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Air Conditioning: Removal & Installation Lexus IS II

Automatic HVAC System 32 illustrations ~1591 words

INSTALLATION

  1. INSTALL AMBIENT TEMPERATURE SENSOR Install the ambient temperature sensor with the clamp. Connect the connector.
  2. INSTALL FRONT BUMPER ASSEMBLY
  3. INSTALL COOL AIR INTAKE DUCT SEAL (See «INSTALLATION»(ref-235451-S29453453712006062200000) )
  4. PREPARE VEHICLE FOR FOG LIGHT AIM (See «ADJUSTMENT»(ref-235577-S30388197102006062400000) )
  5. PREPARE FOR FOG LIGHT AIMING (See «ADJUSTMENT»(ref-235577-S30388197102006062400000) )
  6. INSPECT FOG LIGHT AIMING (See «ADJUSTMENT»(ref-235577-S30388197102006062400000) )
  7. ADJUST FOG LIGHT AIMING (See «ADJUSTMENT»(ref-235577-S30388197102006062400000) )

Scheme 242

Scheme 242
Scheme 242

Scheme 243

Scheme 243: ON-VEHICLE INSPECTION
Scheme 243: ON-VEHICLE INSPECTION
  1. INSPECT EVAPORATOR TEMPERATURE SENSOR Measure the resistance according to the value(s) in the table below. Standard resistance RESISTANCE SPECIFICATION Tester Connection Condition Specified Condition e1-5 - e1-6 -10°C (14°F) 7.30 to 9.10 kohms e1-5 - e1-6 -5°C (23°F) 5.65 to 6.95 kohms e1-5 - e1-6 0°C (32°F) 4.40 to 5.35 kohms e1-5 - e1-6 5°C (41°F) 3.40 to 4.15 kohms e1-5 - e1-6 10°C (50°F) 2.70 to 3.25 kohms e1-5 - e1-6 15°C (59°F) 2.14 to 2.58 kohms e1-5 - e1-6 20°C (68°F) 1.71 to 2.05 kohms e1-5 - e1-6 25°C (77°F) 1.38 to 1.64 kohms e1-5 - e1-6 30°C (86°F) 1.11 to 1.32 kohms NOTE: Even slightly touching the sensor may change the resistance value. Be sure to hold the connector of the sensor. When measuring, the sensor temperature must be the same as the ambient temperature. HINT: As the temperature increases, the resistance decreases (see the graph). If the resistance is not as specified, replace the evaporator temperature sensor.

Scheme 244

Scheme 244: COMPONENTS
Scheme 244: COMPONENTS

Scheme 245

Scheme 245: REMOVAL
Scheme 245: REMOVAL
  1. REMOVE COOL AIR INTAKE DUCT SEAL (See «REMOVAL»(ref-235598-S24774280692006062400000) )
  2. REMOVE SMOG VENTILATION SENSOR Disconnect the connector. Remove the bolt and smog ventilation sensor.

Scheme 246

Scheme 246: INSPECTION
Scheme 246: INSPECTION

Scheme 247

Scheme 247
Scheme 247
  1. REMOVE SMOG VENTILATION SENSOR HC, CO Apply battery voltage between terminals 3 (IG) and 6 (E). Allow exhaust gas (HC, CO) to travel to the sensing portion of the smog ventilation sensor, and measure the resistance between terminals 1 (SG) and 2 (DGS). OK: When the sensor is exposed to the exhaust gas, the resistance increases. HINT: The resistance before blowing exhaust gas is 10 kohms to 40 kohms. If the resistance is not as specified, replace the smog ventilation sensor. NOx Apply battery voltage between terminals 3 (IG) and 6 (E). Allow exhaust gas (NOx) to travel to the sensing portion of the smog ventilation sensor, and measure the resistance between terminals 1 (SG) and 4 (DGS1). OK: When the sensor is exposed to the exhaust gas, the resistance increases. HINT: The resistance before blowing exhaust gas is 10 kohms to 40 kohms. If the resistance is not as specified, replace the smog ventilation sensor.
  1. INSTALL SMOG VENTILATION SENSOR Install the smog ventilation sensor with the bolt. Torque: 9.8 N*m (100 kgf*cm, 7 ft.*lbf) Connect the connector.
  2. INSTALL COOL AIR INTAKE DUCT SEAL (See «INSTALLATION»(ref-235451-S29453453712006062200000) )

