NO COOL AIR 2. TROUBLESHOOTING HINTS: A/C compressor system malfunction - Step 2 or A/C switch system malfunction - Step 3, 4 • STEP INSPECTION ACTION securely in proper position. 19 Verify that expansion valve heat-sensing tube within cooling unit is positioned securely and correctly is expansion valve heatsensing tube within cooling unit securely installed in proper position? Yes Replace expansion valve, then go to next step. (Since valve opens too much, replacement is necessary.) No Install heat-sensing tube securely in proper position, then go to next step. 20 Verify that malfunction symptom occurs after repair does cool air blow out? (Are results of refrigerant system performance test okay?) Yes Troubleshooting completed. Explain repairs to customer. No Recheck malfunction symptoms, then repeat from step 1 if malfunction recurs. STEP INSPECTION ACTION 1 Inspect air blow out Does air blow out? Yes Go to next step No Go to step 1 of troubleshooting indexes No. 1, 2 2 Inspect a/c compressor operation Start engine Turn both A/C switch and blower switch on. Does A/C compressor operate? Yes Go to next step No Go to next step 3 Inspect a/c switch indicator light Does a/c switch indicator light illuminate Yes Go to step 5. NO Go to next step. 4 Inspect a/c switch Inspect A/C switch is it okay? Yes Inspect wiring harness between climate control unit and resistor. No Replace climate control unit. 5 Inspect a/c relay (Coil-side) Inspect A/C relay. Is it okay? Yes Repair wiring harness between A/C relay and PCM (Terminal S). No Replace A/C relay. 6 Inspect a/c relay (Switch-side) Inspect A/C relay. Is it okay? Yes Install A/C relay, then go to next step. No Replace A/C relay. 7 Verify whether malfunction is in magnetic clutch and thermal protector or wiring harness (Between a/c relay and magnetic clutch) Test voltage at magnetic clutch connector terminal A (A/C control signal). Is voltage approximately 12 V? Yes Inspect magnetic clutch, If magnetic clutch is normal Recheck malfunction symptoms, then repeat from Step 1 if malfunction recurs. If magnetic clutch is malfunctioning: Replace compressor, then go to next step. FATC 47
RkJQdWJsaXNoZXIy MTIwNTUz