Without Scan Tool

CHECK DTC (for Techstream)

a. Turn the engine switch off.
b. Connect the Techstream to the DLC3.
c. Turn the engine switch on (IG).
d. Using the Techstream, enter the following menus: Body / Pre-Collision 1 / Trouble Code.
e. Check for DTCs.
f. Using the Techstream, enter the following menus: Body / Pre-Collision 2 / Trouble Code.
g. Check for DTCs.

HINT: As the driving support ECU and seat belt control ECU output DTCs for the pre-collision system, be sure to check the DTCs Pre-Collision 1 and Pre-Collision 2.