PRE-COLLISION: PRE-COLLISION SYSTEM: PROBLEM SYMPTOMS TABLE; 2018 - 2020 MY Camry HV [07/2017

PROBLEM SYMPTOMS TABLE

HINT:

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.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
The pre-collision system uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to How to Proceed with Troubleshooting.

Pre-collision System

Symptom

Suspected Area

Link

"Pre-Collision System Unavailable" is displayed

Perform millimeter wave radar sensor assembly adjustment*1

Millimeter wave radar sensor assembly temperature malfunction

Millimeter wave radar sensor assembly low voltage malfunction

Millimeter wave radar sensor assembly

Combination meter assembly

"Pre-Collision System Unavailable Clean Sensor" is displayed

Foreign matter attached to millimeter wave radar sensor assembly

Millimeter wave radar sensor assembly

Combination meter assembly

"Front Camera Unavailable" is displayed

Check current condition of forward recognition camera based on related Data List items.

Abnormal forward recognition camera voltage
Forward recognition camera temperature outside of operational range

Forward recognition camera

Combination meter assembly

Millimeter wave radar sensor assembly

"Front Camera Vision Blocked Clean and Demist Windshield" is displayed

Foreign matter attached to forward recognition camera or area of windshield glass in front of forward recognition camera

Forward recognition camera

Combination meter assembly

Millimeter wave radar sensor assembly

Although there is possibility of collision, pre-collision controls (all controls) do not operate ("Pre-collision System Unavailable" is not displayed)

Check if pre-collision system is canceled

Vehicle condition/environment does not match the pre-collision system operation conditions (Confirm control operation conditions)

Check installation condition of millimeter wave radar sensor assembly

Perform millimeter wave radar sensor assembly adjustment

Millimeter wave radar sensor assembly

Check installation condition of forward recognition camera

Perform forward recognition camera adjustment

Forward recognition camera

Although there is no possibility of collision, pre-collision controls (all controls) operate

Vehicle condition/environment does not match the pre-collision system operation conditions (Confirm control operation conditions)

Check installation condition of millimeter wave radar sensor assembly

Perform millimeter wave radar sensor assembly adjustment

Millimeter wave radar sensor assembly

Check installation condition of forward recognition camera

Perform forward recognition camera adjustment

Forward recognition camera

Pre-collision system does not operate

Check if pre-collision system is canceled

ECU power source circuit

Millimeter wave radar sensor assembly

Pre-collision system cannot be canceled (PCS warning light does not illuminate)

Check steering pad switch assembly condition

Combination meter assembly (check if indicator illuminates using Active Test)

Millimeter wave radar sensor assembly

Combination meter assembly

Pre-collision system warning timing cannot be changed (warning timing setting screen not displayed on multi-information display)

Millimeter wave radar sensor assembly

Combination meter assembly

*1: If error code 7 is output during beam axis alignment, clear the DTCs and perform beam axis alignment again.