Heating & Air Conditioning - Electrical Diagnostics: Other Dodge Charger VI

WHEN MONITORED

With the ignition on.

SET CONDITION

The A/C Heater Module detects less than 0.09 volts on the Evaporator Temperature Sensor Signal circuit for a period of two seconds or more. If the A/C Heater Module detects a valid voltage, the DTC will change from active to stored and will stay stored for 100 ignition cycles.

POSSIBLE CAUSES

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 3

Scheme 4

1. CHECK IF THE DTC IS ACTIVE Ignition on, engine not running. Using the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 2 . No Go To 5 .
2. CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the A/C Heater Module C1 harness connector. Disconnect the Evaporator Temperature Sensor harness connector. Measure the resistance between ground and the (C21) Evaporator Temperature Sensor Signal circuit. Is the resistance below 100k Ohms? Yes Repair the (C21) Evaporator Temperature Sensor Signal circuit for a short to ground. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 3 .
3. CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO THE (C121) SENSOR GROUND CIRCUIT Measure the resistance between the (C21) Evaporator Temperature Sensor Signal circuit and the (C121) Sensor Ground circuit. Is the resistance below 100k Ohms? Yes Repair the (C21) Evaporator Temperature Sensor Signal circuit for a short to the (C121) Sensor Ground circuit. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 4 .
4. CHECK THE EVAPORATOR TEMPERATURE SENSOR Replace the Evaporator Temperature Sensor in Accordance with the Service Information. Refer to «SENSOR, EVAPORATOR TEMPERATURE, REMOVAL»(ref-481409-S34901796402012062200000) . Cycle the ignition off for 30 seconds then back on. With the scan tool, read HVAC DTCs. Does this DTC reset? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
5. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. Using the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

With the ignition on.

The A/C Heater Module detects greater than 4.8 volts on the Evaporator Temperature Sensor Signal circuit for a period of two seconds or more. If the A/C Heater Module detects a valid voltage, the DTC will change from active to stored and will stay stored for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 5

Scheme 6

Scheme 7

Scheme 8

1. CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT VOLTAGE Ignition on, engine not running. With the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 2 . No Go To 6 .
2. CHECK THE EVAPORATOR TEMPERATURE SENSOR Turn the ignition off to the lock position. Disconnect the Evaporator Temperature Sensor harness connector. NOTE: Due to the small terminal and pin size of the Evaporator Temperature Sensor and harness connector, make sure to not damage the terminals in this process. Connect a jumper wire between the (C21) Evaporator Temperature Sensor Signal circuit and the (C121) Sensor Ground circuit in the Evaporator Temperature Sensor harness connector. Ignition on, engine not running. With the scan tool, read the Evaporator Temperature Sensor voltage. Is the voltage below 0.2 of a volt? Yes Replace the Evaporator Temperature Sensor in accordance with the Service Information. Refer to «SENSOR, EVAPORATOR TEMPERATURE, REMOVAL»(ref-481409-S34901796402012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 3 .
3. CHECK THE (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the jumper wire from the previous step. Disconnect the A/C Heater Module C1 harness connector. Ignition on, engine not running. Measure the voltage of the (C21) Evaporator Temperature Sensor Signal circuit. Is voltage above 0.2 of a volt? Yes Repair the (C21) Evaporator Temperature Sensor Signal circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 4 .
4. CHECK THE (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Measure the resistance of the (C21) Evaporator Temperature Sensor Signal circuit between the A/C Heater Module C1 harness connector and the Evaporator Temperature Sensor harness connector. Is the resistance above 1.0 Ohm? Yes Repair the (C21) Evaporator Temperature Sensor Signal circuit for an open. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 5 .
5. CHECK THE (C121) SENSOR GROUND CIRCUIT FOR AN OPEN Measure the resistance of the (C121) Sensor Ground circuit between the A/C Heater Module C1 harness connector and the Evaporator Temperature Sensor harness connector. Is the resistance above 1.0 Ohm? Yes Repair the (C121) Sensor Ground circuit for an open. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
6. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. With the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

Scheme 9

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously with the ignition on.

The A/C Heater Module detects a short to ground on the Recirculation Door Driver circuit. If the A/C Heater Module detects a valid current draw, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 10

Scheme 11

1. CHECK IF DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 3 . No Go To 2 .
2. PERFORM HVAC ACTUATOR CALIBRATION TEST With the scan tool, perform the HVAC Actuator Calibration Test. Did this DTC change from Stored to Active while performing the HVAC Actuator Calibration Test? Yes Go To 3 . No Go To 6 .
3. CHECK THE (C32/C268) RECIRCULATION DOOR DRIVER CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the A/C Heater Module C1 harness connector. Disconnect the Recirculation Door Actuator harness connector. Measure the resistance between ground and the (C32/C268) Recirculation Door Driver circuit. Is the resistance below 100k Ohms? Yes Repair the (C32/C268) Recirculation Door Driver circuit for a short to ground. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 4 .
4. CHECK THE (C34/C68) COMMON DOOR DRIVER CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (C34/C68) Common Door Driver circuit. Is the resistance below 100k Ohms? Yes Repair the (C34/C68) Common Door Driver circuit for a short to ground. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 5 .
5. CHECK THE RECIRCULATION DOOR ACTUATOR Replace the Recirculation Door Actuator in accordance with the Service Information. Refer to «ACTUATOR, RECIRCULATION DOOR, REMOVAL»(ref-481409-S14572911302012062200000) . With the scan tool, erase HVAC DTCs and perform the HVAC Actuator Calibration Test. Did this DTC reset? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
6. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. With the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

Continuously with the ignition on.

