Lexus NX: Lost Communication with ECM / PCM "A" (U0100,U0142,U023A)
DESCRIPTION
-
U0100: The meter mirror sub-assembly receives signals from the ECM via CAN communication.
-
U0142: The meter mirror sub-assembly receives signals from the main body ECU (multiplex network body ECU) via CAN communication.
-
U023A: The meter mirror sub-assembly receives signals from the forward recognition camera via CAN communication.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Memory |
| U0100 | Lost Communication with ECM / PCM "A" | -
DTC Detection Condition: IG+ voltage 9.5 to 11.5 V or higher
-
Malfunction Status: Lost communication with ECM
-
Malfunction Duration: 3.6 seconds or more
| -
ECM
-
CAN communication system
-
Meter mirror sub-assembly
| DTC stored |
| U0142 | Lost Communication With Body Control Module "B" | -
DTC Detection Condition: IG+ voltage 9.5 to 11.5 V or higher
-
Malfunction Status: Lost communication with main body ECU (multiplex network body ECU)
-
Malfunction Duration: 5 seconds or more
| -
Main body ECU (multiplex network body ECU)
-
CAN communication system
-
Meter mirror sub-assembly
| DTC stored |
| U023A | Lost Communication With Image Processing Module "A" | -
DTC Detection Condition: IG+ voltage 9.5 to 11.5 V or higher
-
Malfunction Status: Lost communication with forward recognition camera
-
Malfunction Duration: 5 seconds or more
| -
Forward recognition camera
-
CAN communication system
-
Meter mirror sub-assembly
| DTC stored |
PROCEDURE
(a) Clear the DTCs.
Click here
Body Electrical > Head Up Display > Clear DTCs
|
NEXT | | |
(a) Check if CAN communication DTCs are output.
Click here
Body Electrical > Head Up Display > Trouble Codes
OK:
DTC U0100, U0142 and U023A are not output
| NG | | GO TO CAN COMMUNICATION SYSTEM |
READ NEXT:
DESCRIPTION The headup display switch assembly and meter mirror sub-assembly are connected via direct line. The meter mirror sub-assembly can be turned off and on by operating the headup display switc
COMPONENTS ILLUSTRATION *1 INSTRUMENT SIDE PANEL LH *2 NO. 1 INSTRUMENT PANEL SAFETY PAD SUB-ASSEMBLY *3 TRIP SWITCH (LIGHT CONTROL RHEOSTAT) - -
SEE MORE:
DESCRIPTION The crankshaft position sensor system consists of a crank angle sensor plate (crankshaft) and a pickup coil. The crank angle sensor plate has 34 teeth at 10° intervals (2 teeth are missing for detecting top dead center), and is installed on the crankshaft. The crankshaft position sensor
REMOVAL PROCEDURE 1. REMOVE NO. 1 ENGINE COVER SUB-ASSEMBLY Click here 2. REMOVE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (a) Disconnect the camshaft timing oil control valve assembly connector. (b) Remove the bolt and camshaft timing oil control valve assembly from the cylinder
© 2016-2026 Copyright www.lexunx.com
