Description of On-Board Diagnostics
DIAGNOSIS SYSTEMDESCRIPTION
When troubleshooting a vehicle with a diagnostic system, the only difference from the usual troubleshooting procedure is connecting the hand-held tester to the vehicle and reading various data output from the vehicle's steering lock ECU.
The steering lock ECU records DTCs when the computer detects a malfunction in the computer itself or in its circuits. To check the DTCs, connect the hand-held tester to the DLC3 on the vehicle. The hand-held tester enables you to erase the DTCs, activate the several actuators and check data list.