Heating & Air Conditioning (Atc) - Electrical Diagnostics: Other Dodge Journey I

Monitor Conditions

1. When Monitored: With the ignition on.

Set Conditions

1. Set Condition: If the A/C On/Off Control Switch is stuck in an On position for more than four minutes. This DTC has a de-maturing time of one second. If the DTCs status changes from active to stored, the DTC will stay in memory for 100 ignition cycles.

Possible Causes

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on.

1. Set Condition: If the Recirculation switch is stuck in a On position for more than four minutes. This DTC has a de-maturing time of one second. 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on.

1. Set Condition: If the Defrost switch is stuck in an On position for more than four minutes. This DTC has a de-maturing time of one second. 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on.

1. Set Condition: If the Rear Defrost switch (ELB) is stuck in an On position for more than four minutes. This DTC has a de-maturing time of one second. 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on.

1. Set Condition: If the Power On/Off switch is stuck in an On position for more than four minutes. This DTC has a de-maturing time of one second. 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on.

1. Set Condition: If the Blower Up switch is stuck in an On position for more than four minutes. This DTC has a de-maturing time of one second. 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on.

1. Set Condition: If the Blower Down switch is stuck in an On position for more than four minutes. This DTC has a de-maturing time of one second. 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on.

1. Set Condition: If the A/C Heater Control detects a voltage less than 0.23 volts for 60 seconds on the Rear Blower Signal circuit. If a valid voltage is detected for 2 seconds the DTC will change from active to stored and stay in the controllers memory for 100 consecutive ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/HVAC - Standard Procedure .

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1. VERIFY THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, erase HVAC DTCs. Turn the ignition off, wait 10 seconds, and turn the ignition on. NOTE: Make sure the Rear Control Lockout on the A/C Heater Control is not turned on. After waiting a minimum of 60 seconds, read HVAC DTCs. Does the scan tool display this DTC as active? Yes Go To 2 No Go to step 9
2. CHECK FOR OTHER REQUEST CIRCUIT LOW DTCS With the scan tool, read HVAC DTCs. Does the scan tool also display the DTCs B102E-Rear Blend Request Input Circuit Low and B113D-Rear Mode Request Low as active? Yes Go to step 3 No Go to step 6
3. CHECK THE REAR A/C HEATER CONTROL CONNECTOR Check if the Rear A/C Heater Control harness connector is unplugged or not fully seated. Check the Rear A/C Heater Control and harness connector for pushed out, damaged, corroded pins or terminals. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 4
4. CHECK THE (C800) 5 VOLT SUPPLY CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the A/C Heater Control harness connector. Disconnect the Rear A/C Heater Control harness connector. Measure the resistance between ground and the (C800) 5 Volt Supply circuit. Is the resistance below 100k Ohms? Yes Repair the (C800) 5 Volt Supply circuit for a short to ground Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 5
5. CHECK THE (C800) 5 VOLT SUPPLY CIRCUIT FOR AN OPEN Measure the resistance of the (C800) 5 Volt Supply circuit between A/C Heater Control harness connector and the Rear A/C Heater Control harness connector. Is the resistance below 1.0 Ohm? Yes Go to step 8 No Repair the (C800) 5 Volt Supply circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
6. CHECK THE (C11) REAR BLOWER SIGNAL CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the A/C Heater Control harness connector. Disconnect the Rear A/C Heater Control harness connector. Measure the resistance between ground and the (C11) Rear Blower Signal circuit. Is the resistance below 100k Ohms? Yes Repair the (C11) Rear Blower Control Signal circuit for a short to ground. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 7
7. CHECK THE (C11) REAR BLOWER SIGNAL CIRCUIT FOR AN OPEN Measure the resistance of the (C11) Rear Blower Signal circuit between A/C Heater Control harness connector and the Rear A/C Heater Control harness connector. Is the resistance below 1.0 Ohm? Yes Go to step 8 No Repair the (C11) Rear Blower Signal circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
8. CHECK THE HVAC CONTROL MODULES Reconnect the A/C Heater Control harness connector. Ignition on, engine not running. With the scan tool, erase HVAC DTCs. Turn the ignition off to the lock position. Connect a jumper wire between the (C800) 5-volt Supply circuit and the (C11) Rear Blower Control Signal circuit in the Rear A/C Heater Control harness connector. Ignition on, engine not running. After waiting a minimum of 60 seconds, with the scan tool, read HVAC DTCs. Does the scan tool display this DTC as active? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Replace the Rear A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
9. 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 «SYSTEM WIRING DIAGRAMS»(ref-313026) 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: With the ignition on.

1. Set Condition: If the A/C Heater Control detects the voltage is greater than 4.77 volts for 60 seconds on the Rear Blower Signal circuit. If a valid voltage is detected for two seconds the DTC will change from active to stored and stay in the controllers memory for 100 consecutive ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/HVAC - Standard Procedure .

Scheme 11

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1. VERIFY THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, erase HVAC DTCs. Turn the ignition off, wait 10 seconds, and turn the ignition on. NOTE: Make sure the Rear Control Lockout on the A/C Heater Control is not turned on. With the scan tool, read HVAC DTCs after 60 seconds. Does the scan tool display this DTC as active? Yes Go To 2 No Go to step 7
2. CHECK FOR OTHER REAR REQUEST CIRCUIT HIGH DTCS With the scan tool, read HVAC DTCs. Are the DTCs B102F-Rear Blend Request Input Circuit High and B113E-Rear Mode Request Circuit High also present and Active? Yes Go To 4 No Go To 3
3. CHECK THE (C11) REAR BLOWER SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the A/C Heater Module harness connector. Disconnect the Rear A/C Heater Control harness connector. Ignition on, engine not running. Measure the voltage of the (C11) Rear Blower Signal circuit. Is there any voltage present? Yes Repair the (C11) Rear Blower Signal circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 6
4. CHECK THE (C955) SIGNAL GROUND CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the A/C Heater Control harness connector. Disconnect the Rear A/C Heater Control harness connector. Ignition on, engine not running. Measure the voltage of the (C955) Signal Ground circuit. Is there any voltage present? Yes Repair the (C955) Signal Ground circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 5
5. CHECK THE (C955) SIGNAL GROUND CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Measure the resistance of the (C955) Signal Ground circuit between the A/C Heater Control harness connector and the Rear A/C Heater Control harness connector. Is the resistance below 1.0 Ohm? Yes Go to step 6 No Repair the (C955) Signal Ground circuit for an open. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
6. CHECK THE HVAC CONTROL MODULES Ignition on, engine not running. With the scan tool, erase HVAC DTCs. Turn the ignition off to the lock position. Reconnect the A/C Heater Control harness connector. NOTE: The Rear A/C Heater Control harness connector should still be disconnected. Ignition on, engine not running. With the scan tool, read HVAC DTCs after 60 seconds. Does the scan tool display this DTC? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Replace the Rear A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
7. 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: With the ignition on.

