Lexus ES: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the blind spot monitor system.
- *: Use the Techstream.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
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| 2. | CUSTOMER PROBLEM ANALYSIS |
HINT:
If there are any scratches or impact marks on the rear bumper, perform the blind spot monitor beam axis confirmation. If any abnormalities are found, perform the blind spot monitor sensor installation condition inspection.
|
| 3. | INSPECT AUXILIARY BATTERY VOLTAGE |
(a) Measure the auxiliary battery voltage.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, replace or recharge the auxiliary battery before proceeding to the next step.
|
| 4. | CHECK CAN COMMUNICATION SYSTEM* |
(a) Use the Techstream to check if the CAN communication system is functioning normally.
Click here .gif)
| Result | Proceed to |
|---|---|
| CAN communication system DTCs are not output. | A |
| CAN communication system DTCs are output. | B |
| B | .gif) | GO TO CAN COMMUNICATION SYSTEM |
|
| 5. | CHECK FOR DTC AND FREEZE FRAME DATA* |
(a) Refer to DTC Check / Clear for the blind spot monitor system.
Body Electrical > Blind Spot Monitor Master > Trouble Codes Body Electrical > Blind Spot Monitor Slave > Trouble Codes(b) Record or print DTCs and freeze frame data, if necessary.
Click here
| Result | Proceed to |
|---|---|
| DTCs are not output. | A |
| DTCs are output. | B |
| B | | GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
| 6. | PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table.
Click here
| Result | Proceed to |
|---|---|
| Fault is not listed in Problem Symptoms Table. | A |
| Fault is listed in Problem Symptoms Table. | B |
HINT:
If the symptom does not recur and no DTCs are output, attempt to reproduce the symptoms.
Click here
| B | | GO TO PROBLEM SYMPTOMS TABLE |
|
| 7. | PERFORM TROUBLESHOOTING BASED ON MALFUNCTION SYMPTOM* |
(a) Refer to Terminals of ECU.
Click here
(b) Refer to Diagnosis System.
Click here
(c) Refer to Data List / Active Test.
Click here
|
| 8. | ADJUST, REPAIR OR REPLACE |
| Result | Proceed to |
|---|---|
| When adjusting or repairing | A |
| When replacing | B |
| B | | GO TO STEP 10 |
|
| 9. | CLEAR DTC* |
(a) Clear the DTCs.
Click here
| NEXT | | GO TO STEP 10 |
| 10. | PERFORM BEAM AXIS INSPECTION |
(a) Enter Test Mode (refer to Blind Spot Monitor Beam Axis Inspection).
Click here
(b) Confirm the blind spot monitor beam axis display and perform the blind spot monitor beam axis adjustment.
|
| 11. | PERFORM CONFIRMATION TEST* |
| NEXT | | END |
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Parts Location
PARTS LOCATION ILLUSTRATION *1 OUTER REAR VIEW MIRROR ASSEMBLY RH *2 OUTER REAR VIEW MIRROR ASSEMBLY LH *3 BRAKE BOOSTER WITH MASTER CYLINDER ASSEMBLY - SKID CONTROL ECU *4 HYBRID
Power Source Circuit
DESCRIPTION This circuit provides power to operate the blind spot monitor sensor. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performin
Precaution
PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTICE: When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following s
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Check For Intermittent Problems
CHECK FOR INTERMITTENT PROBLEMS NOTICE:
If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation history has been read and saved, the operation history information could be lost.
The Operation History fun
Hybrid/EV Battery Stack 1 Current Interrupt Device Circuit Open (P1AC413)
DTC SUMMARY MALFUNCTION DESCRIPTION Current interrupt devices (CIDs), which mechanically shut off the high-voltage circuit, are installed in each HV battery cell to protect the HV battery from overcharge (overvoltage). The cause of this malfunction may be one of the following: Battery ECU assembly
