PARKING SENSOR INDICATOR DOES NOT TURN ON [PARKING SENSOR SYSTEM]

id0903n7200500

Note

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

Description

Possible Causes

―  Indicator unit terminal H—Parking assist unit terminal S

―  Indicator unit terminal I—Parking assist unit terminal V

―  Indicator unit terminal H—Parking assist unit terminal S

―  Indicator unit terminal I—Parking assist unit terminal V

―  Indicator unit terminal H—Parking assist unit terminal S

―  Indicator unit terminal I—Parking assist unit terminal V

―  Parking sensor switch/indicator malfunction

System Wiring Diagram

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Diagnostic Procedure

Step	Inspection		Action
1	VERIFY ALL SYSTEM DTCs •  Switch the ignition off. •  Switch the ignition ON (engine off or on) and wait for 10 s or more. •  Perform a CMDTC self-test using the M-MDS. (See DTC INSPECTION [PARKING ASSIST UNIT].) •  Are any DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [PARKING ASSIST UNIT].)
		No	Go to the next step.
2	INSPECT INDICATOR UNIT CONNECTOR CONDITION •  Switch the ignition off. •  Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT i-stop)].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) •  Disconnect the indicator unit connector. •  Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. •  Is the connector normal?	Yes	Go to the next step.
		No	Repair or replace the connector.
3	INSPECT PARKING ASSIST UNIT CONNECTOR CONDITION •  Disconnect the parking assist unit connector. •  Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. •  Is the connector normal?	Yes	Go to the next step.
		No	Repair or replace the connector.
4	INSPECT PARKING SENSOR SWITCH/INDICATOR CIRCUIT FOR SHORT TO GROUND •  Verify that the indicator unit and parking assist unit connectors are disconnected. •  Inspect for continuity between the following terminals (wiring harness-side) and body ground: ―  Indicator unit terminal H ―  Indicator unit terminal I •  Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: •  Indicator unit terminal H—Parking assist unit terminal S •  Indicator unit terminal I—Parking assist unit terminal V If there is a common connector: •  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. •  Repair or replace the malfunctioning part. If there is no common connector: •  Repair or replace the wiring harness which has a short to ground.
		No	Go to the next step.
5	INSPECT PARKING SENSOR SWITCH/INDICATOR CIRCUIT FOR SHORT TO POWER SUPPLY •  Verify that the indicator unit and parking assist unit connectors are disconnected. •  Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT i-stop)].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) •  Switch the ignition ON (engine off or on). •  Measure the voltage at the following terminals (wiring harness-side): ―  Indicator unit terminal H ―  Indicator unit terminal I •  Is the voltage 0 V?	Yes	Go to the next step.
		No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: •  Indicator unit terminal H—Parking assist unit terminal S •  Indicator unit terminal I—Parking assist unit terminal V If there is a common connector: •  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply. •  Repair or replace the malfunctioning part. If there is no common connector: •  Repair or replace the wiring harness which has a short to power supply.
6	INSPECT PARKING SENSOR SWITCH/INDICATOR CIRCUIT FOR OPEN CIRCUIT •  Switch the ignition off. •  Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITHOUT i-stop)].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) •  Verify that the indicator unit and parking assist unit connectors are disconnected. •  Inspect for continuity between the following terminals (wiring harness-side): ―  Indicator unit terminal H—Parking assist unit terminal S ―  Indicator unit terminal I—Parking assist unit terminal V •  Is there continuity?	Yes	Go to the next step.
		No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: •  Indicator unit terminal H—Parking assist unit terminal S •  Indicator unit terminal I—Parking assist unit terminal V If there is a common connector: •  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit. •  Repair or replace the malfunctioning part. If there is no common connector: •  Repair or replace the wiring harness which has an open circuit.
7	INSPECT PARKING SENSOR SWITCH/INDICATOR •  Inspect the parking sensor switch/indicator. (See INDICATOR UNIT INSPECTION.) •  Is the parking sensor switch/indicator normal?	Yes	Replace the parking assist unit. (See PARKING ASSIST UNIT REMOVAL/INSTALLATION.)
		No	Replace the indicator unit. (See INDICATOR UNIT REMOVAL/INSTALLATION.)