DESCRIPTION
This No. 1 air conditioning servo assembly (fresh/recirculation damper) is controlled by the air conditioning amplifier assembly and moves the air inlet damper to the desired position.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
B1442/42 |
Air inlet damper position sensor value does not change even if air conditioning amplifier assembly operates air inlet damper servo motor. |
|
WIRING DIAGRAM
PROCEDURE
1. |
READ VALUE USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Operate the recirculation/fresh switch.
(e) Enter the following menus: Body Electrical / Air Conditioner / Data List.
(f) Check the value(s) by referring to the table below.
Air Conditioner
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Air Inlet Damper Position |
Air inlet damper servo motor actual position / Air inlet damper servo motor actual position / Min.: -14.0% Max.: 113.5% |
FRESH: 0.0% RECIRCULATION: 100.0% |
- |
Air Inlet Damper Target |
Air inlet damper servo motor target position / Min.: -14.0% Max.: 113.5% |
FRESH: 0.0% RECIRCULATION: 100.0% |
- |
OK:
The display is as specified in the Normal Condition column.
Result |
Proceed to |
---|---|
NG |
A |
OK (When troubleshooting according to Problem Symptoms Table) |
B |
OK (When troubleshooting according to the DTC) |
C |
B |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
C |
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
|
2. |
INSPECT NO. 1 AIR CONDITIONING SERVO ASSEMBLY (FRESH/RECIRCULATION DAMPER) |
(a) Remove the No. 1 air conditioning servo assembly (fresh/recirculation damper) (See page ).
(b) Inspect the No. 1 air conditioning servo assembly (fresh/recirculation damper) (See page ).
NG |
REPLACE NO. 1 AIR CONDITIONING SERVO ASSEMBLY (FRESH/RECIRCULATION DAMPER) |
|
3. |
CHECK HARNESS AND CONNECTOR (NO. 1 AIR CONDITIONING SERVO ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY) |
(a) Disconnect the D29 No. 1 air conditioning servo assembly (fresh/recirculation damper).
(b) Disconnect the A35 air conditioning amplifier assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D29-6 (MREC) - A35-26 (AIR) |
Always |
Below 1 Ω |
D29-7 (MFRS) - A35-25 (AIF) |
Always |
Below 1 Ω |
D29-6 (MREC) or A35-26 (AIR) - Body ground |
Always |
10 kΩ or higher |
D29-7 (MFRS) or A35-25 (AIF) - Body ground |
Always |
10 kΩ or higher |
OK |
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Precaution
PRECAUTION
1. IGNITION SWITCH EXPRESSIONS
(a) The type of ignition switch used on this model differs according to the specifications
of the vehicle. The expressions listed in the table below are used in this section.
Expression
Ignition Switch (Position)
Engine ...
Rear Differential Lock Control SW Stuck ON (P17CC)
DESCRIPTION
This DTC is output when a malfunction of the differential lock switch is detected.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
P17CC
Rear Differential Lock Control SW Stuck ON
...
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT INDICATOR LIGHT
(a) Inspect the 4HI Indicator Light:
(1) Start the engine.
(2) Change the 4WD control switch from 2WD to 4H.
(3) Check the 4HI indicator light.
OK:
The 4HI indicator light comes on or the 4HI indicator light comes on after it
is b ...