Last Modified: 6-7-2017 6.8:8.0.40 Doc ID: RM0000018NC000X
Model Year Start: 2006 Model: Land Cruiser Prod Date Range: [05/2005 -           ]
Title: AIR CONDITIONING: AIR CONDITIONING SYSTEM: 42; Air Inlet Damper Control Servo Motor Circuit; 2006 MY Land Cruiser [05/2005 -        ]

DTC

42

Air Inlet Damper Control Servo Motor Circuit

DESCRIPTION

The air inlet damper control servomotor is controlled by the A/C amplifier and moves the air inlet damper to the desired position.

DTC No.

Detection Item

Trouble Area

42

Air inlet damper position sensor value does not change even if A/C amplifier operated air inlet damper control servomotor
  • Air inlet damper control servomotor
  • Harness or connector between air inlet damper control servomotor and A/C amplifier
  • A/C amplifier

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1.

PERFORM ACTUATOR CHECK

(a) Warm up the engine.

(b) Set the actuator check mode 2006 MY Land Cruiser [05/2005 -        ]; AIR CONDITIONING: AIR CONDITIONING SYSTEM: ACTUATOR CHECK .

(c) Press the DEF switch and change it to step operation.

(d) Press the DEF switch and check the operation of the air inlet damper and the condition of the blower.

OK:

Display Code

Air Inlet Damper

0 to 1

FRESH

2

R/F (50%)

3

RECIRC

4 to 7

FRESH
OK

AIR CONDITIONING AMPLIFIER

NG

2.

CHECK AIR INLET DAMPER CONTROL SERVOMOTOR

(a) Remove the air inlet servomotor.

(b) Connect positive (+) lead to terminal MREC (5) and negative (-) lead to terminal MFRS (4) and check the air inlet servomotor.

OK:

The lever moves smoothly to REC position.

(c) Connect positive (+) lead to terminal MFRS (4) and negative (-) lead to terminal MREC (5) and check the air inlet servomotor.

OK:

The lever moves smoothly to FRS position.
NG

REPLACE AIR INLET SERVOMOTOR

OK

3.

CHECK WIRE HARNESS (AIR INLET DAMPER CONTROL SERVOMOTOR - AIR CONDITIONING AMPLIFIER)
NG

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

REPLACE AIR CONDITIONING AMPLIFIER