HOW TO REMOVE FRONT AIR CONDITIONING UNIT

HVAC Air Conditioning System

(Service Information)

REMOVAL:

1. 1. REMOVE FRONT FENDER SPLASH SHIELD SUB-ASSEMBLY LH .
   2.  REMOVE FRONT FENDER SPLASH SHIELD SUB-ASSEMBLY RH .
   3.  REMOVE NO. 1 ENGINE UNDER COVER SUB-ASSEMBLY .
   4. REMOVE UPPER RADIATOR SUPPORT SEAL .
   5. RECOVER REFRIGERANT FROM REFRIGERATION SYSTEM.
   6. DRAIN ENGINE COOLANT .
   7. PRECAUTION.

          NOTE: After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work.

      8. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL.

WARNING:Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

NOTE:When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

     9. DISCONNECT AIR CONDITIONING TUBE ASSEMBLY.

• Remove the bolt.
• Detach the plate as shown in the illustration.
• Disconnect the air conditioning tube assembly.

NOTE:Do not use a screwdriver or similar tool to disconnect the tube. Seal the openings of the disconnected parts using vinyl tape to prevent moisture and foreign matter from entering them.

• Remove 2 O-rings from the air conditioning tube assembly.

    10. DISCONNECT INLET HEATER WATER HOSE AND OUTLET HEATER WATER HOSE.

• Using pliers, grip the claws of the clips and slide the 2 clips.
• Disconnect the 2 heater water hoses.

    11. REMOVE FRONT WIPER MOTOR AND BRACKET.

• Remove the front wiper motor and bracket.

    12. REMOVE INSTRUMENT PANEL SUB-ASSEMBLY.

• Remove the instrument panel.

     13. REMOVE NO. 3 AIR DUCT SUB-ASSEMBLY.

• Remove the clip.
• Detach the 2 claws and remove the duct.

     14. REMOVE STEERING COLUMN ASSEMBLY.

• Remove the steering column.

     15. REMOVE HEATER TO REGISTER DUCT ASSEMBLY.

• Remove the 3 clips.
• Detach the 2 claws and remove the duct.

     16. REMOVE INSTRUMENT PANEL REINFORCEMENT ASSEMBLY.

• Disconnect the clamps, connectors and wire harness.
• Remove the instrument panel reinforcement.
  • for Driver Side:
    • Remove the 3 caps and 3 bolts.
  • for Passenger:
    • Remove the 2 caps.
  • for Passenger Side:
    • Using a T40 "TORX" socket, remove the 2 "TORX" bolts.
  • for Passenger:
    • Using a 12 mm hexagon wrench, remove the 2 collars.
  • Remove the 7 bolts, screw and instrument panel reinforcement.

    17.REMOVE AIR CONDITIONING HOSE AND ACCESSORY (w/ Cool Box)

• Remove the bolt.
• Using SST, remove the piping clamp.
  • SST: 09870-00025
    • Attach SST to the piping clamp.
    • Push down SST and release the clamp lock.
    • Pull SST slightly and push the release lever, then remove the piping clamp with SST.
    • Remove the piping clamp from SST.

HINT: Confirm the direction of the piping clamp claw and SST by referring to the illustration on the caution label.

• Disconnect the hose and accessory from the liquid tube to remove it.

NOTE: Cap the open fittings immediately to keep moisture or dirt out of the system.

• Remove the 2 O-rings from the air conditioner hose and accessory.

    18. REMOVE AIR CONDITIONING UNIT.

• remove the 2 nuts and air conditioning unit.

