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HVAC
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CIRCUIT
INSPECTION:
Disconnect the blower 2 pole connector
(refer on
vehicle rear AC removal process for location and
access)
and measure the current at the harness side
connecter at 3 speeds by pressing the rear blower
switch. The current measurement should as per the
table below.
SWITCH
PWM OUPUT
(DUTY CYCLE) %
BLOWER
VOLTAGE (V)
OFF
100
0
1
68
5
2
54
7
3
40
9
K. REAR BLOWER CONTROLLER
The rear blower switch controller controls the rear
blower speed according to the inputs given by the
rear blower switch
LOCATION:
Rear blower controller switch is mounted on rear ac
unit.
PIN OUT