Lexus NX: Engine Immobiliser System Presence Detection (B279C-185)
DESCRIPTION
If a hybrid vehicle control ECU that is incompatible with the immobiliser system is installed, the hybrid vehicle control ECU stores this DTC.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Note |
|---|---|---|---|---|
| B279C-185 | Engine Immobiliser System Presence Detection | A hybrid vehicle control ECU that is incompatible with the immobiliser system is installed. (1-trip detection logic*) | Hybrid vehicle control ECU | - |
- *: Only detected while a malfunction is present.
| Vehicle Condition when Malfunction Detected | Fail-safe Function when Malfunction Detected |
|---|---|
| Hybrid control system cannot be started | - |
| DTC No. | Data List and Active Test |
|---|---|
| B279C-185 | - |
CAUTION / NOTICE / HINT
NOTICE:
- When using the Techstream with the power switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Access. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
-
Before replacing the hybrid vehicle control ECU refer to Registration.
Click here
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- After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation."
PROCEDURE
| 1. | REPLACE HYBRID VEHICLE CONTROL ECU |
(a) Replace the hybrid vehicle control ECU with a new one.
Click here
| NEXT | .gif) | END (HYBRID VEHICLE CONTROL ECU WAS DEFECTIVE) |
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DESCRIPTION
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SEE MORE:
Inspection
INSPECTION PROCEDURE 1. INSPECT BRAKE BOOSTER PUMP ASSEMBLY (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition A51-1 (BM1) - A51-2 (GND1) Always Below 10 Ω A52-2 (BM2) - A52-1 (GND2)
Removal
REMOVAL PROCEDURE 1. REMOVE NO. 2 FORWARD RECOGNITION COVER Click here 2. REMOVE NO. 1 FORWARD RECOGNITION COVER Click here 3. REMOVE PROTECTOR (a) Detach the 2 claws and remove the protector. 4. REMOVE AIR CONDITIONING THERMISTOR ASSEMBLY (HUMIDITY SENSOR) (a) Disconnect the connector. (