The A/C Heater Module detects a short voltage on the Recirculation Door control circuit. If the A/C Heater Module detects a valid voltage, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 12

Scheme 13

1. CHECK IF DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 3 . No Go To 2 .
2. PERFORM HVAC ACTUATOR CALIBRATION TEST With the scan tool, perform the HVAC Actuator Calibration Test. Did this DTC change from Stored to Active while performing the HVAC Actuator Calibration Test? Yes Go To 3 . No Go To 6 .
3. CHECK THE (C32/C268) RECIRCULATION DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the A/C Heater Module C1 harness connector. Disconnect the Recirculation Door Actuator harness connector. Ignition on, engine not running. Measure the voltage of the (C32/C268) Recirculation Door Driver circuit. Is there any voltage present? Yes Repair the (C32/C268) Recirculation Door Driver circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 4 .
4. CHECK THE (C34/C68) COMMON DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE Measure the voltage of the (C34/C68) Common Door Driver circuit. Is there any voltage present? Yes Repair the (C34/C68) Common Door Driver circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 5 .
5. CHECK THE RECIRCULATION DOOR ACTUATOR Turn the ignition off to the lock position. Replace the Recirculation Door Actuator in accordance with the Service Information. Refer to «ACTUATOR, RECIRCULATION DOOR, REMOVAL»(ref-481409-S14572911302012062200000) . With the scan tool, erase HVAC DTCs and perform the HVAC Actuator Calibration Test. Did this DTC reset? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
6. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. With the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

Continuously with the ignition on.

The A/C Heater Module detects an open in the Recirculation Door control circuit. If the A/C Heater Module detects a valid current draw, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 14

Scheme 15

1. CHECK IF DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 3 . No Go To 2 .
2. PERFORM HVAC ACTUATOR CALIBRATION TEST With the scan tool, perform the HVAC Actuator Calibration Test. Did this DTC change from Stored to Active while performing the HVAC Actuator Calibration Test? Yes Go To 3 . No Go To 6 .
3. CHECK THE (C32/C268) RECIRCULATION DOOR DRIVER CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect the Recirculation Door Actuator harness connector. Measure the resistance of the (C32/C268) Recirculation Door Driver circuit between the A/C Heater Module C1 harness connector and the Recirculation Door Actuator harness connector. Is the resistance above 1.0 Ohm? Yes Repair the (C32/C268) Recirculation Door Driver circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 4 .
4. CHECK THE (C34/C68) COMMON DOOR DRIVER CIRCUIT FOR AN OPEN Measure the resistance of the (C34/C68) Common Door Driver circuit between the A/C Heater Module C1 harness connector and the Recirculation Door Actuator harness connector. Is the resistance above 1.0 Ohm? Yes Repair the (C34/C68) Common Door Driver circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 5 .
5. CHECK THE RECIRCULATION DOOR ACTUATOR Replace the Recirculation Door Actuator in accordance with the Service Information. Refer to «ACTUATOR, RECIRCULATION DOOR, REMOVAL»(ref-481409-S14572911302012062200000) . With the scan tool, erase HVAC DTCs and perform the HVAC Actuator Calibration Test. Did this DTC reset? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
6. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. With the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

Continuously with the ignition on.

The A/C Heater Module detects no feedback pulses on the Recirculation Door Control circuits for 15 seconds or more. If the A/C Heater Module detects a valid feedback pulse, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

B105C-00-RECIRCULATION DOOR TRAVEL RANGE TOO SMALL

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

When ever an Actuator Calibration Test is performed.

The A/C Heater Module uses a pulse feedback to the controller to detect the total door movement range. If the amount of pulses required to move the door completely in both directions is less than what the controller has stored in its memory, this DTC will set. If an Actuator Calibration Test is performed and the A/C Heater Module detects a valid range of the door movement span in both directions, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

B105D-00-RECIRCULATION DOOR TRAVEL RANGE TOO LARGE

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

When ever an Actuator Calibration Test is performed.

The A/C Heater Module uses a pulse feedback to the controller to detect the total door movement range. If the amount of pulses required to move the door completely in both directions is greater than what the controller has stored in its memory, this DTC will set. If an Actuator Calibration Test is performed or during normal operation and the A/C Heater Module detects a valid range of the door movement span in both directions, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

With ever an A/C Cooldown Test is performed.

This DTC is set whenever the A/C Cooldown Test is performed and the desired temperature drop is not achieved by the system. The DTC will go to stored after a successful A/C Cooldown Test.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

With the ignition on.

When the In-Car Temperature Sensor signal to the A/C Heater Module is less than 0.5 volt for a continuous period of 1200 msec. or more. If the A/C Heater Module detects a valid signal, the DTC will change from active to stored and will stay stored for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 16

1. CHECK IF DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 2 . No Go To 5 .
2. CHECK IF THE IN-CAR TEMPERATURE SENSOR IS PROPERLY CONNECTED Turn the ignition off to the lock position. Check the connector to In-Car Temperature Sensor for proper connection and the terminals for damage or corrosion. Is the In-Car Temperature Sensor connector properly connected and terminals undamaged or corroded? Yes Go To 3 . No Repair connector and terminals as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
3. CHECK THE (C36) IN-CAR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the A/C Heater Module C1 harness connector. Disconnect the In-Car Temperature Sensor harness connector. Measure the resistance between ground and the (C36) In-Car Temperature Sensor Signal circuit. Is the resistance less than 100k Ohms? Yes Repair the In-Car Temperature Sensor Signal circuit for a short to ground. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 4 .
4. CHECK THE IN-CAR TEMPERATURE SENSOR Remove the In-Car Temperature Sensor. Refer to «SENSOR, TEMPERATURE, IN-CAR, REMOVAL»(ref-481409-S12263200062012062200000) . Measure the resistance of the In-Car Temperature Sensor and compare the resistance to the In-Car Temperature Sensor Resistance Chart in the Service Information. Refer to «SENSOR, TEMPERATURE, IN-CAR, DIAGNOSIS AND TESTING»(ref-481409-S20208357612012062200000) . Is the In-Car Temperature Sensor within the specified limits of In-Car Temperature Sensor Resistance Chart? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Replace the In-Car Temperature Sensor in accordance to the Service Information. Refer to «SENSOR, TEMPERATURE, IN-CAR, INSTALLATION»(ref-481409-S39353113292012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
5. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. With the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

With the ignition on.

