Pinpoint Test I: Air Inlet Door Is Inoperative
Climate Control System
Pinpoint Test I: Air Inlet Door is Inoperative
Refer to Wiring Diagram Set 54, Manual Climate Control System for schematic and connector information Electrical Diagrams.
Refer to Wiring Diagram Set 55, Automatic Climate Control System for schematic and connector information Electrical Diagrams.
Normal Operation
The HVAC module supplies ground to the air inlet door actuator motor through the recirc open circuit to rotate the air inlet door actuator 180 degrees to the outside air position, or the recirc close circuit to rotate the air inlet door actuator another 180 degrees to the recirculated air position. Voltage is supplied to the air inlet door actuator.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Air inlet mode door actuator
- HVAC module
- Air inlet mode door binding or stuck
- Front Controls Interface Module (FCIM)
PINPOINT TEST I : AIR INLET DOOR IS INOPERATIVE
NOTE: Access to the connector in the following step is difficult. Before carrying out this step, visually inspect the actuator and its harness for obvious damage. If no damage is evident, proceed with the test.
I1 CHECK VEHICLE EQUIPMENT
- Is the vehicle equipped with the 2.0L engine?
Is the vehicle equipped with the 2.0L engine?
Yes
For DTC B1083:11, GO to I10.
For DTC B1083:12, GO to I11.
For DTC B1083:13, GO to I12.
For DTC B11F0:11, GO to I14.
For DTC B11F0:15, GO to I17.
If no DTCs are present, GO to I9.
No
GO to I2.
I2 CHECK THE AIR INLET MODE DOOR ACTUATOR OPERATION USING ACTIVE COMMANDS
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: DataLogger- HVAC Module PID (A/C Recirculating Servo Position Status (RECIRC_DPOS)).
- Select PANEL mode on the HVAC controls.
- Select the highest blower motor setting.
- Observe airflow noise while using the scan tool to operate the HVAC module active command RECIRC_DPOS between Fresh Air and RECIRC.
Does the airflow noise change when the active command is changed?
Yes
INSTALL a new Front Controls Interface Module (FCIM). TEST the system for normal operation.
No
GO to I3.
I3 CHECK THE AIR INLET MODE DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: HVAC Module- Electronic Manual Temperature Control (EMTC) C2357.
- Disconnect: HVAC Module- Dual Automatic Temperature Control (DATC) C228A.
- Ignition ON.
- For EMTC (Electronic Manual Temperature Control) systems
For EMTC (Electronic Manual Temperature Control) systems, measure the voltage between ground and:
- HVAC module- EMTC (Electronic Manual Temperature Control) C2357-2, circuit CH207 (BU/GY), harness side.
- HVAC module- EMTC (Electronic Manual Temperature Control) C2357-3, circuit CH208 (GN/OG), harness side.
- For DATC (Dual Automatic Temperature Control) systems
For DATC (Dual Automatic Temperature Control) systems, measure the voltage between ground and:
- HVAC module- DATC (Dual Automatic Temperature Control) C228A-2, circuit CH207 (BU/GY), harness side.
- HVAC module- DATC (Dual Automatic Temperature Control) C228A-3, circuit CH208 (GN/OG), harness side.
Is any voltage present?
Yes
GO to I4.
No
REPAIR circuit CH207 (BU/GY)/(BN) or CH208 (GN/OG)/(GN) for a short to voltage. TEST the system for normal operation.
I4 CHECK THE AIR INLET MODE DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TO GROUND
- Ignition OFF.
- For EMTC (Electronic Manual Temperature Control) systems
For EMTC (Electronic Manual Temperature Control) systems, measure the resistance between ground and:
- HVAC module- EMTC (Electronic Manual Temperature Control) C2357-2, circuit CH207 (BU/GY), harness side.
- HVAC module- EMTC (Electronic Manual Temperature Control) C2357-3, circuit CH208 (GN/OG), harness side.
