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Air Conditioning System (Automatic) (Diagnostic Codes & Circuit Tests): Other Toyota 4Runner V

Automatic HVAC System ~2053 words

PROCEDURE

  1. READ VALUE USING TECHSTREAM (FRONT PASSENGER SIDE AIR MIX DAMPER SERVO) Use the Data List to check if the damper servo sub-assembly (front passenger side air mix damper servo) is functioning properly. Refer to «DATA LIST / ACTIVE TEST»(ref-422144-S07427586662011092600000) . AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Mix Servo Targ Pulse (P) Damper servo sub-assembly (front passenger side air mix damper servo) target pulse / Min.: 0, Max.: 255 112 or 127 (pulse): MAX COOL 21 or 31 (pulse): MAX HOT - Air Mix Servo Actual Pulse (P) Damper servo sub-assembly (front passenger side air mix damper servo) actual pulse / Min.: 0, Max.: 255 112 or 127 (pulse): MAX COOL 21 or 31 (pulse): MAX HOT - OK The display is as specified in the normal condition column. RESULT Result Proceed to OK (When troubleshooting according to problem symptoms table) A OK (When troubleshooting according to the DTC) B NG C B --> See step 7 C --> See step 2 A --> See step 10
  2. PERFORM ACTIVE TEST USING TECHSTREAM (FRONT PASSENGER SIDE AIR MIX DAMPER SERVO) Select the Active Test, use the Techstream to generate a control command, and then check that the damper servo sub-assembly (front passenger side air mix damper servo) operates. Refer to «DATA LIST / ACTIVE TEST»(ref-422144-S07427586662011092600000) . AIR CONDITIONER Tester Display Test Part Control Range Diagnostic Note Air Mix Servo Targ Pulse (P) Damper servo sub-assembly (front passenger side air mix damper servo) pulse Min.: 0, Max.: 255 - OK Damper servo sub-assembly (front passenger side air mix damper servo) operates normally. NG --> See step 3 OK --> See step 8
  3. REPLACE DAMPER SERVO SUB-ASSEMBLY (FRONT PASSENGER SIDE AIR MIX DAMPER SERVO) Replace the damper servo sub-assembly (front passenger side air mix damper servo). Refer to «DISASSEMBLY»(ref-422116-S38662320362011092600000) . HINT: Since the damper servo sub-assembly (front passenger side air mix damper servo) cannot be inspected while it is removed from the vehicle, replace the damper servo sub-assembly (front passenger side air mix damper servo) with a new or normally functioning one. NEXT: Go to next step
  4. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-422144-S22143148882011092600000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-422144-S22143148882011092600000) . OK DTC B1441 is not output. NG --> See step 5 OK --> END (DAMPER SERVO SUB-ASSEMBLY [FRONT PASSENGER SIDE AIR MIX DAMPER SERVO] IS FAULTY)
  5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Temporarily replace the air conditioning amplifier assembly with a new or normally functioning one. Refer to «REMOVAL»(ref-422116-S31564571222011092600000) . NEXT: Go to next step
  6. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-422144-S22143148882011092600000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-422144-S22143148882011092600000) . OK DTC B1441 is not output. NG --> See step 9 OK --> END (AIR CONDITIONING AMPLIFIER ASSEMBLY IS FAULTY)
  7. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-422116-S31564571222011092600000)
  8. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-422116-S31564571222011092600000)
  9. REPLACE AIR CONDITIONING HARNESS ASSEMBLY. Refer to «DISASSEMBLY»(ref-422116-S38662320362011092600000)
  10. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-422144-S39567940892011092600000)
  1. READ VALUE USING TECHSTREAM (RECIRCULATION DAMPER SERVO) Use the Data List to check if the recirculation damper servo sub-assembly is functioning properly. Refer to «DATA LIST / ACTIVE TEST»(ref-422144-S07427586662011092600000) . AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Inlet Damper Targ Pulse Recirculation damper servo sub-assembly target pulse / Min.: 0, Max.: 255 7 (pulse): Recirculation 28 (pulse): Fresh - Air Inlet Damper Actual Pulse Recirculation damper servo sub-assembly actual pulse / Min.: 0, Max.: 255 7 (pulse): Recirculation 28 (pulse): Fresh - OK The display is as specified in the normal condition column. RESULT Result Proceed to OK (When troubleshooting according to problem symptoms table) A OK (When troubleshooting according to the DTC) B NG C B --> See step 7 C --> See step 2 A --> See step 10