1. Set Condition: If the A/C Heater Control detects a voltage less than 0.21 volts for 60 seconds on the Rear Blend Signal circuit. If a valid voltage is detected for two seconds the DTC will change from active to stored and stay in the controllers memory for 100 consecutive ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/HVAC - Standard Procedure .

Scheme 14

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1. VERIFY THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, erase HVAC DTCs. Turn the ignition off, wait 10 seconds, and turn the ignition on. NOTE: Make sure the Rear Control Lockout on the A/C Heater Control is not turned on. After waiting a minimum of 60 seconds, read HVAC DTCs. Does the scan tool display this DTC as active? Yes Go To 2 No Go to step 9
2. CHECK FOR OTHER REAR REQUEST CIRCUIT LOW DTCS With the scan tool, read HVAC DTCs. Does the scan tool also display the DTCs B1028-Rear Blower Control Request Input Circuit Low and B113D-Rear Mode Request Low as active? Yes Go to step 3 No Go to step 6
3. CHECK THE REAR A/C HEATER CONTROL CONNECTOR Check if the Rear A/C Heater Control harness connector is unplugged or not fully seated. Check the Rear A/C Heater Control and harness connector for pushed out, damaged, corroded pins or terminals. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 4
4. CHECK THE (C800) 5 VOLT SUPPLY CIRCUIT FOR SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the A/C Heater Control harness connector. Disconnect the Rear A/C Heater Control harness connector. Measure the resistance between ground and the (C800) 5 Volt Supply circuit. Is the resistance below 100k Ohms? Yes Repair the (C800) 5 Volt Supply circuit for a short to ground. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 5
5. CHECK THE (C800) 5 VOLT SUPPLY CIRCUIT FOR AN OPEN Measure the resistance of the (C800) 5 Volt Supply circuit between the A/C Heater Control harness connector and the Rear A/C Heater Control harness connector. Is the resistance below 1.0 Ohm? Yes Go to step 8 No Repair the (C800) 5 Volt Supply circuit for an open. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
6. CHECK THE (C254) REAR BLEND SIGNAL CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the A/C Heater Control harness connector. Disconnect the Rear A/C Heater Control harness connector. Measure the resistance between ground and the (C254) Rear Blend Signal circuit. Is the resistance below 100k Ohms? Yes Repair the (C254) Rear Blend Signal circuit for a short to ground. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 7
7. CHECK THE (C254) REAR BLEND SIGNAL CIRCUIT FOR AN OPEN Measure the resistance of the (C254) Rear Blend Signal circuit between A/C Heater Control harness connector and the Rear A/C Heater Control harness connector. Is the resistance below 1.0 Ohm? Yes Go to step 8 No Repair the (C254) Rear Blend Signal circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
8. CHECK THE HVAC CONTROL MODULES Ignition on, engine not running. With the scan tool, erase HVAC DTCs. Turn the ignition off to the lock position. Reconnect the A/C Heater Control harness connector. Connect a jumper wire between the (C800) 5-volt Supply circuit and the (C254) Rear Blend Signal circuit in the Rear A/C Heater Control harness connector. Ignition on, engine not running. After waiting a minimum of 60 seconds, with the scan tool, read HVAC DTCs. Does the scan tool display this DTC as active? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Replace the Rear A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
9. 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 «SYSTEM WIRING DIAGRAMS»(ref-313026) 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: With the ignition on.

1. Set Condition: If the A/C Heater Control detects the voltage is greater than 4.21 volts for 60 seconds on the Rear Blend Signal circuit. If a valid voltage is detected for two seconds the DTC will change from active to stored and stay in the controllers memory for 100 consecutive ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/HVAC - Standard Procedure .

Scheme 17

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1. VERIFY THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, erase HVAC DTCs. Turn the ignition off, wait 10 seconds, and turn the ignition on. NOTE: Make sure the Rear Control Lockout on the A/C Heater Control is not turned on. With the scan tool, read HVAC DTCs after 60 seconds. Does the scan tool display this DTC as active? Yes Go To 2 No Go to step 7
2. CHECK FOR OTHER REAR REQUEST CIRCUIT HIGH DTCS With the scan tool, read HVAC DTCs. Are the DTCs B1029-Rear Blower Control Request Input Circuit High and B113E-Rear Mode Request Circuit High also present and Active? Yes Go to step 3 No Go To 5
3. CHECK THE (C955) SIGNAL GROUND CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the A/C Heater Control harness connector. Disconnect the Rear A/C Heater Control harness connector. Ignition on, engine not running. Measure the voltage of the (C955) Signal Ground circuit. Is there any voltage present? Yes Repair the (C955) Signal Ground circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 4
4. CHECK THE (C955) SIGNAL GROUND CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Measure the resistance of the (C955) Signal Ground circuit between the A/C Heater Control harness connector and the Rear A/C Heater Control harness connector. Is the resistance below 1.0 Ohm? Yes Go to step 6 No Repair the (C955) Signal Ground circuit for an open. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
5. CHECK THE (C254) REAR BLEND SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the A/C Heater Module harness connector. Disconnect the Rear A/C Heater Control harness connector. Ignition on, engine not running. Measure the voltage of the (C254) Rear Blend Signal circuit. Is there any voltage present? Yes Repair the (C254) Rear Blend Signal circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 6
6. CHECK THE HVAC CONTROL MODULES Ignition on, engine not running. With the scan tool, erase HVAC DTCs. Turn the ignition off to the lock position. Reconnect the A/C Heater Control harness connector. NOTE: The Rear A/C Heater Control harness connector should still be disconnected. Ignition on, engine not running. With the scan tool, read HVAC DTCs after 60 seconds. Does the scan tool display this DTC? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Replace the Rear A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
7. 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 «SYSTEM WIRING DIAGRAMS»(ref-313026) 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

Scheme 20

1. When Monitored: With the ignition on.

1. Set Condition: The Evaporator Temperature Sensor voltage input to the A/C Heater Control is below 0.01 volts for a continuous period of 60 seconds. If the A/C Heater Control detects a valid voltage, the Diagnostic Trouble Code (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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

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1. CHECK IF THE DTC IS ACTIVE Ignition on, engine not running. Using the scan tool, read HVAC DTCs after 60 seconds. Is this DTC active? Yes Go to step 2 No Go to step 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 Control 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 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 (C121) Sensor Ground circuit. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 4
4. CHECK THE EVAPORATOR TEMPERATURE SENSOR Replace the Evaporator Temperature Sensor in Accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . Cycle the ignition off for 30 seconds then back on and wait a minimum of 60 seconds. With the scan tool read HVAC DTCs. Does this DTC reset? Yes Replace and program the A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.
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 «SYSTEM WIRING DIAGRAMS»(ref-313026) 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: With the ignition on.

