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Retrieving Diagnostic Trouble Codes

  1. Turn ignition switch to ON position. Ensure TRAC OFF indicator light illuminates for 3 seconds and turns off. If TRAC OFF indicator light does not function as indicated, see TRAC OFF INDICATOR LIGHT, TRAC CUT SWITCH CIRCUIT  under SYSTEM TESTS.
  2. Ensure ignition switch is in ON position. If a DTC is set after TRAC OFF indicator light has illuminated for 3 seconds, light will begin blinking every 1.5 seconds. If DTC 53 is set, TRAC OFF indicator light may remain on (without blinking) until engine is started.
  3. Using a fused jumper wire or service connector (SST 09843-18020), connect terminals Tc and E1 of Data Link Connector No. 1 (DLC1) or Data Link Connector No. 2 (DLC2). See Fig 1. DLC1 is located in left side of engine compartment, next to strut tower. DLC2 is located under left side of instrument panel.
  4. If a malfunction is detected, TRAC OFF indicator light will begin to flash a 2-digit DTC after 4 seconds. TRAC OFF indicator light will flash first digit, followed by a 1.5 second pause, and then light will flash second digit.
  5. Count number of flashes to obtain digits of 2-digit code. If 2 or more codes are stored, a 2.5 second pause will separate codes. If 2 or more malfunctions are indicated at the same time, lowest numbered DTC will be displayed first. See DIAGNOSTIC TROUBLE CODES  table.
  6. If ABS is functioning properly, a normal code will be set. During normal code, 2 seconds will elapse, and then TRAC OFF indicator light will blink once every .25 second.
  7. If TRAC OFF indicator light does not illuminate, see Tc TERMINAL CIRCUIT  or TRAC OFF INDICATOR LIGHT, TRAC CUT SWITCH CIRCUIT  under SYSTEM TESTS. After replacing or repairing malfunctioning components, clear diagnostic trouble codes. See CLEARING DIAGNOSTIC TROUBLE CODES . Turn ignition off. Remove fused jumper wire or Service Connector (SST 09843-18020) from DLC1 or DLC2.
Fig 1: Identifying Data Link Connector (DLC1 & DLC2) Terminals
G94G47692Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
DIAGNOSTIC TROUBLE CODES

DTC Condition
43  ABS Control System Malfunction
44  Open Or Short In NE Signal Circuit
51 (1) ECM System Malfunction
52 (1) Low Brake Fluid Level, Open In Brake Fluid Level Warning Switch Circuit
53  ECM Communication Circuit Malfunction
Always On (2) ABS/TRAC ECU Malfunction Or TRAC OFF Switch On
(1) When malfunction is no longer detected, DTC will erase automatically.
(2) TRAC OFF indicator light will illuminate if malfunction is detected by ABS/TRAC ECU. For diagnosis, see TRAC OFF INDICATOR LIGHT, TRAC CUT SWITCH CIRCUIT .