DTC INDEX

2014 Toyota Land Cruiser

DTC INDEX

DTC Code & Description
C1203 ECM Communication Circuit Malfunction
C120A ECU Initial Setting Incomplete
C1210 Zero Point Calibration of Yaw Rate Sensor Undone
C1225 SM Solenoid Circuit
C1226 SA2 Solenoid Circuit
C1227 SA3 Solenoid Circuit
C1228 STR Solenoid Circuit
C1232 Acceleration Sensor Stuck Malfunction
C1241 Low Power Supply Voltage Malfunction
C1242 Open Circuit in IG1/IG2 Power Source Circuit
C1243 Acceleration Sensor Stuck Malfunction
C1245 Acceleration Sensor Output Malfunction
C1251 Open in Pump Motor Circuit
C1252 Brake Booster Pump Motor on Time Abnormally Long
C1253 Pump Motor Relay
C1254 Pressure Sensor or Switch
C1256 Accumulator Low Pressure
C1257 Power Supply Drive Circuit
C1268 Transfer L4 Position Switch Circuit
C1289 VGRS Control System Malfunction
C1290 Steering Angle Sensor Zero Point Malfunction
C1336 Zero Point Calibration of Acceleration Sensor Undone
C1337 Diameter of the Tire is not Uniform
C1340 Center Differential Lock Circuit
C1380 Stop Light Control Relay Malfunction
C1381 Acceleration Sensor Power Supply Voltage Malfunction
C1401 Front Speed Sensor RH Malfunction
C1402 Front Speed Sensor LH Malfunction
C1403 Rear Speed Sensor RH Malfunction
C1404 Rear Speed Sensor LH Malfunction
C1405 Open or Short in Front Speed Sensor RH Circuit
C1406 Open or Short in Front Speed Sensor LH Circuit
C1407 Open or Short in Rear Speed Sensor RH Circuit
C1408 Open or Short in Rear Speed Sensor LH Circuit
C1409 Front Speed Sensor RH Performance
C1410 Front Speed Sensor LH Performance
C1411 Rear Speed Sensor RH Performance
C1412 Rear Speed Sensor LH Performance
C1413 Front Speed Sensor RH Output Malfunction
C1414 Front Speed Sensor LH Output Malfunction
C1415 Rear Speed Sensor RH Output Malfunction
C1416 Rear Speed Sensor LH Output Malfunction
C1417 High Power Supply Voltage Malfunction
C1419 Acceleration Sensor Internal Circuit
C1420 Acceleration Sensor Malfunction
C1421 Open or Short in Master Cylinder Pressure Sensor
C1422 Master Cylinder Pressure Sensor Zero Point High Malfunction
C1423 Master Cylinder Pressure Sensor Zero Point Low Malfunction
C1424 Master Cylinder Pressure Sensor Output Malfunction
C1425 Open in Stop Light Switch Circuit
C1432 Steering Angle Sensor Power Source Voltage Malfunction
C1433 Steering Angle Sensor Internal Circuit
C1434 Steering Angle Sensor Output Malfunction
C1435 Yaw Rate Sensor Internal Circuit
C1436 Yaw Rate Sensor Malfunction
C1437 Lost Communication with ECM
C1439 Steering Angle Sensor Initialization Incomplete
C1440 Steering Angle Sensor Unusual Bank Angle Detected
C1442 Invalid Data Received from Acceleration Sensor
C1443 Invalid Data Received from Yaw Rate Sensor
C1445 Vehicle Driven with Steering Angle Sensor not Initialized
C1452 Accumulator Low Pressure
C1453 Reservoir Level Switch Disconnected
C1454 Reservoir Level Low
C1455 Open or Short in Control Pressure Sensor
C1456 Control Pressure Sensor Zero Point High
C1457 Control Pressure Sensor Zero Point Low
C1458 Control Pressure Sensor Zero Point Output
C1468 SFR Solenoid Circuit
C1469 SFL Solenoid Circuit
C146A SRR Solenoid Circuit
C146B SRL Solenoid Circuit
C146E Open in ABS Solenoid Relay Circuit
C146F Short in ABS Solenoid Relay Circuit
U0073 Control Module Communication Bus OFF
U0100 Lost Communication with ECM / PCM
U0114 Lost with 4WD Control ECU
U0123 Lost Communication with Yaw Rate Sensor Module
U0124 Lost Communication with Lateral Acceleration Sensor Module
U0126 Lost Communication with Steering Angle Sensor Module
U0130 Lost Communication with Steering Effort Control Module

VEHICLE STABILITY CONTROL SYSTEM TEST MODE DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
DTC Code & Description
C1271 Low Output Signal of Front Speed Sensor RH (Test Mode DTC)
C1272 Low Output Signal of Front Speed Sensor LH (Test Mode DTC)
C1273 Low Output Signal of Rear Speed Sensor RH (Test Mode DTC)
C1274 Low Output Signal of Rear Speed Sensor LH (Test Mode DTC)
C1275 Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC)
C1276 Abnormal Change in Output Signal of Front Speed Sensor LH (Test Mode DTC)
C1277 Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC)
C1278 Abnormal Change in Output Signal of Rear Speed Sensor LH (Test Mode DTC)
C1279 Acceleration Sensor Output Voltage Malfunction (Test Mode DTC)
C1281 Master Cylinder Pressure Sensor Output Malfunction (Test Mode DTC)
C1282 Center Differential Lock Position Switch
C1379 Downhill Assist Control Switch Malfunction (Test Mode DTC)

DTC P0500: VEHICLE SPEED SENSOR MALFUNCTION

CJ CHANNEL

DTC P0500: VEHICLE SPEED SENSOR MALFUNCTION

DESCRIPTION

• The speed sensor detects the wheel speed and sends the appropriate signals to the master cylinder solenoid (skid control ECU). The master cylinder solenoid (skid control ECU) converts these wheel speed signals into a 4-pulse signal and outputs it to the ECM via the combination meter. The ECM determines the vehicle speed based on the frequency of these pulse signals.

