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Air Conditioning (Diagnostic Codes & Circuit Tests): Other Lexus LX J200

Automatic HVAC System ~1909 words

PROCEDURE

  1. READ VALUE USING TECHSTREAM (FRONT AIR MIX DAMPER SERVO MOTOR) Use the Data List to check if the servo motor is functioning properly. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Mix Servo Targ Pulse (P) Front air mix damper servo motor (for front passenger side) target pulse / Min.: 8, Max.: 90 MAX COOL: 8 (pulse) MAX HOT: 90 (pulse) - OK The display is as specified in the normal condition. NG --> See step 2 OK --> See step 5
  2. REPLACE FRONT AIR MIX DAMPER SERVO MOTOR Replace the front air mix damper servo motor (for front passenger side). Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one. NEXT: Go to next step
  3. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385206-S26008362402011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385206-S26008362402011021400000) . OK DTC B1441 is not output. NG --> See step 6 OK --> See step 4
  4. REPLACE FRONT AIR MIX DAMPER SERVO MOTOR. Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000)
  5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-385194-S11934742822011021400000)
  6. REPLACE AIR CONDITIONING HARNESS ASSEMBLY. Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000)
  1. READ VALUE USING TECHSTREAM (REC/FRS DAMPER SERVO MOTOR) Use the Data List to check if the servo motor is functioning properly. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Inlet Damper Targ Pulse REC/FRS damper servo motor target pulse / Min.: 9, Max.: 37 RECIRCULATION: 37 (pulse) FRESH: 9 (pulse) - OK The display is as specified in the normal condition. NG --> See step 2 OK --> See step 5
  2. REPLACE REC/FRS DAMPER SERVO MOTOR Replace the REC/FRS damper servo motor. Refer to «DISASSEMBLY»(ref-385194-S36727465752011021400000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one. NEXT: Go to next step
  3. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385206-S26008362402011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385206-S26008362402011021400000) . OK DTC B1442 is not output. NG --> See step 6 OK --> See step 4
  4. REPLACE REC/FRS DAMPER SERVO MOTOR. Refer to «DISASSEMBLY»(ref-385194-S36727465752011021400000)
  5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-385194-S11934742822011021400000)
  6. REPLACE AIR CONDITIONING HARNESS ASSEMBLY. Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000)
  1. READ VALUE USING TECHSTREAM (AIR OUTLET DAMPER SERVO MOTOR) Use the Data List to check if the servo motor is functioning properly. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note A/O Damper FACE Pos(D) Air outlet damper servo motor (for driver side mode) target pulse / Min.: 6, Max.: 117 FACE: 109 (pulse) FACE2: 109 (pulse) FACE3: 117 (pulse) B/L1: 93 (pulse) B/L2: 81 (pulse) FOOT-D: 52 (pulse) FOOT-R: 41 (pulse) FOOT: 41 (pulse) F/D: 18 (pulse) DEF: 6 (pulse) - OK The display is as specified in the normal condition. NG --> See step 2 OK --> See step 5
  2. REPLACE AIR OUTLET DAMPER SERVO MOTOR Replace the air outlet damper servo motor (for driver side mode). Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one. NEXT: Go to next step
  3. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385206-S26008362402011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385206-S26008362402011021400000) . OK DTC B1443 is not output. NG --> See step 6 OK --> See step 4
  4. REPLACE AIR OUTLET DAMPER SERVO MOTOR. Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000)
  5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-385194-S11934742822011021400000)
  6. REPLACE AIR CONDITIONING HARNESS ASSEMBLY. Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000)
  1. READ VALUE USING TECHSTREAM (COOL AIR BYPASS DAMPER SERVO MOTOR) Use the Data List to check if the servo motor is functioning properly. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Cool Air Bypass Pulse Cool air bypass damper servo motor target pulse / Min.: 6, Max.: 57 Shut: 6 (pulse) Open: 57 (pulse) - OK The display is as specified in the normal condition. NG --> See step 2 OK --> See step 5
  2. REPLACE COOL AIR BYPASS DAMPER SERVO MOTOR Replace the cool air bypass damper servo motor. Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one. NEXT: Go to next step
  3. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385206-S26008362402011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385206-S26008362402011021400000) . OK DTC B1445 is not output. NG --> See step 6 OK --> See step 4
  4. REPLACE COOL AIR BYPASS DAMPER SERVO MOTOR. Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000)
  5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-385194-S11934742822011021400000)
  6. REPLACE AIR CONDITIONING HARNESS ASSEMBLY. Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000)
  1. READ VALUE USING TECHSTREAM (FRONT AIR MIX DAMPER SERVO MOTOR) Use the Data List to check if the servo motor is functioning properly. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Mix Servo Targ Pulse(D) Front air mix damper servo motor (for driver side) target pulse / Min.: 8, Max.: 90 MAX COOL: 90 (pulse) MAX HOT: 8 (pulse) - OK The display is as specified in the normal condition. NG --> See step 2 OK --> See step 5
  2. REPLACE FRONT AIR MIX DAMPER SERVO MOTOR Replace the front air mix damper servo motor (for driver side). Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one. NEXT: Go to next step
  3. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385206-S26008362402011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385206-S26008362402011021400000) . OK DTC B1446 is not output. NG --> See step 6 OK --> See step 4