1. Set Condition: The Evaporator Temperature Sensor voltage input to the A/C Heater Control is equal to or above 4.9 volts for a continuous period of 60 seconds. If the A/C Heater Control detects a valid voltage, the Diagnostic trouble Code (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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

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1. CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT VOLTAGE Ignition on, engine not running. Using the scan tool, read HVAC DTCs after 60 seconds. Is this DTC active? Yes Go to step 2 No Go to step 7
2. CHECK THE (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT VOLTAGE 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. Using the scan tool, read the Evaporator Temperature Sensor voltage. Is the voltage below 0.1 of a volt? Yes Replace the Evaporator Temperature Sensor in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 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 Evaporator Temperature Sensor harness connector. Disconnect the A/C Heater Control harness connector. Ignition on, engine not running. Measure the voltage of the (C21) Evaporator Temperature Sensor Signal circuit Is there any voltage present? Yes Repair the (C21) Evaporator Temperature Sensor Signal circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 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 Control 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 or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 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 Control 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 or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 6
6. CHECK THE EVAPORATOR TEMPERATURE SENSOR Replace the Evaporator Temperature Sensor in Accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . Cycle the ignition off for 30 seconds then back on and wait a minimum of 60 seconds. With the Scan tool read HVAC DTCs. Does this DTC reset? Yes Replace and program the A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.
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 «SYSTEM WIRING DIAGRAMS»(ref-313026) 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: With the ignition on.

1. Set Condition: The Infrared Temperature Sensor pulse width modulated (PWM) signal to the A/C Heater Control equals 0.0 volts for a continuous period of 120 seconds. If the A/C Heater Control detects a valid PWM 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

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Scheme 28

Scheme 29

1. CHECK IF DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs after a minimum of 120 seconds. Is this DTC active? Yes Go to step 2 No Go to step 6
2. CHECK THE (F921) FUSED RUN RELAY OUTPUT CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Disconnect the Infrared Sensor harness connector. Ignition on, engine not running. With a test light connected to ground, check the (F921) Fused Run Relay Output 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 Go to step 3 No Repair the (F921) Fused Run Relay Output circuit for an open. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
3. CHECK THE (C83) INFRARED SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the A/C Heater Control harness connector. Measure the resistance between ground and the (C83) Infrared Sensor Signal circuit. Is the resistance below 100k Ohms? Yes Repair the (C83) Infrared Sensor Signal circuit for a short to ground. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 4
4. CHECK THE (C83) INFRARED SENSOR SIGNAL CIRCUIT FOR AN OPEN Measure the resistance of the (C83) Infrared Sensor Signal circuit between the A/C Heater Control harness connector. Is the resistance below 100k Ohms? Yes Repair the (C83) Infrared Sensor Signal circuit for an open. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 5
5. CHECK THE INFRARED SENSOR Replace the Infrared Sensor in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . Did the DTC reset performing the HVAC Verification Test? Yes Replace and program the A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.
6. CHECK THE WIRING AND CONNECTORS The conditions necessary to set the DTC are not present at this time. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit. Using the «SYSTEM WIRING DIAGRAMS»(ref-313026) as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. With the scan tool, check the Environmental Data to help identify the conditions in which the DTC was set. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: With the ignition on.

1. Set Condition: The Infrared Temperature Sensor pulse with modulated (PWM) signal to the A/C Heater Control is greater than 12 volts for a continuous period of 120 seconds or more. If the A/C Heater Control detects a valid PWM 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

Scheme 30

Scheme 31

Scheme 32

1. CHECK IF DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs after a minimum of 120 seconds. Is this DTC active? Yes Go to step 2 No Go to step 6
2. CHECK THE (C83) INFRARED SENSOR SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the A/C Heater Control harness connector. Disconnect the Infrared Sensor harness connector. Ignition on, engine not running. Measure the voltage of the (C83) Infrared Sensor Signal circuit. Is there any voltage present? Yes Repair the (C83) Infrared Sensor Signal circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 3
3. CHECK THE (C121) SENSOR GROUND CIRCUIT FOR A SHORT TO VOLTAGE Measure the voltage of the (C121) Sensor Ground circuit. Is there any voltage present? Yes Repair the (C121) Sensor Ground circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 4
4. CHECK THE (C121) SENSOR GROUND CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Measure the resistance of the (C121) Sensor Ground circuit between the A/C Heater Control harness connector and the Infrared Sensor harness connector. Is the resistance above 5.0 Ohms? Yes Repair the (C121) Sensor Ground circuit for an open. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 5
5. CHECK THE INFRARED SENSOR Replace the Infrared Sensor in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . Did the DTC reset performing the HVAC Verification Test? Yes Replace and program the A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.
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 «SYSTEM WIRING DIAGRAMS»(ref-313026) 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: Continuously with the ignition on.

1. Set Condition: If the Auto mode switch is stuck in an On position for more than four minutes. This DTC has a de-maturing time of two seconds. 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on and an actuator movement is commanded by the A/C Heater Control or during an HVAC Actuator Calibration Test.

1. Set Condition: If an actuator move is commanded by A/C Heater Control and door movement is detected in only one direction in either a clockwise or counterclockwise movement. If the A/C Heater Control detects valid movement 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

Scheme 33

Scheme 34

Scheme 35

Scheme 36

Scheme 37

Scheme 38

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 step 3 No Go to step 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 step 3 No Go to step 11
3. CHECK THE (C153) REAR MODE DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the A/C Heater Control harness connector. Disconnect the Rear Mode Door Actuator harness connector. Ignition on, engine not running. Measure the voltage of the (C153) Rear Mode Door Driver circuit. Is there any voltage present? Yes Repair the (C153) Rear Mode Door Driver circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 4
4. CHECK THE (C34) COMMON DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE Measure the voltage of the (C34) Common Door Driver circuit. Is there any voltage present? Yes Repair the (C34) Common Door Driver circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 5
5. CHECK THE (C153) REAR MODE DOOR DRIVER CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Measure the resistance between ground and the (C153) Rear Mode Door Driver circuit. Is the resistance below 100k Ohms? Yes Repair the (C153) Rear Mode Door Driver circuit for a short to ground. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 6
6. CHECK THE (C34) COMMON DOOR DRIVER CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (C34) Common Door Driver circuit. Is the resistance below 100k Ohms? Yes Repair the (C34) Common Door Driver circuit for a short to ground. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 7
7. CHECK THE (C153) REAR MODE DOOR DRIVER CIRCUIT FOR AN OPEN Measure the resistance of the (C153) Rear Mode Door Driver circuit between the A/C Heater Control harness connector and the Rear Mode Door Actuator harness connector. Is the resistance below 1.0 Ohm? Yes Go to step 8 No Repair the (C153) Rear Mode Door Driver circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
8. CHECK THE (C34) COMMON DOOR DRIVER CIRCUIT FOR AN OPEN Measure the resistance of the (C34) Common Door Driver circuit between the A/C Heater Control harness connector and the Rear Mode Door Actuator harness connector. Is the resistance below 1.0 Ohm? Yes Go to step 9 No Repair the (C34) Common Door Driver circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
9. CHECK THE REAR MODE DOOR Remove the Rear Mode Door Actuator and check the Rear Mode Door for binding and full travel. Were there any problems found? Yes Repair or replace the Rear Mode Door as necessary in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 10
10. CHECK THE REAR MODE DOOR ACTUATOR Replace the Rear Mode Door Actuator in accordance with the Service Information. 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 Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
11. 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 «SYSTEM WIRING DIAGRAMS»(ref-313026) 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: Continuously when a door moment is commanded or when ever an Actuator Calibration Test is performed.

