Inspection Procedure

1. Connect the Techstream to the DLC3
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Operate the driver side temperature adjustment switch
5. Select the item below in the Data List, and read the display on the Techstream.

   Data List / Air Conditioner 

   DATA LIST / 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 2S5	MAX COLD 5 (pulse) MAX HOT 104 (pulse)	-

   OK: The display is as specified in the normal condition column. 

   Result 

   RESULT DESCRIPTION
   
   

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

B: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE  (See PROBLEM SYMPTOMS TABLE  )

C: REPLACE A/C AMPLIFIER  (See REMOVAL  )

A: Go to next step 

1. Replace the air mix control servo motor (See 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 the DTC.

   Result 

   RESULT DESCRIPTION
   
   

   Result	Proceed to
   DTC B1446/46 is output	A
   DTC B1446/46 is not output	B

B: REPLACE AIR MIX CONTROL SERVO MOTOR  (See DISASSEMBLY  )

A: Go to next step 

1. Replace the air conditioning harness (See 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 the DTC.

   Result 

   RESULT DESCRIPTION
   
   

   Result	Proceed to
   DTC B1446/46 is output	A
   DTC B1446/46 is not output	B

B: REPLACE AIR CONDITIONING HARNESS  (See DISASSEMBLY  )

A: REPLACE A/C AMPLIFIER  (See REMOVAL  )