- For DATC (Dual Automatic Temperature Control) systems
For DATC (Dual Automatic Temperature Control) systems, measure the resistance between ground and:
- HVAC module- DATC (Dual Automatic Temperature Control) C228A-2, circuit CH207 (BU/GY), harness side.
- HVAC module- DATC (Dual Automatic Temperature Control) C228A-3, circuit CH208 (GN/OG), harness side.
Are the resistances greater than 10,000 ohms?
Yes
GO to I5.
No
REPAIR circuit CH207 (BU/GY)/(BN) or CH208 (GN/OG)/(GN) for a short to ground. TEST the system for normal operation.
I5 CHECK THE AIR INLET MODE DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TOGETHER
- For EMTC (Electronic Manual Temperature Control) systems
For EMTC (Electronic Manual Temperature Control) systems, measure the resistance between HVAC module- EMTC (Electronic Manual Temperature Control) C2357-2, circuit CH207 (BU/GY), harness side and HVAC module- EMTC (Electronic Manual Temperature Control) C2357-3, circuit CH208 (GN/OG), harness side.
- For DATC (Dual Automatic Temperature Control) systems
For DATC (Dual Automatic Temperature Control) systems, measure the resistance between HVAC module- DATC (Dual Automatic Temperature Control) C228A-2, circuit CH207 (BU/GY), harness side and HVAC module- DATC (Dual Automatic Temperature Control) C228A-3, circuit CH208 (GN/OG), harness side.
Is the resistance greater than 10,000 ohms?
Yes
GO to I6.
No
REPAIR circuit CH207 (BU/GY)/(BN) and CH208 (GN/OG)/(GN) for a short together. TEST the system for normal operation.
I6 CHECK THE AIR INLET MODE DOOR ACTUATOR FOR VOLTAGE
NOTE: Access to the connector in the following step is difficult. Before carrying out this step, visually inspect the actuator and its harness for obvious damage. If no damage is evident, proceed with the test.
- Disconnect: Air Inlet Door Actuator C2363.
- Ignition ON.
- Measure the voltage between ground and air inlet door actuator C2363-7, circuit (GY), harness side.
Is the voltage greater than 10 volts?
Yes
VERIFY Body Control Module (BCM) fuse 37 (10A) is OK. If OK, REPAIR circuit CBP37 (WH)/(GY) for an open. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation. If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short Electrical Diagrams.
No
GO to I7.
I7 CHECK THE AIR INLET MODE DOOR ACTUATOR MOTOR CIRCUITS FOR AN OPEN
- Ignition OFF.
- Measure the resistance between:
- For EMTC (Electronic Manual Temperature Control) systems, HVAC module- EMTC (Electronic Manual Temperature Control) C2357-2, circuit CH207 (BU/GY), harness side and air inlet door actuator C2363-1, circuit (BN), harness side.
- For DATC (Dual Automatic Temperature Control) systems, HVAC module- DATC (Dual Automatic Temperature Control) C228A-2, circuit CH207 (BU/GY), harness side and air inlet door actuator C2363-1, circuit (BN), harness side.
- Measure the resistance between:
- For EMTC (Electronic Manual Temperature Control) systems, HVAC module- EMTC (Electronic Manual Temperature Control) C2357-3, circuit CH208 (GN/OG), harness side and air inlet door actuator C2363-3, circuit (GN), harness side.
- For DATC (Dual Automatic Temperature Control) systems, HVAC module- DATC (Dual Automatic Temperature Control) C228A-3, circuit CH208 (GN/OG), harness side and air inlet door actuator C2363-3, circuit (GN), harness side.
Are the resistances less than 5 ohms?
Yes
GO to I8.
No
REPAIR circuit CH207 (BU/GY)/(BN) or CH208 (GN/OG)/(GN) for an open. TEST the system for normal operation.
