
HEATER AND MANUAL AIR CONDITIONER –
Troubleshooting /
On-vehicle Service
55-6
INSPECTION AT THE AUTOMATIC COMPRESSOR-ECU TERMINAL
Terminal
No.
Check item
Checking requirements
Normal condition
1
Output from ECU to A/C compressor
relay
A/C compressor relay: OFF
System voltage
relay
A/C compressor relay: ON
0 V
2
Input from A/C switch to ECU
A/C switch: OFF
0 V
A/C switch: ON
System voltage
3
Earth
Always
0 V
ON-VEHICLE SERVICE
REFRIGERANT CHARGING
Caution
The refrigerant generates toxic gases when it is expored
to a heat source such as fire. Keep flames away from
the refrigerant. Perform refrigerant charging at a
well-ventilated place.
1.
Recommended charging tools
The following commercially available tools are recommended
for discharging and charging refrigerant.
D
Gas charging set [No. EA95 (R134a)]
D
Gas charging set case [No. EA101CS-2]
D
Gauge manifold [No. EA101N-1]
D
Charging valve [No. EA108N]
D
Adapter valve [No. EA104AD-3]
NOTE
The adapter valve opens when the handle is turned
clockwise and closes when it is turned counter-clockwise.
D
Quick joint (for low pressure) [No. EA413L]
D
Quick joint (for high pressure) [No. EA413H]
D
Charging hose (red) [No. EA104N-1]
D
Charging hose (blue) [No. EA104N-2]
D
Charging hose (yellow) [No. EA104N-3]
D
Vacuum pump [No. EA112A]
D
Vacuum pump adaptor [No. EA112X]
Gauge manifold
Adapter valve
(for low pressure)
Charging hose
Vacuum
pump adaptor
Quick joint
(for low pressure)
Charging valve
Quick joint
(for high pressure)
Vacuum pump