Toyota Tundra Service Manual: Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

Lighting System

DTC No.

Detection Item

Link

B1244

Light Sensor Circuit Malfunction

B124B

Automatic High Beam System

B124C

Automatic High Beam Camera

B2430

LED Headlight LH Circuit Malfunction

B2431

LED Headlight RH Circuit Malfunction

U023A

Lost Communication With Image Processing Module "A"

    Data List / Active Test

    Door Courtesy Switch Circuit

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    TERMINALS OF ECU 1. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY, MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (a) Remove the main body ECU (multiplex network body ECU) from the driver side junction block assembly. Click here (b) Connect the driver side junction block assembly connectors. (c) Measure the ...

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