Scheme 248

Scheme 248
Scheme 248

Scheme 249

Scheme 249: ON-VEHICLE INSPECTION
Scheme 249: ON-VEHICLE INSPECTION

Scheme 250

Scheme 250
Scheme 250
  1. INSPECT PRESSURE SENSOR Pressure sensor Install the manifold gauge set (See «ON-VEHICLE INSPECTION»(ref-235579-S02659531892006062400000) ). Connect the three 1.5 V dry cell batterie's positive (+) lead to terminal 3 and the negative (-) lead to terminal 1. Then connect the voltmeter's positive (+) lead to terminal 2 and the negative (-) lead to terminal 1. Measure the voltage. OK: The voltage changes according to refrigerant pressure, as shown in the graph. If the voltage is not as specified, replace the pressure sensor.
  2. INSPECT LOW PRESSURE SENSOR Low pressure sensor Install the manifold gauge set (See «ON-VEHICLE INSPECTION»(ref-235579-S02659531892006062400000) ). Connect the three 1.5 V dry cell batterie's positive (+) lead to terminal 3 and the negative (-) lead to terminal 1. Then connect the voltmeter's positive (+) lead to terminal 2 and the negative (-) lead to terminal 1. Measure the voltage. OK: The voltage changes according to refrigerant pressure, as shown in the graph. If the voltage is not as specified, replace the low pressure sensor.

Scheme 251

Scheme 251: COMPONENTS
Scheme 251: COMPONENTS

Scheme 252

Scheme 252: REMOVAL
Scheme 252: REMOVAL

Scheme 253

Scheme 253
Scheme 253
  1. REMOVE HEATER WATER OUTLET HOSE (See «REMOVAL»(ref-235579-S01894918482006062400000) )
  2. REMOVE HEATER WATER INLET HOSE (See «REMOVAL»(ref-235579-S01894918482006062400000) )
  3. REMOVE WATER BY-PASS GLOW PLUG Remove the 2 grommets, 2 nuts, 2 spring washers, and 2 washers. Disconnect the heater blower wire. Remove the water by-pass glow plug. NOTE: Prepare a container or a piece of cloth in case of coolant leakage.

Scheme 254

Scheme 254: INSPECTION
Scheme 254: INSPECTION
  1. INSPECT WATER BY-PASS GLOW PLUG Measure the resistance according to the value(s) in the table below. Standard resistance: Below 1 ohms If the resistance is not as specified, replace the water by-pass glow plug.

Scheme 255

Scheme 255: INSTALLATION
Scheme 255: INSTALLATION
  1. INSTALL WATER BY-PASS GLOW PLUG Install the water by-pass glow plug. Torque: 15 N*m (157 kgf*cm, 11 ft.*lbf) Install the heater blower wire with the 2 nuts and 2 grommets. Torque: 2.7 N*m (28 kgf*cm, 24 in.*lbf)
  2. INSTALL HEATER WATER INLET HOSE (See «INSTALLATION»(ref-235579-S21480697162006062400000) )
  3. INSTALL HEATER WATER OUTLET HOSE (See «INSTALLATION»(ref-235579-S21480697162006062400000) )
  4. ADD ENGINE COOLANT (See «COOLANT»(ref-235453-S27628624852006062200000) )
  5. CHECK FOR ENGINE COOLANT LEAKS (See «ON-VEHICLE INSPECTION»(ref-235453-S02688537602006062200000) )

