On-vehicle Inspection ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT MAIN BODY ECU (ACC RELAY)  (a) Measure the resistance of the ACC relay circuit. (1) Measure the resistance according to the value(s) in the table below. Standard Resistance:
If the result is not as specified, replace the main body ECU. |
Toyota Tundra Service Manual > Theft Deterrent System: Security Horn Circuit
DESCRIPTION When the theft deterrent system is switched from the armed state to the alarm sounding state, the main body ECU (multiplex network body ECU) transmits a signal to cause the security horn to sound at intervals of 0.4 seconds. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuse ...