I8 CHECK THE AIR INLET MODE DOOR ACTUATOR OPERATION
NOTE: If a jumper fuse opens while carrying out this test step, repair the circuits for a short to voltage.
- Connect: Air Inlet Door Actuator C2363.
- Ignition ON.
- Carry out the following steps while observing the air inlet door through the glove compartment door opening.
- NOTE: This step positions the actuator for the following steps.
Connect a fused jumper wire between:
- For EMTC (Electronic Manual Temperature Control) systems, HVAC module- EMTC (Electronic Manual Temperature Control) C2357-10, circuit GD115 (BK/GY), harness side and HVAC Module- EMTC (Electronic Manual Temperature Control) C2357-2, circuit CH207 (BU/GY), harness side.
- For DATC (Dual Automatic Temperature Control) systems, HVAC module- EMTC (Electronic Manual Temperature Control) C228A-10, circuit GD115 (BK/GY), harness side and HVAC Module- EMTC (Electronic Manual Temperature Control) C228A-2, circuit CH207 (BU/GY), harness side.
- Remove the fused jumper wire.
- Connect a fused jumper wire between:
- For EMTC (Electronic Manual Temperature Control) systems, HVAC module- EMTC (Electronic Manual Temperature Control) C2357-10, circuit GD115 (BK/GY), harness side and HVAC Module- EMTC (Electronic Manual Temperature Control) C2357-3, circuit CH208 (GN/OG), harness side.
- For DATC (Dual Automatic Temperature Control) systems, HVAC module- EMTC (Electronic Manual Temperature Control) C228A-10, circuit GD115 (BK/GY), harness side and HVAC Module- EMTC (Electronic Manual Temperature Control) C228A-3, circuit CH208 (GN/OG), harness side.
- Remove the fused jumper wire.
- Connect a fused jumper wire between:
- For EMTC (Electronic Manual Temperature Control) systems, HVAC module- EMTC (Electronic Manual Temperature Control) C2357-10, circuit GD115 (BK/GY), harness side and HVAC Module- EMTC (Electronic Manual Temperature Control) C2357-2, circuit CH207 (BU/GY), harness side.
- For DATC (Dual Automatic Temperature Control) systems, HVAC module- EMTC (Electronic Manual Temperature Control) C228A-10, circuit GD115 (BK/GY), harness side and HVAC Module- EMTC (Electronic Manual Temperature Control) C228A-2, circuit CH207 (BU/GY), harness side.
Does the air inlet door open and close?
Yes
GO to I22.
No
INSPECT for binding or broken linkage. REPAIR linkage as necessary. If no condition is found, GO to I21.
I9 CHECK THE AIR INLET MODE DOOR ACTUATOR OPERATION USING ACTIVE COMMANDS
- Enter the following diagnostic mode on the scan tool: DataLogger- HVAC Module PID (A/C Recirculating Servo Position Status (RECIRC_DPOS)).
- Select PANEL mode on the HVAC controls.
- Select the highest blower motor setting.
- Observe airflow noise while using the scan tool to operate the HVAC module active command RECIRC_DPOS between Fresh Air and RECIRC.
Does the airflow noise change when the active command is changed?
Yes
INSTALL a new Front Controls Interface Module (FCIM). TEST the system for normal operation.
No
INSPECT for broken linkage or door. REPAIR as necessary. If no condition is found, GO to I21.
I10 CHECK THE AIR INLET MODE DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TO GROUND
- Ignition OFF.
- Disconnect: HVAC Module- Dual Automatic Temperature Control (DATC) C228A.
- Disconnect: HVAC Module- DATC (Dual Automatic Temperature Control) C228B.
- Disconnect: HVAC Module- Electronic Manual Temperature Control (EMTC) C2357.
- For DATC (Dual Automatic Temperature Control), measure the resistance between ground and:
- HVAC module- DATC (Dual Automatic Temperature Control) C228A-2, circuit CH207 (BU/GY), harness side.