1. Set Condition: The A/C Heater Control 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 Control 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: Continuously when a door moment is commanded or when ever an Actuator Calibration Test is performed.

1. Set Condition: When an Actuator Calibration Test is performed the A/C Heater Control uses a pulse feedback to the controller to detect the total door movement range. This DTC will set 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. If an Actuator Calibration Test is performed and the A/C Heater Control detects a valid pulse feedback in both directions, this 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on and an actuator movement is commanded by the A/C Heater Control or during an HVAC Actuator Calibration Test.

1. Set Condition: If an actuator move is commanded by A/C Heater Control and door movement is detected in only one direction in either a clockwise or counterclockwise movement. If the A/C Heater Control detects valid movement 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

Scheme 39

Scheme 40

Scheme 41

Scheme 42

Scheme 43

Scheme 44

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 step 3 No Go to step 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 step 3 No Go to step 11
3. CHECK THE (C35) MODE DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the A/C Heater Control harness connector. Disconnect the Mode Door Actuator harness connector. Ignition on, engine not running. Measure the voltage of the (C35) Mode Door Driver circuit. Is there any voltage present? Yes Repair the (C35) Mode Door Driver circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 4
4. CHECK THE (C807) COMMON DOOR DRIVER 2 CIRCUIT FOR A SHORT TO VOLTAGE Measure the voltage of the (C807) Common Door Driver 2 circuit. Is there any voltage present? Yes Repair the (C807) Common Door Driver 2 circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 5
5. CHECK THE (C35) MODE DOOR DRIVER CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Measure the resistance between ground and the (C35) Mode Door Driver circuit. Is the resistance below 100k Ohms? Yes Repair the (C35) Mode Door Driver circuit for a short to ground. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 6
6. CHECK THE (C807) COMMON DOOR DRIVER 2 CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (C807) Common Door Driver 2 circuit. Is the resistance below 100k Ohms? Yes Repair the (C807) Common Door Driver 2 circuit for a short to ground. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go To step 7
7. CHECK THE (C35) MODE DOOR DRIVER CIRCUIT FOR AN OPEN Measure the resistance of the (C35) Mode Door Driver circuit between the A/C Heater Control harness connector and the Mode Door Actuator harness connector. Is the resistance below 1.0 Ohm? Yes Go to step 8 No Repair the (C35) Mode Door Driver circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
8. CHECK THE (C807) COMMON DOOR DRIVER 2 CIRCUIT FOR AN OPEN Measure the resistance of the (C807) Common Door Driver 2 circuit between the A/C Heater Control harness connector and the Mode Door Actuator harness connector. Is the resistance below 1.0 Ohm? Yes Go To step 9 No Repair the (C807) Common Door Driver 2 circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
9. CHECK THE MODE DOOR Remove the Mode Door Actuator and check the Mode Door for binding and full travel. Were there any problems found? Yes Repair or replace the Mode Door as necessary in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 10
10. CHECK THE MODE DOOR ACTUATOR Replace the Mode Door Actuator in accordance with the Service Information. 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 Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
11. 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 «SYSTEM WIRING DIAGRAMS»(ref-313026) 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: Continuously when a door moment is commanded or when ever an Actuator Calibration Test is performed.

1. Set Condition: The A/C Heater Control 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 Control 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: Continuously when a door moment is commanded or when ever an Actuator Calibration Test is performed.

1. Set Condition: The A/C Heater Control 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 Control 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on and an actuator movement is commanded by the A/C Heater Control or during an HVAC Actuator Calibration Test.

1. Set Condition: If an actuator move is commanded by A/C Heater Control and door movement is detected in only one direction in either a clockwise or counterclockwise movement. If the A/C Heater Control detects valid movement 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

Scheme 45

Scheme 46

Scheme 47

Scheme 48

Scheme 49

Scheme 50

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 step 3 No Go to step 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 step 3 No Go to step 11
3. CHECK THE (C54) REAR BLEND DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the A/C Heater Control harness connector. Disconnect the Rear Blend Door Actuator harness connector. Ignition on, engine not running. Measure the voltage of the (C54) Rear Blend Door Driver circuit. Is there any voltage present? Yes Repair the (C54) Rear Blend Door Driver circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 4
4. CHECK THE (C34) COMMON DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE Measure the voltage of the (C34) Common Door Driver circuit. Is there any voltage present? Yes Repair the (C34) Common Door Driver circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 5
5. CHECK THE (C54) REAR BLEND DOOR DRIVER CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Measure the resistance between ground and the (C54) Rear Blend Door Driver circuit. Is the resistance below 100k Ohms? Yes Repair the (C54) Rear Blend Door Driver circuit for a short to ground. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 6
6. CHECK THE (C34) COMMON DOOR DRIVER CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (C34) Common Door Driver circuit. Is the resistance below 100k Ohms? Yes Repair the (C34) Common Door Driver circuit for a short to ground. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go To step 7
7. CHECK THE (C54) REAR BLEND DOOR DRIVER CIRCUIT FOR AN OPEN Measure the resistance of the (C54) Rear Blend Door Driver circuit between the A/C Heater Control harness connector and the Rear Blend Door Actuator harness connector. Is the resistance below 1.0 Ohm? Yes Go to step 8 No Repair the (C54) Rear Blend Door Driver circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
8. CHECK THE (C34) COMMON DOOR DRIVER CIRCUIT FOR AN OPEN Measure the resistance of the (C34) Common Door Driver circuit between the A/C Heater Control harness connector and the Rear Blend Door Actuator harness connector. Is the resistance below 1.0 Ohm? Yes Go To step 9 No Repair the (C34) Common Door Driver circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
9. CHECK THE REAR BLEND DOOR Remove the Rear Blend Door Actuator and check the Rear Blend Door for binding and full travel. Were there any problems found? Yes Repair or replace the Rear Blend Door as necessary in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 10
10. CHECK THE REAR BLEND DOOR ACTUATOR Replace the Rear Blend Door Actuator in accordance with the Service Information. 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 Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
11. 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 «SYSTEM WIRING DIAGRAMS»(ref-313026) 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: Continuously when a door moment is commanded or when ever an Actuator Calibration Test is performed.