When the In-Car Temperature Sensor signal to the A/C Heater Module is greater than 4.9 volts for a continuous period of 1200 msec. or more. If the A/C Heater Module detects a valid signal, the DTC will change from active to stored and will stay stored for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 17

1. CHECK IF DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 2 . No Go To 5 .
2. CHECK IF THE IN-CAR TEMPERATURE SENSOR IS PROPERLY CONNECTED Turn the ignition off to the lock position. Check the connector to In-Car Temperature Sensor for proper connection and the terminals for damage or corrosion. Is the In-Car Temperature Sensor connector properly connected and terminals undamaged or corroded? Yes Go To 3 . No Repair connector and terminals as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
3. CHECK THE (C36) IN-CAR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the A/C Heater Module C1 harness connector. Disconnect the In-Car Temperature Sensor harness connector. Ignition on, engine not running. Measure the voltage of the (C36) In-Car Temperature Sensor Signal circuit. Is there any voltage present? Yes Repair the In-Car Temperature Sensor Signal circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 4 .
4. CHECK THE IN-CAR TEMPERATURE SENSOR Remove the In-Car Temperature Sensor. Refer to «SENSOR, TEMPERATURE, IN-CAR, REMOVAL»(ref-481409-S12263200062012062200000) . Measure the resistance of the In-Car Temperature Sensor and compare the resistance to the In-Car Temperature Sensor Resistance Chart in the Service Information. Refer to «SENSOR, TEMPERATURE, IN-CAR, DIAGNOSIS AND TESTING»(ref-481409-S20208357612012062200000) . Is the In-Car Temperature Sensor within the specified limits of In-Car Temperature Sensor Resistance Chart? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Replace the In-Car Temperature Sensor in accordance to the Service Information. Refer to «SENSOR, TEMPERATURE, IN-CAR, INSTALLATION»(ref-481409-S39353113292012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
5. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. With the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

B11C2-11-FRONT MODE DOOR 1 CONTROL - CIRCUIT SHORT TO GROUND

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously with the ignition on.

The A/C Heater Module detects a short to ground on the Mode Door control circuit. If the A/C Heater Module detects a valid current draw, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 18

Scheme 19

1. CHECK IF DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 3 . No Go To 2 .
2. PERFORM HVAC ACTUATOR CALIBRATION TEST With the scan tool, perform the HVAC Actuator Calibration Test. Did this DTC change from Stored to Active while performing the HVAC Actuator Calibration Test? Yes Go To 3 . No Go To 6 .
3. CHECK THE (C35/C66) MODE DOOR DRIVER CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the A/C Heater Module C1 harness connector. Disconnect the Mode Door Actuator harness connector. Measure the resistance between ground and the (C35/C66) Mode Door Driver circuit. Is the resistance below 100k Ohms? Yes Repair the (C35/C66) Mode Door Driver circuit for a short to ground. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 4 .
4. CHECK THE (C807/266) COMMON DOOR DRIVER 2 CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (C807/266) Common Door Driver 2 circuit. Is the resistance below 100k Ohms? Yes Repair the (C807/266) Common Door Driver 2 circuit for a short to ground. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 5 .
5. CHECK THE MODE DOOR ACTUATOR Replace the Mode Door Actuator in accordance with the Service Information. Refer to «ACTUATOR, MODE DOOR, REMOVAL»(ref-481409-S25029061022012062200000) . With the scan tool, erase HVAC DTCs and perform the HVAC Actuator Calibration Test. Did this DTC reset? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
6. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. With the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

B11C2-12-FRONT MODE DOOR 1 CONTROL - CIRCUIT SHORT TO BATTERY

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously with the ignition on.

The A/C Heater Module detects a short voltage on the Mode Door control circuit. If the A/C Heater Module detects a valid voltage, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 20

Scheme 21

1. CHECK IF DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 3 . No Go To 2 .
2. PERFORM HVAC ACTUATOR CALIBRATION TEST With the scan tool, perform the HVAC Actuator Calibration Test. Did this DTC change from Stored to Active while performing the HVAC Actuator Calibration Test? Yes Go To 3 . No Go To 6 .
3. CHECK THE (C35/C66) MODE DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the A/C Heater Module C1 harness connector. Disconnect the Mode Door Actuator harness connector. Ignition on, engine not running. Measure the voltage of the (C35/C66) Mode Door Driver circuit. Is there any voltage present? Yes Repair the (C35/C66) Mode Door Driver circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 4 .
4. CHECK THE (C807/C266) COMMON DOOR DRIVER CIRCUIT 2 FOR A SHORT TO VOLTAGE Measure the voltage of the (C807/C266) Common Door Driver 2 circuit. Is there any voltage present? Yes Repair the (C807/C266) Common Door Driver 2 circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 5 .
5. CHECK THE MODE DOOR ACTUATOR Turn the ignition off to the lock position. Replace the Mode Door Actuator in accordance with the Service Information. Refer to «ACTUATOR, MODE DOOR, REMOVAL»(ref-481409-S25029061022012062200000) . With the scan tool, erase HVAC DTCs and perform the HVAC Actuator Calibration Test. Did this DTC reset? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
6. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. With the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

B11C2-13-FRONT MODE DOOR 1 CONTROL - CIRCUIT OPEN

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously with the ignition on.

