Lexus NX: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use these procedures to troubleshoot the airbag system.
- *: Use the Techstream.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
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| 2. | INSPECT AUXILIARY BATTERY VOLTAGE |
(a) Measure the auxiliary battery voltage with the power switch off.
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding.
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| 3. | CHECK CAN COMMUNICATION SYSTEM* |
(a) Check for DTCs.
Click here .gif)
| DTC is output | .gif) | GO TO CAN COMMUNICATION SYSTEM |
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| 4. | SRS WARNING LIGHT CHECK |
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| 5. | CHECK DTC (Present and Past DTCs)* |
(a) Check for DTCs.
Click here
| DTC is not output | | GO TO PROBLEM SYMPTOMS TABLE |
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| 6. | DIAGNOSTIC TROUBLE CODE CHART |
(a) Diagnostic Trouble Code Chart.
Click here
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| 7. | CIRCUIT INSPECTION* |
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| 8. | REPAIR |
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| 9. | CLEAR DTC (Present and Past DTCs)* |
(a) Clear the DTCs.
Click here
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| 10. | CHECK DTC (Present and Past DTCs)* |
(a) Check for DTCs.
Click here
| DTC is output | | GO TO DIAGNOSTIC TROUBLE CODE CHART |
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| 11. | CONFIRMATION TEST |
| NEXT | | END |
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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 pr
Terminals Of Ecu
TERMINALS OF ECU AIRBAG ECU ASSEMBLY Terminal No. Terminal Symbol Destination I58-1 P2+ Instrument panel passenger airbag assembly (Front passenger side squib 2nd step) I58-2 P2-
Diagnosis System
DIAGNOSIS SYSTEM SYMPTOM SIMULATION HINT: The most difficult case in troubleshooting is when no problem symptoms occur. In such a case, a thorough problem analysis must be carried out. A simulation of
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Inspection
INSPECTION PROCEDURE 1. INSPECT EGR VALVE ASSEMBLY (a) Measure the resistance. (1) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition 5 (+B2) - 4 (EGR1) 20°C (68°F) 18 to 22 Ω 5 (+B2) - 6
Inspection
INSPECTION PROCEDURE 1. INSPECT REAR COMBINATION LIGHT ASSEMBLY LH (a) Apply battery voltage to the connector and check the light illumination condition. OK: Battery Connection Specified Condition Positive (+) → 1 (TRN) Negative (-) → 4 (E) Turn Signal light illuminates Positi
