Checking the air conditioning compressor control unit

The A/C compressor control unit wiring connector is shown in fig. 15.18. Checking the air conditioning compressor control unit is shown in Table 15.7.

Table 15.7. Checking the air conditioning compressor control unit

Terminal	Part to be tested	Check condition	Terminal voltage
1	Output from the control unit to the air conditioning compressor relay	A/C Relay: Off	Battery voltage
		A/C Relay: On	0 V
2	Input from the air conditioner switch to the control unit	A/C Relay: Off	0 V
		A/C Relay: On	Battery voltage
3	Connection on «mass»	Always	0 V