DESCRIPTION This circuit provides power to operate the clearance warning ECU assembly. WIRING DIAGRAM ![]() CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performing the following procedure. PROCEDURE
(a) Disconnect the K34 clearance warning ECU assembly connector. (b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
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Toyota Avalon Service & Repair Manual > Intelligent Clearance Sonar System(for Gasoline Model): ENG / EHV Device (C1A40)
DESCRIPTION When a EFI system malfunction signal sent by the ECM is detected by the clearance warning ECU assembly, DTC C1A40 is stored. DTC No. Detection Item DTC Detection Condition Trouble Area C1A40 ENG / EHV Device When the engine switch is on (IG), a EFI system malfunction signal is detected f ...