- HVAC module- DATC (Dual Automatic Temperature Control) C228A-3, circuit CH208 (GN/OG), harness side.
- For EMTC (Electronic Manual Temperature Control), measure the resistance between ground and:
- HVAC module- EMTC (Electronic Manual Temperature Control) C2357-2, circuit CH207 (BU/GY), harness side.
- HVAC module- EMTC (Electronic Manual Temperature Control) C2357-3, circuit CH208 (GN/OG), harness side.
Are the resistances greater than 10,000 ohms?
Yes
GO to I13.
No
REPAIR the circuit CH207 (BU/GY) or CH208 (GN/OG) for a short to ground. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
I11 CHECK THE AIR INLET MODE DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: HVAC Module- DATC (Dual Automatic Temperature Control) C228A.
- Disconnect: HVAC Module- DATC (Dual Automatic Temperature Control) C228B.
- Disconnect: HVAC Module- EMTC (Electronic Manual Temperature Control) C2357.
- Ignition ON.
- For DATC (Dual Automatic Temperature Control), measure the voltage between ground and:
- HVAC module- DATC (Dual Automatic Temperature Control) C228A-2, circuit CH207 (BU/GY), harness side.
- HVAC module- DATC (Dual Automatic Temperature Control) C228A-3, circuit CH208 (GN/OG), harness side.
- For EMTC (Electronic Manual Temperature Control), measure the voltage between ground and:
- HVAC module- EMTC (Electronic Manual Temperature Control) C2357-2, circuit CH207 (BU/GY), harness side.
- HVAC module- EMTC (Electronic Manual Temperature Control) C2357-3, circuit CH208 (GN/OG), harness side.
Is any voltage present?
Yes
REPAIR the circuit CH207 (BU/GY) or CH208 (GN/OG) for a short to voltage. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
No
GO to I13.
I12 CHECK THE AIR INLET MODE DOOR ACTUATOR MOTOR CIRCUITS FOR AN OPEN
NOTE: Access to the connector in the following step is difficult. Before carrying out this step, visually inspect the actuator and its harness for obvious damage. If no damage is evident, proceed with the test.
- Ignition OFF.
- Disconnect: Air Inlet Door Actuator C2363.
- Disconnect: HVAC Module- DATC (Dual Automatic Temperature Control) C228A.
- Disconnect: HVAC Module- DATC (Dual Automatic Temperature Control) C228B.
- Disconnect: HVAC Module- EMTC (Electronic Manual Temperature Control) C2357.
- Measure the resistance between HVAC module- DATC (Dual Automatic Temperature Control) C228A or EMTC (Electronic Manual Temperature Control) C2357, harness side and air inlet mode door actuator C2363, harness side using the following chart:
DATC (Dual Automatic Temperature Control) Module Circuit Air Inlet Mode Door Actuator C228A-2 CH207 (BU/GY) C2357-7 EMTC (Electronic Manual Temperature Control) Module Circuit Air Inlet Mode Door Actuator C2357-2 CH207 (BU/GY) C2357-7
- Measure the resistance between HVAC module- DATC (Dual Automatic Temperature Control) C228A or EMTC (Electronic Manual Temperature Control) C2357, harness side and air inlet mode door actuator C2363, harness side using the following chart:
DATC (Dual Automatic Temperature Control) Module Circuit Air Inlet Mode Door Actuator C228A-3 CH208 (GN/OG) C2357-6 EMTC (Electronic Manual Temperature Control) Module Circuit Air Inlet Mode Door Actuator C2357-3 CH208 (GN/OG) C2357-6
Are the resistances less than 5 ohms?
Yes
GO to I21.
No
REPAIR the circuit CH207 (BU/GY) or CH208 (GN/OG) for an open. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
I13 CHECK THE AIR INLET MODE DOOR ACTUATOR MOTOR CIRCUITS FOR A SHORT TOGETHER
NOTE: Access to the connector in the following step is difficult. Before carrying out this step, visually inspect the actuator and its harness for obvious damage. If no damage is evident, proceed with the test.
