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.

Description

Possible malfunction

―  Open circuit or short to ground in wiring harness between climate control unit terminal 1B (with full auto A/C)/clock terminal I (with manual A/C) and parking sensor control module terminal V

―  Open circuit or short to ground in wiring harness between climate control unit terminal 1A (with full auto A/C)/clock terminal H (with manual A/C) and parking sensor control module terminal S

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

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 (LOCK). •  Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT i-stop)].) •  Disconnect the connectors of the climate control unit and parking sensor control module. •  Inspect for continuity between the following wiring harnesses: ―  Climate control unit terminal 1B (with full auto A/C)/clock terminal I (with manual A/C) and parking sensor control module terminal V ―  Climate control unit terminal 1A (with full auto A/C)/clock terminal H (with manual A/C) 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: ―  Climate control unit terminal 1B (with full auto A/C)/clock terminal I (with manual A/C) and parking sensor control module terminal V ―  Climate control unit terminal 1A (with full auto A/C)/clock terminal H (with manual A/C) 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 [SKYACTIV-D 2.2].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT i-stop)].) •  Switch the ignition ON (engine off or on). •  Measure the voltages at parking sensor control module terminals S and V when the parking sensor switch is turned off (indicator turns off). •  Is terminal S battery voltage and is terminal V approx. 5 V?	Yes	Replace the climate control unit (with full auto A/C)/clock (with manual A/C). (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].) (See CLOCK REMOVAL/INSTALLATION.) Note •  The parking sensor switch/indicator is integrated with the climate control unit (with full auto A/C)/clock (with manual A/C).
		No	Replace the parking sensor control module. (See PARKING SENSOR CONTROL MODULE REMOVAL/INSTALLATION.)