INSPECTION AND VERIFICATION
| WARNING | Servicing must be carried out by personnel familiar with both vehicle system and the charging and testing equipment. All operations must be carried out in a well ventilated area away from open flame and heat sources. |
| CAUTION | Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor vehicle. |
Note. Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
- Verify the customer concern.
- Visually inspect for obvious signs of damage and system integrity. Visual Inspection Mechanical Electrical Coolant level Hose(s) Coolant pump Control flap(s) Duct(s) Vent(s) Cabin air filter Drive belt Air conditioning compressor Thermostatic expansion valve Evaporator Receiver drier Air conditioning condenser Refrigerant pipes Auxiliary drive belt Fuel fired booster heater Fuel fired booster heater fuel pump Fuel fired booster heater fuel pipes Fuse(s) Wiring harness Electrical connectors Blower Air conditioning compressor Electric cooling fan Automatic Temperature Control Module (ATCM) Refrigerant pressure sensor
- If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
- If the cause is not visually evident, check for Diagnostic Trouble Codes (DTCs) and refer to the DTC Index.
- Check DDW for open campaigns. Refer to the corresponding bulletins and SSMs which may be valid for the specific customer complaint and carry out the recommendations as required
SYMPTOM CHART
| Symptom | Possible Causes | Action |
|---|---|---|
| Air conditioning performance poor or inoperative | Refrigerant undercharged Refrigerant overcharged Thermostatic expansion valve faulty Receiver drier restricted Water in refrigerant | GO to Pinpoint Test A . |
| Air conditioning operates briefly and then switches off | Electric cooling fan inoperative Air conditioning condenser airflow obstructed | Test the operation of the electric cooling fan Check the air conditioning condenser for external obstructions |
PINPOINT TEST A: PRELIMINARY TESTS
Pinpoint Test A
A1
PRELIMINARY TEST 1
- Close the valves on the air conditioning station
- Connect the air conditioning station to the vehicle charging ports
- Record the pressure values
PINPOINT TEST B: FUNCTIONALITY TESTS
Pinpoint Test B
B1
FUNCTIONALITY TEST 1
- Close the valves on the air conditioning station
- Connect the air conditioning station to the vehicle charging ports
- Open all doors and the tailgate
- Start the engine
- Set the temperature to the lowest setting (all zones)
- Set the fan speed to maximum
- Set the recirculate switch to off
- Insert a temperature probe into the center air vent
- Raise engine speed to 1500rpm and maintain this speed for 5 minutes
- Record the temperature value
- Record the pressure values
PINPOINT TEST C: GAUGE TESTS
Pinpoint Test C
C1
GAUGE TEST 1
- Record the pressure values
C2
GAUGE TEST 2
- Record the pressure values
C3
GAUGE TEST 3
- Record the pressure values
C4
GAUGE TEST 4
- Using the manufacturer approved refrigerant leak detector, check for a refrigerant leak
C5
GAUGE TEST 5
- Refer to the relevant section of the service information and recover the refrigerant
C6
GAUGE TEST 6
- Record the pressure values
C7
GAUGE TEST 7
- Refer to the relevant section of the service information and recover the refrigerant
PINPOINT TEST D : NITROGEN LEAK TESTS
Pinpoint Test D
D1
NITROGEN LEAK TEST
- Charge the air conditioning system with nitrogen
- Isolate the nitrogen supply
- Monitor the pressure gauge and check for leaks
DTC INDEX
| CAUTION | When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part number 3548-1358-00 |
Note. If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the Warranty Policy and Procedures manual (section B1.2), or determine if any prior approval programme is in operation, prior to the installation of a new module/component.
Note. Generic scan tools may not read the codes listed, or may read only five digit codes. Match the five digits from the scan tool to the first five digits of the seven digit code listed to identify the fault (the last two digits give extra information read by the manufacturer-approved diagnostic system).
Note. When performing voltage or resistance tests, always use a digital multimeter (DMM) accurate to three decimal places and with a current calibration certificate. When testing resistance, always take the resistance of the DMM leads into account.
