No.2 MALFUNCTION DETECTION SOUND ACTIVATED [PARKING SENSOR]

id0903z4886400

2

Malfunction detection sound activated
DESCRIPTION
Malfunction detection sound activates after ignition switch is turned on.
POSSIBLE CAUSES
•  Ultrasonic sensor malfunction
―  Ultrasonic sensor soiled, damaged (scratches, deformation), frozen (iced)
―  Ultrasonic sensor malfunction
•  Wiring harness malfunction
―  Open or short circuit in parking sensor control module terminal G and corner sensor (RH) terminal B
―  Open or short circuit in parking sensor control module terminal E and corner sensor (LH) terminal B
―  Open or short circuit in parking sensor control module terminal C and back sensor (RH) terminal B
―  Open or short circuit in parking sensor control module terminal A and back sensor (LH) terminal B
―  Open or short circuit in parking sensor control module terminal H and each ultrasonic sensor terminal A
―  Open or short circuit in short code (between each ultrasonic sensor and parking sensor control module)
•  Corner sensor/back sensor ground malfunction
•  Parking sensor control module malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
VERIFY CONDITION OF EACH SENSOR
•  Visually inspect the condition of each ultrasonic sensor.
•  Is a sensor soiled, damaged (scratches, deformation), or frozen (iced)?
Yes
If there is any dirt or ice adhesion:
•  Remove any dirt or ice and verify if the malfunction recurs.
•  If the malfunction recurs, go to the next step.
If there is any damage:
•  Replace the sensor.
No
Go to the next step.
2
SPECIFY MALFUNCTIONING SYSTEM
•  Inspect the terminal voltage of the parking sensor control module.
•  Is the voltage normal?
Yes
Replace the parking sensor control module.
(See PARKING SENSOR CONTROL MODULE REMOVAL/INSTALLATION.)
No
Go to the next step.
3
CONNECTOR CONNECTION CONDITION INSPECTION FOR MALFUNCTIONING SYSTEM
•  Verify the pin connection condition of the wiring harness between the parking sensor control module and short wiring harness connector related to the system malfunctioning in Step 2.
Corner sensor (RH)
―  Parking sensor control module terminal G and short connector (8-pin) terminal A
―  Parking sensor control module terminal H and short connector (8-pin) terminal B
Corner sensor (LH)
―  Parking sensor control module terminal E and short connector (8-pin) terminal E
―  Parking sensor control module terminal H and short connector (8-pin) terminal B
Back sensor (RH)
―  Parking sensor control module terminal C and short connector (8-pin) terminal C
―  Parking sensor control module terminal H and short connector (8-pin) terminal B
Back sensor (LH)
―  Parking sensor control module terminal A and short connector (8-pin) terminal G
―  Parking sensor control module terminal H and short connector (8-pin) terminal B
•  Are the connections normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning part.
4
VERIFY IF MALFUNCTION CAUSE IS SHORT TO GROUND IN WIRING HARNESS BETWEEN PARKING SENSOR CONTROL MODULE AND SHORT CONNECTOR
•  Switch the ignition to off.
•  Disconnect the short connector.
•  Verify the continuity between the following vehicle side wiring harness connectors (connected to parking sensor control module) and body ground related to the system malfunctioning in Step 2.
Corner sensor (RH)
―  Short connector terminal G
Corner sensor (LH)
―  Short connector terminal E
Back sensor (RH)
―  Short connector terminal C
Back sensor (LH)
―  Short connector terminal A
•  Is there continuity?
Yes
Repair for a short to the wiring harness ground.
If the short to ground could not detected, replace the parking sensor control module (parking sensor internal circuit is short to ground.).
No
Go to the next step.
5
VERIFY IF MALFUNCTION CAUSE IS OPEN CIRCUIT IN WIRING HARNESS BETWEEN PARKING SENSOR CONTROL MODULE AND SHORT CONNECTOR
•  Leave the short connector disconnected.
•  Switch the ignition to off.
•  Disconnect the parking sensor control module connector.
•  Verify the continuity between the following vehicle side wiring harness connectors related to the system malfunctioning in Step 2.
Corner sensor (RH)
―  Parking sensor control module terminal G and short connector (8-pin) terminal A
―  Parking sensor control module terminal H and short connector (8-pin) terminal B
Corner sensor (LH)
―  Parking sensor control module terminal E and short connector (8-pin) terminal E
―  Parking sensor control module terminal H and short connector (8-pin) terminal B
Back sensor (RH)
―  Parking sensor control module terminal C and short connector (8-pin) terminal C
―  Parking sensor control module terminal H and short connector (8-pin) terminal B
Back sensor (LH)
―  Parking sensor control module terminal A and short connector (8-pin) terminal G
―  Parking sensor control module terminal H and short connector (8-pin) terminal B
•  Is there continuity?
Yes
Go to the next step.
No
Repair for an open circuit in the wiring harness.
6
VERIFY IF MALFUNCTION CAUSE IS SHORT TO EACH OTHER IN WIRING HARNESS BETWEEN ULTRASONIC SENSOR SIGNAL AND SIGNAL GROUND
•  Leave the short connector and parking control module connectors disconnected.
•  Verify continuity between the following vehicle side wiring harness connectors related to the system malfunctioning in Step 2.