The A/C Heater Module detects an open in the Mode Door control circuit. If the A/C Heater Module detects a valid current draw, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 22

Scheme 23

1. CHECK IF DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 3 . No Go To 2 .
2. PERFORM HVAC ACTUATOR CALIBRATION TEST With the scan tool, perform the HVAC Actuator Calibration Test. Did this DTC change from Stored to Active while performing the HVAC Actuator Calibration Test? Yes Go To 3 . No Go To 6 .
3. CHECK THE (C35/C66) MODE DOOR DRIVER CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect the A/C Heater Module C1 harness connector. Disconnect the Mode Door Actuator harness connector. Measure the resistance of the (C35/C66) Mode Door Driver circuit between the A/C Heater Module C1 harness connector and the Mode Door Actuator harness connector. Is the resistance above 1.0 Ohm? Yes Repair the (C35/C66) Mode Door Driver circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 4 .
4. CHECK THE (C807/C266) COMMON DOOR DRIVER 2 CIRCUIT FOR AN OPEN Measure the resistance of the (C807/C266) Common Door Driver 2 circuit between the A/C Heater Module C1 harness connector and the Mode Door Actuator harness connector. Is the resistance above 1.0 Ohm? Yes Repair the (C807/C266) Common Door Driver 2 circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 5 .
5. CHECK THE MODE DOOR ACTUATOR Replace the Mode Door Actuator in accordance with the Service Information. Refer to «ACTUATOR, MODE DOOR, REMOVAL»(ref-481409-S25029061022012062200000) . With the scan tool, erase HVAC DTCs and perform the HVAC Actuator Calibration Test. Did this DTC reset? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
6. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. With the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

Continuously with the ignition on.

The A/C Heater Module detects no feedback pulses on the Mode Door Control circuits for 15 seconds or more. If the A/C Heater Module detects a valid feedback pulse, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

B11C3-00-FRONT MODE DOOR 1 TRAVEL RANGE TOO SMALL

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

When ever an Actuator Calibration Test is performed.

The A/C Heater Module uses a pulse feedback to the controller to detect the total door movement range. If the amount of pulses required to move the door completely in both directions is less than what the controller has stored in its memory, this DTC will set. If an Actuator Calibration Test is performed and the A/C Heater Module detects a valid range of the door movement span in both directions, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

B11C4-00-FRONT MODE DOOR 1 TRAVEL RANGE TOO LARGE

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

When ever an Actuator Calibration Test is performed.

The A/C Heater Module uses a pulse feedback to the controller to detect the total door movement range. If the amount of pulses required to move the door completely in both directions is greater than what the controller has stored in its memory, this DTC will set. If an Actuator Calibration Test is performed or during normal operation and the A/C Heater Module detects a valid range of the door movement span in both directions, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

B11C8-11-RIGHT TEMPERATURE DOOR CONTROL - CIRCUIT SHORT TO GROUND

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously with the ignition on.

The A/C Heater Module detects a short to ground on the Passenger Blend Door control circuit. If the A/C Heater Module detects a valid current draw, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 24

Scheme 25

1. CHECK IF DTC IS ACTIVE Ignition on, engine not running. Using the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 3 . No Go To 2 .
2. PERFORM HVAC ACTUATOR CALIBRATION TEST Using the scan tool, perform the HVAC Actuator Calibration Test. Did this DTC change from Stored to Active while performing the HVAC Actuator Calibration Test? Yes Go To 3 . No Go To 6 .
3. CHECK THE (C33/52) PASSENGER BLEND DOOR DRIVER CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the A/C Heater Module C1 harness connector. Disconnect the Passenger Blend Door Actuator harness connector. Measure the resistance between ground and the (C33/52) Passenger Blend Door Driver circuit. Is the resistance below 100k Ohms? Yes Repair the (C33/52) Passenger Blend Door Driver circuit for a short to ground. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 4 .
4. CHECK THE (C807/C252) COMMON DOOR DRIVER 2 CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (C807/C252) Common Door Driver 2 circuit. Is the resistance below 100k Ohms? Yes Repair the (C807/C252) Common Door Driver 2 circuit for a short to ground. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 5 .
5. CHECK THE PASSENGER BLEND DOOR ACTUATOR Replace the Passenger Blend Door Actuator in accordance with the Service Information. Refer to «ACTUATOR, BLEND DOOR, REMOVAL»(ref-481409-S13434155622012062200000) . Using the scan tool, erase HVAC DTCs and perform the HVAC Actuator Calibration Test. Did this DTC reset? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
6. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. Using the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

B11C8-12-RIGHT TEMPERATURE DOOR CONTROL - CIRCUIT SHORT TO BATTERY

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously with the ignition on.

The A/C Heater Module detects a short voltage on the Passenger Blend Door control circuit. If the A/C Heater Module detects a valid voltage, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 26

Scheme 27

1. CHECK IF DTC IS ACTIVE Ignition on, engine not running. Using the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 3 . No Go To 2 .
2. PERFORM HVAC ACTUATOR CALIBRATION TEST Using the scan tool, perform the HVAC Actuator Calibration Test. Did this DTC change from Stored to Active while performing the HVAC Actuator Calibration Test? Yes Go To 3 . No Go To 6 .
3. CHECK THE (C33/52) PASSENGER BLEND DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the A/C Heater Module C1 harness connector. Disconnect the Passenger Blend Door Actuator harness connector. Ignition on, engine not running. Measure the voltage of the (C33/52) Passenger Blend Door Driver circuit. Is there any voltage present? Yes Repair the (C33/52) Passenger Blend Door Driver circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 4 .
4. CHECK THE (C807/C252) COMMON DOOR DRIVER 2 CIRCUIT FOR A SHORT TO VOLTAGE Measure the voltage of the (C807/C252) Common Door Driver 2 circuit. Is there any voltage present? Yes Repair the (C807/C252) Common Door Driver 2 circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 5 .
5. CHECK THE PASSENGER BLEND DOOR ACTUATOR Replace the Passenger Blend Door Actuator in accordance with the Service Information. Refer to «ACTUATOR, BLEND DOOR, REMOVAL»(ref-481409-S13434155622012062200000) . With the scan tool, erase HVAC DTCs and perform the HVAC Actuator Calibration Test. Did this DTC reset? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
6. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. With the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

B11C8-13-RIGHT TEMPERATURE DOOR CONTROL - CIRCUIT OPEN

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously with the ignition on.

