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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Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Smart Access System with Push-button Start (for Entry Function) DTC No. Detection Item Link B27A1 Open in Driver Side Electrical Antenna Circuit B27A2 Open in Front Passenger Side Electrical Antenna Circuit B27A3 Open in Rear Door Elec
Terminals Of Ecu
TERMINALS OF ECU CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY (a) Disconnect the I50 air conditioning amplifier assembly connector. (b) Measure the voltage and resistance according to the value(s) in the table below. Tester Connection Wiring Color Terminal Description Condition Specified Co
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