Lexus NX: 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 suspected areas in the order they are listed. Replace parts as necessary.
Airbag System| Symptom | Suspected Area | Link |
|---|---|---|
| SRS warning light goes off after primary check, but then comes on | SRS Warning Light Circuit | |
| When power switch is turned on (IG), SRS warning light sometimes comes on after approximately 6 seconds | SRS Warning Light Circuit | |
| SRS warning light always comes on even when no DTCs are output | SRS Warning Light Circuit | |
| When power switch is turned on (IG), SRS warning light does not come on | SRS Warning Light Circuit | |
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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
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Turn the power switch off. (b) Connect the Techstream to the DLC3. (c) Turn the power switch on (IG). (d) Turn the Techstream on. (e) Enter the following menus: Body El
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Short in Side Squib (RH) Circuit (B1820-B1823)
DESCRIPTION The front side squib RH circuit consists of the airbag ECU assembly and front seat airbag assembly RH. This circuit instructs the SRS to deploy when deployment conditions are met. These DTCs are stored when a malfunction is detected in the front side squib RH circuit. DTC No. Detect
Initialization
INITIALIZATION NOTICE:
The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during headlight ECU sub-assembly LH removal/installation are shown below. Performed Work or System Condition Ne
