Lexus ES: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
*: Use the Techstream.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
.gif)
| 2. | CUSTOMER PROBLEM ANALYSIS |
|
| 3. | CONNECT TECHSTREAM TO DLC3* |
HINT:
If the display indicates a communication malfunction, inspect the DLC3.
When any CAN communication system DTCs are output, perform troubleshooting on the CAN communication system first.
|
| 4. | CHECK DTC AND FREEZE FRAME DATA* |
(a) Check for DTCs.
Powertrain > Engine > Trouble Codes(b) Check for freeze frame data.
Click here .gif)
HINT:
Record or print DTCs and freeze frame data if necessary.
|
| 5. | CLEAR DTC AND FREEZE FRAME DATA* |
(a) Clear the DTCs and freeze frame data.
Powertrain > Engine > Clear DTCs
|
| 6. | CONDUCT VISUAL INSPECTION |
|
| 7. | SELECT CHECK MODE DIAGNOSIS* |
(a) Switch the ECM from normal mode to check mode.
Powertrain > Engine > Utility| Tester Display |
|---|
| Check Mode |
|
| 8. | CONFIRM PROBLEM SYMPTOMS |
(a) Confirm problem symptoms.
HINT:
If the engine does not start, first perform the "Check DTC" procedure and "Conduct Basic Inspection" procedure below.
| Result | Proceed to |
|---|---|
| Malfunction does not occur | A |
| Malfunction occurs | B |
| B | .gif) | GO TO STEP 10 |
|
| 9. | SIMULATE SYMPTOMS |
HINT:
Refer to Symptom Simulation.
Click here
|
| 10. | CHECK DTC* |
(a) Check for DTCs.
Powertrain > Engine > Trouble Codes| Result | Proceed to |
|---|---|
| DTCs are output | A |
| DTCs are not output | B |
| B | | GO TO STEP 12 |
|
| 11. | REFER TO DTC CHART |
HINT:
Refer to Diagnostic Trouble Code Chart.
Click here
|
| 12. | CONDUCT BASIC INSPECTION |
(a) Conduct basic inspection.
Click here
| Result | Proceed to |
|---|---|
| Malfunctioning parts not confirmed | A |
| Malfunctioning parts confirmed | B |
| B | | GO TO STEP 17 |
|
| 13. | REFER TO PROBLEM SYMPTOMS TABLE |
HINT:
Refer to Problem Symptoms Table.
Click here
| Result | Proceed to |
|---|---|
| Malfunctioning circuit confirmed | A |
| Malfunctioning parts confirmed | B |
| B | | GO TO STEP 17 |
|
| 14. | CHECK ECM POWER SOURCE CIRCUIT |
(a) Check the ECM power source circuit.
Click here
|
| 15. | CONDUCT CIRCUIT INSPECTION |
| Result | Proceed to |
|---|---|
| Malfunction not confirmed | A |
| Malfunction confirmed | B |
| B | | GO TO STEP 18 |
|
| 16. | CHECK FOR INTERMITTENT PROBLEMS |
(a) Check for intermittent problems.
Click here
|
| 17. | CONDUCT PARTS INSPECTION |
|
| 18. | IDENTIFY PROBLEM |
|
| 19. | ADJUST AND/OR REPAIR |
|
| 20. | CONDUCT CONFIRMATION TEST |
| NEXT | | END |
READ NEXT:
Check For Intermittent Problems
CHECK FOR INTERMITTENT PROBLEMS HINT: Inspect the vehicle ECM using check mode. Intermittent problems are easier to detect with the Techstream when the ECM is in check mode. In check mode, the ECM use
Basic Inspection
CAUTION / NOTICE / HINT When a malfunction is not confirmed by the DTC check, troubleshooting should be carried out for all circuits considered to be possible causes of the problem. In many cases, by
Registration
REGISTRATION CAUTION / NOTICE / HINT PROCEDURE 1. VIN (VEHICLE IDENTIFICATION NUMBER) NOTICE: The Vehicle Identification Number (VIN) must be written to a replacement ECM. HINT: The VIN is a 17-digit
SEE MORE:
Freeze Frame Data
FREEZE FRAME DATA CHECK FREEZE FRAME DATA HINT: Whenever an active noise control system DTC is stored, the stereo component equalizer assembly stores the current vehicle state as freeze frame data. (a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Turn the Techstream on
Removal
REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during sliding roof housing removal/installation are shown below. Necessary Procedure After Parts Removed/Insta