The A/C Heater Module detects an open in the Passenger Blend Door control circuit. If the A/C Heater Module detects a valid current draw, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 28

Scheme 29

1. CHECK IF DTC IS ACTIVE Ignition on, engine not running. Using the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 3 . No Go To 2 .
2. PERFORM HVAC ACTUATOR CALIBRATION TEST Using the scan tool, perform the HVAC Actuator Calibration Test. Did this DTC change from Stored to Active while performing the HVAC Actuator Calibration Test? Yes Go To 3 . No Go To 6 .
3. CHECK THE (C33/52) PASSENGER BLEND DOOR DRIVER CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect the A/C Heater Module C1 harness connector. Disconnect the Passenger Blend Door Actuator harness connector. Measure the resistance of the (C33/52) Passenger Blend Door Driver circuit between the A/C Heater Module C1 harness connector and the Passenger Blend Door Actuator harness connector. Is the resistance above 1.0 Ohm? Yes Repair the (C33/52) Passenger Blend Door Driver circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 4 .
4. CHECK THE (C807/252) COMMON DOOR DRIVER 2 CIRCUIT FOR AN OPEN Measure the resistance of the (C807/252) Common Door Driver 2 circuit between the A/C Heater Module C1 harness connector and the Passenger Blend Door Actuator harness connector. Is the resistance above 1.0 Ohm? Yes Repair the (C807/252) Common Door Driver 2 circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 5 .
5. CHECK THE PASSENGER BLEND DOOR ACTUATOR Replace the Passenger Blend Door Actuator in accordance with the Service Information. Refer to «ACTUATOR, BLEND DOOR, REMOVAL»(ref-481409-S13434155622012062200000) . With the scan tool, erase HVAC DTCs and perform the HVAC Actuator Calibration Test. Did this DTC reset? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
6. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. Using the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

Continuously with the ignition on.

The A/C Heater Module detects no feedback pulses on the Passenger Blend Door Driver circuits for 15 seconds or more. If the A/C Heater Module detects a valid feedback pulse, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

B11C9-00-RIGHT TEMPERATURE DOOR TRAVEL TOO SMALL

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

When ever an Actuator Calibration Test is performed.

The A/C Heater Module uses a pulse feedback to the controller to detect the total door movement range. If the amount of pulses required to move the door completely in both directions is less than what the controller has stored in its memory, this DTC will set. If an Actuator Calibration Test is performed and the A/C Heater Module detects a valid range of the door movement span in both directions, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

B11CA-00-RIGHT TEMPERATURE DOOR TRAVEL TOO LARGE

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

When ever an Actuator Calibration Test is performed.

The A/C Heater Module uses a pulse feedback to the controller to detect the total door movement range. If the amount of pulses required to move the door completely in both directions is greater than what the controller has stored in its memory, this DTC will set. If an Actuator Calibration Test is performed or during normal operation and the A/C Heater Module detects a valid range of the door movement span in both directions, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

B11CB-11-MAIN/LEFT TEMPERATURE DOOR CONTROL - CIRCUIT SHORT TO GROUND

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously with the ignition on.

The A/C Heater Module detects a short to ground on the Driver Blend Door control circuit. If the A/C Heater Module detects valid current draw, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 30

Scheme 31

1. CHECK IF DTC IS ACTIVE Ignition on, engine not running. Using the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 3 . No Go To 2 .
2. PERFORM HVAC ACTUATOR CALIBRATION TEST Using the scan tool, perform the HVAC Actuator Calibration Test. Did this DTC change from Stored to Active while performing the HVAC Actuator Calibration Test? Yes Go To 3 . No Go To 6 .
3. CHECK THE (C61/C55) DRIVER BLEND DOOR DRIVER CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the A/C Heater Module C1 harness connector. Disconnect the Driver Blend Door Actuator harness connector. Measure the resistance between ground and the (C61/C55) Driver Blend Door Driver circuit. Is the resistance below 100k Ohms? Yes Repair the (C61/C55) Driver Blend Door Driver circuit for a short to ground. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 4 .
4. CHECK THE (C34/C255) COMMON DOOR DRIVER CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (C34/C255) Common Door Driver circuit. Is the resistance below 100k Ohms? Yes Repair the (C34/C255) Common Door Driver circuit for a short to ground. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 5 .
5. CHECK THE DRIVER BLEND DOOR ACTUATOR Replace the Driver Blend Door Actuator in accordance with the Service Information. Refer to «ACTUATOR, BLEND DOOR, REMOVAL»(ref-481409-S13434155622012062200000) . Using the scan tool, erase HVAC DTCs and perform the HVAC Actuator Calibration Test. Did this DTC reset? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
6. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. Using the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

B11CB-12-MAIN/LEFT TEMPERATURE DOOR CONTROL - CIRCUIT SHORT TO BATTERY

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously with the ignition on.

The A/C Heater Module detects a short voltage on the Driver Blend Door control circuit. If the A/C Heater Module detects a valid voltage, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 32

Scheme 33

1. CHECK IF DTC IS ACTIVE Ignition on, engine not running. Using the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 3 . No Go To 2 .
2. PERFORM HVAC ACTUATOR CALIBRATION TEST Using the scan tool, perform the HVAC Actuator Calibration Test. Did this DTC change from Stored to Active while performing the HVAC Actuator Calibration Test? Yes Go To 3 . No Go To 6 .
3. CHECK THE (C61/C55) DRIVER BLEND DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the A/C Heater Module C1 harness connector. Disconnect the Driver Blend Door Actuator harness connector. Ignition on, engine not running. Measure the voltage of the (C61/C55) Driver Blend Door Driver circuit. Is there any voltage present? Yes Repair the (C61/C55) Driver Blend Door Driver circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 4 .
4. CHECK THE (C34/C255) COMMON DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE Measure the voltage of the (C34/C255) Common Door Driver circuit. Is there any voltage present? Yes Repair the (C34/C255) Common Door Driver circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 5 .
5. CHECK THE DRIVER BLEND DOOR ACTUATOR Replace the Driver Blend Door Actuator in accordance with the Service Information. Refer to «ACTUATOR, BLEND DOOR, REMOVAL»(ref-481409-S13434155622012062200000) . With the scan tool, erase HVAC DTCs and perform the HVAC Actuator Calibration Test. Did this DTC reset? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
6. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. With the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

B11CB-13-MAIN/LEFT TEMPERATURE DOOR CONTROL - CIRCUIT OPEN

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

Continuously with the ignition on.

