DTC B1443/43: Air Outlet Damper Control Servo Motor Circuit: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Operate the MODE switch.
5. Enter the following menus: Body / Air Conditioner / Data List.
6. Check the value(s) by referring to the table below.
   AIR CONDITIONER
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Air Outlet Servo Pulse (D) (Air Out Pulse-D)	Driver side air outlet servo motor target pulse / Min.: 0, Max.: 255	FACE: 47 (pulse) B/L: 37 (pulse) FOOT: 17 (pulse) FOOT/DEF: 9 (pulse) DEF: 5 (pulse)	-

   OK

   The display is as specified in the "Normal Condition" column.

   Result

   Result	Proceed to
   NG	A
   OK (When troubleshooting according to Problem Symptoms Table)	B
   OK (When troubleshooting according to DTC)	C

C → See step   5 

B → See step   4 

A: Go to next step 

1. Replace the air outlet control servo motor. Refer to DISASSEMBLY .

   HINT: 

   Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a known good one and check that the condition returns to normal.

2. Check for DTCs.

   Result

   Result	Proceed to
   DTC B1443/43 is output	A
   DTC B1443/43 is not output	B

B → See step   6 

A: Go to next step 

1. Replace the air conditioning harness. Refer to DISASSEMBLY .

   HINT: 

   Since the air conditioning harness cannot be inspected while it is removed from the vehicle, replace the air conditioning harness with a known good one and check that the condition returns to normal.

2. Check for DTCs.

   Result

   Result	Proceed to
   DTC B1443/43 is output	A
   DTC B1443/43 is not output	B

B → See step   7 

A → See step   5