Scheme 256

Scheme 256
Scheme 256

Scheme 257

Scheme 257: COMPONENTS
Scheme 257: COMPONENTS

Scheme 258

Scheme 258
Scheme 258

Scheme 259

Scheme 259: REMOVAL
Scheme 259: REMOVAL
  1. REMOVE V-BANK COVER (See «REMOVAL»(ref-235451-S13841571552006062200000) )
  2. REMOVE HEATER WATER OUTLET HOSE (See «REMOVAL»(ref-235579-S01894918482006062400000) )
  3. REMOVE HEATER WATER INLET HOSE (See «REMOVAL»(ref-235579-S01894918482006062400000) )
  4. REMOVE WATER BY-PASS GLOW PLUG (See «REMOVAL»(ref-235579-S09195076512006062400000) )
  5. REMOVE WATER HOSE JOINT Remove the 2 bolts. Disconnect the 2 hoses, and remove the water hose joint.
  1. INSTALL WATER HOSE JOINT Connect the 2 hoses, and install the water hose joint with the 2 bolts. Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf)
  2. INSTALL WATER BY-PASS GLOW PLUG (See «INSTALLATION»(ref-235579-S24247358492006062400000) )
  3. INSTALL HEATER WATER INLET HOSE (See «INSTALLATION»(ref-235579-S21480697162006062400000) )
  4. INSTALL HEATER WATER OUTLET HOSE (See «INSTALLATION»(ref-235579-S21480697162006062400000) )
  5. INSTALL V-BANK COVER (See «INSTALLATION»(ref-235451-S29453453712006062200000) )
  6. ADD ENGINE COOLANT (See «COOLANT»(ref-235453-S27628624852006062200000) )
  7. WARM UP ENGINE (See «REPLACEMENT»(ref-235579-S02745364222006062400000) )
  8. CHECK FOR ENGINE COOLANT LEAKS (See «ON-VEHICLE INSPECTION»(ref-235453-S02688537602006062200000) )

Scheme 260

Scheme 260
Scheme 260

Scheme 261

Scheme 261: COMPONENTS
Scheme 261: COMPONENTS

Scheme 262

Scheme 262
Scheme 262

Scheme 263

Scheme 263
Scheme 263

REMOVAL

  1. REMOVE SHIFT LEVER KNOB SUB-ASSEMBLY (for Automatic Transmission) (See «REMOVAL»(ref-235591-S20751754672006062400000) )
  2. REMOVE SHIFT LEVER KNOB SUB-ASSEMBLY (for Manual Transmission) (See «REMOVAL»(ref-235591-S20751754672006062400000) )
  3. REMOVE UPPER NO. 1 CONSOLE PANEL GARNISH (for Automatic Transmission) (See «REMOVAL»(ref-235591-S20751754672006062400000) )
  4. REMOVE UPPER NO. 2 CONSOLE PANEL GARNISH (for Automatic Transmission) (See «REMOVAL»(ref-235591-S20751754672006062400000) )
  5. REMOVE CONSOLE PANEL SUB-ASSEMBLY (for Automatic Transmission) (See «REMOVAL»(ref-235591-S20751754672006062400000) )
  6. REMOVE REAR CONSOLE PANEL SUB-ASSEMBLY (for Manual Transmission) (See «REMOVAL»(ref-235591-S20751754672006062400000) )
  7. REMOVE FRONT CONSOLE PANEL SUB-ASSEMBLY (for Manual Transmission) (See «REMOVAL»(ref-235591-S20751754672006062400000) )
  8. REMOVE FRONT ASH RECEPTACLE SUBASSEMBLY (See «REMOVAL»(ref-235591-S20751754672006062400000) )
  9. REMOVE CONSOLE BOX REGISTER ASSEMBLY (See «REMOVAL»(ref-235591-S20751754672006062400000) )
  10. REMOVE CONSOLE BOX (See «REMOVAL»(ref-235591-S20751754672006062400000) )
  11. REMOVE NO. 3 INSTRUMENT PANEL REGISTER ASSEMBLY (See «REMOVAL»(ref-235591-S20751754672006062400000) )
  12. REMOVE CENTER LOWER INSTRUMENT CLUSTER FINISH PANEL (See «REMOVAL»(ref-235591-S20751754672006062400000) )
  13. REMOVE INTEGRATION CONTROL PANEL WITH RADIO RECEIVER ASSEMBLY (See «REMOVAL»(ref-235589-S20177326342006062400000) )
  14. REMOVE TIRE PRESSURE MONITOR RECEIVER ASSEMBLY (See «REMOVAL»(ref-235571-S30312418382006062400000) )
  15. REMOVE NO. 1 RADIO BRACKET (See «REMOVAL»(ref-235589-S20177326342006062400000) )
  16. REMOVE NO. 2 RADIO BRACKET (See «REMOVAL»(ref-235589-S20177326342006062400000) )
  17. REMOVE RADIO RECEIVER ASSEMBLY (See «REMOVAL»(ref-235589-S20177326342006062400000) )