- Ignition OFF.
- Disconnect: Air Inlet Door Actuator C2363.
- For DATC (Dual Automatic Temperature Control), measure the resistance HVAC module C228A-2, circuit CH207 (BU/GY), harness side, and HVAC module C228A-3, circuit CH208 (GN/OG), harness side.
- For EMTC (Electronic Manual Temperature Control), measure the resistance between HVAC module C2357-2, circuit CH207 (BU/GY), harness side, and HVAC module C2357-3, circuit CH208 (GN/OG), harness side.
Is the resistance greater than 10,000 ohms?
Yes
GO to I21.
No
REPAIR the circuits CH207 (BU/GY) and CH208 (GN/OG) for a short together. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
I14 CHECK THE AIR INLET MODE DOOR ACTUATOR FEEDBACK CIRCUIT FOR A SHORT TO GROUND
- Ignition OFF.
- Disconnect: HVAC Module- DATC (Dual Automatic Temperature Control) C228A.
- Disconnect: HVAC Module- DATC (Dual Automatic Temperature Control) C228B.
- Disconnect: HVAC Module- EMTC (Electronic Manual Temperature Control) C2357.
- For DATC (Dual Automatic Temperature Control), measure the resistance between ground and HVAC module C228A-16, circuit VH438 (GN/VT), harness side.
- For EMTC (Electronic Manual Temperature Control), measure the resistance between ground and HVAC module C2357-16, circuit VH438 (GN/VT), harness side.
Is the resistance greater than 10,000 ohms?
Yes
GO to I15.
No
REPAIR circuit VH438 (GN/VT) for a short to ground. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
I15 CHECK THE SIGNAL RETURN CIRCUIT FOR A SHORT TO THE AIR INLET MODE DOOR ACTUATOR FEEDBACK CIRCUIT
NOTE: Access to the connector in the following step is difficult. Before carrying out this step, visually inspect the actuator and its harness for obvious damage. If no damage is evident, proceed with the test.
- Disconnect: Air Inlet Door Actuator C2363.
- For DATC (Dual Automatic Temperature Control), measure the resistance between HVAC module C228A-23, circuit RH111 (GY/BU) and HVAC module C228A-16, circuit VH438 (GN/VT), harness side.
- For EMTC (Electronic Manual Temperature Control), measure the resistance between HVAC module C2357-23, circuit RH111 (GY/BU) and HVAC module C2357-16, circuit VH438 (GN/VT), harness side.
Is the resistance greater than 10,000 ohms?
Yes
GO to I16.
No
REPAIR circuits RH111 (GY/BU)/(BK) and VH438 (GN/VT) for a short together. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
I16 CHECK THE REFERENCE VOLTAGE CIRCUIT FOR AN OPEN
- For DATC (Dual Automatic Temperature Control), measure the resistance between HVAC module C228A-24, circuit LH111 (BN/WH) and air inlet mode door actuator C2363-3, circuit LH111 (OG), harness side.
- For EMTC (Electronic Manual Temperature Control), measure the resistance between HVAC module C2357-24, circuit LH111 (BN/WH) and air inlet mode door actuator C2363-3, circuit LH111 (OG), harness side.
Is the resistance less than 5 ohms?
Yes
GO to I21.
No
REPAIR circuit LH111 (BN/WH)/(OG) for an open. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
I17 CHECK THE AIR INLET MODE DOOR ACTUATOR FEEDBACK CIRCUIT FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: HVAC Module- DATC (Dual Automatic Temperature Control) C228A.
- Disconnect: HVAC Module- DATC (Dual Automatic Temperature Control) C228B.
- Disconnect: HVAC Module- EMTC (Electronic Manual Temperature Control) C2357.
- Ignition ON.
