Lexus NX: Diagnostic Trouble Code Chart
Lexus NX Service Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Immobiliser System / Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
Immobiliser System| DTC No. | Detection Item | Link |
|---|---|---|
| B2779 | Engine Starter Communication Malfunction | |
| B2784 | Antenna Coil Open / Short | |
| B278A | Short to GND in Immobiliser System Power Source Circuit | |
| B2790 | ID BOX EEPROM Malfunction | |
| B2799-790 | Engine Immobiliser System Malfunction | |
| B279A-186 | Engine Immobiliser System Communication Line High Fixation | |
| B279C-185 | Engine Immobiliser System Presence Detection | |
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Engine Starter Communication Malfunction (B2779)
DESCRIPTION If the remote engine start ECU does not respond to the certification ECU (smart key ECU assembly) or the remote engine start ID is not registered*, this DTC is stored. If communication bet
Antenna Coil Open / Short (B2784)
DESCRIPTION When an open or short circuit is detected in the transponder key amplifier coil built into the power switch, the certification ECU (smart key ECU assembly) stores this DTC. This DTC is als
Short to GND in Immobiliser System Power Source Circuit (B278A)
DESCRIPTION When there is a short to GND in the power supply for the transponder key amplifier of the power switch, the certification ECU (smart key ECU assembly) stores this DTC. DTC No. Detecti
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Rear Door Courtesy Switch Circuit
DESCRIPTION The fold seat control ECU receives the switch operation signal, driving condition signal and rear door open/close signal. Then the fold seat control ECU actives the rear seat according to these signals. WIRING DIAGRAM PROCEDURE 1. INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY
Removal
REMOVAL PROCEDURE 1. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM Click here 2. REMOVE AIR CONDITIONER PRESSURE SENSOR (a) Disconnect the connector. (b) Using a 27 mm deep socket wrench, remove the air conditioner pressure sensor. NOTICE: Seal the openings of the removed parts
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