Corner sensor (RH)
―  Parking sensor control module terminal G and terminal H
Corner sensor (LH)
―  Parking sensor control module terminal E and terminal H
Back sensor (RH)
―  Parking sensor control module terminal C and terminal H
Back sensor (LH)
―  Parking sensor control module terminal A and terminal H
•  Is there continuity?
Yes
Repair for a short circuit.
No
Go to the next step.
7
VERIFY IF MALFUNCTION CAUSE IS SHORT TO POWER SUPPLY IN WIRING HARNESS BETWEEN PARKING SENSOR CONTROL MODULE AND SHORT CONNECTOR
•  Leave the short connector and parking control module connectors disconnected.
•  Measure the terminal voltage between the following vehicle side wiring harness connectors related to the system malfunctioning in Step 2.
Corner sensor (RH)
―  Parking sensor control module terminal G
―  Parking sensor control module terminal H
Corner sensor (LH)
―  Parking sensor control module terminal E
―  Parking sensor control module terminal H
Back sensor (RH)
―  Parking sensor control module terminal C
―  Parking sensor control module terminal H
Back sensor (LH)
―  Parking sensor control module terminal A
―  Parking sensor control module terminal H
•  Is the voltage 2 V or more?
Yes
Repair for a short to the wiring harness power supply.
No
Go to the next step.
8
MALFUNCTIONING SENSOR TERMINAL CONNECTION CONDITION INSPECTION
•  Verify the pin connection condition related to the ultrasonic sensor of the system malfunctioning in Step 2.
•  Are the connections normal?
Yes
Go to the next step.
No
Repair or replace the malfunction location.
9
VERIFY IF MALFUNCTION CAUSE IS OPEN CIRCUIT IN WIRING HARNESS BETWEEN SHORT CONNECTOR AND ULTRASONIC SENSOR
•  Leave the short connector disconnected.
•  Switch the ignition to off.
•  Disconnect the ultrasonic sensor connector.
•  Verify the continuity between the following vehicle side wiring harness connectors related to the system malfunctioning in Step 2.
Corner sensor (RH)
―  Corner sensor terminal B and short connector (8-pin) terminal A
―  Corner sensor terminal A and short connector (8-pin) terminal B
Corner sensor (LH)
―  Corner sensor terminal B and short connector (8-pin) terminal E
―  Corner sensor terminal A and short connector (8-pin) terminal B
Back sensor (RH)
―  Back sensor terminal B and short connector (8-pin) terminal C
―  Back sensor terminal A and short connector (8-pin) terminal B
Back sensor (LH)
―  Back sensor terminal B and short connector (8-pin) terminal G
―  Back sensor terminal A and short connector (8-pin) terminal B
•  Is there continuity?
Yes
Go to the next step.
No
Repair for an open circuit in the wiring harness.
10
VERIFY IF MALFUNCTION CAUSE IS SHORT TO GROUND IN WIRING HARNESS BETWEEN SHORT CONNECTOR AND ULTRASONIC SENSOR
•  Leave the short connector and ultrasonic sensor connectors disconnected.
•  Verify the continuity between the following vehicle side wiring harness connectors and body ground related to the system malfunctioning in Step 2.
Corner sensor (RH)
―  Short connector (8-pin) terminal A
Corner sensor (LH)
―  Short connector (8-pin) terminal E
Back sensor (RH)
―  Short connector (8-pin) terminal C
Back sensor (LH)
―  Short connector (8-pin) terminal G
•  Is there continuity?
Yes
Repair for a short to the wiring harness ground.
No
Go to the next step.
11
VERIFY IF MALFUNCTION CAUSE IS SHORT TO EACH OTHER IN WIRING HARNESS BETWEEN ULTRASONIC SENSOR SIGNAL AND SIGNAL GROUND
•  Leave the short connector and ultrasonic sensor connectors disconnected.
•  Verify continuity between the following vehicle side wiring harness connectors related to the system malfunctioning in Step 2.
Corner sensor (RH)
―  Short connector (8-pin) terminal A and terminal B
Corner sensor (LH)
―  Short connector (8-pin) terminal E and terminal B
Back sensor (RH)
―  Short connector (8-pin) terminal C and terminal B
Back sensor (LH)
―  Short connector (8-pin) terminal G and terminal B
•  Is there continuity?
Yes
Repair for a short to the wiring harness.
No
Go to the next step.
12
VERIFY IF MALFUNCTION CAUSE IS SHORT TO POWER SUPPLY IN WIRING HARNESS BETWEEN SHORT CONNECTOR AND ULTRASONIC SENSOR
•  Leave the short connector and ultrasonic sensor connectors disconnected.
•  Measure the voltage between the following vehicle side wiring harness connectors related to the system malfunctioning in Step 2.
Corner sensor (RH)
―  Short connector (8-pin) terminal A
―  Short connector (8-pin) terminal B
Corner sensor (LH)
―  Short connector (8-pin) terminal E
―  Short connector (8-pin) terminal B
Back sensor (RH)
―  Short connector (8-pin) terminal C
―  Short connector (8-pin) terminal B
Back sensor (LH)
―  Short connector (8-pin) terminal G
―  Short connector (8-pin) terminal B
•  Is the voltage 2 V or more
Yes
Repair for a short to the wiring harness power supply.
No
Go to the next step.
13
DETERMINE IF MALFUNCTION CAUSE IS ULTRASONIC SENSOR OR PARKING SENSOR CONTROL MODULE
•  Replace the ultrasonic sensor in the system in which the malfunction occurred in Step 2.
•  Verify the malfunction symptom.
•  Has the malfunction symptom been eliminated?
Yes
Troubleshooting completed. Ultrasonic sensor malfunction.
No
Replace the parking sensor control module.
(See PARKING SENSOR CONTROL MODULE REMOVAL/INSTALLATION.)