Scheme 264

Scheme 264: DISASSEMBLY
Scheme 264: DISASSEMBLY

Scheme 265

Scheme 265
Scheme 265

Scheme 266

Scheme 266
Scheme 266
  1. REMOVE CENTER INSTRUMENT CLUSTER FINISH PANEL Remove the 6 screws. Disengage the 5 claws, and remove the center instrument cluster finish panel.
  2. REMOVE NO. 1 CONTROL KNOB SUB-ASSEMBLY Disengage the 16 claws, and remove the No. 1 control knob sub-assembly.

Scheme 267

Scheme 267: REASSEMBLY
Scheme 267: REASSEMBLY

Scheme 268

Scheme 268
Scheme 268

Scheme 269

Scheme 269
Scheme 269
  1. INSTALL NO. 1 CONTROL KNOB SUB-ASSEMBLY Engage the 16 claws, and install the No. 1 control knob sub-assembly.
  2. INSTALL INSTRUMENT CLUSTER FINISH PANEL CENTER Engage the 5 claws. Install the integration control panel with 6 screws.
  1. INSTALL RADIO RECEIVER ASSEMBLY (See «INSTALLATION»(ref-235589-S18433754322006062400000) )
  2. INSTALL NO. 2 RADIO BRACKET (See «INSTALLATION»(ref-235589-S18433754322006062400000) )
  3. INSTALL NO. 1 RADIO BRACKET (See «INSTALLATION»(ref-235589-S18433754322006062400000) )
  4. REMOVE TIRE PRESSURE MONITOR RECEIVER ASSEMBLY (See «REMOVAL»(ref-235571-S30312418382006062400000) )
  5. INSTALL INTEGRATION CONTROL PANEL WITH RADIO RECEIVER ASSEMBLY (See «INSTALLATION»(ref-235589-S18433754322006062400000) )
  6. INSTALL CENTER LOWER INSTRUMENT CLUSTER FINISH PANEL (See «INSTALLATION»(ref-235591-S32740741772006062400000) )
  7. INSTALL NO. 3 INSTRUMENT PANEL REGISTER ASSEMBLY (See «INSTALLATION»(ref-235591-S32740741772006062400000) )
  8. INSTALL CONSOLE BOX (See «INSTALLATION»(ref-235591-S32740741772006062400000) )
  9. INSTALL CONSOLE BOX REGISTER ASSEMBLY (See «INSTALLATION»(ref-235591-S32740741772006062400000) )
  10. INSTALL FRONT ASH RECEPTACLE SUBASSEMBLY (See «INSTALLATION»(ref-235591-S32740741772006062400000) )
  11. INSTALL FRONT CONSOLE PANEL SUB-ASSEMBLY (for Manual Transmission) (See «INSTALLATION»(ref-235591-S32740741772006062400000) )
  12. INSTALL REAR CONSOLE PANEL SUB-ASSEMBLY (for Manual Transmission) (See «INSTALLATION»(ref-235591-S32740741772006062400000) )
  13. INSTALL CONSOLE PANEL SUB-ASSEMBLY (for Automatic Transmission) (See «INSTALLATION»(ref-235591-S32740741772006062400000) )
  14. INSTALL UPPER NO. 2 CONSOLE PANEL GARNISH (for Automatic Transmission) (See «INSTALLATION»(ref-235591-S32740741772006062400000) )
  15. INSTALL UPPER NO. 1 CONSOLE PANEL GARNISH (for Automatic Transmission) (See «INSTALLATION»(ref-235591-S32740741772006062400000) )
  16. INSTALL SHIFT LEVER KNOB SUB-ASSEMBLY (for Manual Transmission)
  17. INSTALL SHIFT LEVER KNOB SUB-ASSEMBLY (for Automatic Transmission)

