Lexus NX: Lost Communication with ECM / PCM "A" (U0100-U0142,U0155,U0163,U0293)

Lexus NX Service Manual / Vehicle Interior / Heating / Air Conditioning / Air Conditioning System / Lost Communication with ECM / PCM "A" (U0100-U0142,U0155,U0163,U0293)

DESCRIPTION

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

Note

U0100

Lost Communication with ECM / PCM "A"

No communication with ECM

  • CAN communication system
  • ECM

-

-

U0131

Lost Communication with Power Steering Control Module

No communication with power steering ECU assembly

No communication with ECM

  • CAN communication system
  • Power steering ECU assembly
  • CAN communication system
  • ECM

-

-

U0142

Lost Communication with Body Control Module "B"

No communication with main body ECU

  • CAN communication system
  • Main body ECU (multiplex network body ECU)

-

-

U0155

Lost Communication with Instrument Panel Cluster (IPC) Control Module

No communication with combination meter

  • CAN communication system
  • Combination meter assembly

-

-

U0163

Lost Communication with Navigation Control Module

No communication with radio receiver assembly

  • CAN communication system
  • Radio receiver assembly

-

-

U0293

Lost Communication with HV ECU

No communication with hybrid vehicle control ECU

  • CAN communication system
  • Hybrid vehicle control ECU

-

-

PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTC.

Click here

Body Electrical > Air Conditioner > Clear DTCs

(b) Check for DTC.

Click here

Body Electrical > Air Conditioner > Trouble Codes

Result

Proceed to

DTC U0100, U0131, U0142, U0155, U0163 and U0293 are not output

A

DTC U0100, U0131, U0142, U0155, U0163 and/or U0293 are output

B

A

USE SIMULATION METHOD TO CHECK

B

GO TO CAN COMMUNICATION SYSTEM

READ NEXT:

 Blower Motor Circuit

DESCRIPTION The blower with fan motor sub-assembly is operated by signals from the air conditioning amplifier assembly. Blower motor speed signals are transmitted in accordance with changes in the dut

 Heater Water Pump Circuit

DESCRIPTION The heater accessory assembly sends engine coolant to the heater core assembly while the engine is stopped to prevent heater effectiveness from becoming low. Directed by the air conditioni

 PTC Heater Circuit

DESCRIPTION The air conditioning amplifier assembly sends operation signals to the PTC heater relays when quick heater assembly operation conditions are met. Based on the signals from the air conditio

SEE MORE:

 Removal

REMOVAL CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH and LH sides. The procedure listed below is for the LH side. PROCEDURE 1. PRECAUTION Click here 2. REMOVE FRONT DOOR TRIM COVER LH Click here 3. REMOVE FRONT DOOR INSIDE HANDLE BEZEL PLUG LH Click here 4. REMOVE

 Components

COMPONENTS ILLUSTRATION *1 NO. 1 ENGINE UNDER COVER ASSEMBLY - - ILLUSTRATION *1 INVERTER BRACKET ASSEMBLY *2 INVERTER WATER PUMP WITH MOTOR ASSEMBLY *3 NO. 5 INVERTER COOLING HOSE *4 TRANSMISSION CONTROL CABLE ASSEMBLY *5 TRANSMISSION OIL COOLER ASSEMBLY *6

© 2016-2024 Copyright www.lexunx.com