1. Set Condition: The A/C Heater Control 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 Control 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: Continuously when a door moment is commanded or when ever an Actuator Calibration Test is performed.

1. Set Condition: When an Actuator Calibration Test is performed the Front A/C Heater Module uses a pulse feedback to the controller to detect the total door movement range. This DTC will set 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. If an Actuator Calibration Test is performed and the Front A/C Heater Module detects a valid pulse feedback in both directions, this 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on and an actuator movement is commanded by the A/C Heater Control or during an HVAC Actuator Calibration Test.

1. Set Condition: If an actuator move is commanded by A/C Heater Control and door movement is detected in only one direction in either a clockwise or counterclockwise movement. If the A/C Heater Control detects valid movement 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

Scheme 51

Scheme 52

Scheme 53

Scheme 54

Scheme 55

Scheme 56

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 step 3 No Go to step 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 step 3 No Go to step 11
3. CHECK THE (C32) RECIRCULATION DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the A/C Heater Control harness connector. Disconnect the Recirculation Door Actuator harness connector. Ignition on, engine not running. Measure the voltage of the (C32) Recirculation Door Driver circuit. Is there any voltage present? Yes Repair the (C32) Recirculation Door Driver circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 4
4. CHECK THE (C807) COMMON DOOR DRIVER 2 CIRCUIT FOR A SHORT TO VOLTAGE Measure the voltage of the (C807) Common Door Driver 2 circuit. Is there any voltage present? Yes Repair the (C807) Common Door Driver 2 circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 5
5. CHECK THE (C32) RECIRCULATION DOOR DRIVER CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Measure the resistance between ground and the (C32) Recirculation Door Driver circuit. Is the resistance below 100k Ohms? Yes Repair the (C32) Recirculation Door Driver circuit for a short to ground. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 6
6. CHECK THE (C807) COMMON DOOR DRIVER 2 CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (C807) Common Door Driver 2 circuit. Is the resistance below 100k Ohms? Yes Repair the (C807) Common Door Driver 2 circuit for a short to ground. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go To step 7
7. CHECK THE (C32) RECIRCULATION DOOR DRIVER CIRCUIT FOR AN OPEN Measure the resistance of the (C32) Recirculation Door Driver circuit between the A/C Heater Control harness connector and the Recirculation Door Actuator harness connector. Is the resistance below 1.0 Ohm? Yes Go to step 8 No Repair the (C32) Recirculation Door Driver circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
8. CHECK THE (C807) COMMON DOOR DRIVER 2 CIRCUIT FOR AN OPEN Measure the resistance of the (C807) Common Door Driver 2 circuit between the A/C Heater Control harness connector and the Recirculation Door Actuator harness connector. Is the resistance below 1.0 Ohm? Yes Go To step 9 No Repair the (C807) Common Door Driver 2 circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
9. CHECK THE RECIRCULATION DOOR Remove the Recirculation Door Actuator and check the Recirculation Door for binding and full travel. Were there any problems found? Yes Repair or replace the Recirculation Door as necessary in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 10
10. CHECK THE RECIRCULATION DOOR ACTUATOR Replace the Recirculation Door Actuator in accordance with the Service Information. 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 Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
11. 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 «SYSTEM WIRING DIAGRAMS»(ref-313026) 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: Continuously when a door moment is commanded or when ever an Actuator Calibration Test is performed.

1. Set Condition: The A/C Heater Control 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 Control 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: Continuously when a door moment is commanded or when ever an Actuator Calibration Test is performed.

1. Set Condition: The A/C Heater Control 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 Control 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: Continuously when a door moment is commanded or when ever an Actuator Calibration Test is performed.

1. Set Condition: The A/C Heater Control 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 Control 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: Continuously when a door moment is commanded or when ever an Actuator Calibration Test is performed.

1. Set Condition: The A/C Heater Control 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 Control 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on and an actuator movement is commanded by the A/C Heater Control or during an HVAC Actuator Calibration Test.

1. Set Condition: If an actuator move is commanded by A/C Heater Control and door movement is detected in only one direction in either a clockwise or counterclockwise movement. If the A/C Heater Control detects valid movement 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

Scheme 57

Scheme 58

Scheme 59

Scheme 60

Scheme 61

Scheme 62

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 step 3 No Go to step 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 step 3 No Go to step 11
3. CHECK THE (C61) DRIVER BLEND DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the A/C Heater Control harness connector. Disconnect the Left Blend Door Actuator harness connector. Ignition on, engine not running. Measure the voltage of the (C61) Driver Blend Door Driver circuit. Is there any voltage present? Yes Repair the (C61) Driver Blend Door Driver circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 4
4. CHECK THE (C34) COMMON DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE Measure the voltage of the (C34) Common Door Driver circuit. Is there any voltage present? Yes Repair the (C34) Common Door Driver circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 5
5. CHECK THE (C61) DRIVER BLEND DOOR DRIVER CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Measure the resistance between ground and the (C61) Driver Blend Door Driver circuit. Is the resistance below 100k Ohms? Yes Repair the (C61) Driver Blend Door Driver circuit for a short to ground. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 6
6. CHECK THE (C34) COMMON DOOR DRIVER CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (C34) Common Door Driver circuit. Is the resistance below 100k Ohms? Yes Repair the (C34) Common Door Driver circuit for a short to ground. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 7
7. CHECK THE (C61) DRIVER BLEND DOOR DRIVER CIRCUIT FOR AN OPEN Measure the resistance of the (C61) Driver Blend Door Driver circuit between the A/C Heater Control harness connector and the Left Blend Door Actuator harness connector. Is the resistance below 1.0 Ohm? Yes Go to step 8 No Repair the (C61) Driver Blend Door Driver circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
8. CHECK THE (C34) COMMON DOOR DRIVER CIRCUIT FOR AN OPEN Measure the resistance of the (C34) Common Door Driver circuit between the A/C Heater Control harness connector and the Left Blend Door Actuator harness connector. Is the resistance below 1.0 Ohm? Yes Go to step 9 No Repair the (C34) Common Door Driver circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
9. CHECK THE LEFT BLEND DOOR Remove the Left Blend Door Actuator and check the Left Blend Door for binding and full travel. Were there any problems found? Yes Repair or replace the Left Blend Door as necessary in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 10
10. CHECK THE LEFT BLEND DOOR ACTUATOR Replace the Left Blend Door Actuator in accordance with the Service Information. 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 Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
11. 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 «SYSTEM WIRING DIAGRAMS»(ref-313026) 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: Continuously when a door moment is commanded or when ever an Actuator Calibration Test is performed.

1. Set Condition: When an Actuator Calibration Test is performed the A/C Heater Control uses a pulse feedback to the controller to detect the total door movement range. This DTC will set 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. If an Actuator Calibration Test is performed and the A/C Heater Control detects a valid pulse feedback in both directions, this 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: Continuously when a door moment is commanded or when ever an Actuator Calibration Test is performed.

