Troubleshooting Checklists

How To Use The Checklists
Determine symptoms of the problem based on customer's complaints. Refer to the fuse checklist an~ match the symptoms obtained from the customer with those listed in the table. Check the appropriate fuse. If the fuse is OK, operate the system. Determine the general area of the problem; for example, noise, airflow, or temperature.

Look at the main checklist and locate the general problem area (first column). Follow each step of the instructions for the specific system (second column).

If the system does not operate properly (third column), determine the symptoms and corresponding flow-chart number (fourth and fifth columns). Refer to the appropriate flowchart and troubleshoot the system.


Fuse Checklist
Symptom: Related fuse

When ignition switch is turned OFF and then ON again, set temperature returns to 25°C {77 °F} and AUTO indicator light turns on: ROOM 15 A

Blower motor does not operate: BLOWER 15 A, HEATER 40 A

On-board diagnostic function does not operate: RADIO 10 A, A/C 1O A

A/C compressor idle-up operates, but magnetic clutch and condenser fan do not operate: METER 15 A, AD. FAN 30 A


Main Checklist
Start and warm up the engine so that the engine coolant temperature reaches 40 - 100°C {104 - 212°F}. Keep the engine running while doing the procedures.