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Last Modified: 11-27-2007 1.6 C
Service Category: Vehicle Interior Section: Heating/Air Conditioning
Model Year: 2008 Model: LX570 Doc ID: RM000002LLO009X
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: DESCRIPTION (2008 LX570)

DTC

B1499/99

Multiplex Communication Circuit

DESCRIPTION

The air conditioning amplifier assembly communicates with the ECM and meter ECU through the CAN communication system.

DTC Code

DTC Detection Condition

Trouble Area

B1499/99

An open in the CAN communication line.
  • Air conditioning amplifier assembly
  • CAN communication line

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1.

CHECK FOR DTC

(a) Clear the DTCs HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

(b) Check for DTCs HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM: DTC CHECK / CLEAR (2008 LX570) .

Result

Result

Proceed to

DTC B1499 is not output

A

DTC B1499 is output

B
A