PRE-COLLISION SYSTEM PROBLEM SYMPTOMS TABLE

Note:

When replacing the combination meter assembly, make sure to replace it with a new one.
When replacing the pre-collision city sensor, replace it with a new one and be sure to initialize the settings. If a pre-collision city sensor which was installed to another vehicle is used, the information stored in the pre-collision city sensor will not match the information from the vehicle and, as a result, a DTC may be stored.

Tip:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

Table 1. Pre-collision System
Symptom	Suspected Area	Link
PCS OFF warning light blinking or illuminated	The pre-collision city sensor temperature is extremely high and the system will not operate. When the temperature return to normal, normal control will return (Check High or Low Temperature Status).	Click here
	The pre-collision city sensor cannot detect obstacles due to dirt. When dirt is removed, normal control will return (Check Lidar Blockage Status).	Click here
	The pre-collision system does not operate due to abnormal pre-collision city sensor voltage	Click here
	Heater Relay Circuit	Click here
	Pre-collision city sensor	Click here
	Combination meter assembly	Click here
Although there is possibility of collision, pre-collision controls (all front collision controls) do not operate (PCS OFF warning light is not illuminated)	Vehicle condition/environment does not match pre-collision control operation conditions (confirm control operation conditions)	Click here
	Laser Sensor Inspection	Click here
	Pre-collision system circuit	Click here
	Check pre-collision city sensor installation condition	Click here
	Adjust pre-collision city sensor optical axis Tip: Pre-collision City Sensor Optical Axis Learning can be performed by using either One Time Recognition or Sequential Recognition. One Time Recognition: 1 Sequential Recognition: 2	Click here1 Click here2
	Pre-collision city sensor	Click here
	Combination meter assembly	Click here
Although there is no possibility of collision, pre-collision controls (all front collision controls) operate	Driving condition/environment matches pre-collision control operation conditions (Check Precaution for Pre-collision City Sensor)	Click here
	Laser Sensor Inspection	Click here
	Check pre-collision city sensor installation condition	Click here
	Adjust pre-collision city sensor optical axis Tip: Pre-collision City Sensor Optical Axis Learning can be performed by using either One Time Recognition or Sequential Recognition. One Time Recognition: 1 Sequential Recognition: 2	Click here1 Click here2
	Pre-collision city sensor	Click here
Pre-collision system cannot be canceled (PCS OFF warning light does not illuminate)	Check pre-collision system cancel switch assembly condition	-
	Pre-collision system switch circuit	Click here
	Pre-collision city sensor	Click here
	Combination meter assembly	Click here
Pre-collision brake control and pre-collision brake assist control cannot be canceled (PCS OFF warning light does not illuminate)	Check VSC OFF switch condition	-
	Vehicle stability control system	Click here
	Pre-collision city sensor	Click here
	Combination meter assembly	Click here
Pre-collision system sensitivity cannot be changed (sensitivity setting screen not displayed on multi-information display)	Check pre-collision system cancel switch assembly condition	-
	Pre-collision system switch circuit	Click here
	Pre-collision city sensor	Click here
	Combination meter assembly	Click here