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
SEE MORE:
Starter Relay Circuit Short to Battery (P061512)
DESCRIPTION While the engine is being cranked, battery voltage is applied to terminal STA of the ECM.
If the ECM detects the starter control (STA) signal while the vehicle is being driven, it determines that there is a malfunction in the STA circuit. The ECM then illuminates the MIL and stores thi
Brake System (P157800)
DESCRIPTION When a malfunction in the vehicle stability control system is detected, DTC P157800 is stored.
DTC No. Detection Item
DTC Detection Condition Trouble Area
DTC Output from
P157800 Brake System
When the ignition switch is ON and the dynamic radar cruise
