DESCRIPTION
This No. 3 air conditioning radiator damper servo sub-assembly (for driver side air mix) is controlled by the air conditioning amplifier assembly and moves the air mix damper (for driver side) to the desired position.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
B1446/46 |
Air mix damper position sensor (for driver side) value does not change even if air conditioning amplifier assembly operates air mix damper servo motor (for driver side) |
|
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 driver side temperature 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 Mix Damper Position (Driver Side) |
Air mix damper servo motor (for driver side) actual position / Min.: -14.0% Max.: 113.5% |
MAX COOL: 0.0% MAX HOT: 100.0% |
- |
Air Mix Damper Target (Driver Side) |
Air mix damper servo motor (for driver side) target position / Min.: -14.0% Max.: 113.5% |
MAX COOL: 0.0% MAX HOT: 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. 3 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY (FOR DRIVER SIDE AIR MIX) |
(a) Remove the No. 3 air conditioning radiator damper servo sub-assembly (for
driver side air mix) (See page ).
(b) Inspect the No. 3 air conditioning radiator damper servo sub-assembly (for
driver side air mix) (See page ).
NG | ![]() |
REPLACE NO. 3 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY (FOR DRIVER SIDE AIR MIX) |
|
3. |
CHECK HARNESS AND CONNECTOR (NO. 3 AIR CONDITIONING RADIATOR DAMPER SERVO SUB-ASSEMBLY - AIR CONDITIONING AMPLIFIER ASSEMBLY) |
(a) Disconnect the D30 No. 3 air conditioning radiator damper servo sub-assembly (for driver side air mix) connector.
(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 |
---|---|---|
D30-6 (MCD) - A35-12 (AMDC) |
Always |
Below 1 Ω |
D30-7 (MHD) - A35-11 (AMDH) |
Always |
Below 1 Ω |
D30-6 (MCD) or A35-12 (AMDC) - Body ground |
Always |
10 kΩ or higher |
D30-7 (MHD) or A35-11 (AMDH) - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Open in Bus 5 Main Bus Line
DESCRIPTION
There may be an open circuit in one of the CAN main bus lines when the resistance
between terminals 15 (CA5H) and 16 (CA5L) of the central gateway ECU (network gateway
ECU) is 70 Ω or higher.
Detection Item
Trouble Area
Resistance between ter ...
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT CAMSHAFT TIMING GEAR BOLT
(a) Remove the camshaft timing oil control solenoid assembly (See page
).
(b) Check that the plunger strokes when the plunger in the center of
the camshaft timing gear bolt is pressed.
Standard stroke:
4 ...
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT AIR CONDITIONER PRESSURE SENSOR (for Automatic Air Conditioning System)
(a) Check the wire harness.
(1) Disconnect the A34 air conditioner pressure sensor connector.
(2) Disconnect the A35 and A36 air conditioning amplifier assembly connector.
...