A/C CUT-OFF CONTROL OPERATION [ZY, Z6]


id0140a0103700


Operation Condition

•  The PCM stops energization to the A/C relay when any of the following conditions are met:

A/C cut-off control operation conditions

Operation condition

A/C relay non-energization period

Purpose

At engine start
Approx. 4 s
Improved startability
At drive-away
Approx. 3 s
Improved drive-away performance
During acceleration (throttle valve opening angle 50% or more)
Approx. 5 s
Improved acceleration performance
When engine coolant temperature is 113°C {235°F}
Repeatedly turns on and off every 10 s until the engine coolant temperature is less than 107°C {225°F}
Improved engine reliability
When temperature in PCM is 110°C {225°F}
Repeatedly turns on and off every 10 s until the temperature in PCM is less than 107°C {225°F}
Improved engine reliability
Engine coolant temperature is 117°C {243°F} or more
Until engine coolant temperature is less than 110°C {230°F}
Improved engine reliability
At high engine speed
(engine speed 6,900 or more)
Until engine speed decreases to less than 6,400 rpm
Improved A/C compressor reliability
When temperature in PCM is 115°C {239°F} or more
Until temperature is PCM decreases to less than 112°C {234°F}
PCM protection