Toyota Tundra Service Manual: Dtc Check / Clear

DTC CHECK / CLEAR

1. CHECK DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Air conditioner / Trouble Codes.

(e) Check for DTCs.

2. CLEAR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Air conditioner / Trouble Codes.

(e) Clear the DTCs.

3. INDICATOR CHECK

(a) Press and hold the A/C control AUTO switch and Recirculation / Fresh switch simultaneously, and turn the ignition switch ON. Continue holding the 2 switches until the panel diagnosis mode begins.

(b) Check that all indicators turn on and off 4 times in succession at 1 second intervals.

HINT:

  • After the indicator check is completed, the system enters the DTC mode automatically.
  • Press the "OFF" switch to cancel the indicator check.
    Diagnostic Trouble Code Chart

    ECU Power Source Circuit

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    DESCRIPTION DTC B1786 is set when the occupant classification ECU receives a collision detection signal, which is sent by the front occupant detection sensor RH when an accident occurs. DTC B1786 is also set when the front seat frame with adjuster RH is subjected to a strong impact, even if an actua ...

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