SERVICE INFORMATION FOR ELECTRICAL INCIDENT
Work flow

| STEP | DESCRIPTION | |
| STEP 1 | Get detailed information about the conditions and the
environment when the incident occurred.
The following are key pieces of information required to make a good analysis: |
|
| WHAT | Vehicle Model, Engine, Transmission/Transaxle and the System (i.e. Radio). | |
| WHEN | Date, Time of Day, Weather Conditions, Frequency. | |
| WHERE | Road Conditions, Altitude and Traffic Situation | |
| HOW | System Symptoms, Operating Conditions (Other Components
Interaction).
Service History and if any After Market Accessories have been installed. |
|
| STEP 2 | Operate the system, road test if necessary.
Verify the parameter of the incident. If the problem cannot be duplicated, refer to “Incident Simulation Tests”. |
|
| STEP 3 | Get the proper diagnosis materials together including:
Identify where to begin diagnosis based upon your knowledge of the system operation and the customer comments. |
|
| STEP 4 | Inspect the system for mechanical binding, loose
connectors or wiring damage.
Determine which circuits and components are involved and diagnose using the Power Supply Routing and Harness Layouts. |
|
| STEP 5 | Repair or replace the incident circuit or component. | |
| STEP 6 | Operate the system in all modes. Verify the system works properly under all conditions. Make sure you have not inadvertently created a new incident during your diagnosis or repair steps. | |
Control units and electrical parts
PRECAUTIONS


Vehicle information
How to check terminalBasic inspection
COLLISION DIAGNOSIS
FOR FRONTAL COLLISION
FOR FRONTAL COLLISION : When SRS is activated in a collision
CAUTION:
Due to varying models and option levels, not all parts listed in the chart below
apply to all vehicles.
WORK PROCEDURE
Before performing any of the following steps, ensure ...
Monitor, climate, audio, phone and voice recognition systems
WARNING
Positioning of the heating or air conditioning
controls and display controls
should not be done while driving in order
that full attention may be given to
the driving operation.
Do not disassemble or modify this system.
If you do, it may result ...
U0140 lost communication (BCM)
DTC Description
DTC DETECTION LOGIC
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
U0140
LOST COMM (BCM)
(Lost Communication With Body Control Module)
When the ignition switch is ON, TCM is unable to receive the CAN
communications ...