DTC 28

Codes 28 & 29: Throttle Valve Motor Driver Malfunction, DTC Chart:

Codes 28 & 29: Throttle Valve Motor Driver Malfunction, Wiring Diagram:

Throttle Valve Motor Driver Malfunction, Inspection Procedure:

CIRCUIT DESCRIPTION
This circuit is used to send TRAC control information from the ABS & TRAC ECU to the Throttle Valve Motor Driver (TRC+, TRC-), and Throttle Valve Motor control information from the Throttle Valve Motor Driver to the ABS & TRAC ECU (THD).