1. Set Condition: When an Actuator Calibration Test is performed the A/C Heater Control uses a pulse feedback to the controller to detect the total door movement range. This DTC will set 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. If an Actuator Calibration Test is performed and the A/C Heater Control detects a valid pulse feedback in both directions, this 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on and an actuator movement is commanded by the A/C Heater Control or during an HVAC Actuator Calibration Test.

1. Set Condition: If an actuator move is commanded by A/C Heater Control and door movement is detected in only one direction in either a clockwise or counterclockwise movement. If the A/C Heater Control detects valid movement 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

Scheme 63

Scheme 64

Scheme 65

Scheme 66

Scheme 67

Scheme 68

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 step 3 No Go to step 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 step 3 No Go to step 11
3. CHECK THE (C33) PASSENGER BLEND DOOR DRIVER CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the A/C Heater Control harness connector. Disconnect the Right Blend Door Actuator harness connector. Ignition on, engine not running. Measure the voltage of the (C33) Passenger Blend Door Driver circuit. Is there any voltage present? Yes Repair the (C33) Passenger Blend Door Driver circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 4
4. CHECK THE (C807) COMMON DOOR DRIVER 2 CIRCUIT FOR A SHORT TO VOLTAGE Measure the voltage of the (C807) Common Door Driver 2 circuit. Is there any voltage present? Yes Repair the (C807) Common Door Driver 2 circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 5
5. CHECK THE (C33) PASSENGER BLEND DOOR DRIVER CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Measure the resistance between ground and the (C33) Passenger Blend Door Driver circuit. Is the resistance below 100k Ohms? Yes Repair the (C33) Passenger Blend Door Driver circuit for a short to ground. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 6
6. CHECK THE (C807) COMMON DOOR DRIVER 2 CIRCUIT FOR A SHORT TO GROUND Measure the resistance between ground and the (C807) Common Door Driver 2 circuit. Is the resistance below 100k Ohms? Yes Repair the (C807) Common Door Driver 2 circuit for a short to ground. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 7
7. CHECK THE (C33) PASSENGER BLEND DOOR DRIVER CIRCUIT FOR AN OPEN Measure the resistance of the (C33) Passenger Blend Door Driver circuit between the A/C Heater Control harness connector and the Right Blend Door Actuator harness connector. Is the resistance below 1.0 Ohm? Yes Go to step 8 No Repair the (C33) Passenger Blend Door Driver circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
8. CHECK THE (C807) COMMON DOOR DRIVER 2 CIRCUIT FOR AN OPEN Measure the resistance of the (C807) Common Door Driver 2 circuit between the A/C Heater Control harness connector and the Right Blend Door Actuator harness connector. Is the resistance below 1.0 Ohm? Yes Go to step 9 No Repair the (C807) Common Door Driver 2 circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
9. CHECK THE RIGHT BLEND DOOR Remove the Right Blend Door Actuator and check the Right Blend Door for binding and full travel. Were there any problems found? Yes Repair or replace the Right Blend Door as necessary in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 10
10. CHECK THE RIGHT BLEND DOOR ACTUATOR Replace the Right Blend Door Actuator in accordance with the Service Information. 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 Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
11. 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 «SYSTEM WIRING DIAGRAMS»(ref-313026) 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: With ever an A/C Cool Down Test is performed.

1. Set Condition: This DTC is set whenever the A/C Cool Down 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 Cool Down Test.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on.

1. Set Condition: If the A/C Heater Control detects a voltage less than 0.21 volts for 60 seconds on the Rear Mode Signal circuit. If a valid voltage is detected for 2 seconds the DTC will change from active to stored and stay in the controllers memory for 100 consecutive ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/HVAC - Standard Procedure .

Scheme 69

Scheme 70

Scheme 71

1. VERIFY THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, erase HVAC DTCs. Turn the ignition off, wait 10 seconds, and turn the ignition on. NOTE: Make sure the Rear Control Lockout on the A/C Heater Control is not turned on. After waiting a minimum of 60 seconds, read HVAC DTCs. Does the scan tool display this DTC as active? Yes Go To 2 No Go to step 9
2. CHECK FOR OTHER REAR REQUEST CIRCUIT LOW DTCS With the scan tool, read HVAC DTCs. Does the scan tool also display the DTCs B1028-Rear Blower Control Request Input Circuit Low and B102E-Rear Blend Request Low as active? Yes Go to step 3 No Go to step 6
3. CHECK THE REAR A/C HEATER CONTROL CONNECTOR Check if the Rear A/C Heater Control harness connector is unplugged or not fully seated. Check the Rear A/C Heater Control and harness connector for pushed out, damaged, corroded pins or terminals. Were there any problems found? Yes Repair as necessary. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 4
4. CHECK THE (C800) 5 VOLT SUPPLY CIRCUIT FOR SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the A/C Heater Control harness connector. Disconnect the Rear A/C Heater Control harness connector. Measure the resistance between ground and the (C800) 5 Volt Supply circuit. Is the resistance below 100k Ohms? Yes Repair the (C800) 5 Volt Supply circuit for a short to ground. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 5
5. CHECK THE (C800) 5 VOLT SUPPLY CIRCUIT FOR AN OPEN Measure the resistance of the (C800) 5 Volt Supply circuit between the A/C Heater Control harness connector and the Rear A/C Heater Control harness connector. Is the resistance below 1.0 Ohm? Yes Go to step 8 No Repair the (C800) 5 Volt Supply circuit for an open. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
6. CHECK THE (C53) REAR MODE SIGNAL CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the A/C Heater Control harness connector. Disconnect the Rear A/C Heater Control harness connector. Measure the resistance between ground and the (C53) Rear Mode Signal circuit. Is the resistance below 100k Ohms? Yes Repair the (C53) Rear Mode Signal circuit for a short to ground. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 7
7. CHECK THE (C53) REAR MODE SIGNAL CIRCUIT FOR AN OPEN Measure the resistance of the (C53) Rear Mode Signal circuit between A/C Heater Control harness connector and the Rear A/C Heater Control harness connector. Is the resistance below 1.0 Ohm? Yes Go to step 8 No Repair the (C53) Rear Mode Signal circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
8. CHECK THE HVAC CONTROL MODULES Ignition on, engine not running. With the scan tool, erase HVAC DTCs. Turn the ignition off to the lock position. Reconnect the A/C Heater Control harness connector. Connect a jumper wire between the (C800) 5-volt Supply circuit and the (C53) Rear Mode Signal circuit in the Rear A/C Heater Control harness connector. Ignition on, engine not running. After waiting a minimum of 60 seconds, with the scan tool, read HVAC DTCs. Does the scan tool display this DTC as active? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Replace the Rear A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
9. 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: With the ignition on.

