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Air Conditioning (Diagnostics Codes & Circuit Tests): Other Lexus HS I

Automatic HVAC System 2 illustrations ~4047 words

PROCEDURE

  1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Operate the front passenger side temperature adjustment switch. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Air Mix Servo Targ Pulse (P) Passenger side air mix servo motor target pulse / Min.: 0, Max.: 255 MAX. COLD: 6 (pulse) MAX. HOT: 93 (pulse) Air Mix Servo Actual Pulse (P) Passenger side air mix servo motor actual pulse / Min.: 0, Max.: 255 MAX. COLD: 6 (pulse) MAX. HOT: 93 (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 the DTC) C C --> See step 6 B --> See step 5 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Active Test. Check the operation by referring to the table below. AIR CONDITIONER Tester Display Test Part Control Range Air Mix Servo Targ Pulse (P) Air mix servo motor pulse (P side) Min.: 0, Max.: 255 OK Air temperature changes in accordance with each control range. NG --> See step 3 OK --> See step 6
  3. INSPECT NO. 1 AIR MIX CONTROL SERVO MOTOR (AIR MIX CONTROL SERVO MOTOR) Replace the No. 1 air mix control servo motor (air mix control servo motor). Refer to «REMOVAL»(ref-398224-S22867237812011051600000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1441/41 is output A DTC B1441/41 is not output B B --> END (AIR MIX CONTROL SERVO MOTOR WAS DEFECTIVE) A: Go to next step
  4. INSPECT AIR CONDITIONING HARNESS Replace the air conditioning harness. Refer to «DISASSEMBLY»(ref-398224-S13686817912011051600000) . HINT: Since the air conditioning harness cannot be inspected while it is removed from the vehicle, replace the air conditioning harness with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1441/41 is output A DTC B1441/41 is not output B B --> END (AIR CONDITIONING HARNESS WAS DEFECTIVE) A --> See step 6
  5. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-398247-S14990846712011051600000)
  6. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-398224-S23203152222011051600000)
  1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Operate the R/F (Recirculation/Fresh) switch. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Air Inlet Damper Targ Pulse Air inlet servo motor target pulse / Min.: 0, Max.: 255 RECIRCULATION: 19 (pulse) FRESH: 7 (pulse) Air Inlet Damper Actual Pulse Air inlet servo motor actual pulse / Min.: 0, Max.: 255 RECIRCULATION: 19 (pulse) FRESH: 7 (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 the DTC) C C --> See step 6 B --> See step 5 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Active Test. Check the operation by referring to the table below. AIR CONDITIONER Tester Display Test Part Control Range Air Inlet Damper Targ Pulse Air inlet damper target pulse Min.: 0, Max.: 255 OK Recirculation damper position changes in accordance with each control range. NG --> See step 3 OK --> See step 6
  3. INSPECT AIR INLET CONTROL SERVO MOTOR Replace the air inlet control servo motor. Refer to «DISASSEMBLY»(ref-398224-S24707083452011051600000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1442/42 is output A DTC B1442/42 is not output B B --> END (AIR INLET CONTROL SERVO MOTOR WAS DEFECTIVE) A: Go to next step
  4. INSPECT AIR CONDITIONING HARNESS Replace the air conditioning harness. Refer to «GENERAL INFORMATION»(ref-398089-S07584535382011051600000) . HINT: Since the air conditioning harness cannot be inspected while it is removed from the vehicle, replace the air conditioning harness with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1442/42 is output A DTC B1442/42 is not output B B --> END (AIR CONDITIONING HARNESS WAS DEFECTIVE) A --> See step 6
  5. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-398247-S14990846712011051600000)
  6. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-398224-S23203152222011051600000)
