Dtc B1587 Lost Communication For Immobiliser Communication Circuit

Vehicle Interior. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25
Theft Deterrent Keyless Entry. Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CLEAR DTC

CHECK FOR DTC

REREGISTER ECU COMMUNICATION ID

CLEAR DTC

CHECK FOR DTC

CHECK CONNECTION OF CONNECTOR

CHECK HARNESS AND CONNECTOR (TELEPHONE TRANSCEIVER - ECM)

CHECK HARNESS AND CONNECTOR (TELEPHONE TRANSCEIVER - TRANSPONDER KEY ECU)

REPLACE TRANSPONDER KEY ECU ASSEMBLY

REGISTER ECU COMMUNICATION ID

CLEAR DTC

CHECK FOR DTC

REPLACE ECM

REGISTER ECU COMMUNICATION ID

CLEAR DTC

CHECK FOR DTC

DTC B1587 Lost Communication for Immobiliser Communication Circuit


DESCRIPTION

When one of the following occurs: 1) the telephone transceiver assembly detects errors in its own communications with the transponder key ECU assembly; 2) the telephone transceiver assembly detects errors in the communication lines; 3) the ECU communication ID between the transponder key ECU assembly and telephone transceiver assembly is different and an engine start is attempt, the telephone transceiver assembly stores DTC B1587.
HINT:
Before troubleshooting for these DTCs, make sure no engine immobiliser system DTCs are present. If present, troubleshoot the engine immobiliser system DTCs first.

DTC Code
DTC Detection Condition
Trouble Area
B1587
Either condition is met:
  1. Error in communication between telephone transceiver assembly and transponder key ECU assembly
  2. Error in communication lines
  3. Communication ID is different during communication with transponder key ECU assembly
  1. Telephone transceiver assembly
  2. Transponder key ECU assembly
  3. ECM
  4. Harness or connector

WIRING DIAGRAM


Hilux. Tgn26, 36 Kun25, 26, 35, 36 Ggn25.Theft Deterrent Keyless Entry.Engine Immobiliser System. Dtc B1587 Lost Communication For Immobiliser Communication Circuit


INSPECTION PROCEDURE

NOTICE:
  1. When replacing the telephone transceiver assembly, transponder key ECU assembly or ECM, refer to the Service Bulletin.
  2. When the telephone transceiver assembly is replaced, it is necessary to set the contract mode.
  3. Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.CLEAR DTC

  1. Clear the DTCs (HILUX_TGN26 RM0000044SM00EX.html).


NEXT


2.CHECK FOR DTC

  1. Check for DTCs (HILUX_TGN26 RM0000044SM00EX.html).

    OK:
    DTC B1587 is not output.


NG
Go to step 3
OK

USE SIMULATION METHOD TO CHECK (HILUX_TGN26 RM000004QR7005X.html)

3.REREGISTER ECU COMMUNICATION ID

  1. Reregister the ECU - ECM communication ID (Refer to the Service Bulletin).


NEXT


4.CLEAR DTC

  1. Clear the DTCs (HILUX_TGN26 RM0000044SM00EX.html).


NEXT


5.CHECK FOR DTC

  1. Check for DTCs (HILUX_TGN26 RM0000044SM00EX.html).

    OK:
    DTC B1587 is not output.


NG
Go to step 6
OK

END

6.CHECK CONNECTION OF CONNECTOR

  1. Turn the ignition switch is off.

  1. Check that the connectors are properly connected to the telephone transceiver assembly, transponder key ECU assembly and ECM.

    OK:
    Connectors are properly connected.


NG
CONNECT CONNECTOR CORRECTLY
OK


7.CHECK HARNESS AND CONNECTOR (TELEPHONE TRANSCEIVER - ECM)

  1. Disconnect the G144 telephone transceiver assembly connector.

  1. Disconnect the G38*1, G146*2, G148*3 or G156*4 ECM connector.

    1. *1: for 1KD-FTV (except DPF and i-ART), 2KD-FTV (except DPF)
    2. *2: for 2TR-FBE
    3. *3: for 1KD-FTV (for DPF), 2KD-FTV (for DPF)
    4. *4: for 1KD-FTV (for i-ART)