The A/C Heater Module detects an open in the Driver Blend Door control circuit. If the A/C Heater Module detects a valid current draw, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 34

Scheme 35

1. CHECK IF DTC IS ACTIVE Ignition on, engine not running. Using the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 3 . No Go To 2 .
2. PERFORM HVAC ACTUATOR CALIBRATION TEST Using the scan tool, perform the HVAC Actuator Calibration Test. Did this DTC change from Stored to Active while performing the HVAC Actuator Calibration Test? Yes Go To 3 . No Go To 6 .
3. CHECK THE (C61/C55) DRIVER BLEND DOOR DRIVER CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect the A/C Heater Module C1 harness connector. Disconnect the Driver Blend Door Actuator harness connector. Measure the resistance of the (C61/C55) Driver Blend Door Driver circuit between the A/C Heater Module C1 harness connector and the Driver Blend Door Actuator harness connector. Is the resistance above 1.0 Ohm? Yes Repair the (C61/C55) Driver Blend Door Driver circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 4 .
4. CHECK THE (C34/C255) COMMON DOOR DRIVER CIRCUIT FOR AN OPEN Measure the resistance of the (C34/C255) Common Door Driver circuit between the A/C Heater Module C1 harness connector and the Driver Blend Door Actuator harness connector. Is the resistance above 1.0 Ohm? Yes Repair the (C34/C255) Common Door Driver circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 5 .
5. CHECK THE DRIVER BLEND DOOR ACTUATOR Replace the Driver Blend Door Actuator in accordance with the Service Information. Refer to «ACTUATOR, BLEND DOOR, REMOVAL»(ref-481409-S13434155622012062200000) . Using the scan tool, erase HVAC DTCs and perform the HVAC Actuator Calibration Test. Did this DTC reset? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
6. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. Using the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

Continuously with the ignition on.

The A/C Heater Module detects no feedback pulses on the Driver Blend Door Driver circuits for 15 seconds or more. If the A/C Heater Module detects a valid feedback pulse, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

B11CC-00-MAIN/LEFT TEMPERATURE DOOR TRAVEL TOO SMALL

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

When ever an Actuator Calibration Test is performed.

The A/C Heater Module uses a pulse feedback to the controller to detect the total door movement range. If the amount of pulses required to move the door completely in both directions is less than what the controller has stored in its memory, this DTC will set. If an Actuator Calibration Test is performed and the A/C Heater Module detects a valid range of the door movement span in both directions, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

B11CD-00-MAIN/LEFT TEMPERATURE DOOR TRAVEL TOO LARGE

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

When ever an Actuator Calibration Test is performed.

The A/C Heater Module uses a pulse feedback to the controller to detect the total door movement range. If the amount of pulses required to move the door completely in both directions is greater than what the controller has stored in its memory, this DTC will set. If an Actuator Calibration Test is performed or during normal operation and the A/C Heater Module detects a valid range of the door movement span in both directions, the DTC will change from Active to Stored and will stay in the controllers memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Whenever an A/C Cooldown Test is performed.

The A/C Heater Module receives a BUS message from the Powertrain Control Module (PCM) that the compressor is not engaged when it is requested.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Whenever an A/C Cooldown Test is performed.

The A/C Heater Module detects a circuit malfunction with the Evaporator Temperature Sensor during a Cooldown Test.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Continuously with the ignition on.

If the A/C Heater Module detects on Sun Sensor Signal 1 circuit a voltage less than 0.5 volt for the period of two seconds or more. This DTC has a de-maturing time of 20 msec. If the DTCs status changes from active to stored, the DTC will stay in memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 36

1. CHECK IF THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 2 . No Go To 4 .
2. CHECK (G39) SUN SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the A/C Heater Module C1 harness connector. Disconnect the Sun Sensor harness connector. Measure the resistance between ground and the (G39) Sun Sensor 1 Signal circuit. Is the resistance below 100k Ohms? Yes Repair the (G39) Sun Sensor 1 Signal circuit for a short to ground. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 3 .
3. CHECK THE SUN SENSOR AND A/C HEATER MODULE Replace the Sun Sensor in accordance with the Service Information. Refer to «SENSOR, SUN, REMOVAL»(ref-481409-S40078127462012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . Did this DTC reset while performing the HVAC Verification Test? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.
4. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. Using the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

Continuously with the ignition on.

If the A/C Heater Module detects on the Sun Sensor 1 Signal circuit a voltage greater than 4.8 volts for the period of two seconds or more. This DTC has a de-maturing time of 20 msec. If the DTCs status changes from active to stored, the DTC will stay in memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 37

Scheme 38

Scheme 39

1. CHECK IF DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 2 . No Go To 6 .
2. CHECK THE (G39) SUN SENSOR 1 SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the Sun Sensor harness connector. Disconnect the A/C Heater Module C1 harness connector. NOTE: Check connectors - Clean/repair as necessary. Ignition on, engine not running. Check the voltage of the (G39) Sun Sensor 1 Signal circuit. Is there any voltage present? Yes Repair the (G39) Sun Sensor 1 Signal circuit for an short to voltage. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 3 .
3. CHECK THE (G39) SUN SENSOR 1 SIGNAL CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Measure the resistance of the (G39) Sun Sensor 1 Signal circuit between the A/C Heater Module C1 harness connector and the Sun Sensor harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (G39) Sun Sensor 1 Signal circuit for an open. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 4 .
4. CHECK THE (C939) SUN SENSOR RETURN CIRCUIT FOR AN OPEN Measure the resistance of the (G939) Sun Sensor Return circuit between the A/C Heater Module C1 harness connector and the Sun Sensor harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (C939) Sun Sensor Return circuit for an open. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 5 .
5. CHECK THE SUN SENSOR AND A/C HEATER MODULE Turn the ignition off to the lock position. Replace the Sun Sensor in accordance with the Service Information. Refer to «SENSOR, SUN, REMOVAL»(ref-481409-S40078127462012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . Did the DTC reset during or after the HVAC Verification Test? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.
6. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. Using the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

Continuously with the ignition on.