  1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Operate the MODE switch. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Air Outlet Servo Pulse (D) Air outlet servo motor target pulse / Min.: 0, Max.: 255 FACE: 47 (pulse) B/L: 37 (pulse) FOOT: 18 or 23 (pulse) FOOT/DEF: 9 (pulse) DEF: 5 (pulse) Air Outlet Servo Actu Pulse (D) Air outlet servo motor actual pulse / Min.: 0, Max.: 255 FACE: 47 (pulse) B/L: 37 (pulse) FOOT: 18 or 23 (pulse) FOOT/DEF: 9 (pulse) DEF: 5 (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 the DTC) C C --> See step 6 B --> See step 5 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Active Test. Check the operation by referring to the table below. AIR CONDITIONER Tester Display Test Part Control Rage Air Outlet Servo Pulse (D) Air outlet servo motor pulse Min.: 0, Max.: 255 OK Air flow position changes in accordance with each control range. NG --> See step 3 OK --> See step 6
  3. INSPECT NO. 1 AIR MIX CONTROL SERVO MOTOR (AIR OUTLET CONTROL SERVO MOTOR) Replace the No. 1 air mix control servo motor (air outlet control servo motor). Refer to «REMOVAL»(ref-398224-S22867237812011051600000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1443/43 is output A DTC B1443/43 is not output B B --> END (AIR OUTLET CONTROL SERVO MOTOR WAS DEFECTIVE) A: Go to next step
  4. INSPECT AIR CONDITIONING HARNESS Replace the air conditioning harness. Refer to «DISASSEMBLY»(ref-398224-S13686817912011051600000) . HINT: Since the air conditioning harness cannot be inspected while it is removed from the vehicle, replace the air conditioning harness with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1443/43 is output A DTC B1443/43 is not output B B --> END (AIR CONDITIONING HARNESS WAS DEFECTIVE) A --> See step 6
  5. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-398247-S14990846712011051600000)
  6. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-398224-S23203152222011051600000)
  1. READ VALUE USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Operate the driver side temperature adjustment switch. Enter the following menus: Body Electrical / Air Conditioner / Data List. Check the value(s) by referring to the table below. AIR CONDITIONER Tester Display Measurement Item/Range Normal Condition Air Mix Servo Targ Pulse (D) Driver side air mix servo motor target pulse / Min.: 0, Max.: 255 MAX. COLD: 92 (pulse) MAX. HOT: 5 (pulse) Air Mix Servo Actual Pulse (D) Driver side air mix servo motor actual pulse / Min.: 0, Max.: 255 MAX. COLD: 92 (pulse) MAX. HOT: 5 (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 the DTC) C C --> See step 6 B --> See step 5 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Active Test. Check the operation by referring to the table below. AIR CONDITIONER Tester Display Test Part Control Range Air Mix Servo Targ Pulse (D) Air mix servo motor pulse (D side) Min.: 0, Max.: 255 OK Air temperature changes in accordance with each control range. NG --> See step 3 OK --> See step 6
  3. INSPECT AIR MIX CONTROL SERVO MOTOR Replace the No. 1 air mix control servo motor (air mix control servo motor). Refer to «REMOVAL»(ref-398224-S22867237812011051600000) . HINT: Since the servo motor cannot be inspected while it is removed from the vehicle, replace the servo motor with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1446/46 is output A DTC B1446/46 is not output B B --> END (AIR MIX CONTROL SERVO MOTOR WAS DEFECTIVE) A: Go to next step
  4. INSPECT AIR CONDITIONING HARNESS Replace the air conditioning harness. Refer to «DISASSEMBLY»(ref-398224-S13686817912011051600000) . HINT: Since the air conditioning harness cannot be inspected while it is removed from the vehicle, replace the air conditioning harness with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1446/46 is output A DTC B1446/46 is not output B B --> END (AIR CONDITIONING HARNESS WAS DEFECTIVE) A --> See step 6
  5. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-398247-S14990846712011051600000)
  6. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-398224-S23203152222011051600000)
  1. CHECK 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 3 A --> See step 2
  2. REPLACE COMPRESSOR WITH MOTOR ASSEMBLY. Refer to «REMOVAL»(ref-398224-S29778290172011051600000)
