Toyota Yaris: Horn / Relay
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT HORN RELAY ASSEMBLY
(a) Check the resistance.
(1) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection | Condition | Specified Condition | 3 - 5 | Auxiliary battery voltage not applied between terminals 1 and 2 | 10 kΩ or higher | 3 - 5 | Auxiliary battery voltage applied between terminals 1 and 2 | Below 1 Ω | If the result is not as specified, replace the horn relay assembly. | |
Parts LocationPARTS LOCATION ILLUSTRATION
*1 LOW PITCHED HORN ASSEMBLY *2 NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY - HORN RELAY - HORN FUSE ILLUSTRATION
*1 HORN BUTTON ASSEMBLY *2 SPIRAL CABLE SUB-ASSEMBLY *3 MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) *4 POWER DISTRIBUTION BOX ASSEMBLY *5 DLC3 - - System DiagramSYSTEM DIAGRAM
Problem Symptoms TablePROBLEM SYMPTOMS TABLE NOTICE: If the main body ECU (multiplex network body ECU) is replaced, refer to the Registration...
Other information:
VEHICLE CONTROL HISTORY NOTICE: Make sure to record any output Vehicle Control History codes before clearing them and checking the Vehicle Control History again. CHECK VEHICLE CONTROL HISTORY (SEMICONDUCTOR POWER INTEGRATION ECU) (a) Read the Vehicle Control History (RoB) according to the display on the GTS...
INSTALLATION CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH and LH sides.
The procedure listed below is for the LH side.
PROCEDURE 1. INSTALL SIDE AIRBAG PRESSURE SENSOR (a) Check that the ignition switch is off. (b) Check that the cable is disconnected from the negative (-) auxiliary battery terminal...
Categories
If a key is left in the vehicle, the functions of the key left in the vehicle
are temporarily suspended to prevent theft of the vehicle.
To restore the functions, press the unlock button on the functions-suspended
key in the vehicle.
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