Without Scan Tool
DTC CHECK (USING SST CHECK WIRE)a. Using SST, connect terminals Tc and CG of the DLC3.
SST 09843-18040
b. Turn the ignition switch ON.
c. Read the DTC from the open door indicator light.
HINT: As an example, the blinking patterns for codes; normal, 12, and 11 and 12 are shown in the illustration. If a normal code is indicated, the body ECU is normal.
d. Check the problem using the DTC chart.
e. After completing the check, turn the ignition switch off, and disconnect terminals Tc and CG.