  3. GO TO CAN COMMUNICATION SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-398235-S04349864842011051600000)
  1. CHECK 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 3 A --> See step 2
  2. REPLACE COMPRESSOR WITH MOTOR ASSEMBLY. Refer to «REMOVAL»(ref-398224-S29778290172011051600000)
  3. GO TO CAN COMMUNICATION SYSTEM. Refer to «DIAGNOSIS SYSTEM»(ref-398235-S15853483682011051600000)
  1. CHECK 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 4 A: Go to next step
  2. PERFORM ACTIVE TEST USING TECHSTREAM Connect the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test. Check the operation by referring to the table below. ENGINE Tester Display Test Part Control Range Control the Electric Cooling Fan Electrical fan OFF, ON OK Electrical fan operates smoothly. NG --> See step 5 OK: Go to next step
  3. CHECK REFRIGERANT PRESSURE Install the manifold gauge set. Refer to «REPLACEMENT»(ref-398224-S37769964962011051600000) . Read the manifold gauge pressure when the following conditions are established. Prepare the vehicle according to the chart below. Item Condition Vehicle Doors All fully open Compressor Speed 5200 rpm Temperature Setting MAX COLD Blower Speed HI A/C Switch ON R/F Switch RECIRCULATION (30 to 35°C (86 to 95°F)) Standard Pressure Low pressure side 0.15 to 0.25 MPa (1.5 to 2.5 kgf/cm 2 , 22 to 36 psi) High pressure side 1.37 to 1.57 MPa (14 to 16 kgf/cm 2 , 199 to 228 psi) NG --> See step 6 OK --> See step 7
  4. GO TO CAN COMMUNICATION SYSTEM. Refer to «DIAGNOSIS SYSTEM»(ref-398235-S15853483682011051600000)
  5. GO TO COOLING FAN SYSTEM. Refer to «Cooling Fan Circuit»(ref-398243-S41232609942011051600000)
  6. CHARGE REFRIGERANT. Refer to «REPLACEMENT»(ref-398224-S37769964962011051600000)
  7. REPLACE COMPRESSOR WITH MOTOR ASSEMBLY. Refer to «REMOVAL»(ref-398224-S29778290172011051600000)
  1. CHECK 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 3 A --> See step 2
  2. REPLACE COMPRESSOR WITH MOTOR ASSEMBLY. Refer to «REMOVAL»(ref-398224-S29778290172011051600000)
  3. GO TO CAN COMMUNICATION SYSTEM. Refer to «DIAGNOSIS SYSTEM»(ref-398235-S15853483682011051600000)
  1. CHECK 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 9 A: Go to next step
  2. CHECK DIAGNOSTIC TROUBLE CODE Check if DTCs for the hybrid control system are output using the Techstream. Result Result Proceed to DTC is not output A Only DTC P3108 is output A DTCs other than P3108 are output B B --> See step 10 A: Go to next step
  3. CHECK HARNESS AND CONNECTOR (COMPRESSOR WITH MOTOR ASSEMBLY - BODY GROUND) WARNING: Do not disconnect the connector on the high-voltage side. Disconnect the compressor with motor assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C26-5 (GND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (COMPRESSOR WITH MOTOR ASSEMBLY - BATTERY, GROUND) Turn the power switch on (IG). Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition C26-6 (IG1) - C26-5 (GND) Power switch on (IG) 11 to 14 V Power switch off Below 1 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - COMPRESSOR WITH MOTOR) Disconnect the hybrid vehicle control ECU connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition C26-1 (CLK) - C28-18 (CLK) Always Below 1 ohms C26-2 (DIN) - C28-20 (ITE) Always Below 1 ohms C26-3 (DOUT) - C28-19 (ETI) Always Below 1 ohms C26-1 (CLK) - Body ground Always 10 kohms or higher C26-2 (DIN) - Body ground Always 10 kohms or higher C26-3 (DOUT) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  6. INSPECT ELECTRIC VEHICLE FUSE WARNING: Be sure to wear insulated gloves. Turn the power switch off. Remove the service plug grip. WARNING: Do not touch the high-voltage connectors or terminals for 10 minutes after the service plug grip is removed. NOTE: Do not start the engine with the service plug grip removed because it may cause a malfunction. Remove the inverter terminal cover. NOTE: Be sure to prevent foreign objects or water from entering the inverter with converter assembly. Check that bolts A and B are tightened securely. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Item (Tester Connection) Condition Specified Condition ELECTRIC VEHICLE fuse Always Below 1 ohms TEXT IN ILLUSTRATION *1 Inverter with Converter Assembly *2 Electric Vehicle Fuse NG --> REPLACE ELECTRIC VEHICLE FUSE OK: Go to next step
