DESCRIPTION When the brake pedal is depressed, the stop light switch assembly sends a signal to the ECM. When the ECM receives this signal, it cancels the dynamic radar cruise control. The fail-safe function operates to enable normal driving even if there is a malfunction in the stop light signal circuit. The cancellation condition occurs when voltage is applied to the terminal STP. When the brake is applied, voltage is normally applied to the terminal STP of the ECM through the STOP fuse and the stop light switch assembly, and the ECM turns the dynamic radar cruise control system off.
WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
PROCEDURE
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(c) Measure the voltage according to the value(s) in the table below. Standard Voltage:
(d) Connect the A33 stop light switch assembly connector.
(a) Inspect the stop light switch assembly. Click here
(a) Disconnect the A18 ECM connector. (b) Disconnect the A33 stop light switch assembly connector. (c) Disconnect the A28 skid control ECU (brake actuator assembly) connector. (d) Disconnect the K10 certification ECU (smart key ECU assembly) connector. (e) Disconnect the G21 shift lock control ECU (shift lock control unit assembly) connector. (f) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(g) Connect the G21 shift lock control ECU (shift lock control unit assembly) connector. (h) Connect the K10 certification ECU (smart key ECU assembly) connector. (i) Connect the A28 skid control ECU (brake actuator assembly) connector. (j) Connect the A33 stop light switch assembly connector. (k) Connect the A18 ECM connector.
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Audio And Visual System(for Hv Model): Main Body ECU Vehicle Information Reading/Writing Process Malfunction (B15F6)
DESCRIPTION This DTC is stored when items controlled by the main body ECU (multiplex network body ECU) cannot be customized via the audio and visual system vehicle customization screen. HINT: The main body ECU (multiplex network body ECU) controls the items for the following systems that are customi ...