiring harness between the C/U IG1 15 A fuse and parking sensor control module terminal U for a short circuit to the ground system.

If the fuse is not damaged or burned out:

•  Refer to the wiring diagram and verify whether or not there is a mid-connector between IG relay terminal C and parking sensor control module terminal U.

If there is a mid-connector

•  Determine the malfunctioning part by inspecting the mid-connector and the terminal for corrosion, damage, or pin disconnection, and the mid-wiring harness for a open circuit.

•  Repair or replace the wiring harness which has a malfunction.

If there is no mid-connector

•  Repair or replace the wiring harness which has a malfunction.

3

INSPECT PARKING SENSOR CONTROL MODULE GROUND CIRCUIT

•  Switch the ignition off.

•  Disconnect the negative battery cable.
(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].)

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].)

•  Disconnect the parking sensor control module connector.

•  Verify the continuity between connector terminal Q on parking sensor control module vehicle side and body ground.

•  Is there continuity?

Yes

Inspect and repair the ground point for looseness, disengagement, or lifting.

Repair or replace the wiring harness.

No

Go to the next step.

4

INSPECT IF MALFUNCTION CAUSE IS OPEN CIRCUIT IN PARKING SENSOR SWITCH/INDICATOR SIGNAL WIRING HARNESS

•  Disconnect the indicator unit connector.
(See INDICATOR UNIT REMOVAL/INSTALLATION.)

•  Inspect for continuity between the following wiring harnesses:

―  Indicator unit terminal I and parking sensor control module terminal V

―  Indicator unit terminal H and parking sensor control module terminal S

•  Is there continuity?

Yes

Go to the next step.

No

•  Refer to the wiring diagram and verify whether or not there is a mid-connector between the following wiring harnesses:

―  Indicator unit terminal I and parking sensor control module terminal V

―  Indicator unit terminal H and parking sensor control module terminal S

If there is a mid-connector

―  Determine the malfunctioning part by inspecting the mid-connector and the terminal for corrosion, damage, or pin disconnection, and the mid-wiring harness for a open circuit.

―  Repair or replace the wiring harness which has a malfunction.

If there is no mid-connector

―  Repair or replace the wiring harness which has a malfunction.

5

INSPECT IF MALFUNCTION CAUSE IS SHORT TO GROUND IN PARKING SENSOR SWITCH/INDICATOR SIGNAL WIRING HARNESS

•  Inspect for continuity between the following wiring harnesses:

―  Parking sensor control module terminal V and ground

―  Parking sensor control module terminal S and ground

•  Is there continuity?

Yes

•  Refer to the wiring diagram and verify whether or not there is a mid-connector between the following wiring harnesses:

―  Parking sensor control module terminal V and ground

―  Parking sensor control module terminal S and ground

If there is a mid-connector

―  Determine the malfunctioning part by inspecting the mid-connector and the terminal for corrosion, damage, or pin disconnection, and the mid-wiring harness for a short to ground.

―  Repair or replace the wiring harness which has a malfunction.

If there is no mid-connector

―  Repair or replace the wiring harness which has a malfunction.

No

Go to the next step.

6

INSPECT PARKING SENSOR SWITCH/INDICATOR

•  Reconnect all the disconnected connectors.

•  Connect the negative battery cable.
(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].)

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].)

•  Inspect the indicator unit.
(See INDICATOR UNIT INSPECTION.)

•  Is the indicator unit normal?

Yes

Replace the parking sensor control module.

(See PARKING SENSOR CONTROL MODULE REMOVAL/INSTALLATION.)

No

Replace the indicator unit.

(See INDICATOR UNIT REMOVAL/INSTALLATION.)

Note

•  The parking sensor switch/indicator is integrated with the indicator unit.