  7. INSPECT NO. 2 ENGINE WIRE WARNING: Be sure to wear insulated gloves. Disconnect the No. 2 engine wire connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition D1-1 (PE) - D2-1 (ACPE) Always Below 1 ohms D1-2 (PB) - D2-2 (ACPB) Always Below 1 ohms D1-1 (PE) - Body ground Always 10 kohms or higher D1-2 (PB) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Front view of wire harness connector (to Compressor with Motor Assembly) *2 Front view of wire harness connector (to Inverter with Converter Assembly) NG --> See step 11 OK: Go to next step
  8. REPLACE COMPRESSOR WITH MOTOR ASSEMBLY Replace the compressor with motor assembly. Refer to «GENERAL INFORMATION»(ref-398089-S07584535382011051600000) . HINT: Since the compressor with motor assembly cannot be inspected while it is removed from the vehicle, replace the compressor with motor assembly with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B1498/98 is not output A DTC B1498/98 is output B B --> See step 12 A --> END (COMPRESSOR WITH MOTOR ASSEMBLY WAS DEFECTIVE)
  9. GO TO CAN COMMUNICATION SYSTEM. Refer to «DIAGNOSIS SYSTEM»(ref-398235-S15853483682011051600000)
  10. GO TO HYBRID CONTROL SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-398094-S11405263312011051600000)
  11. REPLACE NO. 2 ENGINE WIRE. Refer to «DISASSEMBLY»(ref-398224-S13686817912011051600000)
  12. REPLACE POWER MANAGEMENT CONTROL ECU. Refer to «REMOVAL»(ref-398241-S24139773802011051600000)
  1. PERFORM ACTIVE TEST USING TECHSTREAM Connector the Techstream to the DLC3. Turn the power switch on (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Air Conditioner / Active Test. Check the operation by referring to the table below. AIR CONDITIONER Tester Display Test Part Control Range Air Purifier Mode Plasmacluster (ion generator) Stop, Ion, Clean OK Plasmacluster (ion generator) operates and mode changes. Result Result Proceed to NG A OK (When troubleshooting according to Problem Symptoms Table) B OK (When troubleshooting according to the DTC) C C --> See step 8 B --> See step 6 A: Go to next step
  2. CHECK HARNESS AND CONNECTOR (PLASMACLUSTER (ION GENERATOR) - BODY GROUND) Disconnect the plasmacluster (ion generator) connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition z2-5 (GND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (PLASMACLUSTER (ION GENERATOR) - BATTERY) Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition z2-2 (IG) - Body ground Power switch off Below 1 V z2-2 (IG) - Body ground Power switch on (IG) 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. CHECK HARNESS AND CONNECTOR (PLASMACLUSTER (ION GENERATOR) - A/C AMPLIFIER) Disconnect the air conditioning amplifier assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F47-39 (PCD1) - z2-4 (PCL) Always Below 1 ohms F48-5 (PLSM) - z2-1 (IG+) Always Below 1 ohms F47-39 (PCD1) - Body ground Always 10 kohms or higher F48-5 (PLSM) - Body ground Always 10 kohms or higher NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  5. INSPECT PLASMACLUSTER (ION GENERATOR) Replace the plasmacluster (ion generator). Refer to «REMOVAL»(ref-398224-S34850498832011051600000) . HINT: Since the plasmacluster (ion generator) cannot be inspected while it is removed from the vehicle, replace the plasmacluster (ion generator) with a new or a known good one and check that the condition returns to normal. Check for the DTC. Result Result Proceed to DTC B14A1 is output A DTC B14A1 is not output B B --> See step 7 A --> See step 8
  6. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-398247-S14990846712011051600000)
  7. REPLACE PLASMACLUSTER (ION GENERATOR). Refer to «REMOVAL»(ref-398224-S34850498832011051600000)
  8. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to «REMOVAL»(ref-398224-S23203152222011051600000)

