Lexus ES: How To Proceed With Troubleshooting
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
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| 2. | CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK |
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| 3. | INSPECT AUXILIARY BATTERY VOLTAGE |
(a) Measure the auxiliary battery voltage with the power switch off.
Standard Voltage:
11 to 14 V
HINT:
If the auxiliary battery voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.
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| 4. | CHECK CAN COMMUNICATION SYSTEM |
(a) 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 |
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| 5. | CHECK FOR DTC |
(a) Check for DTCs and note any codes that are output.
Body Electrical > Active Noise Control > Trouble Codes(b) Clear the DTCs.
Body Electrical > Active Noise Control > Clear DTCs(c) Recheck for DTCs. Try to reproduce the active noise control system DTCs by duplicating the conditions indicated by the DTCs.
Body Electrical > Active Noise Control > Trouble Codes| Result | Proceed to |
|---|---|
| DTCs are not output (Problem symptom occurs) | A |
| DTCs are output | B |
| DTCs are not output (Problem symptom does not occur) | C |
| B | | GO TO DIAGNOSTIC TROUBLE CODE CHART |
| C | | USE SIMULATION METHOD TO CHECK |
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| 6. | PROBLEM SYMPTOMS TABLE |
HINT:
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 |
| B | | PERFORM TROUBLESHOOTING BASED ON PROBLEM SYMPTOM |
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| 7. | OVERALL ANALYSIS AND TROUBLESHOOTING |
(a) Terminals of ECU
Click here
(b) Data List / Active Test
Click here
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| 8. | ADJUST, REPAIR OR REPLACE |
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| 9. | CONFIRMATION TEST |
| NEXT | | END |
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Input / Output Signal Circuit
DESCRIPTION The stereo component equalizer assembly uses this circuit to send and receive signals to and from the stereo component amplifier assembly. WIRING DIAGRAM PROCEDURE 1. CHECK HARNESS
Crankshaft Position Sensor "A" No Signal (P033531)
DESCRIPTION This DTC is output when a malfunction has occurred in the engine pulse signal system from the ECM. DTC No. Detection Item DTC Detection Condition Trouble Area P033531 Cranks
Parts Location
PARTS LOCATION ILLUSTRATION *1 ECM *2 INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - ECU-B NO. 2 FUSE - ECU-IG1 NO. 4 FUSE - ECU-ACC FUSE *3 DLC3 *4 STEREO COMPONENT EQUALIZER ASSEMBLY
SEE MORE:
Freeze Frame Data
FREEZE FRAME DATA DESCRIPTION (a) Whenever a road sign assist system DTC is stored, the forward recognition camera stores the current vehicle state (ECU and sensor information) as Freeze Frame Data. CHECK FREEZE FRAME DATA (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c
A/F (O2) Sensor Signal Biased/Stuck Lean Bank 1 Sensor 1 Circuit Current Above Threshold (P219519,P219524,P219618,P219623)
DESCRIPTION Refer to DTC P003012. Click here HINT: Although the DTC titles say O2 sensor, these DTCs relate to the air fuel ratio sensor (sensor 1). DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note P219519 A/F (O2) Sensor Signal Biased/Stuck Lean Ban
