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TROUBLESHOOTING AUTOMATIC AIR CONDITIONER 55B-5 DIAGNOSIS PROCEDURE Step 1. M.U.T.-III data list ). • Item 01: Inside temperature sensor Q: Is the check result normal? YES : Go to Step 5. NO : Go to Step 2. Step 2. Connector check: B-15 combination AC313823AJ Harness side B-15 (B) B-28 (B) B-15 B-28 Harness side Connectors: B-15, B-28 Q: Is the check result normal? YES : Go to Step 3. NO : Repair the connector. Step 3. Check the wiring harness between B-15 AC313823AJ Harness side B-15 (B) B-28 (B) B-15 B-28 Harness side Connectors: B-15, B-28 • Check the sensor signal line and earth line for open or short circuit. Q: Is the check result normal? YES : Go to Step 4. NO : Repair the wiring harness. Step 4. Check the interior temperature sensor. Q: Is the check result normal? YES : Go to Step 5. NO : Replace the interior temperature sensor. Step 5. Check whether the diagnosis code is Q: Is the diagnosis code set? YES : Replace the combination meter (meter and A/C-ECU). NO : The trouble can be an intermittent Main Index Group TOC |