A/C AMPLIFIER ASSEMBLY

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

• Voltage:
• LHD models:

• Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
  SW-5 (J59-2) - Body ground	LG - Body ground	Input climate control signal (Driver side)	Always	10 to 14 V
  SW-4 (J59-3) - Body ground	R - Body ground	Input climate control signal (Passenger side)	Always	10 to 14 V
  S5-4 (J59-7) - Body ground	BR - Body ground	GND	Engine switch on (IG)	4 to 6 V
  SG-4 (J59-10) - Body ground	GR - Body ground	Power supply	Always	10 to 14 V

• RHD models:

• Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
  SW-5 (J59-3) - Body ground	LG - Body ground	Input climate control signal (Driver side)	Always	10 to 14 V
  SW-4 (J59-2) - Body ground	R - Body ground	Input climate control signal (Passenger side)	Always	10 to 14 V
  S5-4 (J59-7) - Body ground	BR - Body ground	GND	Engine switch on (IG)	4 to 6 V
  SG-4 (J59-10) - Body ground	GR - Body ground	Power supply	Always	10 to 14 V

• Standard:
• LHD models:

• Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
  ROUT (J59-8) - Body ground	W - Body ground	Output climate control signal (Front RH side)	Engine switch on (IG)	Pulse generation
  LOUT (J59-16) - Body ground	Y - Body ground	Output climate control signal (Front LH side)	Engine switch on (IG)	Pulse generation

• RHD models:

• Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
  ROUT (J59-16) - Body ground	W - Body ground	Output climate control signal (Front RH side)	Engine switch on (IG)	Pulse generation
  LOUT (J59-8) - Body ground	Y - Body ground	Output climate control signal (Front LH side)	Engine switch on (IG)	Pulse generation

Waveform (Reference): Using an oscilloscope:

Item	Condition
Tool setting	2 V/DIV., 500 μsec/DIV.,
Vehicle condition	Turn the engine switch on (IG)