- For DATC (Dual Automatic Temperature Control), measure the voltage between ground and HVAC module C228A-16, circuit VH438 (GN/VT), harness side.
- For EMTC (Electronic Manual Temperature Control), measure the voltage between ground and HVAC module C2357-16, circuit VH438 (GN/VT), harness side.
Is any voltage present?
Yes
REPAIR circuit VH438 (GN/VT) for a short to voltage. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
No
GO to I18.
I18 CHECK THE REFERENCE VOLTAGE CIRCUIT FOR A SHORT TO THE AIR INLET MODE DOOR ACTUATOR FEEDBACK CIRCUIT
NOTE: Access to the connector in the following step is difficult. Before carrying out this step, visually inspect the actuator and its harness for obvious damage. If no damage is evident, proceed with the test.
- Ignition OFF.
- Disconnect: Air Inlet Door Actuator C2363.
- For DATC (Dual Automatic Temperature Control), measure the resistance between HVAC module C228A-24, circuit LH111 (BN/WH) and HVAC module C228A-16, circuit VH438 (GN/VT), harness side.
- For EMTC (Electronic Manual Temperature Control), measure the resistance between HVAC module C2357-24, circuit LH111 (BN/WH) and HVAC module C2357-16, circuit VH438 (GN/VT), harness side.
Is the resistance greater than 10,000 ohms?
Yes
GO to I19.
No
REPAIR circuits LH111 (BN/WH)/(OG) and VH438 (GN/VT) for a short together. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
I19 CHECK THE AIR INLET MODE DOOR ACTUATOR FEEDBACK CIRCUIT FOR AN OPEN
- For DATC (Dual Automatic Temperature Control), measure the resistance between HVAC module C228A-16, circuit VH438 (GN/VT) and air inlet mode door actuator C2363-5, circuit VH438 (GN/VT), harness side.
- For EMTC (Electronic Manual Temperature Control), measure the resistance between HVAC module C2357-16, circuit VH438 (GN/VT) and air inlet mode door actuator C2363-5, circuit VH438 (GN/VT), harness side.
Is the resistance less than 5 ohms?
Yes
GO to I20.
No
REPAIR circuit VH441 (WH/BN)/(RD) for an open. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
I20 CHECK THE AIR INLET MODE DOOR ACTUATOR RETURN SIGNAL RETURN CIRCUIT FOR AN OPEN
- For DATC (Dual Automatic Temperature Control), measure the resistance between HVAC module C228A-23, circuit RH111 (GY/BU) and air inlet mode door actuator C2363-1, circuit RH111 (BK), harness side.
- For EMTC (Electronic Manual Temperature Control), measure the resistance between HVAC module C2357-23, circuit RH111 (GY/BU) and air inlet mode door actuator C2363-1, circuit RH111 (BK), harness side.
Is the resistance less than 5 ohms?
Yes
GO to I21.
No
REPAIR circuit RH111 (GY/BU)/(BK) for an open. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
I21 CHECK THE AIR INLET MODE DOOR ACTUATOR CONNECTION
- Disconnect the air inlet mode door actuator connector.
- Inspect the air inlet door actuator component and harness side connectors for:
- corrosion
- damaged pins
- pushed-out terminals
- Connect and correctly seat the actuator connector.
- Clear the DTCs.
- Enter the following diagnostic mode on the scan tool: Self-Test- HVAC Module.
- Operate the system and verify the concern is still present.
Is the concern still present?
Yes
INSTALL a new actuator. TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. TEST the system for normal operation.
I22 CHECK THE HVAC MODULE CONNECTION
- Inspect the HVAC module component and harness side connectors for:
- corrosion
- damaged pins
- pushed-out terminals
- Connect and correctly seat all the HVAC module connectors.
- Enter the following diagnostic mode on the scan tool: Self-Test- HVAC Module.
- Operate the system and verify the concern is still present.
Is the concern still present?
Yes
INSTALL a new HVAC module. TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. TEST the system for normal operation.