WINDSHIELD DEICER SYSTEM TERMINALS OF ECU


  1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY (for Automatic Air Conditioning System)

    B003PHYE14

    1. Disconnect the G37 air conditioning amplifier assembly connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      G37-1 (IG+) - Body ground G - Body ground Power source (IG) Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      G37-21 (B) - Body ground W - Body ground Battery power supply Always 11 to 14 V
      G37-14 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the G37 air conditioning amplifier assembly connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      G37-18 (FDEF) - Body ground P - Body ground Deicer signal Ignition switch ON, defogger switch (deicer switch) off Below 1 V
      Ignition switch ON, defogger switch (deicer switch) on 11 to 14 V