Toyota Camry (XV70): How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the LIN communication system.
- *: Use the Techstream.
PROCEDURE
|
1. | VEHICLE BROUGHT TO WORKSHOP |
|
.gif)
| 2. |
CUSTOMER PROBLEM ANALYSIS |
HINT:
- In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
- Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
- The following 5 items are important points for problem analysis:
| What |
Vehicle model, system name |
| When |
Date, time, occurrence frequency |
|
Where | Road conditions |
|
Under what conditions? | Driving conditions, weather conditions |
|
How did it happen? | Problem symptoms |
|
| 3. |
PRE-CHECK |
(a) Measure the battery voltage.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
(b) Check the fuses and relays.
(c) Check the connectors and terminals to make sure that there are no abnormalities such as a loose connection or deformation.
|
| 4. |
INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Using the Techstream, check for CAN communication system DTCs.
Click here
.gif)
|
Result | Proceed to |
|---|---|
|
CAN DTCs are not output |
A |
| CAN DTCs are output |
B |
| B |
.gif) | GO TO CAN COMMUNICATION SYSTEM |
|
| 5. |
INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* |
(a) Using the Techstream, check for LIN communication system DTCs.
Click here
|
Result | Proceed to |
|---|---|
|
LIN DTCs are not output |
A |
| LIN DTCs are output |
B |
| B |
| GO TO DIAGNOSTIC TROUBLE CODE CHART
|
|
| 6. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Terminals of ECU
Click here
(b) Data List / Active Test
Click here
|
| 7. |
REPAIR OR REPLACE |
|
| 8. |
CONFIRMATION TEST |
| NEXT | | END |
READ NEXT:
Terminals Of Ecu
TERMINALS OF ECU CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
(a) Disconnect the MB main body ECU (multiplex network body ECU) connector.
Click he
Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION The main body ECU (multiplex network body ECU) and certification ECU (smart key ECU assembly) control the LIN communication system. LIN communication system data and Diagn
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON. (c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body or Sm
SEE MORE:
Sending Malfunction (Navigation to APGS) (U0073,U0100,U0129,U0140,U0155,U0164,U0198,U023B,U0265,U1110)
DESCRIPTION These DTCs are stored when a malfunction occurs in the CAN communication circuit.
DTC No. Detection Item
DTC Detection Condition Trouble Area
U0073 Sending Malfunction (Navigation to APGS)
CAN bus connection error
CAN communication system
U010
Components
COMPONENTS ILLUSTRATION
*1 COWL SIDE TRIM SUB-ASSEMBLY LH
*2 FRONT DOOR OPENING TRIM WEATHERSTRIP LH
*3 FRONT DOOR SCUFF PLATE LH
*4 HOOD LOCK CONTROL LEVER SUB-ASSEMBLY
*5 INSTRUMENT SIDE PANEL LH
*6 NO. 1 INSTRUMENT PANEL SUB-ASSEMBLY
