Work Flow
OVERALL SEQUENCE

DETAILED FLOW
1. OBTAIN INFORMATION ABOUT SYMPTOM
Interview the customer to obtain as much information as possible about the conditions and environment under which the malfunction occurred.
>> GO TO 2
2. REPRODUCE THE MALFUNCTION INFORMATION
Check the malfunction on the vehicle that the customer describes.
Inspect the relation of the symptoms and the condition when the symptoms occur.
>> GO TO 3
3. IDENTIFY THE MALFUNCTIONING SYSTEM WITH "SYMPTOM DIAGNOSIS"
Use "Symptom diagnosis" from the symptom inspection result in step 2 and then identify where to start performing the diagnosis based on possible causes and symptoms.
>> GO TO 4
4. PERFORM THE COMPONENT DIAGNOSIS OF THE APPLICABLE SYSTEM
Perform the diagnosis with "Component diagnosis" of the applicable system.
>> GO TO 5
5. REPAIR OR REPLACE THE MALFUNCTIONING PARTS
Repair or replace the specified malfunctioning parts.
>> GO TO 6
6. FINAL CHECK
Check that malfunctions are not reproduced when obtaining the malfunction information from the customer, referring to the symptom inspection result in step 2.
Are the malfunctions corrected?
YES >> Inspection End.
NO >> GO TO 3
DTC/CIRCUIT DIAGNOSIS
SystemSystem Diagram System Description BASIC OPERATION Power window system is activated by power window switch when ignition switch turns ON. Power window main switch opens/closes all door ...
U0140 Lost communication (BCM)
Description
CAN (Controller Area Network) is a serial communication line for real-time
application. It is an on-vehicle multiplex
communication line with high data communication speed and excellent malfunction
detection ability.
Many electronic control units are equipped onto a vehicle, and ...
Tire pressure monitoring system
TIRE PRESSURE MONITORING SYSTEM : System Diagram
TIRE PRESSURE MONITORING SYSTEM : System
Description
The BCM has pressure judgment and trouble diagnosis functions. When the
BCM detects low inflation pressure
or another unusual symptom, the low tire pressure warning lamp in the
c ...