DTC Check / Clear

DTC CHECK / CLEAR USING SST CHECK WIRE:
1. Step 1: DTC check
  1. Using SST, create a short-circuit between terminals TC and CG of the DLC3.
    
    Fig 1: Identifying DLC3 Connector
    Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
    
    SST 09843-18040
  2. Turn the ignition switch on (IG).
  3. Read and record DTCs from the door warning light on the combination meter. As examples, refer to the chart below for the blinking patterns of the normal system code and diagnostic trouble code 42.
    
    Fig 2: Identifying Blinking Pattern
    Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
    
    HINT:
    - If the door warning light does not conform to DTC blinking patterns, or to the normal system code blinking pattern, inspect the multiplex communication system (See DIAGNOSIS SYSTEM ).
    - The door warning light circuit uses BEAN for communication. If there are any malfunctions in the circuit, check for DTCs in the multiplex communication system.
2. DTC clear
  1. Turn the ignition switch off.
  2. If DTCs are indicated, repair the relevant circuits referring to the DIAGNOSTIC TROUBLE CODE CHART (See DIAGNOSTIC TROUBLE CODE CHART ).
  3. Clear the DTCs according to either one of the following procedures.
    - Disconnect the negative (-) battery cable for 60 seconds.
    - Remove the ECU-B fuse for 60 seconds.
  4. Recheck the DTCs (see step 1).
DTC CHECK / CLEAR USING INTELLIGENT TESTER:
1. DTC check
  1. Connect the intelligent tester to the DLC3.
    
    Fig 3: Connecting Intelligent Tester To DLC3
    Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
  2. Turn the ignition switch on (IG).
  3. Read the DTCs on the tester screen.
2. DTC clear
  1. Connect the intelligent tester to the DLC3.
  2. Turn the ignition switch on (IG).
  3. Clear the DTCs following the prompts on the tester screen.
    HINT:
    
    The intelligent tester has a SNAPSHOT function which records the monitored data.
    
    Refer to the intelligent tester operator's manual for further details.
SELF-DIAGNOSTIC MODE OPERATING IGNITION KEY CYLINDER:
1. Switch to self-diagnostic mode.
  1. Establish the vehicle's initial conditions (See DTC CHECK / CLEAR ).
  2. Insert the key into the ignition key cylinder and remove it.
  3. Within 5 seconds after the key is removed, reinsert it into the ignition key cylinder.
  4. Step A: Turn the ignition switch on (IG) then off.
  5. Step B: Within 30 seconds of turning the ignition switch off, repeat step (A) 9 more times.
    HINT:
    - Turning the ignition switch on (IG), after step (B) has been completed, will end the self-diagnostic mode.
    - Do not lock or unlock doors while performing the self-diagnostic mode.
    NOTE: If the change to self-diagnostic mode fails, the system will return to normal mode.
2. Check that the system has switched to self-diagnostic mode by checking the sound pattern of the wireless door lock buzzer.
  
  Fig 4: Identifying Sound Pattern (Wireless Door Lock Buzzer)
  Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
3. Check the diagnostic outputs when the door control transmitter switch is held down. The diagnostic outputs can be checked by listening to the wireless door lock buzzer.
  
  Fig 5: Sound Pattern (Buzzer Output)
  Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
SELF-DIAGNOSTIC MODE USING INTELLIGENT TESTER:
1. Switch to self-diagnostic mode.
  1. Connect the intelligent tester to the DLC3.
  2. Turn the ignition switch on (IG) and turn the intelligent tester main switch on.
    HINT:
    
    Refer to the intelligent tester operator's manual for further details.