Scheme 140

Scheme 140: DESCRIPTION
Scheme 140: DESCRIPTION

The solar sensor is installed on the upper side of the instrument panel. It detects sunlight to control air conditioning AUTO mode. The output voltage from the solar sensor varies in accordance with the amount of sunlight. When the amount of sunlight increases, the output voltage increases. As the sunlight decreases, the output voltage decreases. The air conditioning amplifier assembly detects changes in the output voltage from the solar sensor.

DTC No.DTC Detection ConditionTrouble Area
B14A2Short in driver side solar sensor circuitSolar sensor Harness or connector between solar sensor and air conditioning amplifier assembly Harness or connector between solar sensor and main body ECU (multiplex network body ECU) Main body ECU (multiplex network body ECU) Air conditioning amplifier assembly

Scheme 141

Scheme 141: WIRING DIAGRAM
Scheme 141: WIRING DIAGRAM
  1. CAN APPROPRIATE CAN COMMUNICATION SERVICE INFORMATION HINT: Refer to CAN Communication System. Refer to «DIAGNOSIS SYSTEM»(ref-398235-S15853483682011051600000) . NEXT --> END
  1. CONFIRM MODEL Result Result Proceed to w/o Navigation System A w/ Navigation System B B --> See step 5 A: Go to next step
  2. CHECK LIN COMMUNICATION CIRCUIT Check for an open or short in all LIN circuits. Refer to «DTC CHECK / CLEAR»(ref-398321-S04390048072011051600000) . OK There is no open or short circuit. NG --> See step 9 OK: Go to next step
  3. CHECK HARNESS AND CONNECTOR (POWER SOURCE, GROUND) Disconnect the integration control and panel assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F59-8 (+B) - Body ground Always 11 to 14 V F59-9 (IG+) - Body ground Power switch off Below 1 V Power switch on (IG) 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F59-3 (GND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  4. REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY Replace the integration control and panel assembly with a new or a known good one. Refer to «REMOVAL»(ref-398224-S05986382912011051600000) . OK The integration control and panel assembly assembly operation returns to normal. NG --> See step 10 OK --> END
  5. CHECK CAN COMMUNICATION SYSTEM Use the Techstream to check if the CAN communication system is functioning normally. Refer to «DIAGNOSIS SYSTEM»(ref-398235-S15853483682011051600000) . Result Result Proceed to CAN DTC is not output A CAN DTC is output B B --> REPAIR OR REPLACE HARNESS OR CONNECTOR A: Go to next step
  6. CHECK LIN COMMUNICATION CIRCUIT Check for an open or short in all LIN circuits. Refer to «DTC CHECK / CLEAR»(ref-398321-S04390048072011051600000) . OK There is no open or short circuit. NG --> See step 9 OK: Go to next step
  7. CHECK HARNESS AND CONNECTOR (POWER SOURCE, GROUND) Disconnect the integration control and panel assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F57-8 (+B) - Body ground Power switch off 11 to 14 V F57-9 (IG+) - Body ground Power switch off Below 1 V Power switch on (IG) 11 to 14 V Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F57-3 (GND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  8. REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY Replace the integration control and panel assembly with a new or a known good one. Refer to «REMOVAL»(ref-398224-S05986382912011051600000) . OK The integration control and panel assembly assembly operation returns to normal. NG --> See step 10 OK --> END
  9. GO TO LIN COMMUNICATION SYSTEM. Refer to «DIAGNOSTIC TROUBLE CODE CHART»(ref-398321-S18993057102011051600000)
  10. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-398247-S14990846712011051600000)
  1. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - BATTERY) Disconnect the air conditioning amplifier assembly connector. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition F47-21 (B) - Body ground Power switch off 11 to 14 V NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK: Go to next step
  2. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - BODY GROUND) Disconnect the air conditioning amplifier assembly connector. Measure the resistance according to the value(s) in the table below. Standard Resistance Tester Connection Condition Specified Condition F47-14 (GND) - Body ground Always Below 1 ohms NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR OK --> See step 3
  3. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE»(ref-398247-S14990846712011051600000)

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