Published: 12-May-2014
General Information - Diagnostic Trouble Code (DTC) Index DTC: Climate
Control Module (HVAC)
Description and Operation
Climate Control Module
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.
NOTES:
If a control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the Warranty
Policy and Procedures manual, or determine if any prior approval programme is in operation, prior to the installation of a new
module/component.
Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to
the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the
manufacturer-approved diagnostic system).
When performing voltage or resistance tests, always use a digital multimeter accurate to three decimal places, and with
an up-to-date calibration certificate. When testing resistance always take the resistance of the digital multimeter leads into
account.
Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
Inspect connectors for signs of water ingress, and pins for damage and/or corrosion.
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.
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.
The table below lists all Diagnostic Trouble Codes (DTCs) that could be logged in the Climate Control Module. For additional
diagnosis and testing information, refer to the relevant Diagnosis and Testing section in the workshop manual.
For additional information, refer to: Climate Control System (412-00 Climate Control System - General Information, Diagnosis and Testing).
DTC Description Possible Causes Action B105A-01
Cabin Temperature
Sensor Fan -
General electrical
failure
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 B1081-00
Left Temperature
Damper Motor -
No sub type
information
Left hand blend stepper
motor internal or
external fault
Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system B1081-49
Left Temperature
Damper Motor -
Internal electronic
failure
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 B1082-00
Right Temperature
Damper Motor -
No sub type
information
Right hand blend
stepper motor internal
or external fault
Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system
