Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Lost Communication with ECM/PCM "A" Missing Message (U010087,...,U117B87)

Toyota Corolla Cross (2022-2024) Service Manual / Engine & Hybrid System / Hybrid / Battery Control / Hybrid Control System / Lost Communication with ECM/PCM "A" Missing Message (U010087,...,U117B87)

DESCRIPTION

The hybrid vehicle control ECU transmits and receives signals via CAN communication to and from the ECM, shift control ECU, MG ECU, skid control ECU, main body ECU, airbag sensor assembly, steering angle sensor, certification ECU (smart key ECU assembly) and air conditioning amplifier assembly.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

Note

U010087

Lost Communication with ECM/PCM "A" Missing Message

A CAN communication error between the ECM and hybrid vehicle control ECU (CAN communication system malfunction) occurs

(1 trip detection logic)

CAN communication system

Comes on

Master Warning:

Comes on

SAE Code:

U0100

U011087

Lost Communication with Drive Motor Control Module "A" Missing Message

A CAN communication error between the MG ECU and hybrid vehicle control ECU (CAN communication system malfunction) occurs

(1 trip detection logic)

CAN communication system

Comes on

Master Warning:

Comes on

SAE Code:

U0110

U012687

Lost Communication with Steering Angle Sensor Module Missing Message

A CAN communication error between the steering sensor and hybrid vehicle control ECU (CAN communication system malfunction) occurs

(1 trip detection logic)

CAN communication system

Does not come on

Master Warning:

Does not come on

SAE Code:

U0126

U012987

Lost Communication with Brake System Control Module Missing Message

A CAN communication error (V BUS) between the skid control ECU and hybrid vehicle control ECU (CAN communication system malfunction) occurs

(1 trip detection logic)

CAN communication system

Comes on

Master Warning:

Comes on

SAE Code:

U0129

U014087

Lost Communication with Body Control Module Missing Message

A CAN communication error between the main body ECU and hybrid vehicle control ECU (CAN communication system malfunction) occurs

(1 trip detection logic)

CAN communication system

Does not come on

Master Warning:

Comes on

SAE Code:

U0140

U015187

Lost Communication with Restraints Control Module Missing Message

A CAN communication error between the airbag sensor assembly and hybrid vehicle control ECU (CAN communication system malfunction) occurs

(1 trip detection logic)

CAN communication system

Does not come on

Master Warning:

Comes on

SAE Code:

U0151

U015500

Lost Communication with Instrument Panel Cluster (IPC) Control Module

A CAN communication error between the combination meter assembly and hybrid vehicle control ECU (CAN communication system malfunction) occurs

(1 trip detection logic)

CAN communication system

Does not come on

Master Warning:

Does not come on

SAE Code:

U0155

U016487

Lost Communication with HVAC Control Module Missing Message

A CAN communication error between the air conditioning amplifier assembly and hybrid vehicle control ECU (CAN communication system malfunction) occurs

(1 trip detection logic)

CAN communication system

Does not come on

Master Warning:

Does not come on

SAE Code:

U0164

U110787

Lost Communication with Power Management Module Missing Message

A CAN communication error between the certification ECU (smart key ECU assembly) and hybrid vehicle control ECU (CAN communication system malfunction) occurs

(1 trip detection logic)

CAN communication system

Does not come on

Master Warning:

Comes on

SAE Code:

U1107

U111A87

Lost Communication with ECM/PCM "A" (ch2) Missing Message

A CAN communication error between the ECM and hybrid vehicle control ECU (CAN communication system malfunction) occurs

(1 trip detection logic)

CAN communication system

Comes on

Master Warning:

Comes on

SAE Code:

U111A

U115487

Lost Communication with Drive Motor Control Module "A" (ch2) Missing Message

A CAN communication error between the MG ECU and hybrid vehicle control ECU (CAN communication system malfunction) occurs

(1 trip detection logic)

CAN communication system

Comes on

Master Warning:

Comes on

SAE Code:

U1154

U117087

Lost Communication with Brake System Control Module (Secondary CAN Line) Missing Message

A CAN communication error between the skid control ECU and hybrid vehicle control ECU (CAN communication system malfunction) occurs

(1 trip detection logic)

CAN communication system

Comes on

Master Warning:

Comes on

SAE Code:

U1170

U117B87

Lost Communication with Hybrid/EV Battery Energy Control Module "A" (ch2) Missing Message

A CAN communication error between the battery ECU assembly and hybrid vehicle control ECU (CAN communication system malfunction) occurs

(1 trip detection logic)

CAN communication system

Comes on

Master Warning:

Comes on

SAE Code:

U117B

MONITOR DESCRIPTION

If the hybrid vehicle control ECU detects a problem with CAN communication with the ECU, it will illuminate the MIL and store a DTC.

MONITOR STRATEGY

Related DTCs

U0100 (INF U010087): Lost communication with ECM/PCM verify communication

U0110 (INF U011087): Lost communication with drive motor "A" control module verify communication

U0129 (INF U012987): Lost communication with brake system control module verify communication

U111A (INF U111A87): Lost communication with ECM/PCM verify communication

U1154 (INF U115487): Lost communication with MG ECU verify communication

U1170 (INF U117087): Lost communication with skid control ECU verify communication

U117B (INF U117B87): Lost communication with brake system control module verify communication

Required sensors/components

Main: Hybrid vehicle control ECU

Sub: CAN bus line

Frequency of operation

Continuous

Duration

TMC's intellectual property

MIL operation

Immediately

Sequence of operation

None

TYPICAL ENABLING CONDITIONS

The monitor will run whenever the following DTCs are not stored

TMC's intellectual property

Other conditions belong to TMC's intellectual property

-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

-

COMPONENT OPERATING RANGE

Hybrid vehicle control ECU

DTC U0100 (INF U010087) is not detected

DTC U0110 (INF U011087) is not detected

DTC U0129 (INF U012987) is not detected

DTC U111A (INF U111A87) is not detected

DTC U1154 (INF U115487) is not detected

DTC U1170 (INF U117087) is not detected

DTC U117B (INF U117B87) is not detected

CONFIRMATION DRIVING PATTERN

HINT:

  • After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

    Click here

  • When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

    Click here

  1. Connect the GTS to the DLC3.
  2. Turn the ignition switch to ON and turn the GTS on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the ignition switch off and wait for 2 minutes or more.
  5. Turn the ignition switch to ON and turn the GTS on.
  6. Turn the ignition switch to ON (READY) and wait for 2 minutes or more. [*1]

    HINT:

    [*1]: Normal judgment procedure.

    The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

  7. Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.
  8. Check the DTC judgment result.

    HINT:

    • If the judgment result shows NORMAL, the system is normal.
    • If the judgment result shows ABNORMAL, the system has a malfunction.
    • If the judgment result shows INCOMPLETE, perform the normal judgment procedure again.

PROCEDURE

1.

CHECK DTC OUTPUT (HEALTH CHECK)

(a) According to the display on the GTS, select "Health Check".

(b) Check for DTCs.

Result

Proceed to

Hybrid vehicle control ECU outputs P253012.

A

Hybrid vehicle control ECU does not output P253012.

B

(c) Turn the ignition switch off.

A

GO TO DTC CHART (P253012)

B

GO TO CAN COMMUNICATION SYSTEM

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