Pinout Values and Diagnostic Parameters

VEHICLE PROXIMITY NOTIFICATION SYSTEM: VEHICLE PROXIMITY NOTIFICATION SYSTEM: TERMINALS OF ECU

1. CHECK VEHICLE APPROACHING SPEAKER CONTROLLER





(a) Disconnect the H138 vehicle approaching speaker controller connector.

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





If the result is not as specified, there may be a malfunction in the wire harness.

(c) Reconnect the H138 vehicle approaching speaker controller connectors.

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





If the result is not as specified, there is a problem in the vehicle approaching speaker controller or wire harness.

(1) Waveform 1 (Reference):









HINT
If the vehicle speed increases, width (A) becomes narrower.