If some DTCs are displayed at the same time, perform inspections one by one based on the following priority chart.

Priority	Detected items (DTC)
1	U1000: CAN COMM CIRCUIT U1010: CONTROL UNIT (CAN)
2	B257B: AMB TEMP SEN (SHORT) B257C: AMB TEMP SEN (OPEN) B2578: IN CAR SENSOR (OUT OF RANGE[LOW]) B2579: IN CAR SENSOR (OUT OF RANGE[HI]) B2581: EVAP TEMP SEN (SHORT) B2582: EVAP TEMP SEN (OPEN) B2630: SUNLOAD SEN (SHORT) B2631: SUNLOAD SEN (OPEN) B2632: DR AIRMIX ACTR (SHORT) B2633: DR AIRMIX ACTR (OPEN) B2634: PASS AIRMIX ACTR (SHORT) B2635: PASS AIRMIX ACTR (OPEN) B2636: DR VENT DOOR FAIL B2637: DR B/L DOOR FAIL B2638: DR D/F1 DOOR FAIL B2639: DR DEF DOOR FAIL B263D: FRE DOOR FAIL B263E: 20P FRE DOOR FAIL B263F: REC DOOR FAIL B2654: D/F2 DOOR FAIL B2655: B/L2 DOOR FAIL B2656: BTC FRE DOOR FAIL