Climate Control Module
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/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 program is in operation, prior to the installation of a new module/component.
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 that involve pinpoint tests.
NOTE:
Inspect connectors for signs of water ingress, and pins for damage and/or corrosion.
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 |
|---|---|---|---|
| B2413 | Humidity Sensor Fault | Climate control module humidity 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 electrical circuit diagrams, notes and check humidity sensor signal circuit for short to power or open circuit |
| B2477 | odule Configuration Failure | Climate control module - configuration failure | The module can be configured using the new module configuration procedure |
| B2513 | Blower Fault | Climate control module blower motor drive signal circuit - short to ground or open | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check blower circuit for short to ground or open |
| B2514 | Blower Fault | Climate control module blower fault - short circuit to power | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check blower power circuit for short to power |
| B2585 | Smog Sensor Fault | Climate control module, smog sensor - hydrocarbon signal circuit short to ground | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check smog sensor circuit for short to ground |
| B2826 | Evaporator Temperature Sensor Fault | Climate control module, evaporator temperature sensor circuit - short to power or open | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check evaporator temperature sensor circuit for short to power or open |
| B2827 | Evaporator Temperature Sensor Fault | Climate control module, evaporator temperature sensor circuit - short to ground | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check evaporator temperature sensor circuit for short to ground |
| B2832 | Mode Servo Fault | Climate control module, mode servo circuit - short to ground, power or open | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check mode servo's and circuit for short to ground, power or open |
| B2833 | Sensor Supply Fault | Climate control module, servo circuit sensor supply - short to ground, power or open | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check sensor supply circuit for short to ground, power or open |
| B2834 | RH or LH Air Mix Servo Fault | Climate control module, air mix servo circuit - short to ground, power or open | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check air mix servo's and circuit for short to ground, power or open |
| B2835 | RH /LH Outlet Air Temp Sensor Fault | Climate control module, outlet air temp sensor circuit - short to ground, power or open | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check outlet air temp sensor circuit for short to ground, power or open |
| B2836 | In car Temperature Sensor Fault | Climate control module, in car temperature sensor circuit - short to power or open | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check in car temperature sensor for short to power or open circuit |
| B2837 | In car Temperature Sensor Fault | Climate control module, in car temperature sensor circuit - short to ground | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check in car temperature sensor circuit for short to ground |
| B2840 | Ambient Air Temperature Sensor Fault | Climate control module, ambient air temperature sensor circuit - short to power or open | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check ambient air temperature sensor circuit for short to power or open |
| B2841 | Ambient Air Temperature Sensor Fault | Climate control module, ambient air temperature sensor circuit - short to ground | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check ambient air temperature sensor circuit for short to ground |
| B2842 | LH or RH Cool Air Bypass Servo Fault | Climate control module, cool air bypass servo circuit - short to ground, power or open | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check cool air bypass servo circuit for short to ground, power or open |
| B2843 | Air Intake Servo Fault | Climate control module, air intake servo circuit - short to ground, power or open | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check air intake servo and circuit for short to ground, power or open |
| B2844 | Ignition Fault | Climate control module, ignition signal circuit - short to ground or open | Refer to electrical circuit diagrams, notes and check ignition signal circuit for short to ground or open |
| B2846 | Dual Solar Sensor Fault | Climate control module, dual solar sensor circuit - short to ground, power or open | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check dual solar sensor circuit for short to ground, power or open |
| C2781 | Air Conditioning Compressor Solenoid | Climate control module, air conditioning compressor solenoid circuit - short to ground, power or open | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check air conditioning compressor solenoid circuit for short to ground, power or open |
| U2022 | Climate Control Panel | Climate control module to climate control panel - communication error (non nav only) | Refer to electrical circuit diagrams, notes and check climate control module communication circuit for fault |
| U2516 | CAN Bus Off | Climate control module, CAN Bus - circuit fault No CAN messages received during ignition on/missing messages from other ecus | Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check CAN Bus circuit for short to ground, power or open |
| U2520 | CAN Node Missing | Climate control module - CAN Node missing | Check other modules for stored DTCs. Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check CAN Bus circuit to instrument cluster for short to ground, power or open |
| U2521 | CAN Node Missing | Climate control module - CAN Node missing | Check other modules for stored DTCs. Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check CAN Bus circuit to dynamic stability control module for short to ground, power or open |
| U2523 | CAN Node Missing | Climate control module - CAN Node missing | Check other modules for stored DTCs. Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams, notes and check CAN Bus circuit to engine control module for short to ground, power or open |
| U2525 | CAN Node Missing | Rear climate control module - CAN Node missing 4 zone configurations only | Check other modules for stored DTCs. Carry out any pinpoint tests associated with this DTC using the manufacturer approved diagnostic system. Refer to electrical circuit diagrams and check CAN bus circuit to rear climate control module for short to ground, power or open |