Step	Inspection	Action
1	VERIFY MALFUNCTION SYMPTOM • Switch the ignition ON (engine off or on). • Turn the parking sensor switch/indicator ON. • Does the parking sensor indicator illuminate and does the buzzer sound?	Yes	Did the buzzer sound after the parking sensor indicator illuminated? • System is normal. Buzzer does not sound • NO DETECTION SOUND/LOW VOLUME [PARKING SENSOR] (See NO DETECTION SOUND/LOW VOLUME [PARKING SENSOR].) Indicator does not illuminate • Perform troubleshooting according to the INDICATOR LIGHT DOES NOT ILLUMINATE [PARKING SENSOR]. (See INDICATOR LIGHT DOES NOT ILLUMINATE [PARKING SENSOR].)
No	Go to the next step.
2	INSPECT PARKING SENSOR CONTROL MODULE POWER SUPPLY • Measure the voltage at parking sensor control module terminal U. • Is the voltage B+?	Yes	Go to the next step.
No	With i-stop • Refer to the wiring diagram and verify whether or not there is a mid-connector between IGNITION relay terminal D and parking sensor control module terminal U. If there is a mid-connector ― Determine the malfunctioning part by inspecting the mid-connector and the terminal for corrosion, damage, or pin disconnection, and the mid-wiring harness for a open circuit or short to ground. ― Repair or replace the wiring harness which has a malfunction. If there is no mid-connector ― Repair or replace the wiring harness which has a malfunction. Without i-stop • Inspect the C/U IG1 15 A fuse. If the fuse is burned out: • Inspect and repair the wiring harness between the C/U IG1 15 A fuse and parking sensor control module terminal U for a short circuit to the ground system. If the fuse is not damaged or burned out: • Refer to the wiring diagram and verify whether or not there is a mid-connector between IG relay terminal C and parking sensor control module terminal U. If there is a mid-connector • Determine the malfunctioning part by inspecting the mid-connector and the terminal for corrosion, damage, or pin disconnection, and the mid-wiring harness for a open circuit. • Repair or replace the wiring harness which has a malfunction. If there is no mid-connector • Repair or replace the wiring harness which has a malfunction.
3	INSPECT PARKING SENSOR CONTROL MODULE GROUND CIRCUIT • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) • Disconnect the parking sensor control module connector. • Verify the continuity between connector terminal Q on parking sensor control module vehicle side and body ground. • Is there continuity?	Yes	Inspect and repair the ground point for looseness, disengagement, or lifting. Repair or replace the wiring harness.
No	Go to the next step.
4	INSPECT IF MALFUNCTION CAUSE IS OPEN CIRCUIT IN PARKING SENSOR SWITCH/INDICATOR SIGNAL WIRING HARNESS • Disconnect the indicator unit connector. (See INDICATOR UNIT REMOVAL/INSTALLATION.) • Inspect for continuity between the following wiring harnesses: ― Indicator unit terminal I and parking sensor control module terminal V ― Indicator unit terminal H and parking sensor control module terminal S • Is there continuity?	Yes	Go to the next step.
No	• Refer to the wiring diagram and verify whether or not there is a mid-connector between the following wiring harnesses: ― Indicator unit terminal I and parking sensor control module terminal V ― Indicator unit terminal H and parking sensor control module terminal S If there is a mid-connector ― Determine the malfunctioning part by inspecting the mid-connector and the terminal for corrosion, damage, or pin disconnection, and the mid-wiring harness for a open circuit. ― Repair or replace the wiring harness which has a malfunction. If there is no mid-connector ― Repair or replace the wiring harness which has a malfunction.
5	INSPECT IF MALFUNCTION CAUSE IS SHORT TO GROUND IN PARKING SENSOR SWITCH/INDICATOR SIGNAL WIRING HARNESS • Inspect for continuity between the following wiring harnesses: ― Parking sensor control module terminal V and ground ― Parking sensor control module terminal S and ground • Is there continuity?	Yes	• Refer to the wiring diagram and verify whether or not there is a mid-connector between the following wiring harnesses: ― Parking sensor control module terminal V and ground ― Parking sensor control module terminal S and ground If there is a mid-connector ― Determine the malfunctioning part by inspecting the mid-connector and the terminal for corrosion, damage, or pin disconnection, and the mid-wiring harness for a short to ground. ― Repair or replace the wiring harness which has a malfunction. If there is no mid-connector ― Repair or replace the wiring harness which has a malfunction.
No	Go to the next step.
6	INSPECT PARKING SENSOR SWITCH/INDICATOR • Reconnect all the disconnected connectors. • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) • Inspect the indicator unit. (See INDICATOR UNIT INSPECTION.) • Is the indicator unit normal?	Yes	Replace the parking sensor control module. (See PARKING SENSOR CONTROL MODULE REMOVAL/INSTALLATION.)
No	Replace the indicator unit. (See INDICATOR UNIT REMOVAL/INSTALLATION.) Note • The parking sensor switch/indicator is integrated with the indicator unit.

Without Front Ultrasonic Sensor

Description

SYSTEM DOES NOT OPERATE

•  Buzzer does not sound after ignition is switched ON and the selector lever (ATX)/Shift lever (MTX) is in the R position.

Possible Causes

•  Parking sensor control module power supply malfunction

With i-stop system

―  Open circuit in wiring harness between IGNITION relay and parking sensor control module terminal U

―  Short to ground in wiring harness between IGNITION relay and parking sensor control module terminal U

Without i-stop system

―  Open circuit in wiring harness between IG1 relay and parking sensor control module terminal U

―  Short to ground in wiring harness between IG1 relay and parking sensor control module terminal U

―  C/U IG1 15 A fuse damage, burnt out

•  Malfunction in parking sensor control module ground

―  Open circuit in wiring harness between parking sensor control module terminal Q and body ground

―  Ground point lifting or loosening

•  Volume adjustment of buzzer is at minimum

•  Buzzer circuit malfunction

―  Open or short circuit in wiring harness between parking sensor control module terminal Y and front parking sensor buzzer terminal B

―  Open or short circuit in wiring harness between parking sensor control module terminal Z and front parking sensor buzzer terminal A

•  Front parking sensor buzzer malfunction

•  Parking sensor control module malfunction

Diagnostic Procedure

Step

Inspection

Action

1

INSPECT PARKING SENSOR CONTROL MODULE POWER SUPPLY

•  Switch the ignition ON (engine off or on).

