CLIMATE CONTROL SEAT SYSTEM TERMINALS OF ECU

CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY

1. Disconnect the G65 air conditioning amplifier assembly connector.

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

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   G65-2 (IG+) - Body ground	LA-R - Body ground	IG power supply	Power switch on (IG)	11 to 14 V
   			Power switch off	Below 1 V
   G65-4 (GND) - Body ground	LA - Body ground	Ground	Always	Below 1 Ω

3. Reconnect the G65 air conditioning amplifier assembly connector.

4. Check for pulses according to the value(s) in the table below.

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   G65-23 (ROUT) - Body ground	BE - Body ground	Climate control blower control signal	Power switch on (IG) Ventilation volume switch RH on	Pulse generation (See waveform)
   G65-24 (LOUT) - Body ground	R - Body ground	Climate control blower control signal	Power switch on (IG) Ventilation volume switch LH on	Pulse generation (See waveform)
   G63-14 (SVDB)* - Body ground	R - Body ground	Climate control blower control signal	Power switch on (IG) Ventilation volume switch RH on	Pulse generation (See waveform)
   G63-26 (SVPB)* - Body ground	R - Body ground	Climate control blower control signal	Power switch on (IG) Ventilation volume switch LH on	Pulse generation (See waveform)

   
   

   • *: w/ Rear Climate Control Seat

   
   
   1. 

      Waveform (Reference):

      Table 1. Measurement Condition

      Item	Content
      Tester Connection	G65-23 (ROUT) - Body ground G65-24 (LOUT) - Body ground G63-14 (SVDB)* - Body ground G63-26 (SVPB)* - Body ground
      Tool Setting	1 V/DIV., 1 ms/DIV.
      Vehicle Condition	Power switch on (IG) Ventilation volume switch on

      
      

      • *: w/ Rear Climate Control Seat