The A/C Heater Module detects on the Sun Sensor 1 Signal circuit a voltage less than 1.0 volt and greater than 0.5 volt for period of two seconds or more. This DTC has a de-maturing time of 20 msec. If the DTCs status changes from active to stored, the DTC will stay in memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Continuously with the ignition on.

If the A/C Heater Module detects on Sun Sensor 2 Signal circuit a voltage less than 0.5 volts for the period of two seconds or more. This DTC has a de-maturing time of 20 msec. If the DTCs status changes from active to stored, the DTC will stay in memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 40

1. CHECK IF THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 2 . No Go To 4 .
2. CHECK (G139) SUN SENSOR 2 SIGNAL CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the A/C Heater Module C1 harness connector. Disconnect the Sun Sensor harness connector. Measure the resistance between ground and the (G139) Sun Sensor 2 Signal circuit. Is the resistance below 100k Ohms? Yes Repair the (G139) Sun Sensor 2 Signal circuit for a short to ground. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 3 .
3. CHECK THE SUN SENSOR AND A/C HEATER MODULE Replace the Sun Sensor in accordance with the Service Information. Refer to «SENSOR, SUN, REMOVAL»(ref-481409-S40078127462012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . Did this DTC reset while performing the HVAC Verification Test? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.
4. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. Using the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

Continuously with the ignition on.

If the A/C Heater Module detects on the Sun Sensor 2 Signal circuit a voltage greater than 4.8 volts for the period of two seconds or more. This DTC has a de-maturing time of 20 msec. If the DTCs status changes from active to stored, the DTC will stay in memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 41

Scheme 42

1. CHECK IF DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 2 . No Go To 6 .
2. CHECK THE (G139) SUN SENSOR 2 SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the Sun Sensor harness connector. Disconnect the A/C Heater Control C1 harness connector. NOTE: Check connectors - Clean/repair as necessary. Ignition on, engine not running. Check the voltage of the (G139) Sun Sensor 2 Signal circuit. Is there any voltage present? Yes Repair the (G139) Sun Sensor 2 Signal circuit for an short to voltage. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 3 .
3. CHECK THE (G139) SUN SENSOR 2 SIGNAL CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Measure the resistance of the (G139) Sun Sensor 2 Signal circuit between the A/C Heater Control C1 harness connector and the Sun Sensor harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (G139) Sun Sensor 2 Signal circuit for an open. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 4 .
4. CHECK THE (G939) SUN SENSOR RETURN CIRCUIT FOR AN OPEN Measure the resistance of the (G939) Sun Sensor Return circuit between the A/C Heater Control C1 harness connector and the Sun Sensor harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (G939) Sun Sensor Return circuit for an open. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 5 .
5. CHECK THE SUN SENSOR AND A/C HEATER CONTROL Turn the ignition off to the lock position. Replace the Sun Sensor in accordance with the Service Information. Refer to «SENSOR, SUN, REMOVAL»(ref-481409-S40078127462012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . Did the DTC reset during or after the HVAC Verification Test? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.
6. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. Using the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

Continuously with the ignition on.

The A/C Heater Module detects on the Sun Sensor 2 Signal circuit a voltage less than 1.0 volt and greater than 0.5 volt for period of two seconds or more. This DTC has a de-maturing time of 20 msec. If the DTCs status changes from active to stored, the DTC will stay in memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

B160F-11-TWILIGHT/AMBIENT LIGHT SENSOR INPUT - CIRCUIT SHORT TO GROUND

For a complete wiring diagram, refer to the Wiring Information .

Continuously with the ignition on.

If the A/C Heater Module detects on the Auto Headlamps Signal circuit a voltage less than 0.25 volts for the period of two seconds or more. This DTC has a de-maturing time of 20 msec. If the DTCs status changes from active to stored, the DTC will stay in memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 43

1. CHECK IF THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 2 . No Go To 4 .
2. CHECK (L24) AUTO HEADLAMPS SIGNAL CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the A/C Heater Module C1 harness connector. Disconnect the Sun Sensor harness connector. Measure the resistance between ground and the (L24) Auto Headlamps Signal circuit. Is the resistance below 100k Ohms? Yes Repair the (L24) Auto Headlamps Signal circuit for a short to ground. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 3 .
3. CHECK THE SUN SENSOR AND A/C HEATER MODULE Replace the Sun Sensor in accordance with the Service Information. Refer to «SENSOR, SUN, REMOVAL»(ref-481409-S40078127462012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . Did this DTC reset while performing the HVAC Verification Test? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.
4. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. With the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

B160F-12-TWILIGHT/AMBIENT LIGHT SENSOR INPUT - CIRCUIT SHORT TO BATTERY

For a complete wiring diagram, refer to the Wiring Information .

Continuously with the ignition on.

