#
A/C CUT-OFF CONTROL OPERATION

BHE014000140T44

## Operation

• The A/C cut-off control includes the following: A/C cut-off at wide throttle valve opening angle and A/C cut-off at standing start acceleration.

## A/C Cut-off at Wide Throttle Valve Opening Angle

### Operation condition

  • When the throttle valve opening angle exceeds upper, A/C cut-off is activated for approx. 5 s to improve acceleration performance.
  • When the throttle valve opening angle is lower or less, A/C cut-off ends.
  • When A/C cut-off at wide throttle valve opening angle ends within approx. 5 s and the throttle valve opening angle exceeds upper again, A/C cut-off is inhibited to prevent deterioration of the A/C function.

1 | Throttle valve opening angle
2 | A/C relay signal
3 | A/C cut time
4 | Upper
5 | Lower
6 | ON
7 | OFF
8 | 5 s
9 | A/C inhibit

## A/C Cut-off at Standing Start Acceleration

• When accelerated from a standing start, A/C cut-off is activated.

## A/C Cut-off at High ECT

• When the ECT exceeds 110 °C {230°F} during the A/C operation, the A/C relay alternately turns on and off approx. every 10 s to protect the engine and to prevent deterioration of the A/C function.

1 | A/C switch
2 | ECT
3 | A/C relay
4 | ON
5 | OFF
6 | 110°C {230°F}
7 | 10 s