A/C Signal
CIRCUIT DIAGRAM
USING MULTI-USE TESTER
Step 1:
HARNESS INSPECTION
OPERATION
If the ON signal is input from the air conditioner switch, ECU turns on the air conditioner compressor relay to start the air conditioner compressor.
TROUBLESHOOTING HINTS
When idling speed does not increase for the air conditioner or when the air conditioner compressor does not run, a short-circuit or broken wire may occur in the circuit related to the air conditioner.