Lexus NX manuals

Lexus NX: Lost Communication with EV ECU (U0100,U0129,U0131,U0142,U0151,U0163,U0182,U023A)

Lexus NX Service Manual / Vehicle Interior / Meter / Gauge / Display / Meter / Gauge System / Lost Communication with EV ECU (U0100,U0129,U0131,U0142,U0151,U0163,U0182,U023A)

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

U0100

Lost Communication with EV ECU

Both conditions are met:

  • IG voltage is 10.5 V or higher.
  • No communication with the ECM or hybrid vehicle control ECU continues for 2 seconds or more.
  • ECM
  • Hybrid vehicle control ECU
  • CAN communication system
  • Combination meter assembly

U0129

Lost Communication with Brake System Control Module

Both conditions are met:

  • IG voltage is 10.5 V or higher.
  • No communication with the brake booster with master cylinder assembly (skid control ECU) continues for 3 seconds or more.
  • Brake booster with master cylinder assembly (skid control ECU)
  • CAN communication system
  • Combination meter assembly

U0131

Lost Communication with Power Steering Control Module

Both conditions are met:

  • IG voltage is 10.5 V or higher.
  • No communication with the power steering ECU assembly continues for 3 seconds or more.
  • Power steering ECU assembly
  • CAN communication system
  • Combination meter assembly

U0142

Lost Communication with Body Control Module "B"

Both conditions are met:

  • IG voltage is 10.5 V or higher.
  • No communication with the main body ECU (multiplex network body ECU) continues for 3 seconds or more.
  • Main body ECU (multiplex network body ECU)
  • CAN communication system
  • Combination meter assembly

U0151

Lost Communication with Restraints Control Module

Both conditions are met:

  • IG voltage is 10.5 V or higher.
  • No communication with the Airbag ECU assembly continues for 10 seconds or more.
  • Airbag ECU assembly
  • CAN communication system
  • Combination meter assembly

U0163

Lost Communication with Navigation Control Module

Both conditions are met:

  • IG voltage is 10.5 V or higher.
  • No communication with the radio receiver assembly continues for 10 seconds or more.
  • Radio receiver assembly
  • CAN communication system
  • Combination meter assembly

U0182

Lost Communication with Lighting Control Module Front

Both conditions are met:

  • IG voltage is 10.5 V or higher.
  • No communication with the headlight ECU sub-assembly LH continues for 10 seconds or more.
  • Headlight ECU sub-assembly
  • CAN communication system
  • Combination meter assembly

U023A

Lost Communication with Front Camera Module

Both conditions are met:

  • IG voltage is 10.5 V or higher.
  • No communication with the forward recognition camera continues for 10 seconds or more.
  • Forward recognition camera
  • CAN communication system
  • Combination meter assembly

PROCEDURE

1.

CHECK FOR DTC

(a) Check for DTCs.

Click here

Body Electrical > Combination Meter > Trouble Codes

OK:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK

NG

GO TO CAN COMMUNICATION SYSTEM

READ NEXT:

 Speedometer Malfunction

DESCRIPTION The combination meter assembly receives vehicle speed signals from the brake booster with master cylinder assembly (skid control ECU) via the CAN communication line. The wheel speed sensor

 Tachometer Malfunction

DESCRIPTION In this circuit, the combination meter assembly receives engine speed signals from the hybrid vehicle control ECU via the CAN communication system. The combination meter assembly displays

 Fuel Receiver Gauge Display Malfunction

DESCRIPTION OPERATION The combination meter assembly uses the fuel injection volume signal from the ECM, fuel sender gauge assembly to detect the amount of fuel remaining in the fuel tank assembly. Ea

SEE MORE:

 Disassembly

DISASSEMBLY CAUTION / NOTICE / HINT NOTICE: When using a vise, place aluminum plates between the part and vise. When using a vise, do not overtighten it. HINT: Use the same procedure for the RH and LH sides. The procedure listed below is for the LH side. PROCEDURE 1. DISCONNECT REAR

 Short in D Squib Circuit (B1800-B1803)

DESCRIPTION The driver side squib circuit consists of the airbag ECU assembly, spiral cable sub-assembly and horn button assembly. The circuit instructs the SRS to deploy when deployment conditions are met. These DTCs are stored when a malfunction is detected in the driver side squib circuit. DTC

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