Pre-Crash Safety System Pre-Crash Safety System Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK

INSPECT BATTERY

CHECK HARNESS OR CONNECTOR (DRIVING SUPPORT ECU ASSEMBLY - BATTERY AND BODY GROUND)

CHECK CAN COMMUNICATION SYSTEM

CHECK DTC OUTPUT

DATA LIST / ACTIVE TEST

VEHICLE CONTROL HISTORY

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

1. Check the customer problem analysis and symptom (Click here).
   

1. Measure the battery voltage.
   

   Standard voltage:

   11 to 14 V
   

2. Using the parts location and system diagram, check the system for blown-out fuses, open or short circuits in the wire harness(es) and connectors that are not properly connected by performing a visual check.
   

   HINT:

   If the voltage is 11 V or less, replace or recharge the battery before proceeding to the next step.

NOTICE:

As the connector may be damaged if a load of more than 10 kg (22 lb) is applied to it, do not apply any more load than necessary to the connector.

1. Disconnect the driving support ECU assembly connector.
   

2. Measure the voltage according to the value(s) in the table below.
   

   NOTICE:

   DTCs may be output when connectors are disconnected during inspection. Therefore, make sure to clear the DTCs using the GTS once the inspection has been completed.

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   E164-7 (B) - Body ground	Engine switch on (IG)	11 to 14 V
   	Engine switch off	Below 1 V

3. Measure the resistance according to the value(s) in the table below.
   

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   E164-28 (GND) - Body ground	Always	Below 1 Ω

1. Use the GTS to check if the CAN communication system is functioning normally.
   

   1. for LHD: Click here
      
   2. for RHD: Click here
      

   Result

   Result	Proceed to
   CAN communication system DTCs are not output	A
   CAN communication system DTCs are output (for LHD (w/ Central Gateway ECU))	B
   CAN communication system DTCs are output (for RHD (w/ Central Gateway ECU))	C

1. Connect the GTS to the DLC3.
   

2. Turn the engine switch on (IG).
   

3. Enter the following menus: Body Electrical / Pre-Crash 2 / Trouble Codes.
   

4. Check the DTCs (Click here).
   

5. Clear for DTCs (Click here).
   

6. Recheck for DTCs. Try to reproduce the DTCs by duplicating the conditions indicated by the DTCs. (Click here).
   

1. Using the GTS, check the Data List (Click here).
   

2. Using the GTS, perform the Active Test (Click here).
   

1. Check whether the vehicle control history (PCS operation history) matches the customer analysis (Click here).
   

   Result

   Result	Proceed to
   Vehicle control history matches the customer analysis	A
   Vehicle control history does not match customer analysis or there is no vehicle control history	B