Window Defogger System

WINDOW / GLASS: WINDOW DEFOGGER SYSTEM: TERMINALS OF ECU

1. CHECK AIR CONDITIONING AMPLIFIER





(a) Disconnect the H24 air conditioning amplifier connector.

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





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

(c) Reconnect the H24 air conditioning amplifier connector.

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





* If the result is not as specified, the air conditioning amplifier may have a malfunction.

(e) Waveform 1 (Reference) : Using an oscilloscope









HINT
The waveform varies depending on the CAN communication signal.

(f) Waveform 2 (Reference) : Using an oscilloscope









HINT
The waveform varies depending on the CAN communication signal.

2. CHECK INTEGRATION CONTROL AND PANEL





(a) Disconnect the H45 integration control and panel connector.

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





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

(c) Reconnect the H45 integration control and panel connector.

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





* If the result is not as specified, the integration control and panel may have a malfunction.