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 BATTERY VOLTAGE |
(a) Measure the battery voltage.
Standard Voltage:
11 to 14 V
HINT:
If the battery voltage is below 11 V, recharge or replace the 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 |
READ NEXT:
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:
Microphone Circuit Open (B157213)
DESCRIPTION This DTC is stored when the DCM (telematics transceiver) detects a malfunction in the telephone microphone assembly circuit. DTC No. Detection Item DTC Detection Condition Trouble Area B157213 Microphone Circuit Open Current at terminal MCVD is lower than the malfunction
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspect
