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Air Conditioning System (Automatic) (Diagnostic Codes & Circuit Tests): Other Toyota Highlander II рестайлинг

Automatic HVAC System ~1261 words

PROCEDURE

  1. READ VALUE USING TECHSTREAM Connect Techstream to the DLC3. Turn the ignition switch on (IG) and turn Techstream main switch ON. Select the items below in the Data List, and read the value displayed on Techstream. DATA LIST / AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Mix Sensor Targ Pulse(P) Passenger side air mix control servo motor target pulse / Min.: 0, Max.: 255 MAX. COLD: 105 (pulse) MAX. COLD: 7 (pulse) - OK The display is as specified in the normal condition column. Result Result Proceed to NG A OK (Checking from PROBLEM SYMPTOMS TABLE) B OK (Checking from DTC) C B --> See step 3 C --> See step 4 A: Go to next step
  2. REPLACE AIR MIX CONTROL SERVO MOTOR Replace the air mix control servo motor, refer to «REMOVAL - Step 2»(ref-422495-S00352535972011092600000) . NEXT: Go to next step
  3. PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-422458-S16767677652011092600000)
  4. REPLACE AIR CONDITIONING AMPLIFIER. Refer to «REMOVAL - Step 6»(ref-422495-S41103746822011092600000)
  5. CHECK DTC OUTPUT Clear the DTC, refer to «DTC CHECK / CLEAR»(ref-422458-S26315744152011092600000) . Check for DTC, refer to «DTC CHECK / CLEAR»(ref-422458-S26315744152011092600000) . OK DTC B1441/41is not output. NG --> REPAIR OR REPLACE AIR CONDITIONING HARNESS OK --> END (AIR MIX CONTROL SERVO MOTOR IS DEFECTIVE)
  1. READ VALUE USING TECHSTREAM Connect Techstream to the DLC3. Turn the ignition switch on (IG) and turn Techstream main switch on. Select the items below in the Data List, and read the value displayed on Techstream. DATA LIST / AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Inlet Damper Targ Pulse Air inlet control servo motor target pulse / Min.: 0, Max.: 255 RECIRCULATION: 7 (pulse) FRESH: 28 (pulse) - OK The display is as specified in the normal condition column. Result Result Proceed to NG A OK (Checking from PROBLEM SYMPTOMS TABLE) B OK (Checking from DTC) C B --> See step 4 C --> See step 3 A: Go to next step
  2. REPLACE AIR INLET CONTROL SERVO MOTOR Replace the air inlet control servo motor. NEXT: Go to next step
  3. REPLACE AIR CONDITIONING AMPLIFIER. Refer to «REMOVAL - Step 6»(ref-422495-S41103746822011092600000)
  4. PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-422458-S16767677652011092600000)
  5. CHECK DTC OUTPUT Clear the DTC, refer to «DTC CHECK / CLEAR»(ref-422458-S26315744152011092600000) . Check for DTC, refer to «DTC CHECK / CLEAR»(ref-422458-S26315744152011092600000) . OK DTC B1442/42 is not output. NG --> REPAIR OR REPLACE AIR CONDITIONING HARNESS OK --> END (AIR INLET CONTROL SERVO MOTOR IS DEFECTIVE)
  1. READ VALUE USING TECHSTREAM Connect Techstream to the DLC3. Turn the ignition switch on (IG) and turn Techstream main switch on. Select the items below in the Data List, and read the value displayed on Techstream. DATA LIST / AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Outlet Servo Pulse(D) Air outlet control servo motor target pulse / Min.: 0, Max.: 255 FACE: 8 (pulse) B/L: 30 (pulse) FOOT: 67 (pulse) FOOT/DEF: 80 (pulse) DEF: 97 (pulse) - OK The display is as specified in the normal condition column. Result Result Proceed to NG A OK (Checking from PROBLEM SYMPTOMS TABLE) B OK (Checking from DTC) C B --> See step 4 C --> See step 3 A: Go to next step
  2. REPLACE AIR OUTLET CONTROL SERVO MOTOR Replace the air outlet control servo motor. NEXT: Go to next step
  3. REPLACE AIR CONDITIONING AMPLIFIER. Refer to «REMOVAL - Step 6»(ref-422495-S41103746822011092600000)
  4. PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-422458-S16767677652011092600000)
  5. CHECK DTC OUTPUT Clear the DTC, refer to «DTC CHECK / CLEAR»(ref-422458-S26315744152011092600000) . Check for DTC, refer to «DTC CHECK / CLEAR»(ref-422458-S26315744152011092600000) . OK DTC B1443/43 is not output. NG --> REPAIR OR REPLACE AIR CONDITIONING HARNESS OK --> END (AIR OUTLET CONTROL SERVO MOTOR IS DEFECTIVE)
  1. READ VALUE USING TECHSTREAM Connect Techstream to the DLC3. Turn the ignition switch on (IG) and turn Techstream main switch on. Select the items below in the Data List, and read the value displayed on Techstream. DATA LIST / AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Mix Sensor Targ Pulse(D) Driver side air mix control servo motor target pulse / Min.: 0, Max.: 255 MAX. COLD: 5 (pulse) MAX. HOT: 103 ()pulse - OK The display is as specified in the normal condition column. Result Result Proceed to NG A OK (Checking from PROBLEM SYMPTOMS TABLE) B OK (Checking from DTC) C B --> See step 3 C --> See step 4 A: Go to next step
  2. REPLACE AIR MIX CONTROL SERVO MOTOR Replace the air mix control servo motor, refer to «REMOVAL - Step 2»(ref-422495-S00352535972011092600000) . NEXT: Go to next step
  3. PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-422458-S16767677652011092600000)
  4. REPLACE AIR CONDITIONING AMPLIFIER. Refer to «REMOVAL - Step 6»(ref-422495-S41103746822011092600000)
  5. CHECK DTC OUTPUT Clear the DTC, refer to «DTC CHECK / CLEAR»(ref-422458-S26315744152011092600000) . Check for DTC, refer to «DTC CHECK / CLEAR»(ref-422458-S26315744152011092600000) . OK DTC B1446/46 is not output. NG --> REPAIR OR REPLACE AIR CONDITIONING HARNESS OK --> END (AIR MIX CONTROL SERVO MOTOR IS DEFECTIVE)
  1. READ VALUE USING TECHSTREAM Connect Techstream to the DLC3. Turn the ignition switch on (IG) and turn Techstream main switch on. Select the items below in the Data List, and read the value displayed on Techstream. DATA LIST / AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Diagnostic Note Air Outlet Servo Pulse(R) Rear air outlet control servo motor target pulse / Min.: 0, Max.: 255 Rr FACE: 83 (pulse) Rr B/L: 38 (pulse) Rr FOOT: 7 (pulse) - OK The display is as specified in the normal condition column. Result Result Proceed to NG A OK (Checking from PROBLEM SYMPTOMS TABLE) B OK (Checking from DTC) C B --> See step 4 C --> See step 5 A: Go to next step
  2. CHECK HARNESS AND CONNECTOR (REAR AIR CONDITIONING HARNESS - AIR CONDITIONING AMPLIFIER) Disconnect the N12 rear air conditioning harness connector. Disconnect the D38 amplifier connector. Measure the resistance according to the value(s) in the table below. Standard resistance Tester Connection Condition Specified Condition N12-2 (RBUG) - D38-21 (RBUG) Always Below 1 ohms N12-3 (RBUS) - D38-1 (RBUS) Always Below 1 ohms N12-4 (RBBU) - D38-23 (RBBU) Always Below 1 ohms D38-21 (RBUG) - Body ground Always 10 kohms or higher D38-1 (RBUS) - Body ground Always 10 kohms or higher D38-23 (RBBU) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. REPLACE REAR AIR OUTLET CONTROL SERVO MOTOR Replace the rear air outlet control servo motor. NEXT: Go to next step
  4. PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-422458-S16767677652011092600000)
  5. REPLACE AIR CONDITIONING AMPLIFIER. Refer to «REMOVAL - Step 6»(ref-422495-S41103746822011092600000)
  6. CHECK DTC OUTPUT Clear the DTC, refer to «DTC CHECK / CLEAR»(ref-422458-S26315744152011092600000) . Check for DTC, refer to «DTC CHECK / CLEAR»(ref-422458-S26315744152011092600000) . OK DTC B1449/49 is not output. NG --> REPAIR OR REPLACE REAR AIR CONDITIONING HARNESS OK --> END (REAR AIR OUTLET CONTROL SERVO MOTOR IS DEFECTIVE)
  1. CHECK DTC OUTPUT Clear the DTC, refer to «DTC CHECK / CLEAR»(ref-422458-S26315744152011092600000) . Check for DTC, refer to «DTC CHECK / CLEAR»(ref-422458-S26315744152011092600000) . OK DTC B1499/99 is not output NG --> See step 2 OK --> See step 3
  2. GO TO CAN COMMUNICATION SYSTEM. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-422513-S33013761642011092600000)
  3. USE SIMULATION METHOD TO CHECK. Refer to «HOW TO PROCEED WITH TROUBLESHOOTING»(ref-422289-S34804177702011092600000)