FATC 29 NO COOL AIR TROUBLESHOOTING HINTS A/C compressor system malfunction - Step 2 or A/C switch system malfunction - Step 3, 4 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 Ignition 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 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 that malfunction symptom occurs after repair Does cool air blow out? (Is refrigerant system performance test result correct?) Yes Troubleshooting completed. Explain repairs to customer. No Recheck malfunction symptoms, then repeat from Step 1 if malfunction recurs.
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