Note. Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
Note. If DTCs are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent concern may be the cause. Always check for loose connections and corroded terminals.
| DTC | Description | Possible Cause | Action |
|---|---|---|---|
| B105A01 | Cabin Temperature Sensor Fan | Aspirator motor diagnostic circuit - short to ground, open circuit Aspirator fan component failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check aspirator motor diagnostic circuit for short to ground, open circuit |
| B108100 | Left Temperature Damper Motor | Left hand blend stepper motor internal or external fault | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system |
| B108149 | Left Temperature Damper Motor | Left hand blend stepper motor internal electronic failure | Suspect the left hand blend stepper motor. Check and install a new stepper motor as required, refer to the new module/component installation note at the top of the DTC Index |
| B108200 | Right Temperature Damper Motor | Right hand blend stepper motor internal or external fault | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system |
| B108249 | Right Temperature Damper Motor | Right hand blend stepper motor internal electronic failure | Suspect the right hand blend stepper motor. Check and install a new stepper motor as required, refer to the new module/component installation note at the top of the DTC Index |
| B108301 | Recirculation Damper Motor | RECIRC servo motor circuits - short to ground, power, open circuit | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check RECIRC servo motor circuit for short to ground, power, open circuit |
| B108500 | Defroster Damper Motor | Defrost stepper motor internal or external fault | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system |
| B108549 | Defroster Damper Motor | Defrost stepper motor internal electronic failure | Suspect the defrost stepper motor. Check and install a new stepper motor as required, refer to the new module/component installation note at the top of the DTC Index |
| B108600 | Air Distribution Damper Motor | Panel/foot stepper motor internal or external fault | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system |
| B108649 | Air Distribution Damper Motor | Panel/foot stepper motor internal electronic failure | Suspect the panel/foot stepper motor. Check and install a new stepper motor as required, refer to the new module/component installation note at the top of the DTC Index |
| B108788 | LIN Bus "A" | LIN Bus power #1 circuit - open circuit | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check LIN Bus power #1 circuit for open circuit |
| B108888 | LIN Bus "B" | LIN Bus power #2 circuit - open circuit | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check LIN Bus power #2 circuit for open circuit |
| B11ED68 | Electric Heater Control Module | Event information. Electric heater - invalid communication message | Clear DTC. With engine coolant temperature low, set climate temperature to high and re-test. If DTC remains in isolation suspect the PTC heater, check and install a new heater as required, refer to the new module/component installation note at the top of the DTC Index. If additional LIN related DTCs are logged refer to the Actions for these DTCs |
| B11ED87 | Electric Heater Control Module | Electric heater - missing communication message | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system |
| B11ED96 | Electric Heater Control Module | Component internal failure | Suspect the PTC heater, check and install a new heater as required, refer to the new module/component installation note at the top of the DTC Index |
| B11ED98 | Electric Heater Control Module | Component or system over temperature | Clear DTC. With engine coolant temperature low, set climate temperature to high and re-test. If DTC remains suspect the PTC heater, check and install a new heater as required, refer to the new module/component installation note at the top of the DTC Index |
| B11EE01 | A/C Compressor | Air conditioning compressor clutch solenoid circuits - short to ground, power, open circuit | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check air conditioning compressor clutch solenoid circuits for short to ground, power, open circuit |
| B11F011 | Air Intake Damper Position Sensor | RECIRC servo motor air intake feedback and 5 volt supply circuits - short to ground | Refer to the electrical circuit diagrams and check RECIRC servo motor air intake feedback and 5 volt supply circuits for short to ground |
| B11F015 | Air Intake Damper Position Sensor | RECIRC servo motor air intake feedback and ground circuits - short to power, open circuit | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check RECIRC servo motor air intake feedback and ground circuits for short to power, open circuit |
| B11F800 | Left Outer Vent | Left outer IP vent actuator internal or external fault | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. |
| B11F849 | Left Outer Vent | Left outer IP vent actuator internal electronic failure | Suspect the left outer IP vent actuator. Check and install a new actuator as required, refer to the new module/component installation note at the top of the DTC Index |