DTC Code: P0500

INSPECTION PROCEDURE

DTC Detection Condition

The vehicle speed signal from the vehicle speed sensor is cut for 0.14 second. or more while cruise control is in operation.

Trouble Area

• Vehicle speed sensor signal circuit 
• Vehicle speed sensor 
• Combination meter 
• ECM 

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P0047 Turbo/Super Charger Boost Control Solenoid Circuit Low

P0047 code definition

Turbo/Super Charger Boost Control Solenoid Circuit Low

What the P0047 code means

This code has varied definitions as provided by the manufacturer. The code means that the Engine Control Unit (ECU) has detected an out of range or abnormal reading of low operation in the turbocharger or supercharger boost control solenoid circuit. This code is related to circuit A as an area of the boost solenoid system circuit, as opposed to a particular malfunction or component.

What causes the P0047 code?

Vacuum leaks on the intake manifold or boost control

A dirty or restrictive air cleaner

The waste gate is either stuck open or closed

A plugged or leaking intercooler

Loose connections or bad gasket between the exhaust manifold and the turbocharger flange

A leaking connection between the turbocharger and the air intake pipe

A bad boost pressure sensor
Shorted or open wiring in the boost sensor circuit

Loose, corroded, or disconnected electrical connectors in the boost sensor 5-volt reference circuit

Turbo charger failure (usually caused by internal oil leaks and oil supply problems which can cause bearing failure and blade damage)

What are some of the symptoms of P0047 code?

Low or no boost and a loss of power during acceleration

Engine idle normal, but acceleration affected

Check Engine Light illumination once ECM has detected solenoid circuit low current condition (indicates open circuit)

How does a mechanic diagnose the P0047 code?

Scanning and verifying the code
Resetting the fault codes and performing a road test.
If the P0047 code returns, the following test procedure is necessary:

Inspecting for vacuum leaks

Inspecting the turbo or super charger system for loose connections, including hoses and lines being cracked or damaged

Checking the wiring on the boost sensor and related wiring for loose connections, damaged wiring, or faulty sensor

Examining the boost pressure during operation and driving for a normal range of 9 to 14 PSI pressure and insuring it is not erratic or too low

Inspecting the turbo charger for damaged blades, wobbly shaft rotation, wornbearings, oil leaks into turbo boost side, and correct control valve or waste gate operation

Common mistakes when diagnosing the P0047 code

Do not replace any component assuming it is bad without carefully inspecting the system. Mechanics have reported that failure to flush all debris and obstructions from the turbocharger oiling system can lead to repeated turbo failure related to the bearings on the turbocharger shaft. Replacing the turbocharger without complete testing of the by-pass valve or waste gate function and electrical circuitry is also the cause of common misdiagnosis.

How serious is the P0047 code?

This code is very serious and is usually preceded by the engine warning light coming on. It should be diagnosed as soon as possible to prevent engine internal damage or turbocharger failure. Minimize your driving until the problem can be repaired.

If the vehicle operates very poorly, do not drive it further. The vehicle can run roughly, backfire, have rich or lean fuel consumption, and operate in over or under boost conditions.

Often times, if the engine warning light comes on immediately at start up, the OBD- II system can be reset and the vehicle will operate normally.

What repairs can fix the P0047 code?

There are many causes for this code that relate to leaks and pressure loss in the system, but usually they related to hose, clamp and connection failures due to improper installation or simply age. Many times, an intake hose to the intercooler, or the intercooler itself, may have a leak, and would require replacement.

You can use a spray carburetor cleaner with a long plastic hose to spray directly at connections and hoses to see if the engine operation changes or improves. Modern vehicles are very complicated, so the using the hose with the carburetor cleaner allows for easy access to check specific areas for leaks. I have found cracked intake hoses to be a problem, usually on the bottom or out of site, that can cause intermittent problems only noted under load.

Additional comments for consideration regarding the P0047 code.

Many vehicles with mileage over 100,000 have momentary sensor problems that usually occur during start up or prolonged stress situations on the drive train.

If the engine warning light comes on and the vehicle seems to be operating normally, the OBD-II system can be reset using the scanner, and the problem may not reoccur. This is why it is important to verify the fault code and reset it before doing any repairs.

How to work CVT

automotive tools

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DTC P1604: STARTABILITY MALFUNCTION

DTC P1604: STARTABILITY MALFUNCTION

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