Toyota Sienna Service Manual: Horn system

Horn

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Horn relay

INSPECTION 1. INSPECT HORN RELAY  Remove the horn relay from the instrument panel J/ B.  Measure the horn relay continuity. Standard ...

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How to proceed with troubleshooting
NOTICE: DTCs for the CAN communication system are as follows: U0073, U0100, U0122, U0123, U0124, U0126 and U1101. HINT: If U0235 or U1102 is output alone, the CAN communication is normal 1 CHECK AND CLEAR DTCS HINT: CAN communication DTCs are output when there is an open or short in any ...

Reclining Motor Circuit
DESCRIPTION The fold seat control ECU receives a switch operation signal from the power rear no. 2 seat switch and the fold seat switch, and activates the reclining motor. At this time, the Hall IC (seatback position sensor) detects the actuation of the seatback and sends a seatback actuation ...

No Signal from Transmitter ID1
DESCRIPTION The tire pressure warning valve and transmitters that are installed in the tire and wheel assemblies measure the air pressure of the tires. The measured values are transmitted to the tire pressure warning antenna and receiver on the body as radio waves and then sent to the tir ...