Flow of Diagnosis

Flow Of Diagnosis:

VEHICLE REPAIR HISTORY

Repair History:

DRIVEABILITY WORKSHEETS

Driveability Worksheet:

1. Utilize the VEHICLE REPAIR HISTORY and DRIVEABILITY WORKSHEETS in this section to provide better communication between the customer and the mechanic. This provides for more accurate and timely vehicle diagnosis/repair.

2. Check any Technical Service Bulletins that may apply to the vehicle being serviced. These bulletins may contain important information regarding warranty, recalls, revised service procedures, etc.

3. The Electronic Fuel Injection System is controlled by the Toyota Computer Control System (TCCS). All diagnostic information for TCCS is located in COMPUTERIZED ENGINE CONTROLS. The procedures for extracting and clearing trouble codes are in ON-BOARD DIAGNOSTICS under TESTING PROCEDURES.

4. When codes are indicated, component diagnosis can be quickly and easily identified. Locate the fault code number and follow the diagnosis to the particular malfunctioning component.

5. This list of symptoms and their possible causes is used to aid in diagnosing intermittent problems or failures which do not store trouble codes in the computer memory. DIAGNOSIS BY SYMPTOM is located under TESTING PROCEDURES.