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    for 1KD-FTV (except DPF and i-ART), 2KD-FTV (except DPF):
    Tester Connection
    		Condition
    		Specified Condition
    G144-7 (BLK2) - G38-29 (IMO)
    		Always
    		Below 1 Ω
    G144-8 (BLK3) - G38-30 (IMI)
    		Always
    		Below 1 Ω
    G144-7 (BLK2) or G38-29 (IMO) - Body ground
    		Always
    		10 kΩ or higher
    G144-8 (BLK3) or G38-30 (IMI) - Body ground
    		Always
    		10 kΩ or higher
    for 2TR-FBE:
    Tester Connection
    		Condition
    		Specified Condition
    G144-7 (BLK2) - G146-32 (IMO)
    		Always
    		Below 1 Ω
    G144-8 (BLK3) - G146-31 (IMI)
    		Always
    		Below 1 Ω
    G144-7 (BLK2) or G146-32 (IMO) - Body ground
    		Always
    		10 kΩ or higher
    G144-8 (BLK3) or G146-31 (IMI) - Body ground
    		Always
    		10 kΩ or higher
    for 1KD-FTV (for DPF), 2KD-FTV (for DPF):
    Tester Connection
    		Condition
    		Specified Condition
    G144-7 (BLK2) - G148-29 (IMO)
    		Always
    		Below 1 Ω
    G144-8 (BLK3) - G148-28 (IMI)
    		Always
    		Below 1 Ω
    G144-7 (BLK2) or G148-29 (IMO) - Body ground
    		Always
    		10 kΩ or higher
    G144-8 (BLK3) or G148-28 (IMI) - Body ground
    		Always
    		10 kΩ or higher
    for 1KD-FTV (for i-ART):
    Tester Connection
    		Condition
    		Specified Condition
    G144-7 (BLK2) - G156-29 (IMO)
    		Always
    		Below 1 Ω
    G144-8 (BLK3) - G156-28 (IMI)
    		Always
    		Below 1 Ω
    G144-7 (BLK2) or G156-29 (IMO) - Body ground
    		Always
    		10 kΩ or higher
    G144-8 (BLK3) or G156-28 (IMI) - Body ground
    		Always
    		10 kΩ or higher

  1. Measure the voltage according to the value(s) in the table below.

    Standard Voltage:
    for 1KD-FTV (except DPF and i-ART), 2KD-FTV (except DPF):
    Tester Connection
    		Condition
    		Specified Condition
    G144-7 (BLK2) or G38-29 (IMO) - Body ground
    		Always
    		Below 1 V
    G144-8 (BLK3) or G38-30 (IMI) - Body ground
    		Always
    		Below 1 V
    for 2TR-FBE:
    Tester Connection
    		Condition
    		Specified Condition
    G144-7 (BLK2) or G146-32 (IMO) - Body ground
    		Always
    		Below 1 V
    G144-8 (BLK3) or G146-31 (IMI) - Body ground
    		Always
    		Below 1 V
    for 1KD-FTV (for DPF), 2KD-FTV (for DPF):
    Tester Connection
    		Condition
    		Specified Condition
    G144-7 (BLK2) or G148-29 (IMO) - Body ground
    		Always
    		Below 1 V
    G144-8 (BLK3) or G148-28 (IMI) - Body ground
    		Always
    		Below 1 V
    for 1KD-FTV (for i-ART):
    Tester Connection
    		Condition
    		Specified Condition
    G144-7 (BLK2) or G156-29 (IMO) - Body ground
    		Always
    		Below 1 V
    G144-8 (BLK3) or G156-28 (IMI) - Body ground
    		Always
    		Below 1 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


8.CHECK HARNESS AND CONNECTOR (TELEPHONE TRANSCEIVER - TRANSPONDER KEY ECU)

  1. Disconnect the G144 telephone transceiver assembly connector.

  1. Disconnect the G26 transponder key ECU assembly connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    G144-1 (BLK1) - G26-12 (EFII)
    		Always
    		Below 1 Ω
    G144-1 (BLK1) or G26-12 (EFII) - Body ground
    		Always
    		10 kΩ or higher
    G144-2 (BLK4) - G26-13 (EFIO)
    		Always
    		Below 1 Ω
    G144-2 (BLK4) or G26-13 (EFIO) - Body ground
    		Always
    		10 kΩ or higher

  1. Measure the voltage according to the value(s) in the table below.

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    G144-1 (BLK1) or G26-12 (EFII) - Body ground
    		Always
    		Below 1 V
    G144-2 (BLK4) or G26-13 (EFIO) - Body ground
    		Always
    		Below 1 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


9.REPLACE TRANSPONDER KEY ECU ASSEMBLY

  1. Temporarily replace the transponder key ECU assembly with a new one (Refer to the Service Bulletin).


NEXT


10.REGISTER ECU COMMUNICATION ID

  1. Register the ECU - ECM communication ID (Refer to the Service Bulletin).


NEXT


11.CLEAR DTC

  1. Clear the DTCs (HILUX_TGN26 RM0000044SM00EX.html).


NEXT


12.CHECK FOR DTC

  1. Check for DTCs (HILUX_TGN26 RM0000044SM00EX.html).

    OK:
    DTC B1587 is not output.


NG
Go to step 13
OK

END (TRANSPONDER KEY ECU IS DEFECTIVE)

13.REPLACE ECM

  1. Temporarily replace the ECM with a new one.

    1. for 2TR-FBE: HILUX_TGN26 RM000000VW2024X.html
    2. for 1KD-FTV: HILUX_TGN26 RM0000013Z001IX.html
    3. for 2KD-FTV: HILUX_TGN26 RM0000013Z001HX.html

NEXT


14.REGISTER ECU COMMUNICATION ID

  1. Register the ECU - ECM communication ID (Refer to the Service Bulletin).


NEXT


15.CLEAR DTC

  1. Clear the DTCs (HILUX_TGN26 RM0000044SM00EX.html).


NEXT


16.CHECK FOR DTC

  1. Check for DTCs (HILUX_TGN26 RM0000044SM00EX.html).

    OK:
    DTC B1587 is not output.


NG
REPLACE TELEPHONE TRANSCEIVER ASSEMBLY
OK

END (ECM IS DEFECTIVE)