DTC B1441/41: Air Mix Damper Control Servo Motor Circuit (Passenger Side): Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Operate the temperature adjustment 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 Mix Servo Targ Pulse (D) (Air Mix Pulse-D)	Driver side air mix servo motor target pulse / Min.: 0, Max.: 255	MAX. COLD: 93 (pulse) MAX. HOT: 6 (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 mix 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 B1441/41 is output	A
   DTC B1441/41 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 B1441/41 is output	A
   DTC B1441/41 is not output	B

B → See step   7 

A → See step   5