| B11F900 | Left Inner Vent | Left inner IP vent actuator internal or external fault | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. |
| B11F949 | Left Inner Vent | Left inner IP vent actuator internal electronic failure | Suspect the left inner IP vent actuator. Check and install a new actuator as required, refer to the new module/component installation note at the top of the DTC Index |
| B11FA00 | Right Inner Vent | Right inner IP vent actuator internal or external fault | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. |
| B11FA49 | Right Inner Vent | Right inner IP vent actuator internal electronic failure | Suspect the right inner IP vent actuator. Check and install a new actuator as required, refer to the new module/component installation note at the top of the DTC Index |
| B11FB00 | Right Outer Vent | Right outer IP vent actuator internal or external fault | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. |
| B11FB49 | Right Outer Vent | Right outer IP vent actuator internal electronic failure | Suspect the right outer IP vent actuator. Check and install a new actuator as required, refer to the new module/component installation note at the top of the DTC Index |
| B11FF84 | A/C Refrigerant Pressure | Signal below allowable range. A/C System Refrigerant Pressure too low | This DTC can be logged by the system due to low ambient temperature soak (below 3°C) reducing the pressure in the refrigerant gas system. If the cabin temperature logged along with the DTC at the time is below 10°C this could indicate low temperature. If the air conditioning performance is satisfactory and the in-cabin temperature is below 10°C then it is likely that the system contains a suitable amount of gas and the DTC is being recorded as an effect of the low ambient temperature. If this is not the case carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check air conditioning pressure sensor circuits for short, open circuit. Check for correct charge weight |
| B11FF85 | A/C Refrigerant Pressure | Signal above allowable range. A/C System Refrigerant pressure too high | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check air conditioning pressure sensor circuits for short, open circuit |
| B1A5911 | Sensor 5 Volt Supply | Air conditioning pressure sensor or RECIRC servo motor 5 volt supply circuits - short to ground | Refer to the electrical circuit diagrams and check air conditioning pressure sensor and RECIRC servo motor 5 volt supply circuits for short to ground |
| B1A5913 | Sensor 5 Volt Supply | Air conditioning pressure sensor 5 volt supply circuits - open circuit | Refer to the electrical circuit diagrams and check air conditioning pressure sensor 5 volt supply circuit for open circuit |
| B1A6011 | Pollution Sensor - Hydrocarbon | Pollution sensor hydrocarbon input circuit - short to ground | Refer to the electrical circuit diagrams and check pollution sensor hydrocarbon input circuit for short to ground |
| B1A6111 | Cabin Temperature Sensor | In car temperature sensor circuit - short to ground | Refer to the electrical circuit diagrams and check In car temperature sensor circuit for short to ground |
| B1A6115 | Cabin Temperature Sensor | In car temperature sensor circuit - short to power, open circuit | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check In car temperature sensor circuit for short to power, open circuit |
| B1A6311 | Right Solar Sensor | Right sun load sensor signal circuit - short to ground | Refer to the electrical circuit diagrams and check right sun load sensor signal circuit for short to ground |
| B1A6411 | Left Solar Sensor | Left sun load sensor signal circuit - short to ground | Refer to the electrical circuit diagrams and check left sun load sensor signal circuit for short to ground |
| B1A6713 | Sensor Ground | Sensor ground circuits - open circuit | Refer to the electrical circuit diagrams and check sensor ground circuits for open circuit |
| B1A6901 | Humidity Sensor | Humidity sensor PWM input circuit - short to ground, power, open circuit Sensor component failure | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check humidity sensor PWM input circuit for short to ground, power, open circuit. Check and install a new sensor as required |
| B1B6211 | Pollution Sensor - NOx | Pollution sensor NOx input circuit - short to ground | Refer to the electrical circuit diagrams and check pollution sensor NOx input circuit for short to ground |
| B1B7111 | Evaporator Temperature Sensor | Evaporator temperature sensor signal circuit - short to ground | Refer to the electrical circuit diagrams and check evaporator temperature sensor signal circuit for short to ground |
| B1B7115 | Evaporator Temperature Sensor | Evaporator temperature sensor signal circuit - short to power, open circuit | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check evaporator temperature sensor signal circuit for short to power, open circuit |
| B1B7211 | LIN Bus #1 Power Supply Circuit | Stepper motor circuit LIN Bus #1 power supply - short to ground | Refer to the electrical circuit diagrams and check stepper motor circuit LIN Bus #1 power supply for short to ground |
