Networking. Dtc B2661 Lost Communication With Combination Meter

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CLEAR DTC

CHECK FOR DTC

CHECK HARNESS AND CONNECTOR (DRIVING SUPPORT SWITCH CONTROL ECU - COMBINATION METER)

CHECK HARNESS AND CONNECTOR (COMBINATION METER - BATTERY AND BODY GROUND)

REPLACE COMBINATION METER ASSEMBLY

CLEAR DTC

CHECK FOR DTC

DTC B2661 Lost Communication with Combination Meter

DESCRIPTION

This DTC is stored when LIN communication between the driving support switch control ECU and combination meter assembly stops 10 seconds or more.

DTC Code	DTC Detection Condition	Trouble Area
B2661	No communication between the driving support switch control ECU and combination meter assembly for 10 seconds or more.	Driving support switch control ECU Combination meter assembly Harness or connector

WIRING DIAGRAM

Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Networking.Lin Communication System.
Dtc
B2661 Lost Communication With Combination Meter

INSPECTION PROCEDURE

NOTICE:

When using the intelligent tester with the ignition switch off to troubleshoot:
Connect the intelligent tester to the vehicle and turn a courtesy light switch on and off at 1.5 second intervals until communication between the intelligent tester and vehicle begins.
Inspect the fuses and bulbs for circuits related to this system before performing the following inspection procedure.

1.CLEAR DTC

Clear the DTCs (LandCruiser RM000002S8D045X.html).

NEXT

2.CHECK FOR DTC

Check for DTCs (LandCruiser RM000002S8D045X.html).
OK:
DTC B2661 is not output.

Go to step 3

USE SIMULATION METHOD TO CHECK

3.CHECK HARNESS AND CONNECTOR (DRIVING SUPPORT SWITCH CONTROL ECU - COMBINATION METER)

for Manual Transmission
1. Disconnect the G76 driving support switch control ECU connector.
2. Disconnect the G6 combination meter assembly connector.
3. Measure the resistance according to the value(s) in the table below.
  Standard Resistance:
  Tester Connection
  Condition
  Specified Condition
  G76-5 (LIN) - G6-37 (LIN)
  Always
  Below 1 Ω
  G76-5 (LIN) or G6-37 (LIN) - Body ground
  Always
  10 kΩ or higher

for Automatic Transmission
1. Disconnect the G162 driving support switch control ECU connector.
2. Disconnect the G6 combination meter assembly connector.
3. Measure the resistance according to the value(s) in the table below.
  Standard Resistance:
  Tester Connection
  Condition
  Specified Condition
  G162-16 (LIN) - G6-37 (LIN)
  Always
  Below 1 Ω
  G162-16 (LIN) or G6-37 (LIN) - Body ground
  Always
  10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.CHECK HARNESS AND CONNECTOR (COMBINATION METER - BATTERY AND BODY GROUND)

Disconnect the G6 combination meter assembly connector.

Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Condition
Specified Condition
G6-21 (E2) - Body ground
Always
Below 1 Ω

Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
Switch Condition
Specified Condition
G6-26 (B) - Body ground
Always
11 to 14 V
G6-28 (IG+) - Body ground
Ignition switch ON
11 to 14 V

Text in Illustration
*a	Front view of wire harness connector (to Combination Meter Assembly)

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

5.REPLACE COMBINATION METER ASSEMBLY

Temporarily replace the combination meter assembly with a new or normally functioning one (LandCruiser RM000003QKY01CX.html).

NEXT

6.CLEAR DTC

Clear the DTCs (LandCruiser RM000002S8D045X.html).

NEXT

7.CHECK FOR DTC

Check for DTCs (LandCruiser RM000002S8D045X.html).

REPLACE DRIVING SUPPORT SWITCH CONTROL ECU (LandCruiser RM00000466X024X.html)

END (COMBINATION METER IS DEFECTIVE)

Tester Connection	Condition	Specified Condition
G76-5 (LIN) - G6-37 (LIN)	Always	Below 1 Ω
G76-5 (LIN) or G6-37 (LIN) - Body ground	Always	10 kΩ or higher

Tester Connection	Switch Condition	Specified Condition
G6-26 (B) - Body ground	Always	11 to 14 V
G6-28 (IG+) - Body ground	Ignition switch ON	11 to 14 V