Scheme 270

Scheme 270: COMPONENTS
Scheme 270: COMPONENTS

Scheme 271

Scheme 271: REMOVAL
Scheme 271: REMOVAL
  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait for 90 seconds after disconnecting the cable to prevent airbag deployment (See «PRECAUTION»(ref-235542-S10058841152006062400000) ).
  2. REMOVE FRONT DOOR SCUFF PLATE RH (w/o Illumination)
  3. REMOVE FRONT DOOR SCUFF PLATE RH (w/ Illumination)
  4. REMOVE FRONT DOOR OPENING TRIM COVER RH (See «REMOVAL»(ref-235591-S20751754672006062400000) )
  5. REMOVE SIDE INSTRUMENT PANEL RH (See «REMOVAL»(ref-235591-S20751754672006062400000) )
  6. REMOVE NO. 2 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY (See «REMOVAL»(ref-235591-S20751754672006062400000) )
  7. REMOVE FRONT PASSENGER SIDE KNEE AIRBAG ASSEMBLY (See «REMOVAL»(ref-235542-S26525252422006062400000) )
  8. REMOVE GLOVE COMPARTMENT DOOR ASSEMBLY (See «REMOVAL»(ref-235591-S20751754672006062400000) )
  9. REMOVE NO. 2 AIR DUCT (See «REMOVAL»(ref-235579-S01894918482006062400000) )
  10. REMOVE AIR CONDITIONING AMPLIFIER ASSEMBLY Disconnect the connector. Remove the screw and air conditioning amplifier assembly.

Scheme 272

Scheme 272: INSTALLATION
Scheme 272: INSTALLATION

Scheme 273

Scheme 273
Scheme 273
  1. INSTALL AIR CONDITIONING AMPLIFIER ASSEMBLY Install the air conditioning amplifier with the screw and connect the connector.
  2. INSTALL NO.2 AIR DUCT Install the No. 2 air duct and screw. Torque: 5.4 N*m (55 kgf*cm, 48 in.*lbf)
  3. INSTALL GLOVE COMPARTMENT DOOR ASSEMBLY (See «INSTALLATION»(ref-235591-S32740741772006062400000) )
  4. INSTALL FRONT PASSENGER SIDE KNEE AIRBAG ASSEMBLY (See «INSTALLATION»(ref-235542-S26749810932006062400000) )
  5. INSTALL NO. 2 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY (See «INSTALLATION»(ref-235591-S32740741772006062400000) )
  6. INSTALL SIDE INSTRUMENT PANEL RH (See «INSTALLATION»(ref-235591-S32740741772006062400000) )
  7. INSTALL FRONT DOOR OPENING TRIM COVER RH (See «INSTALLATION»(ref-235591-S32740741772006062400000) )
  8. INSTALL FRONT DOOR SCUFF PLATE RH (w/o Illumination)
  9. REMOVE FRONT DOOR SCUFF PLATE RH (w/ Illumination)
  10. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL
  11. PERFORM INITIALIZATION NOTE: Some systems need initialization after reconnecting the cable to the negative battery terminal (See «INITIALIZATION»(ref-235541-S32349848442006062400000) )
  12. INSPECT SRS WARNING LIGHT (See «DIAGNOSIS SYSTEM»(ref-235542-S25406180262006062400000) )

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