Lexus NX: Dtc Check / Clear
DTC CHECK / CLEAR
NOTICE:
- The steering lock ECU (steering lock actuator assembly) does not store history DTCs. If any DTCs are output, confirm and record them as soon as possible. Do not turn the power switch off or clear the DTCs until the DTCs are confirmed and recorded.
- DTCs may have been stored due to problems unrelated to the steering lock system. Be sure to confirm and record any DTCs output for other systems.
- When using the Techstream with the power switch off, connect the Techstream to the vehicle 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.
CHECK FOR DTC (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))
(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 Electrical / Main Body / Trouble Codes.
Body Electrical > Main Body > Trouble Codes(f) Check for DTCs.
CHECK FOR DTC (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))
HINT:
The steering lock system DTCs are output from the steering lock ECU (steering lock actuator assembly) via the certification ECU (smart key ECU assembly).
(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 Electrical / (desired system) / Data List.
Body Electrical > Smart Access > Trouble Codes Body Electrical > Power Source Control > Trouble Codes(f) Check for DTCs.
CLEAR DTC (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))
(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 Electrical / Main Body / Trouble Codes.
Body Electrical > Main Body > Clear DTCs(f) Clear the DTCs.
CLEAR DTC (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))
(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 Electrical / (desired system) / Data List.
Body Electrical > Smart Access > Clear DTCs Body Electrical > Power Source Control > Clear DTCs(f) Clear the DTCs.
READ NEXT:
Data List / Active Test
DATA LIST / ACTIVE TEST READ DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any part
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Steering Lock System DTC No. Detection Item Link B2781 Open / Short in Steering Lock ECU B2782 Power Source Control ECU Malfunction B2788
Open / Short in Steering Lock ECU (B2781)
DESCRIPTION The steering lock ECU and steering lock motor are built into the steering lock actuator assembly. The steering lock ECU (steering lock actuator assembly) detects whether the steering lock
SEE MORE:
Open in Bus 3 Main Bus Line
DESCRIPTION There may be an open circuit in one of the CAN main bus lines when the resistance between terminals 6 (CA3H) and 21 (CA3L) of the central gateway ECU (network gateway ECU) is 70 Ω or higher. Symptom Trouble Area
Resistance between terminals 6 (CA3H) and 21 (CA3L) of the cent
Operation Check
OPERATION CHECK AUTOMATIC LIGHT CONTROL SYSTEM OPERATION CHECK (a) Turn the power switch on (IG). (b) Turn the headlight dimmer switch to the AUTO position. (c) Cover the automatic light control sensor. (d) Check that the taillights and low beam headlights come on. (e) Uncover the automatic light co
