Pinpoint Test T: B14AE:11, B14AE:12, B14AE:13
- Refer to Wiring Diagrams MANUAL CLIMATE CONTROL SYSTEM
for schematic and connector information.
Normal Operation and Fault Conditions
Voltage is supplied to the climate control actuators from the HVAC control module on three power circuits.
DTC Fault Trigger Conditions
DTC Description Fault Trigger Condition HVAC B14AE:11 Actuators Power Supply: Circuit Short To Ground This DTC sets when the module senses less than 10 volts on the actuator voltage supply circuits, indicating a short to ground. HVAC B14AE:12 Actuators Power Supply: Circuit Short To Battery This DTC sets when the module senses greater than 10 volts on the actuator voltage supply circuits, indicating a short to voltage. HVAC B14AE:13 Actuators Power Supply: Circuit Open This DTC sets when the module senses no current flow on the actuator voltage supply circuits, indicating an open. Possible Sources
- Wiring, terminals or connectors
- HVAC control module
- NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
- T1 CHECK THE ACTUATORS COMMON IGNITION SUPPLY CIRCUITS FOR A SHORT TO GROUND
- Ignition OFF.
- Disconnect HVAC control module C228A.
- Disconnect Temperature door actuator C2093.
- Disconnect Air distribution door actuator C2448.
- Disconnect Air inlet door actuator C289.
- Measure:
Positive Lead Measurement / Action Negative Lead C228A-1 Ground C228A-2 Ground C228A-15 Ground
Is the resistance greater than 10, 000 ohms?
Yes GO to T2 No REPAIR the circuit. - T2 CHECK THE ACTUATORS COMMON IGNITION SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE
- Ignition ON.
- Measure:
Positive Lead Measurement / Action Negative Lead C228A-1 Ground C228A-2 Ground C228A-15 Ground
Is any voltage present?
Yes REPAIR the circuit. No GO to T3 - T3 CHECK THE ACTUATORS COMMON IGNITION SUPPLY CIRCUIT FOR AN OPEN
- Ignition OFF.
- Measure:
Temperature door actuator
Positive Lead Measurement / Action Negative Lead C228A-1 C2093-2 Air distribution door actuator
Positive Lead Measurement / Action Negative Lead C228A-2 C2448-2 Air inlet door actuator
Positive Lead Measurement / Action Negative Lead C228A-15 C289-2
Are the resistances less than 3.0 ohms?
Yes GO to T4 No REPAIR the circuit. - T4 CHECK THE A/C (AIR CONDITIONING) COMPONENTS
- Connect all the door actuators.
- Measure:
Positive Lead Measurement / Action Negative Lead C228A-1 Ground C228A-2 Ground C228A-15 Ground
- While measuring the resistance, disconnect the following components one at a time, in order. Stop disconnecting components if the measured resistance rises above 200 ohms.
- Temperature door actuator C2093
- Air inlet door actuator C289
- Air distribution door actuator C2448
Did the resistance rise above 200 ohms?
Yes INSTALL a new actuator (the last one to be disconnected). REFER to the appropriate REMOVAL AND INSTALLATION . When installing an actuator, CONNECT the actuator electrical connector before the HVAC control module. This allows the actuator to be calibrated when the HVAC control module is connected.TEST the system for normal operation. If the concern is still present, GO to T5 No REPAIR the circuit. - T5 CHECK FOR CORRECT HVAC (HEATING, VENTILATION AND AIR CONDITIONING) CONTROL MODULE OPERATION
- Ignition OFF.
- Disconnect and inspect all HVAC control module electrical connectors (if not previously disconnected).
- Repair:
- corrosion (install new connector or terminal - clean module pins)
- damaged or bent pins - install new terminals or pins
- pushed-out pins - install new pins as necessary
- Connect all HVAC control module electrical connectors. Make sure they seat and latch correctly.
- Operate the system and determine if the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new HVAC control module. REFER to the appropriate REMOVAL AND INSTALLATION . No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.