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Last Modified: 11-27-2007 1.6 J
Service Category: Power Source/Network Section: Networking
Model Year: 2008 Model: LX570 Doc ID: RM000001TNA00JX
Title: NETWORKING: CAN COMMUNICATION SYSTEM: DESCRIPTION (2008 LX570)

Combination Meter ECU Communication Stop Mode

DESCRIPTION

Detection Item

Symptom

Trouble Area

Combination Meter ECU Communication Stop Mode

When either condition below is met:

  • "Combination Meter" is not displayed on "CAN Bus Check".
  • Applies to "Combination Meter ECU Communication Stop Mode" in "DTC Combination Table".
  • Power source or inside combination meter assembly
  • Combination meter assembly

WIRING DIAGRAM

INSPECTION PROCEDURE

HINT:

Operating the engine switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.

PROCEDURE

1.

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

(a) Disconnect the E77 combination meter connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

E77-26 (ET) - 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

E77-21 (B) - Body ground

Always

11 to 14 V

E77-30 (IG+) - Body ground

Engine switch on (IG)

11 to 14 V
OK