Circuit Description

Two circuits (TRC+, TRC-) are used to send TRAC control information from the ABS ECU to the throttle valve motor driver. The THD circuit sends response information from the throttle valve motor driver to the ABS ECU. DTC is set when no THD data is received from throttle valve motor driver, or a signal is received from throttle motor driver indicating a malfunction in TRC+ or TRC- circuit(s). Possible causes are:

• THD open or short circuit.
• TRC+ open or short circuit.
• TRC- open or short circuit.
• ABS ECU.