7130266

Air-Con Pressure Transducer

(1)

Connect GDS and select Oscilloscope menu.

(2)

Connect probe to signal line as below :

Channel A (+): Air-Con Pressure Transducer Signal line, (-): Ground

(3)

After warming up, Check signal with Air-Con working.

Specification :

A : Approx. 1.3~1.5V ( Idle & Air-Con OFF )

B : Above 1.5V ( Idle & Air-Con ON )

(4)

Is data in accordance with specification?

	▶ Check for poor connection between PCM/ECM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "Verification of Vehicle Repair" procedure.
	▶ Go to next step as below.

(5)

Return vehicle to original condition.

(6)

IG "ON".

(7)

Is the A/C compressor clutch engaged?

▶ Disconnect A/C clutch relay and check the A/C compressor clutch status.

▶ If engaged, repair open/short circuit in the A/C compressor clutch harness or replace faulty compressor clutch assembly. And go to "Verification of Vehicle Repair" procedure

▶ If disengaged, repair open/short circuit in the A/C clutch relay harness or replace faulty clutch relay. And go to "Verification of Vehicle Repair" procedure.

▶ Go to next procedure.

(8)

Start the engine to normal operating temperature.

(9)

Turn the A/C ON and OFF.

(10)

Does the A/C compressor clutch cycle ON and OFF with the selector switch?

▶ Check A/C pressure sensor for contamination, deterioration, or damage. Substitute with a known-good A/C pressure sensor and check for proper operation. If the problem is corrected, replace A/C pressure sensor and then go to "Verification of Vehicle Repair" procedure.

▶ Monitor the " A/C SWITCH & A/C COMPRESSOR" parameters on the GDS data list. Refer to "Signal Waveform & Data" in the "General Information" procedure.

▶ Turn the A/C ON and OFF

▶ Check the scantool indicate when the A/C is ON and OFF correctly.

▶ If OK, check the A/C pressure. Refer to A/C group in Workshop Manual. Repair as necessary and go to "Verification of Vehicle Repair" procedure.

▶ If NG, repair the signal from the A/C selector switch and compressor switch. Go to "Verification of Vehicle Repair" procedure.