RM36D0EC _59 Vehicle Exterior _171816 ACOUSTIC VEHICLE ALERTING SYSTEM _0711751 ACOUSTIC VEHICLE ALERTING SYSTEM U

ACOUSTIC VEHICLE ALERTING SYSTEM  ACOUSTIC VEHICLE ALERTING SYSTEM  TERMINALS OF ECU  


CHECK VEHICLE APPROACHING SPEAKER CONTROLLER


B345454E06
3.302,0.094 3.854,0.354 0.552,0.26 3.458,0.146 4.177,0.375 0.719,0.229 10 false A45

a.

Disconnect the A45 vehicle approaching speaker controller connector.


b.

Measure the voltage and resistance according to the value(s) in the table below.

Terminal No. (Symbol) Terminal Description Condition Specified Condition
A45-1 (IG) - Body ground IG power supply Power switch on (IG) 11 to 14 V
Power switch off Below 1 V
A45-6 (GND) - Body ground Ground Always Below 1 Ω


c.

Connect the A45 vehicle approaching speaker controller connector.


d.

Measure the check for pulses according to the value(s) in the table below.

Terminal No. (Symbol) Terminal Description Condition Specified Condition
A45-7 (SP+) - A45-8 (SP-) Vehicle approaching speaker output Vehicle approaching speaker operating A waveform synchronized with the sound is output.
(See Waveform 1)
A45-3 (CANH) - A45-6 (GND) CAN communication line Power switch on (IG) Pulse generation
A45-4 (CANL) - A45-6 (GND) CAN communication line Power switch on (IG) Pulse generation

i.
C402168E02
3.125,1.031 3.427,1.208 0.302,0.177 10 false GND

Waveform 1

Item Condition
Tester Connection A45-7 (SP+) - A45-8 (SP-)
Tool Setting 1 V/DIV., 500 ms./DIV.
Condition Vehicle approaching speaker operating