Symptom Chart

CAUTION: Do not apply any grease based products to any parking aid system connector or pins.

NOTE: Please note if this diagnosis is being carried out on a vehicle without a hard wired parking aid sounder, ensure the in car infotainment system is fully functional and configured correctly

NOTE: Parking aid sensors that are painted incorrectly and not to the manufacturer standards, will not be considered in any warranty claim

Symptom	Symptom	Symptom
NOTE: Permanent/intermittent fault Parking aid system not functioning correctly. (No DTCs displayed)	Front or rear parking aid sensors dirty Front or rear parking aid sensor position incorrect Front or rear parking aid sensor incorrectly installed Front or rear parking aid sensor coupling rings not installed/incorrectly installed Parking aid control module or parking aid sensor connector not fully latched Parking aid sensors painted without being removed from the bumper assembly or not painted to the manufacturer specification	Clean front or rear parking aid sensors Check the front or rear parking aid sensor positions Check the front or rear parking aid sensors are installed correctly Check the front or rear parking aid sensor coupling rings are installed/installed correctly Ensure all parking aid system connectors are latched correctly Remove parking aid sensors and ensure correctly painted parking aid sensors are installed Parking aid sensors that are painted incorrectly and not to the manufacturer standards, will not be considered in any warranty claim
NOTE: Permanent/intermittent fault Parking aid system not functioning correctly. (No DTCs displayed). System characteristics or environmental effects	Parking aid sensors incorrectly mounted Incorrect vehicle ride height Dirty parking aid sensor face. Ice/snow covered sensor. Debris trapped between parking aid sensor and parking aid sensor body. Heavy rain or water splash from the ground Non standard, bumper, exhausts/tailpipes, tow bar or external spare wheel mounting Area around vehicle is not clear of obstacles such as channels, gutters or other items on the ground Exhaust gas and warm air clouds creating ghost echoes Vehicle not on level ground or next to a gradient Parking aid sensors painted without being removed from the bumper assembly or not painted to the manufacturer specification	Ensure the sensors are a tight fit in the holder and locked. Ensure the sensors are centered in the holder and bumper and at the correct angle Ensure vehicle ride height is within the specified limits. Rectify as required Clean the sensor face as required. Defrost the sensor and dry as required. Clear any debris from the sensor and holder as required. Water flowing over the sensor is a system limitation. (no action required) Check for non standard, bumper, exhausts/tailpipe, tow bar or external spare wheel mounting that may be being detected by the parking aid system. Rectify as required Ensure the area around the vehicle is clear of any obstacles, move the vehicle to a suitable area before continuing diagnosis Ensure no exhaust gas or warm area clouds are in the area around the parking aid sensor detection range Ensure the vehicle is on level ground and clear of any ramps, potholes or speed bumps, move the vehicle to a suitable area before continuing diagnosis Remove parking aid sensor and ensure correctly painted parking aid sensor is installed Parking aid sensors that are painted incorrectly and not to the manufacturer standards, will not be considered in any warranty claim
Parking aid sensors are being returned with no faults found or signs of water ingress/corrosion	Possible issue with sensor connectors not latched correctly	When either no/intermittent operation has been reported the following action should be taken Using datalogger identify the position of the suspect parking aid sensor within the bumper 1. Visually locate the position of the suspect parking aid sensor. Inspect and provide details in claim if the sensor has any sign of physical damage 2. Remove the bumper. Disconnect the wiring at the main harness connector. Inspect the main harness connectors and terminals for signs of damage, backed out pins, corrosion and water ingress, or damage to the seals. Provide details in claim if any of the above symptoms are present 3. Attempt to remove the harness connector from the suspect parking aid sensor without using the connector latch i.e. lightly pull back on ALL wires together, ensuring the harness is held close to the back of the connector, not elsewhere on the wiring harness. DO NOT apply excessive force. If the connector can be removed without using the latch, provide details in claim if connector is loose. If the connector is fully latched, disconnect it from the sensor 4. Inspect and provide details in claim if the suspect sensor harness connector has any sign of water ingress/corrosion 5. Inspect and provide details in claim if the suspect parking aid sensor harness connector shows any sign that the terminals have backed-out of the connector or for any damage to the terminal seals. Replace/repair the harness as required and proceed 6. Remove the suspect parking aid sensor from the bumper. Inspect the parking aid sensor connector for signs of water ingress/corrosion. Provide details in claim if corrosion/water ingress is present 7. Exchange the suspect parking aid sensor with another parking aid sensor within the bumper that is performing correctly. Reconnect all sensors and reconnect the bumper main harness connector. Repeat step 1. Confirm if the original fault now appears at the new position of the suspect parking aid sensor, if so, proceed to step 8. If not, carry out the appropriate open circuit and short circuit checks between the original suspect parking aid sensor harness connector and the parking aid control module 9. Refit the parking aid sensors to their original position in the bumper 10. Reconnect the parking aid sensor to the bumper harness connector. Reconnect main harness connector and refit the bumper 11. Repeat Step 1. If fault is still present, replace only the faulty sensor