Retrieving Diagnostic Trouble Codes

Ensure battery voltage is at least 12 volts. Turn ignition on. The TRAC indicator light should go on for 3 seconds.
Turn ignition on. Using a jumper wire, jumper DLC1 or DLC2 terminals Tc and E1. See Fig 1. If a malfunction is detected, 4 seconds will elapse and ABS light will begin to flash a 2-digit code. First series of blinks will equal first digit in a code. After a 1.5-second pause, second series of blinks will equal second digit in a code.
If 2 or more codes are stored, there will be a 2.5-second pause between each code. After all codes are flashed, there will be a 4-second pause and all codes will repeat. If TRAC system is functioning properly, TRAC light will blink 2 times per second. For code definitions, see IDENTIFYING DIAGNOSTIC TROUBLE CODES table.
After replacing or repairing components, clear diagnostic codes. If a battery cable was disconnected during repairs, all stored codes will be erased. If battery cable was not disconnected during repairs, see CLEARING CODES .

Fig 1: DLC2 Connector & DLC1 Check Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NOTE: DTCs listed do not apply to all models.

IDENTIFYING DIAGNOSTIC TROUBLE CODES

DTC	Condition
24	Sub-Throttle Actuator Open Or Short Circuit
25 , 26 & 27	TRAC Sub-Throttle Valve
28 & 29	Throttle Valve Motor Driver Malfunction
31	Right Front Wheel Speed Sensor Signal Malfunction
32	Left Front Wheel Speed Sensor Signal Malfunction
33	Right Rear Wheel Speed Sensor Signal Malfunction
34	Left Rear Wheel Speed Sensor Signal Malfunction
41	IG Power Supply Circuit
43	ABS Control System Malfunction
44	NE Signal Circuit
45 & 46	Main Throttle Position Sensor Circuit
47 & 48	Sub-Throttle Position Sensor Circuit
49	Engine Communication Circuit
51	Engine Malfunction Detection Circuit
52	Brake Fluid Level Warning Switch Circuit
53	ECM Communication Circuit Malfunction
54 & 55	TRAC Motor Relay Circuit
56	TRAC Pump Motor Malfunction
61	ABS ECU & TRAC ECU Communication Circuit Malfunction