Toyota 4Runner manuals

Toyota 4Runner: Lost Communication with Combination Meter (B2661,B2662)

Toyota 4Runner Service Manual / Power Source / Network / Networking / Lin Communication System / Lost Communication with Combination Meter (B2661,B2662)

DESCRIPTION

This DTC is stored when LIN communication between the drive monitor switch and combination meter assembly stops 10 seconds or more.

DTC Code

DTC Detection Condition

Trouble Area

B2661

No communication between the drive monitor switch and combination meter assembly for 10 seconds or more.

  • Drive monitor switch
  • Combination meter assembly
  • Harness or connector

B2662

WIRING DIAGRAM


CAUTION / NOTICE / HINT

NOTICE:

  • When using the Techstream with the ignition switch off to troubleshoot:

    Connect the Techstream to the vehicle and turn a courtesy light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins.

  • Inspect the fuses and bulbs for circuits related to this system before performing the following inspection procedure.

HINT:

As the combination meter assembly incorporates the accessory meter function, DTC B2662 is stored at the same time as B2661. The accessory meter assembly does not support LIN communication. Therefore, if DTCs B2661 and B2662 are stored, check for communication disruptions between the drive monitor switch and the combination meter assembly.

PROCEDURE

1.

CLEAR DTC

(a) Clear the DTCs (See page ).



NEXT

2.

CHECK FOR DTC

(a) Check for DTCs (See page ).


OK:

DTC B2661 and B2662 are not output.


OK

USE SIMULATION METHOD TO CHECK


NG

3.

CHECK HARNESS AND CONNECTOR (DRIVE MONITOR SWITCH - COMBINATION METER ASSEMBLY)

(a) Disconnect the U1 drive monitor switch connector.

(b) Disconnect the F14 combination meter assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

U1-4 (LIN) - F14-6 (LINT)

Always

Below 1 Ω

U1-4 (LIN) or F14-6 (LINT) - Body ground

Always

10 kΩ or higher


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

4.

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

(a) Disconnect the F14 combination meter assembly connector.


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F14-20 (E1) - Body ground

Always

Below 1 Ω

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

F14-15 (B) - Body ground

Always

11 to 14 V

F14-17 (IG+) - Body ground

Ignition switch ON

11 to 14 V

Text in Illustration

*a

Front view of wire harness connector

(to Combination Meter Assembly)


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

5.

REPLACE COMBINATION METER ASSEMBLY

(a) Temporarily replace the combination meter assembly with a new one (See page ).



NEXT

6.

CLEAR DTC

(a) Clear the DTCs (See page ).



NEXT

7.

CHECK FOR DTC

(a) Check for DTCs (See page ).



OK

END (COMBINATION METER ASSEMBLY IS DEFECTIVE)


NG

REPLACE DRIVE MONITOR SWITCH

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