1. Set Condition: If the A/C Heater Control detects the voltage is greater than 4.21 volts for 60 seconds on the Rear Mode Signal circuit. If a valid voltage is detected for 2 seconds the DTC will change from active to stored and stay in the controllers memory for 100 consecutive ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/HVAC - Standard Procedure .

Scheme 72

1. VERIFY THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, erase HVAC DTCs. Turn the ignition off, wait 10 seconds, and turn the ignition on. NOTE: Make sure the Rear Control Lockout on the A/C Heater Control is not turned on. With the scan tool, read HVAC DTCs after 60 seconds. Does the scan tool display this DTC as active? Yes Go To 2 No Go to step 7
2. CHECK FOR OTHER REAR REQUEST CIRCUIT HIGH DTCS With the scan tool, read HVAC DTCs. Are the DTCs B1029-Rear Blower Control Request Input Circuit High and B102F-Rear Blend Request Circuit High also present and Active? Yes Go to step 3 No Go To 5
3. CHECK THE (C955) SIGNAL GROUND CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the A/C Heater Control harness connector. Disconnect the Rear A/C Heater Control harness connector. Ignition on, engine not running. Measure the voltage of the (C955) Signal Ground circuit. Is there any voltage present? Yes Repair the (C955) Signal Ground circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 4
4. CHECK THE (C955) SIGNAL GROUND CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Measure the resistance of the (C955) Signal Ground circuit between the A/C Heater Control harness connector and the Rear A/C Heater Control harness connector. Is the resistance below 1.0 Ohm? Yes Go to step 6 No Repair the (C955) Signal Ground circuit for an open. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
5. CHECK THE (C53) REAR MODE SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the A/C Heater Module harness connector. Disconnect the Rear A/C Heater Control harness connector. Ignition on, engine not running. Measure the voltage of the (C53) Rear Mode Signal circuit. Is there any voltage present? Yes Repair the (C53) Rear Mode Signal circuit for a short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 6
6. CHECK THE HVAC CONTROL MODULES Ignition on, engine not running. With the scan tool, erase HVAC DTCs. Turn the ignition off to the lock position. Reconnect the A/C Heater Control harness connector. NOTE: The Rear A/C Heater Control harness connector should still be disconnected. Ignition on, engine not running. With the scan tool, read HVAC DTCs after 60 seconds. Does the scan tool display this DTC? Yes Replace the A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Replace the Rear A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
7. 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 «SYSTEM WIRING DIAGRAMS»(ref-313026) 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: With the ignition on.

1. Set Condition: If the Rear Power On/Off Control Switch is stuck in an On position for more than four minutes. This DTC has a de-maturing time of one second. 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on.

1. Set Condition: If the Rear Power Lockout Switch is stuck in an On position for more than four minutes. This DTC has a de-maturing time of one second. 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on.

1. Set Condition: If the Sync Switch is stuck in an On position for more than four minutes. This DTC has a de-maturing time of one second. 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on.

1. Set Condition: If the Up Mode Switch is stuck in an On position for more than four minutes. This DTC has a de-maturing time of one second. 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on.

1. Set Condition: If the Down Mode Switch is stuck in an On position for more than four minutes. This DTC has a de-maturing time of one second. 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on.

1. Set Condition: If the Rear Up Mode Switch is stuck in an On position for more than four minutes. This DTC has a de-maturing time of one second. 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on.

1. Set Condition: If the Rear Down Mode Switch is stuck in an On position for more than four minutes. This DTC has a de-maturing time of one second. 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on.

1. Set Condition: If the Rear Blower Up Switch is stuck in an On position for more than four minutes. This DTC has a de-maturing time of one second. 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on.

1. Set Condition: If the Rear Blower Down Switch is stuck in an On position for more than four minutes. This DTC has a de-maturing time of one second. 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on.

1. Set Condition: If the Left Sun Sensor Signal input voltage is less than 2.0 volts for period of 60 seconds.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/HVAC - Standard Procedure .

Scheme 73

1. CHECK IF THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs. NOTE: It can take up to 60 seconds or more for this DTC to mature. Is this DTC active? Yes Go to step 2 No Go to step 4
2. CHECK (G39) SUN SENSOR SIGNAL 1 CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the A/C Heater Control harness connector. Disconnect the Sun Sensor harness connector. Measure the resistance between ground and the (G39) Sun Sensor Signal 1 circuit. Is the resistance below 100k Ohms? Yes Repair the (G39) Sun Sensor Signal 1 circuit for a short to ground. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 3
3. CHECK THE SUN SENSOR AND A/C HEATER CONTROL Replace the Sun Sensor in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . Did this DTC reset while performing the HVAC Verification Test? Yes Replace and program the A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . 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 «SYSTEM WIRING DIAGRAMS»(ref-313026) 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: Continuously with the ignition on.

1. Set Condition: If the Left Sun Sensor Signal 1 input voltage is greater than 4.5 volts for period of 60 seconds. This DTC has a de-maturing time of 10 seconds. 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

Scheme 74

Scheme 75

Scheme 76

Scheme 77

1. CHECK IF DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs. NOTE: It can take up to 60 seconds or more for this DTC to mature. Is this DTC active? Yes Go to step 2 No Go to step 6
2. CHECK THE SUN SENSOR Turn the ignition off to the lock position. Disconnect the Sun Sensor harness connector. Connect a jumper wire between the (G39) Sun Sensor Signal 1 circuit and the (C121) Sensor Ground circuit in the Sun Sensor harness connector. Ignition on, engine not running. With the scan tool, read HVAC DTCs. Did the DTC B1601-Left Solar Sensor Circuit Low set or is the Sun Sensor voltage below 0.5 of a volt? Yes Replace the Sun Sensor in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 3
3. CHECK THE (G39) SUN SENSOR SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the jumper wire in the Sun Sensor harness connector. Disconnect the A/C Heater Control harness connector. NOTE: Check connectors - Clean/repair as necessary. Ignition on, engine not running. Check the voltage of the (G39) Sun Sensor Signal 1 circuit. Is there any voltage present? Yes Repair the (G39) Sun Sensor Signal 1 circuit for an short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 4
4. CHECK THE (G39) SUN SENSOR SIGNAL 1 CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Measure the resistance of the (G39) Sun Sensor Signal 1 circuit between the A/C Heater Control harness connector and the Sun Sensor harness connector. Is the resistance above 1.0 Ohm? Yes Repair the (G39) Sun Sensor Signal 1 circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 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 Control harness connector and the Sun Sensor harness connector. Is the resistance above 1.0 Ohm? Yes Repair the (C121) Sensor Ground circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Replace and program the A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
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 «SYSTEM WIRING DIAGRAMS»(ref-313026) 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: With the ignition on.

1. Set Condition: If the Left Sun Sensor Signal input voltage is less than 2.0 volts for period of 60 seconds.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/HVAC - Standard Procedure .

