INDICATOR LIGHT DOES NOT ILLUMINATE [PARKING SENSOR]

id0903z4829600

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].)

Description

INDICATOR LIGHT DOES NOT ILLUMINATE

•  The parking sensor indicator does not illuminate (buzzer is normal) when the parking sensor switch/indicator is turned on.

•  The parking sensor indicator does not illuminate (buzzer is normal) even though the detection condition is met.

Possible Causes

•  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)

•  Parking sensor switch/indicator malfunction

•  Parking sensor control module malfunction

Diagnostic Procedure

Step

Inspection

Action

1

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

•  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 connectors of the climate control unit and parking sensor control module.

•  Inspect for continuity between the following wiring harnesses:

―  Indicator unit I and parking sensor control module terminal V

―  Indicator unit 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 I and parking sensor control module terminal V

―  Indicator unit 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.

2

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.

3

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.

Description	INDICATOR LIGHT DOES NOT ILLUMINATE
Description	• The parking sensor indicator does not illuminate (buzzer is normal) when the parking sensor switch/indicator is turned on. • The parking sensor indicator does not illuminate (buzzer is normal) even though the detection condition is met.
Possible Causes	• 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) • Parking sensor switch/indicator malfunction • Parking sensor control module malfunction

Step	Inspection		Action
1	INSPECT IF MALFUNCTION CAUSE IS OPEN CIRCUIT IN PARKING SENSOR SWITCH/INDICATOR SIGNAL WIRING HARNESS • 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 connectors of the climate control unit and parking sensor control module. • Inspect for continuity between the following wiring harnesses: ― Indicator unit I and parking sensor control module terminal V ― Indicator unit H and parking sensor control module terminal S • Is there continuity?	Yes	Go to the next step.
1		No	• Refer to the wiring diagram and verify whether or not there is a mid-connector between the following wiring harnesses: ― Indicator unit I and parking sensor control module terminal V ― Indicator unit 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.
2	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.
2		No	Go to the next step.
3	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.)
3		No	Replace the indicator unit. (See INDICATOR UNIT REMOVAL/INSTALLATION.) Note • The parking sensor switch/indicator is integrated with the indicator unit.