DESCRIPTION The main body ECU (multiplex network body ECU) detects the condition of the parking brake switch assembly. WIRING DIAGRAM 
PROCEDURE
(a) Using the Techstream, read the Data List. Click here
OK: Normal condition listed above are displayed.
(a) Remove the parking brake switch assembly. Click here (b) Inspect the parking brake switch assembly. Click here
(a) Disconnect the 3H driver side junction block assembly connector. (b) Disconnect the A5 parking brake switch assembly connector. (c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(b) Remove the main body ECU (multiplex network body ECU) from the driver side junction block assembly. Click here (c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
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Toyota Tundra Service Manual > Pre-collision System: Heater Circuit (C1AAE)
DESCRIPTION If the forward recognition camera detects a malfunction in the camera heater (forward recognition hood) circuit, it will output a malfunction signal to the millimeter wave radar sensor assembly via CAN communication and DTC C1AAE will be stored. DTC No. Detection Item DTC Detection Condi ...
