Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Lost Communication with ECM/PCM "A" Missing Message (U010087,...,U016387)

Toyota Corolla Cross (2022-2024) Service Manual / Vehicle Interior / Heating / Air Conditioning / Air Conditioning System (for Gasoline Model With Automatic Air Conditioning System) / Lost Communication with ECM/PCM "A" Missing Message (U010087,...,U016387)

DESCRIPTION

These DTCs are stored when the CAN communication system is malfunctioning.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

U010087

Lost Communication with ECM/PCM "A" Missing Message

Diagnosis Condition:

  • IG voltage 8.5 V or higher

Malfunction Status:

  • No communication with ECM

Detection Time:

  • Continuously for 10 seconds or more
  • CAN communication system
  • ECM
  • Air conditioning amplifier assembly

Memorized

U013187

Lost Communication with Power Steering Control Module Missing Message

Diagnosis Condition:

  • IG voltage 8.5 V or higher

Malfunction Status:

  • No communication with power steering ECU assembly

Detection Time:

  • Continuously for 10 seconds or more
  • CAN communication system
  • Power steering ECU assembly
  • Air conditioning amplifier assembly

Memorized

U014087

Lost Communication with Body Control Module Missing Message

Diagnosis Condition:

  • IG voltage 8.5 V or higher

Malfunction Status:

  • No communication with main body ECU (multiplex network body ECU)

Detection Time:

  • Continuously for 10 seconds or more
  • CAN communication system
  • Main body ECU (multiplex network body ECU)
  • Air conditioning amplifier assembly

Memorized

U015587

Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message

Diagnosis Condition:

  • IG voltage 8.5 V or higher

Malfunction Status:

  • No communication with combination meter assembly

Detection Time:

  • Continuously for 10 seconds or more
  • CAN communication system
  • Combination meter assembly
  • Air conditioning amplifier assembly

Memorized

U016387

Lost Communication with Navigation Control Module Missing Message

Diagnosis Condition:

  • IG voltage 8.5 V or higher

Malfunction Status:

  • No communication with radio and display receiver assembly

Detection Time:

  • Continuously for 10 seconds or more
  • CAN communication system
  • Radio and display receiver assembly
  • Air conditioning amplifier assembly

Memorized

PROCEDURE

1.

CHECK DTC OUTPUT

(a) Check for DTCs.

Body Electrical > Air Conditioner > Trouble Codes

Result

Proceed to

DTC U010087, U013187, U014087, U015587 or U016387 is output

A

DTCs are not output

B

None of the above conditions are met

C
A

GO TO CAN COMMUNICATION SYSTEM

B

USE SIMULATION METHOD TO CHECK

C

GO TO DTC CHART

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