| C1B1413 | Sensor Supply Voltage A | RECIRC servo motor 5 volt supply circuit - open circuit | Refer to the electrical circuit diagrams and check RECIRC servo motor 5 volt supply circuit for open circuit |
| C1B1513 | Sensor Supply Voltage B | RECIRC servo motor and EVAP sensor ground circuits - open circuit | Refer to the electrical circuit diagrams and check RECIRC servo motor and EVAP sensor ground circuits for open circuit |
| P053011 | A/C Refrigerant Pressure Sensor A Circuit | Air conditioning pressure sensor signal circuit - short to ground | Refer to the electrical circuit diagrams and check air conditioning pressure sensor signal circuit for short to ground |
| P053015 | A/C Refrigerant Pressure Sensor A Circuit | Air conditioning pressure sensor signal circuit - short to power, open circuit | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to the electrical circuit diagrams and check air conditioning pressure sensor signal circuit for short to power, open circuit |
| U001088 | Medium Speed CAN Communication Bus | Bus off | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. |
| U030000 | Internal Control Module Software Incompatibility | Invalid configuration message is received | Re-configure the RJB using the manufacturer approved diagnostic system. Clear the DTC and retest. If the DTC is still logged suspect the climate control module, refer to the new module/component installation note at the top of the DTC Index |
| U1A1449 | CAN Initialization Failure | Internal electronic failure | Suspect the climate control module, check and install a new module as required, refer to the new module/component installation note at the top of the DTC Index |
| U300055 | Control Module | Incorrect car configuration data received | Re-configure the RJB using the manufacturer approved diagnostic system. Clear DTC and re-test. If the DTC remains suspect the climate control module. Check and install a new module as required, refer to the new module/component installation note at the top of the DTC Index |
| U300087 | Control Module | Missing message | Re-configure the RJB using the manufacturer approved diagnostic system. Check climate control module for DTCs and refer to the DTC Index. Carry out CAN network integrity tests using the manufacturer approved diagnostic system. If DTC remains suspect the climate control module. Check and install a new module as required, refer to the new module/component installation note at the top of the DTC Index |
| U300281 | Vehicle Identification Number | Vehicle/component mis-match. Corrupt VIN data being transmitted, module previously installed to other vehicle | Check and install original/new module as required, refer to the new module/component installation note at the top of the DTC Index |
Scheme 1
- Refrigerant recovery.
- Remove the dust covers from the high and low pressure connections.
- Connect the high and low pressure lines to the appropriate connections.
- Open the valves on the connections.
- Turn the valves on the station to the correct positions.
- Turn the process switch to the correct position.
- Turn the main switch to 'ON'.
- Allow the system to recover the refrigerant from the system.
- Close the valves on the refrigerant station.
- Turn the main switch 'OFF'.
- Close the valves on the connections.
- Disconnect the high and low pressure connections.
- Install the dust covers to the connectors.
- Open the tap at the rear of the station to drain the refrigerant oil.
- Measure and record the quantity of refrigerant oil recovered from the system.
- Close the tap at the rear of the station.
- Evacuation.
- Remove the dust covers from the high and low pressure connections.
- Connect the high and low pressure lines to the appropriate connections.
- Open the valves on the connections.
- Turn the valves on the station to the correct positions.
- Turn the process switch to the correct position.
- Turn the main switch to 'ON'.
- Allow the station to evacuate the A/C system.
- Recharging
- Close the valves on the refrigerant station.
- Close the valve on the oil charger.
- Disconnect the yellow line from the refrigerant station.
- Remove the cover from the oil charger.
- Pour the correct quantity of refrigerant oil into the oil charger.
- Install the cover to the oil charger.
- Connect the yellow line to the refrigerant station.
- Open the valve on the oil charger.
- Move the pointer on the refrigerant gauge to mark the position of the refrigerant drop.
- Slowly open the correct valve on the refrigerant to allow the vacuum to pull the refrigerant into the system.
- Close the valve on the refrigerant station when the correct amount of refrigerant has been drawn into the air conditioning system.
- Turn the main switch 'OFF'.
- Close the valves on the connections.
- Disconnect the high and low pressure connections.
INSPECTION AND ASSEMBLY REQUIREMENTS
- Check for leaks using ultraviolet (UV) Lamp. Refer to: «Fluorescent Dye Leak Detection»(ref-568393-S22432786662013072200000) information.
- O-ring seal surfaces must be free of dirt, lint, burrs and scratches. The O-ring and connector should be lubricated with air conditioning compressor oil. For additional information, refer to: «Specifications»(ref-568393-S39318460722013072200000) information.