WINDSHIELD DEICER SYSTEM TERMINALS OF ECU


  1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY

    A01WXV2N27

    1. Disconnect the O9 air conditioning amplifier assembly connector.

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

      Tech Tips

      Measure the values on the wire harness side with the connector disconnected.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      O9-5 (IG+) - O9-1 (GND) R - BR Power source (IG) Power switch on (IG) 11 to 14 V
      O9-5 (IG+) - O9-1 (GND) R - BR Power source (IG) Power switch off Below 1 V
      O9-6 (+B1) - O9-1 (GND) L - BR Auxiliary battery power supply Power switch off 11 to 14 V
      O9-1 (GND) - Body ground BR - Body ground Ground Always Below 1 Ω

    3. Reconnect the O9 air conditioning amplifier assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      O9-24 (FDEF) - O9-1 (GND) G - BR Wiper Deicer signal Power switch on (IG), Front wiper deicer switch off 11 to 14 V
      O9-24 (FDEF) - O9-1 (GND) G - BR Wiper Deicer signal Power switch on (IG), Front wiper deicer switch on Below 2.2 V
      O9-17 (SWL2) - O9-1 (GND) R - BR Front wiper deicer switch indicator signal Power switch on (IG), Front wiper deicer switch off 11 to 14 V
      O9-17 (SWL2) - O9-1 (GND) R - BR Front wiper deicer switch indicator signal Power switch on (IG), Front wiper deicer switch on Below 1 V
      O10-28 (SW6) - O9-1 (GND) V - BR Front wiper deicer switch signal Power switch on (IG), Front wiper deicer switch off 11 to 14 V
      O10-28 (SW6) - O9-1 (GND) V - BR Front wiper deicer switch signal Power switch on (IG), Front wiper deicer switch on Below 1 V