Last Modified: 6-7-2017 6.8:8.0.40 Doc ID: RM0000018NF003X
Model Year Start: 2007 Model: Land Cruiser Prod Date Range: [08/2006 -           ]
Title: AIR CONDITIONING: AIR CONDITIONING SYSTEM: 47; Rear Air Mix Damper Control Servo Motor Circuit; 2007 MY Land Cruiser [08/2006 -        ]

DTC

47

Rear Air Mix Damper Control Servo Motor Circuit

DESCRIPTION

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

DTC No.

Detection Item

Trouble Area

47

Air mix damper position sensor value does not change even if A/C control assembly operates air mix damper control servomotor
  • Rear air mix damper control servomotor
  • Harness or connector between rear air mix damper control servomotor and rear A/C amplifier
  • Rear A/C amplifier

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1.

PERFORM ACTUATOR CHECK

(a) Warm up the engine.

(b) Set the actuator check mode 2007 MY Land Cruiser [08/2006 -        ]; 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 mix damper and the condition of the blower.

Display Code

Air Mix Damper

Condition

0 to 2

0% (Fully closed)

Cool air comes out

3 to 4

50%

Cool / Warm

5 to 7

100% (Full opened)

Warm air comes out
OK

REPLACE REAR AIR CONDITIONING AMPLIFIER

NG

2.

CHECK REAR AIR MIX DAMPER CONTROL SERVOMOTOR

(a) Remove the rear air mix servomotor.

(b) Connect the positive (+) lead terminal MHOT (1) and negative (-) lead to terminal MCOOL (2) and check the rear air mix servomotor.

OK:

The lever turns smoothly to warm side.

(c) Connect the positive (+) lead to terminal MCOOL (2) and negative (-) lead to terminal MHOT (1) and check the rear air mix servomotor.

OK:

The lever turns smoothly to cool side.
NG

REPLACE REAR AIR MIX SERVOMOTOR

OK

3.

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

REPAIR OR REPLACE HARNESS AND CONNECTOR

OK

REPLACE REAR AIR CONDITIONING AMPLIFIER