Scheme 78

1. CHECK IF THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs. NOTE: It can take up to 60 seconds or more for this DTC to mature. Is this DTC active? Yes Go to step 2 No Go to step 4
2. CHECK (G139) SUN SENSOR SIGNAL 2 CIRCUIT FOR A SHORT TO GROUND Turn the ignition off to the lock position. Disconnect the A/C Heater Control harness connector. Disconnect the Sun Sensor harness connector. Measure the resistance between ground and the (G139) Sun Sensor Signal 2 circuit. Is the resistance below 100k Ohms? Yes Repair the (G139) Sun Sensor Signal 2 circuit for a short to ground. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 3
3. CHECK THE SUN SENSOR AND A/C HEATER CONTROL Replace the Sun Sensor in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . Did this DTC reset while performing the HVAC Verification Test? Yes Replace and program the A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . 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 «SYSTEM WIRING DIAGRAMS»(ref-313026) 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: Continuously with the ignition on.

1. Set Condition: If the Left Sun Sensor Signal 2 input voltage is greater than 4.5 volts for period of 60 seconds. This DTC has a de-maturing time of 10 seconds. 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. See DTC-Based Diagnostics/HVAC - Standard Procedure .

Scheme 79

Scheme 80

Scheme 81

1. CHECK IF DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs. NOTE: It can take up to 60 seconds or more for this DTC to mature. Is this DTC active? Yes Go to step 2 No Go to step 6
2. CHECK THE SUN SENSOR Turn the ignition off to the lock position. Disconnect the Sun Sensor harness connector. Connect a jumper wire between the (G139) Sun Sensor Signal 2 circuit and the (C121) Sensor Ground circuit in the Sun Sensor harness connector. Ignition on, engine not running. With the scan tool, read HVAC DTCs. Did the DTC B1604-Right Solar Sensor Circuit Low set or is the Sun Sensor voltage below 0.5 of a volt? Yes Replace the Sun Sensor in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 3
3. CHECK THE (G139) SUN SENSOR SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the jumper wire in the Sun Sensor harness connector. Disconnect the A/C Heater Control harness connector. NOTE: Check connectors - Clean/repair as necessary. Ignition on, engine not running. Check the voltage of the (G139) Sun Sensor Signal 2 circuit. Is there any voltage present? Yes Repair the (G139) Sun Sensor Signal 2 circuit for an short to voltage. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 4
4. CHECK THE (G139) SUN SENSOR SIGNAL 2 CIRCUIT FOR AN OPEN Turn the ignition off to the lock position. Measure the resistance of the (G139) Sun Sensor Signal 2 circuit between the A/C Heater Control harness connector and the Sun Sensor harness connector. Is the resistance above 1.0 Ohm? Yes Repair the (G139) Sun Sensor Signal 2 circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 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 Control harness connector and the Sun Sensor harness connector. Is the resistance above 1.0 Ohm? Yes Repair the (C121) Sensor Ground circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Replace and program the A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
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 «SYSTEM WIRING DIAGRAMS»(ref-313026) 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: With the ignition on.

1. Set Condition: If the Twilight or Ambient Light Sensor input voltage is less than 0.2 of a volt for period of 60 seconds.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/HVAC - Standard Procedure .

Scheme 82

1. CHECK IF THE DTC IS ACTIVE Ignition on, engine not running. NOTE: It can take up to 60 seconds or more for this DTC to mature. With the scan tool, read HVAC DTCs. Is this DTC active? Yes Go to step 2 No Go to step 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 Control harness connector. Disconnect the Sun Sensor harness connector. Measure the resistance between ground and he (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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 3
3. CHECK THE A/C HEATER CONTROL Replace the Sun Sensor in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . Did this DTC reset while performing the HVAC Verification Test? Yes Replace and program the A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . 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 «SYSTEM WIRING DIAGRAMS»(ref-313026) 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: With the ignition on.

1. Set Condition: If the Twilight or Ambient Light Sensor input voltage is greater than 4.66 volts for period of 60 seconds.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/HVAC - Standard Procedure .

Scheme 83

Scheme 84

1. CHECK IF THE DTC IS ACTIVE Ignition on, engine not running. With the scan tool, read HVAC DTCs. NOTE: It can take up to 60 seconds or more for this DTC to mature. Is this DTC active? Yes Go to step 2 No Go to step 6
2. CHECK (L24) AUTO HEADLAMPS SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off to the lock position. Disconnect the A/C Heater Control 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Go to step 3
3. CHECK (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 Control harness connector and the Sun Sensor harness connector. Is the resistance below 1.0 Ohm? Yes Go to step 4 No Repair the (L24) Auto Headlamps Signal circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
4. CHECK (C121) SENSOR GROUND CIRCUIT FOR AN OPEN Measure the resistance of the (C121) Sensor Ground circuit between the A/C Heater Control harness connector and the Sun Sensor harness connector. Is the resistance below 1.0 Ohm? Yes Go to step 5 No Repair the (C121) Sensor Ground circuit for an open or high resistance. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) .
5. CHECK THE SUN SENSOR AND A/C HEATER CONTROL Replace the Sun Sensor in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . Did this DTC reset while performing the HVAC Verification Test? Yes Replace and program the A/C Heater Control in accordance with the Service Information. Perform the HVAC VERIFICATION TEST. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.
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 «SYSTEM WIRING DIAGRAMS»(ref-313026) 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. See «DTC-Based Diagnostics/HVAC - Standard Procedure»(ref-353631-S26939983102010011200000) . No Test complete.

1. When Monitored: With the ignition on.

1. Set Condition: If the A/C Heater Control has an internal fault. This Diagnostic Trouble Code (DTC) has a maturing time of five seconds and a de-maturing time of 10 seconds. If the DTCs status changes from active to stored it will stay in memory for 100 ignition cycles.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: With the ignition on.

1. Set Condition: If the stored configuration does not match the configuration stored in the controller.

Always perform the HVAC Pre-Diagnostic Troubleshooting procedure before proceeding. See DTC-Based Diagnostics/HVAC - Standard Procedure .

1. When Monitored: Continuously when the ignition is on. Battery voltage between 10 and 16 Volts. Ignition Off Draw (IOD) fuse installed. Totally Integrated Power Module (TIPM) is configured correctly.

1. Set Condition: The A/C Heater Control detects a short to ground or a short to voltage on the CAN Bus circuits.

1. When Monitored: Continuously when the ignition is on. 12-volt battery voltage between 10 and 16 Volts. Ignition Off Draw (IOD) fuse installed. Totally Integrated Power Module (TIPM) is configured correctly.

1. Set Condition: Bus messages not received from the Totally Integrated Power Module (TIPM) for three seconds.

1. When Monitored: With the ignition on. Battery voltage between 10 and 16 Volts. Ignition Off Draw (IOD) fuse installed. Totally Integrated Power Module (TIPM) is configured correctly.

1. Set Condition: Bus messages not received from the Cluster/CCN for approximately two to five seconds.