STOP AND START SYSTEM(for 8GR-FKS), Diagnostic DTC:U010087, U010387, U012587, U012687, U012987, U013187, U014087, U015187, U016487, U110687, U114A87, U114C87

DTC Code DTC Name
U010087 Lost Communication with ECM/PCM "A" Missing Message
U010387 Lost Communication with Gear Shift Control Module "A" Missing Message
U012587 Lost Communication with Multi-axis Acceleration Sensor Module Missing Message
U012687 Lost Communication with Steering Angle Sensor Module Missing Message
U012987 Lost Communication with Brake System Control Module Missing Message
U013187 Lost Communication with Power Steering Control Module Missing Message
U014087 Lost Communication with Body Control Module Missing Message
U015187 Lost Communication with Restraints Control Module Missing Message
U016487 Lost Communication with HVAC Control Module Missing Message
U110687 Lost Communication with Electric Parking Brake Module Missing Message
U114A87 Lost Communication with Sub Battery Module Missing Message
U114C87 Lost Communication with Air Suspension Control Module "A" Missing Message

DESCRIPTION

The engine stop and start ECU communicates with the SFI system, electronically controlled brake system, power steering system, air conditioning system, airbag system and main body ECU (multiplex network body ECU) via CAN communication.

If there is a communication error between the engine stop and start ECU and any of the systems, the engine stop and start ECU stores DTCs and illuminates the stop and start cancel indicator except when there is a communication error with the meter / gauge system.

Tech Tips


  • When there is an open in the output side of the backup boost converter (built into the engine stop and start ECU), power to the system with the open is cut off. The engine stop and start ECU stores CAN communication DTCs for the system with the open and stop and start system DTC P323A16.

  • When the backup boost converter (built into the engine stop and start ECU) detects overcurrent in any of the circuits it supplies power to, it shuts off the circuit. The engine stop and start ECU stores CAN communication DTCs for the system which circuit was shut off and stores stop and start system DTC P323A19.

    e.g.: When the backup boost converter (built into the engine stop and start ECU) detects overcurrent in the power source circuit of the power steering system and cuts off power supply, the engine stop and start ECU stores DTCs U013187 and P323A19.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory Note
U010087 Lost Communication with ECM/PCM "A" Missing Message No communication between the engine stop and start ECU and ECM for 1 second.

  • Wire harness or connector

  • Engine stop and start ECU

  • ECM

 Blinks DTC stored SAE Code: U0100
U010387 Lost Communication with Gear Shift Control Module "A" Missing Message No communication between the engine stop and start ECU and Shift control ECU for 1.6 second.

  • Wire harness or connector

  • Engine stop and start ECU

  • Shift control ECU

 Blinks DTC stored SAE Code: U0103
U012587 Lost Communication with Multi-axis Acceleration Sensor Module Missing Message No communication between the engine stop and start ECU and yaw rate sensor for 1 second.

  • Wire harness or connector

  • Engine stop and start ECU

  • Yaw rate sensor

 Blinks DTC stored SAE Code: U0125
U012687 Lost Communication with Steering Angle Sensor Module Missing Message No communication between the engine stop and start ECU and steering sensor for 1 second.

  • Wire harness or connector

  • Engine stop and start ECU

  • Steering sensor

 Blinks DTC stored SAE Code: U0126
U012987 Lost Communication with Brake System Control Module Missing Message No communication between the engine stop and start ECU and skid control ECU (brake actuator assembly) for 2.22 seconds.

  • Wire harness or connector

  • Engine stop and start ECU

  • Skid control ECU (Brake actuator assembly)

 Blinks DTC stored SAE Code: U0129
U013187 Lost Communication with Power Steering Control Module Missing Message No communication between the engine stop and start ECU and the power steering ECU assembly for 1 second.

  • Wire harness or connector

  • Engine stop and start ECU

  • Power steering ECU assembly

 Blinks DTC stored SAE Code: U0131
U014087 Lost Communication with Body Control Module Missing Message No communication between the engine stop and start ECU and the main body ECU (multiplex network body ECU) for 3.6 seconds.

  • Wire harness or connector

  • Engine stop and start ECU

  • Main body ECU (multiplex network body ECU)

 Blinks DTC stored SAE Code: U0140
U015187 Lost Communication with Restraints Control Module Missing Message No communication between the engine stop and start ECU and airbag sensor assembly for 10.6 seconds.

  • Wire harness or connector

  • Engine stop and start ECU

  • Airbag sensor assembly

 Blinks DTC stored SAE Code: U0151
U016487 Lost Communication with HVAC Control Module Missing Message No communication between the engine stop and start ECU and air conditioning amplifier assembly for 10.6 seconds.

  • Wire harness or connector

  • Engine stop and start ECU

  • Air conditioning amplifier assembly

 Blinks DTC stored SAE Code: U0164
U110687 Lost Communication with Electric Parking Brake Module Missing Message No communication between the engine stop and start ECU and electric parking brake ECU for 1.08 seconds.

  • Wire harness or connector

  • Engine stop and start ECU

  • Electric parking brake ECU

 Blinks DTC stored SAE Code: U1106
U114A87 Lost Communication with Sub Battery Module Missing Message No communication between the engine stop and start ECU and sub-battery module assembly for 1.25 seconds.

  • Wire harness or connector

  • Engine stop and start ECU

  • Sub-battery module assembly

 Blinks DTC stored SAE Code: U114A
U114C87 Lost Communication with Air Suspension Control Module "A" Missing Message No communication between the engine stop and start ECU and suspension control ECU for 1.1 seconds.

  • Wire harness or connector

  • Engine stop and start ECU

  • Suspension control ECU

 Blinks DTC stored SAE Code: U114C

CAUTION / NOTICE / HINT

Tech Tips

If any of CAN communication system DTCs and sensor malfunction DTCs related to the CAN communication system are output simultaneously, perform troubleshooting for the CAN communication system DTCs first, then for the sensor malfunction DTCs.

PROCEDURE


  1. CLEAR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Stop and Start / Trouble Codes.

    5. Clear the DTCs.


      Powertrain > Stop and Start > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK DTC OUTPUT


    1. Turn the engine switch off and wait for 30 seconds or more.

    2. Start the engine.

    3. Perform a road test.

    4. Enter the following menus: Powertrain / Stop and Start / Trouble Codes.

    5. Read the DTCs.


      Powertrain > Stop and Start > Trouble Codes
      Result
      Result Proceed to
      DTC U010087, U010387, U012587, U012687, U012987, U013187, U014087, U015187, U016487, U110687, U114A87 or U114C87 is output A
      DTC U010087, U010387, U012587, U012687, U012987, U013187, U014087, U015187, U016487, U110687, U114A87 or U114C87 is not output B

    A

    GO TO CAN COMMUNICATION SYSTEM Click here

    B

    USE SIMULATION METHOD TO CHECK Click here