•  Measure the voltage at parking sensor control module terminal U.

•  Is the voltage B+?

Yes

Go to the next step.

No

With i-stop

•  Refer to the wiring diagram and verify whether or not there is a mid-connector between IGNITION relay terminal D and parking sensor control module terminal U.

If there is a mid-connector

―  Determine the malfunctioning part by inspecting the mid-connector and the terminal for corrosion, damage, or pin disconnection, and the mid-wiring harness for a open circuit or short to ground.

―  Repair or replace the wiring harness which has a malfunction.

If there is no mid-connector

―  Repair or replace the wiring harness which has a malfunction.

Without i-stop

•  Inspect the C/U IG1 15 A fuse.

If the fuse is burned out:

•  Inspect and repair the wiring harness between the C/U IG1 15 A fuse and parking sensor control module terminal U for a short circuit to the ground system.

If the fuse is not damaged or burned out:

•  Refer to the wiring diagram and verify whether or not there is a mid-connector between IG relay terminal C and parking sensor control module terminal U.

If there is a mid-connector

•  Determine the malfunctioning part by inspecting the mid-connector and the terminal for corrosion, damage, or pin disconnection, and the mid-wiring harness for a open circuit.

•  Repair or replace the wiring harness which has a malfunction.

If there is no mid-connector

•  Repair or replace the wiring harness which has a malfunction.

2

INSPECT PARKING SENSOR CONTROL MODULE GROUND CIRCUIT

•  Switch the ignition off.

•  Disconnect the negative battery cable.
(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].)

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].)

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].)

•  Disconnect the parking sensor control module connector.

•  Verify the continuity between connector terminal Q on parking sensor control module vehicle side and body ground.

•  Is there continuity?

Yes

Inspect and repair the ground point for looseness, disengagement, or lifting.

Repair or replace the wiring harness.

No

Go to the next step.

3

ADJUST BUZZER VOLUME

•  Adjust the buzzer volume.
(See BEEP SOUND ADJUSTMENT.)

•  Was the malfunction corrected?

Yes

Inspection completed (buzzer volume adjustment malfunction).

No

Go to the next step.

4

INSPECT WIRING HARNESS BETWEEN PARKING SENSOR CONTROL MODULE AND FRONT PARKING SENSOR BUZZER FOR OPEN CIRCUIT

•  Disconnect the connectors of the parking sensor buzzer and parking sensor control module.

•  Inspect for continuity between the following wiring harnesses:

―  Parking sensor control module terminal Y and front parking sensor buzzer terminal B

―  Parking sensor control module terminal Z and front parking sensor buzzer terminal A

•  Is there continuity?

Yes

Go to the next step.

No

•  Refer to the wiring diagram and verify whether or not there is a mid-connector between the following wiring harnesses:

―  Parking sensor control module terminal Y and front parking sensor buzzer terminal B

―  Parking sensor control module terminal Z and front parking sensor buzzer terminal A

If there is a mid-connector

―  Determine the malfunctioning part by inspecting the mid-connector and the terminal for corrosion, damage, or pin disconnection, and the mid-wiring harness for a open circuit.

―  Repair or replace the wiring harness which has a malfunction.

If there is no mid-connector

―  Repair or replace the wiring harness which has a malfunction.

5

INSPECT WIRING HARNESS BETWEEN PARKING SENSOR CONTROL MODULE AND FRONT PARKING SENSOR BUZZER FOR SHORT TO GROUND

•  Inspect for continuity between the following wiring harnesses:

―  Parking sensor control module terminal Y and ground

―  Parking sensor control module terminal Z and ground

•  Is there continuity?

Yes

•  Refer to the wiring diagram and verify whether or not there is a mid-connector between the following wiring harnesses:

―  Parking sensor control module terminal Y and front parking sensor buzzer terminal B

―  Parking sensor control module terminal Z and front parking sensor buzzer terminal A

If there is a mid-connector

―  Determine the malfunctioning part by inspecting the mid-connector and the terminal for corrosion, damage, or pin disconnection, and the mid-wiring harness for a short to ground.

―  Repair or replace the wiring harness which has a malfunction.

If there is no mid-connector

―  Repair or replace the wiring harness which has a malfunction.

No

Go to the next step.

6

DETERMINE IF MALFUNCTION CAUSE IS FRONT PARKING SENSOR BUZZER OR PARKING SENSOR CONTROL MODULE

•  Inspect the front parking sensor buzzer.
(See FRONT PARKING SENSOR BUZZER INSPECTION.)

•  Is the front parking sensor buzzer normal?

Yes

Replace the parking sensor control module.

(See PARKING SENSOR CONTROL MODULE REMOVAL/INSTALLATION.)

No

Replace the front parking sensor buzzer.

(See FRONT PARKING SENSOR BUZZER REMOVAL/INSTALLATION.)