If the A/C Heater Module detects on the Auto Headlamps Signal circuit a voltage greater than 4.83 volts for the period of two seconds or more. This DTC has a de-maturing time of 20 msec. If the DTCs status changes from active to stored, the DTC will stay in memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 44

Scheme 45

1. CHECK IF THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 2 . No Go To 6 .
2. CHECK THE (L24) AUTO HEADLAMPS SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the A/C Heater Module C1 harness connector. Disconnect the Sun Sensor harness connector. Ignition on, engine not running. Measure the voltage of the (L24) Auto Headlamps Signal circuit. Is there any voltage present? Yes Repair the (L24) Auto Headlamps Signal circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 3 .
3. CHECK THE (L24) AUTO HEADLAMPS SIGNAL CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Measure the resistance of the (L24) Auto Headlamps Signal circuit between the A/C Heater Module C1 harness connector and the Sun Sensor harness connector. Is the resistance below 5.0 Ohms? Yes Go To 4 . No Repair the (L24) Auto Headlamps Signal circuit for an open. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
4. CHECK THE (G939) SUN SENSOR RETURN CIRCUIT FOR AN OPEN Measure the resistance of the (G939) Sun Sensor Return circuit between the A/C Heater Module C1 harness connector and the Sun Sensor harness connector. Is the resistance below 5.0 Ohms? Yes Go To 5 . No Repair the (G939) Sun Sensor Return circuit for an open. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
5. CHECK THE SUN SENSOR AND A/C HEATER MODULE Replace the Sun Sensor in accordance with the Service Information. Refer to «SENSOR, SUN, REMOVAL»(ref-481409-S40078127462012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . Did this DTC reset while performing the HVAC Verification Test? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.
6. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. Using the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

Continuously with the ignition on.

The A/C Heater Module detects on the Auto Headlamps Signal circuit a voltage less than 1.05 volts and greater than 0.25 volt for period of two seconds or more. This DTC has a de-maturing time of 20 msec. If the DTCs status changes from active to stored, the DTC will stay in memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

B210A-84-SYSTEM VOLTAGE LOW - SIGNAL BELOW ALLOWABLE RANGE

For a complete wiring diagram, refer to the Wiring Information .

Continuously with the ignition on.

If the system voltage or ignition voltage broadcast over the BUS is low for period of 15 seconds.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

B210B-85-SYSTEM VOLTAGE HIGH - SIGNAL ABOVE ALLOWABLE RANGE

For a complete wiring diagram, refer to the Wiring Information .

Continuously with the ignition on.

If the system voltage or ignition voltage broadcast over the BUS is higher than monitored controller voltage the for period of 15 seconds.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Continuously with the ignition on.

If the A/C Heater Module detects a voltage less than 9.5 volts for the period of 15 seconds or more. This DTC has a de-maturing time of 20 msec. If the DTCs status changes from active to stored, the DTC will stay in memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Scheme 46

Scheme 47

Scheme 48

1. CHECK FOR CHARGING SYSTEM DTCS Using the scan tool, read PCM DTCs. Are there any charging system DTCs present in the Powertrain Control Module (PCM)? Yes Refer to «3.6L - DIAGNOSTIC CODE INDEX»(ref-481486) or «5.7L - DIAGNOSTIC CODE INDEX»(ref-481493) or «6.4L - DIAGNOSTIC CODE INDEX»(ref-481500) and perform the appropriate diagnostic procedure. No Go To 2 .
2. CHECK FOR BODY CONTROL MODULE DTCS Using the scan tool, read BCM DTCs. Are there any BCM DTCS present? Yes Refer to «BODY CONTROL MODULE (BCM) - DTCS B1208-11 TO B2121-15»(ref-481456) or «BODY CONTROL MODULE (BCM) - DTCS B212E-11 TO U1433-24»(ref-481480) No Go To 3 .
3. CHECK IF THE DTC IS ACTIVE Using the scan tool, read HVAC DTCs. Is this DTC active? Yes Go To 4 . No Go To 7 .
4. CHECK THE (F925) FUSED IGNITION SWITCH OUTPUT CIRCUIT FOR AN OPEN Ignition on, engine not running. While back probing, measure the voltage of the (F925) Fused Ignition Switch Output circuit in the A/C Heater Module C1 harness connector. Is the voltage 9.5 volts or below? Yes Repair the (F925) Fused Ignition Switch Output circuit for an open or high resistance. NOTE: If the fuse is open, make sure to check for a short to ground on the (F925) Fused Ignition Switch Output circuit. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 5 .
5. CHECK THE (A938) FUSED B(+) CIRCUIT FOR AN OPEN Ignition on, engine not running. While back probing, measure the voltage of the (A938) Fused B (+) circuit in the A/C Heater Module C1 harness connector. Is the voltage 9.5 volts or below? Yes Repair the (A938) Fused B (+) circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Go To 6 .
6. CHECK THE (Z911) GROUND CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect the A/C Heater Module C1 harness connector. Using a 12-volt test light connected to 12-volts, check the (Z911) Ground circuit. NOTE: The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery. Does the test light illuminate brightly? Yes Replace and program the A/C Heater Module in accordance with the Service Information. Refer to «MODULE, A/C AND HEATER, REMOVAL»(ref-481399-S33496630972012062200000) . Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Repair the (Z911) Ground circuit for an open. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) .
7. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. Using the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Wiggle the wiring and connectors while checking for shorted and open circuits. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. Refer to «HVAC VERIFICATION TEST»(ref-481431-S31813227422012062200000) . No Test complete.

B210E-85-BATTERY VOLTAGE HIGH - SIGNAL ABOVE ALLOWABLE RANGE

For a complete wiring diagram, refer to the Wiring Information .

Continuously with the ignition on.

If the A/C Heater Module detects a voltage greater than 16.0 volts for the period of 15 seconds or more. This DTC has a de-maturing time of 20 msec. If the DTCs status changes from active to stored, the DTC will stay in memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

B222A-00-VEHICLE LINE MISMATCH

For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .

With the ignition on.

If the stored configuration does not match the configuration stored in the controller.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to HVAC PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .

Continuously when the ignition is on.

The battery voltage between 10.0 and 16.0 Volts.

Telematics Gateway (TGW) is configured correctly.

Bus messages not received from the Telematics Gateway (TGW) for approximately 10 seconds.