  2. PERFORM ACTIVE TEST USING TECHSTREAM (RECIRCULATION DAMPER SERVO) Select the Active Test, use the Techstream to generate a control command, and then check that the recirculation damper servo sub-assembly operates. Refer to «DATA LIST / ACTIVE TEST»(ref-422144-S07427586662011092600000) . AIR CONDITIONER Tester Display Test Part Control Range Diagnostic Note Air Inlet Damper Targ Pulse Recirculation damper servo sub-assembly target pulse Min.: 0, Max.: 255 - OK Recirculation damper servo sub-assembly operates normally. NG --> See step 3 OK --> See step 8
  3. REPLACE RECIRCULATION DAMPER SERVO SUB-ASSEMBLY Replace the recirculation damper servo sub-assembly. Refer to «DISASSEMBLY»(ref-422116-S00636306832011092600000) . HINT: Since the recirculation damper servo sub-assembly cannot be inspected while it is removed from the vehicle, replace the recirculation damper servo sub-assembly with a new or normally functioning one. NEXT: Go to next step
  4. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-422144-S22143148882011092600000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-422144-S22143148882011092600000) . OK DTC B1442 is not output. NG --> See step 5 OK --> END (RECIRCULATION DAMPER SERVO SUB-ASSEMBLY IS FAULTY)
  5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Temporarily replace the air conditioning amplifier assembly with a new or normally functioning one. Refer to «REMOVAL»(ref-422116-S31564571222011092600000) . NEXT: Go to next step
  6. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-422144-S22143148882011092600000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-422144-S22143148882011092600000) . OK DTC B1442 is not output. NG --> See step 9 OK --> END (AIR CONDITIONING AMPLIFIER ASSEMBLY IS FAULTY)
  7. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-422116-S31564571222011092600000)
  8. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-422116-S31564571222011092600000)
  9. REPLACE AIR CONDITIONING HARNESS ASSEMBLY. Refer to «DISASSEMBLY»(ref-422116-S38662320362011092600000)
  10. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-422144-S39567940892011092600000)
  1. READ VALUE USING TECHSTREAM (MODE DAMPER SERVO) Use the Data List to check if the damper servo sub-assembly (mode damper servo) is functioning properly. Refer to «DATA LIST / ACTIVE TEST»(ref-422144-S07427586662011092600000) . AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Outlet Servo Pulse (D) Damper servo sub-assembly (mode damper servo) actual pulse / Min.: 0, Max.: 255 15 (pulse): FACE 1 23 (pulse): FACE 2 41 (pulse): B/L 65 or 73 (pulse): FOOT 83 or 95 (pulse): F/D 113 (pulse): DEF - Air Outlet Servo Actu Pulse (D) Damper servo sub-assembly (mode damper servo) actual pulse / Min.: 0, Max.: 255 15 (pulse): FACE 1 23 (pulse): FACE 2 41 (pulse): B/L 65 or 73 (pulse): FOOT 83 or 95 (pulse): F/D 113 (pulse): DEF - OK The display is as specified in the normal condition column. RESULT Result Proceed to OK (When troubleshooting according to problem symptoms table) A OK (When troubleshooting according to the DTC) B NG C B --> See step 7 C --> See step 2 A --> See step 10
  2. PERFORM ACTIVE TEST USING TECHSTREAM (MODE DAMPER SERVO) Select the Active Test, use the Techstream to generate a control command, and then check that the damper servo sub-assembly (mode damper servo) operates. Refer to «DATA LIST / ACTIVE TEST»(ref-422144-S07427586662011092600000) . AIR CONDITIONER Tester Display Test Part Control Range Diagnostic Note Air Outlet Servo Pulse (D) Damper servo sub-assembly (mode damper servo) pulse Min.: 0, Max.: 255 - OK Damper servo sub-assembly (mode damper servo) operates normally. NG --> See step 3 OK --> See step 8
  3. REPLACE DAMPER SERVO SUB-ASSEMBLY (MODE DAMPER SERVO) Replace the damper servo sub-assembly (mode damper servo). Refer to «DISASSEMBLY»(ref-422116-S38662320362011092600000) . HINT: Since the damper servo sub-assembly (mode damper servo) cannot be inspected while it is removed from the vehicle, replace the damper servo sub-assembly (mode damper servo) with a new or normally functioning one. NEXT: Go to next step
  4. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-422144-S22143148882011092600000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-422144-S22143148882011092600000) . OK DTC B1443 is not output. NG --> See step 5 OK --> END (DAMPER SERVO SUB-ASSEMBLY [MODE DAMPER SERVO] IS FAULTY)
  5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Temporarily replace the air conditioning amplifier assembly with a new or normally functioning one. Refer to «REMOVAL»(ref-422116-S31564571222011092600000) . NEXT: Go to next step
  6. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-422144-S22143148882011092600000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-422144-S22143148882011092600000) . OK DTC B1443 is not output. NG --> See step 9 OK --> END (AIR CONDITIONING AMPLIFIER ASSEMBLY IS FAULTY)
  7. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-422116-S31564571222011092600000)
  8. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-422116-S31564571222011092600000)
  9. REPLACE AIR CONDITIONING HARNESS ASSEMBLY. Refer to «DISASSEMBLY»(ref-422116-S38662320362011092600000)
  10. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-422144-S39567940892011092600000)
  1. READ VALUE USING TECHSTREAM (DRIVER SIDE AIR MIX DAMPER SERVO) Use the Data List to check if the damper servo sub-assembly (driver side air mix damper servo) is functioning properly. Refer to «DATA LIST / ACTIVE TEST»(ref-422144-S07427586662011092600000) . AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Mix Servo Targ Pulse (D) Damper servo sub-assembly (driver side air mix damper servo) target pulse / Min.: 0, Max.: 255 107 (pulse): MAX COOL 26 (pulse): MAX HOT - Air Mix Servo Actual Pulse (D) Damper servo sub-assembly (driver side air mix damper servo) actual pulse / Min.: 0, Max.: 255 107 (pulse): MAX COOL 26 (pulse): MAX HOT - OK The display is as specified in the normal condition column. RESULT Result Proceed to OK (When troubleshooting according to problem symptoms table) A OK (When troubleshooting according to the DTC) B NG C B --> See step 7 C --> See step 2 A --> See step 10
  2. PERFORM ACTIVE TEST USING TECHSTREAM (DRIVER SIDE AIR MIX DAMPER SERVO) Select the Active Test, use the Techstream to generate a control command, and then check that the damper servo sub-assembly (driver side air mix damper servo) operates. Refer to «DATA LIST / ACTIVE TEST»(ref-422144-S07427586662011092600000) . AIR CONDITIONER Tester Display Test Part Control Range Diagnostic Note Air Mix Servo Targ Pulse (D) Damper servo sub-assembly (driver side air mix damper servo) target pulse Min.: 0, Max.: 255 - OK Damper servo sub-assembly (driver side air mix damper servo) operates normally. NG --> See step 3 OK --> See step 8
  3. REPLACE DAMPER SERVO SUB-ASSEMBLY (DRIVER SIDE AIR MIX DAMPER SERVO) Replace the damper servo sub-assembly (driver side air mix damper servo). Refer to «DISASSEMBLY»(ref-422116-S38662320362011092600000) . HINT: Since the damper servo sub-assembly (driver side air mix damper servo) cannot be inspected while it is removed from the vehicle, replace the damper servo sub-assembly (driver side air mix damper servo) with a new or normally functioning one. NEXT: Go to next step
  4. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-422144-S22143148882011092600000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-422144-S22143148882011092600000) . OK DTC B1446 is not output. NG --> See step 5 OK --> END (DAMPER SERVO SUB-ASSEMBLY [DRIVER SIDE AIR MIX DAMPER SERVO] IS FAULTY)
  5. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Temporarily replace the air conditioning amplifier assembly with a new or normally functioning one. Refer to «REMOVAL»(ref-422116-S31564571222011092600000) . NEXT: Go to next step
  6. CHECK FOR DTC Clear the DTCs. Refer to «DTC CHECK / CLEAR»(ref-422144-S22143148882011092600000) . Check for DTCs. Refer to «DTC CHECK / CLEAR»(ref-422144-S22143148882011092600000) . OK DTC B1446 is not output. NG --> See step 9 OK --> END (AIR CONDITIONING AMPLIFIER ASSEMBLY IS FAULTY)
  7. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-422116-S31564571222011092600000)
  8. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-422116-S31564571222011092600000)
  9. REPLACE AIR CONDITIONING HARNESS ASSEMBLY. Refer to «DISASSEMBLY»(ref-422116-S38662320362011092600000)
  10. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-422144-S39567940892011092600000)
  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) Use the Techstream to check if the CAN communication system is functioning normally. RESULT Result Proceed to CAN DTC is not output A CAN DTC is output B B --> See step 2 A --> See step 3
  2. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-422172-S35406285762011092600000)
  3. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-421949-S30781788442011092600000)
  1. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER - GENERATOR) Disconnect the F42 amplifier connector. Disconnect the C5 generator connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F42-25 (ALT) - C5-3 (M) Always Below 1 ohms F42-25 (ALT) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 2
  2. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-422144-S39567940892011092600000)

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