  4. REPLACE FRONT AIR MIX DAMPER SERVO MOTOR. Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000)
  5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-385194-S11934742822011021400000)
  6. REPLACE AIR CONDITIONING HARNESS ASSEMBLY. Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000)
  1. READ VALUE USING TECHSTREAM (AIR OUTLET DAMPER SERVO MOTOR) Use the Data List to check if the servo motor is functioning properly. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note A/O Damper FACE Pos(P) Air outlet damper servo motor (for front passenger side mode) target pulse / Min.: 6, Max.: 117 FACE1: 117 (pulse) FACE2: 109 (pulse) B/L1: 93 (pulse) B/L2: 81 (pulse) FOOT-F: 41 (pulse) FOOT-R: 41 (pulse) FOOT-D: 52 (pulse) F/D: 18 (pulse) DEF: 6 (pulse) - OK The display is as specified in the normal condition. NG --> See step 2 OK --> See step 5
  2. REPLACE AIR OUTLET DAMPER SERVO MOTOR Replace the air outlet damper servo motor (for front passenger side mode). Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one. NEXT: Go to next step
  3. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385206-S26008362402011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385206-S26008362402011021400000) . OK DTC B1448 is not output. NG --> See step 6 OK --> See step 4
  4. REPLACE AIR OUTLET DAMPER SERVO MOTOR. Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000)
  5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-385194-S11934742822011021400000)
  6. REPLACE AIR CONDITIONING HARNESS ASSEMBLY. Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000)
  1. READ VALUE USING TECHSTREAM (FRONT AIR MIX DAMPER SERVO MOTOR) Use the Data List to check if the servo motor is functioning properly. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Mix Servo Targ Pls(F&R D) Front air mix damper servo motor (for driver side rear air flow) target pulse / Min.: 13, Max.: 41 MAX COOL: 13 (pulse) MAX HOT: 41 (pulse) - OK The display is as specified in the normal condition. NG --> See step 2 OK --> See step 5
  2. REPLACE FRONT AIR MIX DAMPER SERVO MOTOR Replace the front air mix damper servo motor (for driver side rear air flow). Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one. NEXT: Go to next step
  3. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385206-S26008362402011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385206-S26008362402011021400000) . OK DTC B1457 is not output. NG --> See step 6 OK --> See step 4
  4. REPLACE FRONT AIR MIX DAMPER SERVO MOTOR. Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000)
  5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-385194-S11934742822011021400000)
  6. REPLACE AIR CONDITIONING HARNESS ASSEMBLY. Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000)
  1. READ VALUE USING TECHSTREAM (FRONT AIR MIX DAMPER SERVO MOTOR) Use the Data List to check if the servo motor is functioning properly. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Mix Servo Targ Pls(F&R P) Front air mix damper servo motor (for front passenger side rear air flow) target pulse / Min.: 5, Max.: 33 MAX COOL: 33 (pulse) MAX HOT: 5 (pulse) - OK The display is as specified in the normal condition. NG --> See step 2 OK --> See step 5
  2. REPLACE FRONT AIR MIX DAMPER SERVO MOTOR Replace the front air mix damper servo motor (for front passenger side rear air flow). Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one. NEXT: Go to next step
  3. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385206-S26008362402011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385206-S26008362402011021400000) . OK DTC B1458 is not output. NG --> See step 6 OK --> See step 4
  4. REPLACE FRONT AIR MIX DAMPER SERVO MOTOR. Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000)
  5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-385194-S11934742822011021400000)
  6. REPLACE AIR CONDITIONING HARNESS ASSEMBLY. Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000)
  1. READ VALUE USING TECHSTREAM (AIR OUTLET DAMPER SERVO MOTOR) Use the Data List to check if the servo motor is functioning properly. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Outlet Servo Pls(F&R D) Air outlet damper servo motor (for rear seat mode) target pulse / Min.: 9, Max.: 79 FACE1: 9 (pulse) FACE2: 9 (pulse) B/L1: 28 (pulse) B/L2: 34 (pulse) FOOT-O: 41 (pulse) FOOT-D: 41 (pulse) FOOT-R: 41 (pulse) FOOT-F: 58 (pulse) F/D: 67 (pulse) DEF: 79 (pulse) - OK The display is as specified in the normal condition. NG --> See step 2 OK --> See step 5
  2. REPLACE AIR OUTLET DAMPER SERVO MOTOR Replace the air outlet damper servo motor (for rear seat mode). Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a normal one. NEXT: Go to next step
  3. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385206-S26008362402011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385206-S26008362402011021400000) . OK DTC B1486 is not output. NG --> See step 6 OK --> See step 4
  4. REPLACE AIR OUTLET DAMPER SERVO MOTOR. Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000)
  5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-385194-S11934742822011021400000)
  6. REPLACE AIR CONDITIONING HARNESS ASSEMBLY. Refer to «DISASSEMBLY»(ref-385194-S30073628532011021400000)
  1. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-385206-S26008362402011021400000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-385206-S26008362402011021400000) . RESULT Result Proceed to DTC B1499 is not output A DTC B1499 is output B B --> See step 3 A --> See step 2
  2. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-385196-S09917434812011021400000)
  3. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-385222-S11207754182011021400000)

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